diff options
Diffstat (limited to 'src/sat')
61 files changed, 8750 insertions, 11293 deletions
diff --git a/src/sat/bsat/satChecker.c b/src/sat/bsat/satChecker.c index 041bc9ed..7aec4a4d 100644 --- a/src/sat/bsat/satChecker.c +++ b/src/sat/bsat/satChecker.c @@ -23,7 +23,7 @@ #include <string.h> #include <assert.h> #include <time.h> -#include "vec.h" +#include "misc/vec/vec.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/bsat/satInterA.c b/src/sat/bsat/satInterA.c index a635516c..01a5ca31 100644 --- a/src/sat/bsat/satInterA.c +++ b/src/sat/bsat/satInterA.c @@ -24,7 +24,7 @@ #include <assert.h> #include <time.h> #include "satStore.h" -#include "aig.h" +#include "src/aig/aig/aig.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/bsat/satInterB.c b/src/sat/bsat/satInterB.c index 1ffb0dc5..5d348f62 100644 --- a/src/sat/bsat/satInterB.c +++ b/src/sat/bsat/satInterB.c @@ -24,7 +24,7 @@ #include <assert.h> #include <time.h> #include "satStore.h" -#include "aig.h" +#include "src/aig/aig/aig.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/bsat/satInterP.c b/src/sat/bsat/satInterP.c index ff0b0e94..b8ab473a 100644 --- a/src/sat/bsat/satInterP.c +++ b/src/sat/bsat/satInterP.c @@ -25,7 +25,7 @@ #include <time.h> #include "satStore.h" -#include "vec.h" +#include "src/misc/vec/vec.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/bsat/satMem.h b/src/sat/bsat/satMem.h index 8ea153a6..9dc9e692 100644 --- a/src/sat/bsat/satMem.h +++ b/src/sat/bsat/satMem.h @@ -18,14 +18,14 @@ ***********************************************************************/ -#ifndef __SAT_MEM_H__ -#define __SAT_MEM_H__ +#ifndef ABC__sat__bsat__satMem_h +#define ABC__sat__bsat__satMem_h //////////////////////////////////////////////////////////////////////// /// INCLUDES /// //////////////////////////////////////////////////////////////////////// -#include "abc_global.h" +#include "src/misc/util/abc_global.h" ABC_NAMESPACE_HEADER_START diff --git a/src/sat/bsat/satProof.c b/src/sat/bsat/satProof.c index 79179952..111b3ece 100644 --- a/src/sat/bsat/satProof.c +++ b/src/sat/bsat/satProof.c @@ -19,8 +19,8 @@ ***********************************************************************/ #include "satSolver2.h" -#include "vec.h" -#include "aig.h" +#include "src/misc/vec/vec.h" +#include "src/aig/aig/aig.h" #include "satTruth.h" #include "vecRec.h" @@ -610,7 +610,7 @@ void * Sat_ProofInterpolant( sat_solver2 * s, void * pGloVars ) // start the AIG pAig = Aig_ManStart( 10000 ); - pAig->pName = Aig_UtilStrsav( "interpol" ); + pAig->pName = Abc_UtilStrsav( "interpol" ); for ( i = 0; i < Vec_IntSize(vGlobVars); i++ ) Aig_ObjCreatePi( pAig ); diff --git a/src/sat/bsat/satSolver.h b/src/sat/bsat/satSolver.h index 0ca934ed..30b3742b 100644 --- a/src/sat/bsat/satSolver.h +++ b/src/sat/bsat/satSolver.h @@ -19,8 +19,8 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA **************************************************************************************************/ // Modified to compile with MS Visual Studio 6.0 by Alan Mishchenko -#ifndef satSolver_h -#define satSolver_h +#ifndef ABC__sat__bsat__satSolver_h +#define ABC__sat__bsat__satSolver_h #include <stdio.h> diff --git a/src/sat/bsat/satSolver2.h b/src/sat/bsat/satSolver2.h index baccf68d..29279b86 100644 --- a/src/sat/bsat/satSolver2.h +++ b/src/sat/bsat/satSolver2.h @@ -19,8 +19,8 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA **************************************************************************************************/ // Modified to compile with MS Visual Studio 6.0 by Alan Mishchenko -#ifndef satSolver2_h -#define satSolver2_h +#ifndef ABC__sat__bsat__satSolver2_h +#define ABC__sat__bsat__satSolver2_h #include <stdio.h> diff --git a/src/sat/bsat/satSolver_old.h b/src/sat/bsat/satSolver_old.h index 4c577b1e..d2228f79 100644 --- a/src/sat/bsat/satSolver_old.h +++ b/src/sat/bsat/satSolver_old.h @@ -19,8 +19,8 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA **************************************************************************************************/ // Modified to compile with MS Visual Studio 6.0 by Alan Mishchenko -#ifndef satSolver_h -#define satSolver_h +#ifndef ABC__sat__bsat__satSolver_old_h +#define ABC__sat__bsat__satSolver_old_h #include <stdio.h> diff --git a/src/sat/bsat/satStore.h b/src/sat/bsat/satStore.h index 0293aea7..206c6939 100644 --- a/src/sat/bsat/satStore.h +++ b/src/sat/bsat/satStore.h @@ -18,8 +18,8 @@ ***********************************************************************/ -#ifndef __SAT_STORE_H__ -#define __SAT_STORE_H__ +#ifndef ABC__sat__bsat__satStore_h +#define ABC__sat__bsat__satStore_h /* diff --git a/src/sat/bsat/satTruth.h b/src/sat/bsat/satTruth.h index e07518b0..2f17b6f0 100644 --- a/src/sat/bsat/satTruth.h +++ b/src/sat/bsat/satTruth.h @@ -18,8 +18,8 @@ ***********************************************************************/ -#ifndef __SAT_TRUTH_H__ -#define __SAT_TRUTH_H__ +#ifndef ABC__sat__bsat__satTruth_h +#define ABC__sat__bsat__satTruth_h //////////////////////////////////////////////////////////////////////// /// INCLUDES /// @@ -29,7 +29,7 @@ #include <stdlib.h> #include <string.h> #include <assert.h> -#include "abc_global.h" +#include "src/misc/util/abc_global.h" ABC_NAMESPACE_HEADER_START diff --git a/src/sat/bsat/satVec.h b/src/sat/bsat/satVec.h index bf117521..01740580 100644 --- a/src/sat/bsat/satVec.h +++ b/src/sat/bsat/satVec.h @@ -19,10 +19,10 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA **************************************************************************************************/ // Modified to compile with MS Visual Studio 6.0 by Alan Mishchenko -#ifndef satVec_h -#define satVec_h +#ifndef ABC__sat__bsat__satVec_h +#define ABC__sat__bsat__satVec_h -#include "abc_global.h" +#include "src/misc/util/abc_global.h" ABC_NAMESPACE_HEADER_START diff --git a/src/sat/bsat/vecRec.h b/src/sat/bsat/vecRec.h index e92129be..82d7183d 100644 --- a/src/sat/bsat/vecRec.h +++ b/src/sat/bsat/vecRec.h @@ -18,8 +18,8 @@ ***********************************************************************/ -#ifndef __VEC_REC_H__ -#define __VEC_REC_H__ +#ifndef ABC__sat__bsat__vecRec_h +#define ABC__sat__bsat__vecRec_h //////////////////////////////////////////////////////////////////////// diff --git a/src/sat/cnf/cnf.h b/src/sat/cnf/cnf.h new file mode 100644 index 00000000..0b6fc8c2 --- /dev/null +++ b/src/sat/cnf/cnf.h @@ -0,0 +1,195 @@ +/**CFile**************************************************************** + + FileName [cnf.h] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [DAG-aware AIG rewriting.] + + Synopsis [External declarations.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnf.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#ifndef ABC__aig__cnf__cnf_h +#define ABC__aig__cnf__cnf_h + + +//////////////////////////////////////////////////////////////////////// +/// INCLUDES /// +//////////////////////////////////////////////////////////////////////// + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <time.h> + +#include "src/misc/vec/vec.h" +#include "src/aig/aig/aig.h" +#include "src/opt/dar/darInt.h" + +//////////////////////////////////////////////////////////////////////// +/// PARAMETERS /// +//////////////////////////////////////////////////////////////////////// + + + +ABC_NAMESPACE_HEADER_START + + +//////////////////////////////////////////////////////////////////////// +/// BASIC TYPES /// +//////////////////////////////////////////////////////////////////////// + +typedef struct Cnf_Man_t_ Cnf_Man_t; +typedef struct Cnf_Dat_t_ Cnf_Dat_t; +typedef struct Cnf_Cut_t_ Cnf_Cut_t; + +// the CNF asserting outputs of AIG to be 1 +struct Cnf_Dat_t_ +{ + Aig_Man_t * pMan; // the AIG manager, for which CNF is computed + int nVars; // the number of variables + int nLiterals; // the number of CNF literals + int nClauses; // the number of CNF clauses + int ** pClauses; // the CNF clauses + int * pVarNums; // the number of CNF variable for each node ID (-1 if unused) + int * pObj2Clause; // the mapping of objects into clauses + int * pObj2Count; // the mapping of objects into clause number +}; + +// the cut used to represent node in the AIG +struct Cnf_Cut_t_ +{ + char nFanins; // the number of leaves + char Cost; // the cost of this cut + short nWords; // the number of words in truth table + Vec_Int_t * vIsop[2]; // neg/pos ISOPs + int pFanins[0]; // the fanins (followed by the truth table) +}; + +// the CNF computation manager +struct Cnf_Man_t_ +{ + Aig_Man_t * pManAig; // the underlying AIG manager + char * pSopSizes; // sizes of SOPs for 4-variable functions + char ** pSops; // the SOPs for 4-variable functions + int aArea; // the area of the mapping + Aig_MmFlex_t * pMemCuts; // memory manager for cuts + int nMergeLimit; // the limit on the size of merged cut + unsigned * pTruths[4]; // temporary truth tables + Vec_Int_t * vMemory; // memory for intermediate ISOP representation + int timeCuts; + int timeMap; + int timeSave; +}; + + +static inline Dar_Cut_t * Dar_ObjBestCut( Aig_Obj_t * pObj ) { Dar_Cut_t * pCut; int i; Dar_ObjForEachCut( pObj, pCut, i ) if ( pCut->fBest ) return pCut; return NULL; } + +static inline int Cnf_CutSopCost( Cnf_Man_t * p, Dar_Cut_t * pCut ) { return p->pSopSizes[pCut->uTruth] + p->pSopSizes[0xFFFF & ~pCut->uTruth]; } + +static inline int Cnf_CutLeaveNum( Cnf_Cut_t * pCut ) { return pCut->nFanins; } +static inline int * Cnf_CutLeaves( Cnf_Cut_t * pCut ) { return pCut->pFanins; } +static inline unsigned * Cnf_CutTruth( Cnf_Cut_t * pCut ) { return (unsigned *)(pCut->pFanins + pCut->nFanins); } + +static inline Cnf_Cut_t * Cnf_ObjBestCut( Aig_Obj_t * pObj ) { return (Cnf_Cut_t *)pObj->pData; } +static inline void Cnf_ObjSetBestCut( Aig_Obj_t * pObj, Cnf_Cut_t * pCut ) { pObj->pData = pCut; } + +//////////////////////////////////////////////////////////////////////// +/// MACRO DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// ITERATORS /// +//////////////////////////////////////////////////////////////////////// + +// iterator over the clauses +#define Cnf_CnfForClause( p, pBeg, pEnd, i ) \ + for ( i = 0; i < p->nClauses && (pBeg = p->pClauses[i]) && (pEnd = p->pClauses[i+1]); i++ ) + +// iterator over leaves of the cut +#define Cnf_CutForEachLeaf( p, pCut, pLeaf, i ) \ + for ( i = 0; (i < (int)(pCut)->nFanins) && ((pLeaf) = Aig_ManObj(p, (pCut)->pFanins[i])); i++ ) + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +/*=== cnfCore.c ========================================================*/ +extern Vec_Int_t * Cnf_DeriveMappingArray( Aig_Man_t * pAig ); +extern Cnf_Dat_t * Cnf_Derive( Aig_Man_t * pAig, int nOutputs ); +extern Cnf_Dat_t * Cnf_DeriveOther( Aig_Man_t * pAig ); +extern Cnf_Man_t * Cnf_ManRead(); +extern void Cnf_ClearMemory(); +/*=== cnfCut.c ========================================================*/ +extern Cnf_Cut_t * Cnf_CutCreate( Cnf_Man_t * p, Aig_Obj_t * pObj ); +extern void Cnf_CutPrint( Cnf_Cut_t * pCut ); +extern void Cnf_CutFree( Cnf_Cut_t * pCut ); +extern void Cnf_CutUpdateRefs( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, Cnf_Cut_t * pCutRes ); +extern Cnf_Cut_t * Cnf_CutCompose( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int iFan ); +/*=== cnfData.c ========================================================*/ +extern void Cnf_ReadMsops( char ** ppSopSizes, char *** ppSops ); +/*=== cnfFast.c ========================================================*/ +extern void Cnf_CollectLeaves( Aig_Obj_t * pRoot, Vec_Ptr_t * vSuper, int fStopCompl ); +extern void Cnf_ComputeClauses( Aig_Man_t * p, Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves, + Vec_Ptr_t * vNodes, Vec_Int_t * vMap, Vec_Int_t * vCover, Vec_Int_t * vClauses ); +extern void Cnf_DeriveFastMark( Aig_Man_t * p ); +extern Cnf_Dat_t * Cnf_DeriveFast( Aig_Man_t * p, int nOutputs ); +/*=== cnfMan.c ========================================================*/ +extern Cnf_Man_t * Cnf_ManStart(); +extern void Cnf_ManStop( Cnf_Man_t * p ); +extern Vec_Int_t * Cnf_DataCollectPiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p ); +extern Cnf_Dat_t * Cnf_DataAlloc( Aig_Man_t * pAig, int nVars, int nClauses, int nLiterals ); +extern Cnf_Dat_t * Cnf_DataDup( Cnf_Dat_t * p ); +extern void Cnf_DataFree( Cnf_Dat_t * p ); +extern void Cnf_DataLift( Cnf_Dat_t * p, int nVarsPlus ); +extern void Cnf_DataFlipLastLiteral( Cnf_Dat_t * p ); +extern void Cnf_DataPrint( Cnf_Dat_t * p, int fReadable ); +extern void Cnf_DataWriteIntoFile( Cnf_Dat_t * p, char * pFileName, int fReadable ); +extern void * Cnf_DataWriteIntoSolver( Cnf_Dat_t * p, int nFrames, int fInit ); +extern void * Cnf_DataWriteIntoSolverInt( void * pSat, Cnf_Dat_t * p, int nFrames, int fInit ); +extern int Cnf_DataWriteOrClause( void * pSat, Cnf_Dat_t * pCnf ); +extern int Cnf_DataWriteAndClauses( void * p, Cnf_Dat_t * pCnf ); +extern void Cnf_DataTranformPolarity( Cnf_Dat_t * pCnf, int fTransformPos ); +extern int Cnf_DataAddXorClause( void * pSat, int iVarA, int iVarB, int iVarC ); +/*=== cnfMap.c ========================================================*/ +extern void Cnf_DeriveMapping( Cnf_Man_t * p ); +extern int Cnf_ManMapForCnf( Cnf_Man_t * p ); +/*=== cnfPost.c ========================================================*/ +extern void Cnf_ManTransferCuts( Cnf_Man_t * p ); +extern void Cnf_ManFreeCuts( Cnf_Man_t * p ); +extern void Cnf_ManPostprocess( Cnf_Man_t * p ); +/*=== cnfUtil.c ========================================================*/ +extern Vec_Ptr_t * Aig_ManScanMapping( Cnf_Man_t * p, int fCollect ); +extern Vec_Ptr_t * Cnf_ManScanMapping( Cnf_Man_t * p, int fCollect, int fPreorder ); +extern Vec_Int_t * Cnf_DataCollectCiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p ); +extern Vec_Int_t * Cnf_DataCollectCoSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p ); +/*=== cnfWrite.c ========================================================*/ +extern Vec_Int_t * Cnf_ManWriteCnfMapping( Cnf_Man_t * p, Vec_Ptr_t * vMapped ); +extern void Cnf_SopConvertToVector( char * pSop, int nCubes, Vec_Int_t * vCover ); +extern Cnf_Dat_t * Cnf_ManWriteCnf( Cnf_Man_t * p, Vec_Ptr_t * vMapped, int nOutputs ); +extern Cnf_Dat_t * Cnf_ManWriteCnfOther( Cnf_Man_t * p, Vec_Ptr_t * vMapped ); +extern Cnf_Dat_t * Cnf_DeriveSimple( Aig_Man_t * p, int nOutputs ); +extern Cnf_Dat_t * Cnf_DeriveSimpleForRetiming( Aig_Man_t * p ); + + + +ABC_NAMESPACE_HEADER_END + + + +#endif + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + diff --git a/src/sat/cnf/cnfCore.c b/src/sat/cnf/cnfCore.c new file mode 100644 index 00000000..eb46e704 --- /dev/null +++ b/src/sat/cnf/cnfCore.c @@ -0,0 +1,296 @@ +/**CFile**************************************************************** + + FileName [cnfCore.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfCore.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Cnf_Man_t * s_pManCnf = NULL; + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Converts AIG into the SAT solver.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Int_t * Cnf_DeriveMappingArray( Aig_Man_t * pAig ) +{ + Vec_Int_t * vResult; + Cnf_Man_t * p; + Vec_Ptr_t * vMapped; + Aig_MmFixed_t * pMemCuts; + int clk; + // allocate the CNF manager + if ( s_pManCnf == NULL ) + s_pManCnf = Cnf_ManStart(); + // connect the managers + p = s_pManCnf; + p->pManAig = pAig; + + // generate cuts for all nodes, assign cost, and find best cuts +clk = clock(); + pMemCuts = Dar_ManComputeCuts( pAig, 10, 0 ); +p->timeCuts = clock() - clk; + + // find the mapping +clk = clock(); + Cnf_DeriveMapping( p ); +p->timeMap = clock() - clk; +// Aig_ManScanMapping( p, 1 ); + + // convert it into CNF +clk = clock(); + Cnf_ManTransferCuts( p ); + vMapped = Cnf_ManScanMapping( p, 1, 0 ); + vResult = Cnf_ManWriteCnfMapping( p, vMapped ); + Vec_PtrFree( vMapped ); + Aig_MmFixedStop( pMemCuts, 0 ); +p->timeSave = clock() - clk; + + // reset reference counters + Aig_ManResetRefs( pAig ); +//ABC_PRT( "Cuts ", p->timeCuts ); +//ABC_PRT( "Map ", p->timeMap ); +//ABC_PRT( "Saving ", p->timeSave ); + return vResult; +} + +/**Function************************************************************* + + Synopsis [Converts AIG into the SAT solver.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_Derive( Aig_Man_t * pAig, int nOutputs ) +{ + Cnf_Man_t * p; + Cnf_Dat_t * pCnf; + Vec_Ptr_t * vMapped; + Aig_MmFixed_t * pMemCuts; + int clk; + // allocate the CNF manager + if ( s_pManCnf == NULL ) + s_pManCnf = Cnf_ManStart(); + // connect the managers + p = s_pManCnf; + p->pManAig = pAig; + + // generate cuts for all nodes, assign cost, and find best cuts +clk = clock(); + pMemCuts = Dar_ManComputeCuts( pAig, 10, 0 ); +p->timeCuts = clock() - clk; + + // find the mapping +clk = clock(); + Cnf_DeriveMapping( p ); +p->timeMap = clock() - clk; +// Aig_ManScanMapping( p, 1 ); + + // convert it into CNF +clk = clock(); + Cnf_ManTransferCuts( p ); + vMapped = Cnf_ManScanMapping( p, 1, 1 ); + pCnf = Cnf_ManWriteCnf( p, vMapped, nOutputs ); + Vec_PtrFree( vMapped ); + Aig_MmFixedStop( pMemCuts, 0 ); +p->timeSave = clock() - clk; + + // reset reference counters + Aig_ManResetRefs( pAig ); +//ABC_PRT( "Cuts ", p->timeCuts ); +//ABC_PRT( "Map ", p->timeMap ); +//ABC_PRT( "Saving ", p->timeSave ); + return pCnf; +} + +/**Function************************************************************* + + Synopsis [Converts AIG into the SAT solver.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DeriveOther( Aig_Man_t * pAig ) +{ + Cnf_Man_t * p; + Cnf_Dat_t * pCnf; + Vec_Ptr_t * vMapped; + Aig_MmFixed_t * pMemCuts; + int clk; + // allocate the CNF manager + if ( s_pManCnf == NULL ) + s_pManCnf = Cnf_ManStart(); + // connect the managers + p = s_pManCnf; + p->pManAig = pAig; + + // generate cuts for all nodes, assign cost, and find best cuts +clk = clock(); + pMemCuts = Dar_ManComputeCuts( pAig, 10, 0 ); +p->timeCuts = clock() - clk; + + // find the mapping +clk = clock(); + Cnf_DeriveMapping( p ); +p->timeMap = clock() - clk; +// Aig_ManScanMapping( p, 1 ); + + // convert it into CNF +clk = clock(); + Cnf_ManTransferCuts( p ); + vMapped = Cnf_ManScanMapping( p, 1, 1 ); + pCnf = Cnf_ManWriteCnfOther( p, vMapped ); + Vec_PtrFree( vMapped ); + Aig_MmFixedStop( pMemCuts, 0 ); +p->timeSave = clock() - clk; + + // reset reference counters + Aig_ManResetRefs( pAig ); +//ABC_PRT( "Cuts ", p->timeCuts ); +//ABC_PRT( "Map ", p->timeMap ); +//ABC_PRT( "Saving ", p->timeSave ); + return pCnf; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Man_t * Cnf_ManRead() +{ + return s_pManCnf; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ClearMemory() +{ + if ( s_pManCnf == NULL ) + return; + Cnf_ManStop( s_pManCnf ); + s_pManCnf = NULL; +} + + +#if 0 + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_Derive_old( Aig_Man_t * pAig ) +{ +/* + // iteratively improve area flow + for ( i = 0; i < nIters; i++ ) + { +clk = clock(); + Cnf_ManScanMapping( p, 0 ); + Cnf_ManMapForCnf( p ); +ABC_PRT( "iter ", clock() - clk ); + } +*/ + // write the file + vMapped = Aig_ManScanMapping( p, 1 ); + Vec_PtrFree( vMapped ); + +clk = clock(); + Cnf_ManTransferCuts( p ); + + Cnf_ManPostprocess( p ); + Cnf_ManScanMapping( p, 0 ); +/* + Cnf_ManPostprocess( p ); + Cnf_ManScanMapping( p, 0 ); + Cnf_ManPostprocess( p ); + Cnf_ManScanMapping( p, 0 ); +*/ +ABC_PRT( "Ext ", clock() - clk ); + +/* + vMapped = Cnf_ManScanMapping( p, 1 ); + pCnf = Cnf_ManWriteCnf( p, vMapped ); + Vec_PtrFree( vMapped ); + + // clean up + Cnf_ManFreeCuts( p ); + Dar_ManCutsFree( pAig ); + return pCnf; +*/ + Aig_MmFixedStop( pMemCuts, 0 ); + return NULL; +} + +#endif + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfCut.c b/src/sat/cnf/cnfCut.c new file mode 100644 index 00000000..fef199c7 --- /dev/null +++ b/src/sat/cnf/cnfCut.c @@ -0,0 +1,376 @@ +/**CFile**************************************************************** + + FileName [cnfCut.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfCut.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" +#include "src/bool/kit/kit.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Allocates cut of the given size.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Cut_t * Cnf_CutAlloc( Cnf_Man_t * p, int nLeaves ) +{ + Cnf_Cut_t * pCut; + int nSize = sizeof(Cnf_Cut_t) + sizeof(int) * nLeaves + sizeof(unsigned) * Abc_TruthWordNum(nLeaves); + pCut = (Cnf_Cut_t *)Aig_MmFlexEntryFetch( p->pMemCuts, nSize ); + pCut->nFanins = nLeaves; + pCut->nWords = Abc_TruthWordNum(nLeaves); + pCut->vIsop[0] = pCut->vIsop[1] = NULL; + return pCut; +} + +/**Function************************************************************* + + Synopsis [Deallocates cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutFree( Cnf_Cut_t * pCut ) +{ + if ( pCut->vIsop[0] ) + Vec_IntFree( pCut->vIsop[0] ); + if ( pCut->vIsop[1] ) + Vec_IntFree( pCut->vIsop[1] ); +} + +/**Function************************************************************* + + Synopsis [Creates cut for the given node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Cut_t * Cnf_CutCreate( Cnf_Man_t * p, Aig_Obj_t * pObj ) +{ + Dar_Cut_t * pCutBest; + Cnf_Cut_t * pCut; + unsigned * pTruth; + assert( Aig_ObjIsNode(pObj) ); + pCutBest = Dar_ObjBestCut( pObj ); + assert( pCutBest != NULL ); + assert( pCutBest->nLeaves <= 4 ); + pCut = Cnf_CutAlloc( p, pCutBest->nLeaves ); + memcpy( pCut->pFanins, pCutBest->pLeaves, sizeof(int) * pCutBest->nLeaves ); + pTruth = Cnf_CutTruth(pCut); + *pTruth = (pCutBest->uTruth << 16) | pCutBest->uTruth; + pCut->Cost = Cnf_CutSopCost( p, pCutBest ); + return pCut; +} + +/**Function************************************************************* + + Synopsis [Deallocates cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutPrint( Cnf_Cut_t * pCut ) +{ + int i; + printf( "{" ); + for ( i = 0; i < pCut->nFanins; i++ ) + printf( "%d ", pCut->pFanins[i] ); + printf( " } " ); +} + +/**Function************************************************************* + + Synopsis [Allocates cut of the given size.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutDeref( Cnf_Man_t * p, Cnf_Cut_t * pCut ) +{ + Aig_Obj_t * pObj; + int i; + Cnf_CutForEachLeaf( p->pManAig, pCut, pObj, i ) + { + assert( pObj->nRefs > 0 ); + pObj->nRefs--; + } +} + +/**Function************************************************************* + + Synopsis [Allocates cut of the given size.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutRef( Cnf_Man_t * p, Cnf_Cut_t * pCut ) +{ + Aig_Obj_t * pObj; + int i; + Cnf_CutForEachLeaf( p->pManAig, pCut, pObj, i ) + { + pObj->nRefs++; + } +} + +/**Function************************************************************* + + Synopsis [Allocates cut of the given size.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutUpdateRefs( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, Cnf_Cut_t * pCutRes ) +{ + Cnf_CutDeref( p, pCut ); + Cnf_CutDeref( p, pCutFan ); + Cnf_CutRef( p, pCutRes ); +} + +/**Function************************************************************* + + Synopsis [Merges two arrays of integers.] + + Description [Returns the number of items.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline int Cnf_CutMergeLeaves( Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int * pFanins ) +{ + int i, k, nFanins = 0; + for ( i = k = 0; i < pCut->nFanins && k < pCutFan->nFanins; ) + { + if ( pCut->pFanins[i] == pCutFan->pFanins[k] ) + pFanins[nFanins++] = pCut->pFanins[i], i++, k++; + else if ( pCut->pFanins[i] < pCutFan->pFanins[k] ) + pFanins[nFanins++] = pCut->pFanins[i], i++; + else + pFanins[nFanins++] = pCutFan->pFanins[k], k++; + } + for ( ; i < pCut->nFanins; i++ ) + pFanins[nFanins++] = pCut->pFanins[i]; + for ( ; k < pCutFan->nFanins; k++ ) + pFanins[nFanins++] = pCutFan->pFanins[k]; + return nFanins; +} + +/**Function************************************************************* + + Synopsis [Computes the stretching phase of the cut w.r.t. the merged cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline unsigned Cnf_TruthPhase( Cnf_Cut_t * pCut, Cnf_Cut_t * pCut1 ) +{ + unsigned uPhase = 0; + int i, k; + for ( i = k = 0; i < pCut->nFanins; i++ ) + { + if ( k == pCut1->nFanins ) + break; + if ( pCut->pFanins[i] < pCut1->pFanins[k] ) + continue; + assert( pCut->pFanins[i] == pCut1->pFanins[k] ); + uPhase |= (1 << i); + k++; + } + return uPhase; +} + +/**Function************************************************************* + + Synopsis [Removes the fanin variable.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutRemoveIthVar( Cnf_Cut_t * pCut, int iVar, int iFan ) +{ + int i; + assert( pCut->pFanins[iVar] == iFan ); + pCut->nFanins--; + for ( i = iVar; i < pCut->nFanins; i++ ) + pCut->pFanins[i] = pCut->pFanins[i+1]; +} + +/**Function************************************************************* + + Synopsis [Inserts the fanin variable.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutInsertIthVar( Cnf_Cut_t * pCut, int iVar, int iFan ) +{ + int i; + for ( i = pCut->nFanins; i > iVar; i-- ) + pCut->pFanins[i] = pCut->pFanins[i-1]; + pCut->pFanins[iVar] = iFan; + pCut->nFanins++; +} + +/**Function************************************************************* + + Synopsis [Merges two cuts.] + + Description [Returns NULL of the cuts cannot be merged.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Cut_t * Cnf_CutCompose( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int iFan ) +{ + Cnf_Cut_t * pCutRes; + static int pFanins[32]; + unsigned * pTruth, * pTruthFan, * pTruthRes; + unsigned * pTop = p->pTruths[0], * pFan = p->pTruths[2], * pTemp = p->pTruths[3]; + unsigned uPhase, uPhaseFan; + int i, iVar, nFanins, RetValue; + + // make sure the second cut is the fanin of the first + for ( iVar = 0; iVar < pCut->nFanins; iVar++ ) + if ( pCut->pFanins[iVar] == iFan ) + break; + assert( iVar < pCut->nFanins ); + // remove this variable + Cnf_CutRemoveIthVar( pCut, iVar, iFan ); + // merge leaves of the cuts + nFanins = Cnf_CutMergeLeaves( pCut, pCutFan, pFanins ); + if ( nFanins+1 > p->nMergeLimit ) + { + Cnf_CutInsertIthVar( pCut, iVar, iFan ); + return NULL; + } + // create new cut + pCutRes = Cnf_CutAlloc( p, nFanins ); + memcpy( pCutRes->pFanins, pFanins, sizeof(int) * nFanins ); + assert( pCutRes->nFanins <= pCut->nFanins + pCutFan->nFanins ); + + // derive its truth table + // get the truth tables in the composition space + pTruth = Cnf_CutTruth(pCut); + pTruthFan = Cnf_CutTruth(pCutFan); + pTruthRes = Cnf_CutTruth(pCutRes); + for ( i = 0; i < 2*pCutRes->nWords; i++ ) + pTop[i] = pTruth[i % pCut->nWords]; + for ( i = 0; i < pCutRes->nWords; i++ ) + pFan[i] = pTruthFan[i % pCutFan->nWords]; + // move the variable to the end + uPhase = Kit_BitMask( pCutRes->nFanins+1 ) & ~(1 << iVar); + Kit_TruthShrink( pTemp, pTop, pCutRes->nFanins, pCutRes->nFanins+1, uPhase, 1 ); + // compute the phases + uPhase = Cnf_TruthPhase( pCutRes, pCut ) | (1 << pCutRes->nFanins); + uPhaseFan = Cnf_TruthPhase( pCutRes, pCutFan ); + // permute truth-tables to the common support + Kit_TruthStretch( pTemp, pTop, pCut->nFanins+1, pCutRes->nFanins+1, uPhase, 1 ); + Kit_TruthStretch( pTemp, pFan, pCutFan->nFanins, pCutRes->nFanins, uPhaseFan, 1 ); + // perform Boolean operation + Kit_TruthMux( pTruthRes, pTop, pTop+pCutRes->nWords, pFan, pCutRes->nFanins ); + // return the cut to its original condition + Cnf_CutInsertIthVar( pCut, iVar, iFan ); + // consider the simple case + if ( pCutRes->nFanins < 5 ) + { + pCutRes->Cost = p->pSopSizes[0xFFFF & *pTruthRes] + p->pSopSizes[0xFFFF & ~*pTruthRes]; + return pCutRes; + } + + // derive ISOP for positive phase + RetValue = Kit_TruthIsop( pTruthRes, pCutRes->nFanins, p->vMemory, 0 ); + pCutRes->vIsop[1] = (RetValue == -1)? NULL : Vec_IntDup( p->vMemory ); + // derive ISOP for negative phase + Kit_TruthNot( pTruthRes, pTruthRes, pCutRes->nFanins ); + RetValue = Kit_TruthIsop( pTruthRes, pCutRes->nFanins, p->vMemory, 0 ); + pCutRes->vIsop[0] = (RetValue == -1)? NULL : Vec_IntDup( p->vMemory ); + Kit_TruthNot( pTruthRes, pTruthRes, pCutRes->nFanins ); + + // compute the cut cost + if ( pCutRes->vIsop[0] == NULL || pCutRes->vIsop[1] == NULL ) + pCutRes->Cost = 127; + else if ( Vec_IntSize(pCutRes->vIsop[0]) + Vec_IntSize(pCutRes->vIsop[1]) > 127 ) + pCutRes->Cost = 127; + else + pCutRes->Cost = Vec_IntSize(pCutRes->vIsop[0]) + Vec_IntSize(pCutRes->vIsop[1]); + return pCutRes; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfData.c b/src/sat/cnf/cnfData.c new file mode 100644 index 00000000..3d3cdf37 --- /dev/null +++ b/src/sat/cnf/cnfData.c @@ -0,0 +1,4789 @@ +/**CFile**************************************************************** + + FileName [cnfData.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfData.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static const char s_Data3[82] = "!#&()*+,-.0123456789:;<=>?ABCDEFGHIJKLMNOPQRSTUVWXYZ[]abcdefghijklmnopqrstuvwxyz|"; + +static const char * s_Data4[] = { +"! B a . 8 .B 8a K !K T Ta j 8j Tj s ( + (B +a (. +8 .B( +8a (K +K T( +T j( ", +"+j Tj( s+ E !E H Ha E. 8E H. H8 EK EK! HT HTa jE 8jE Hj sH d +d Hd g d. 8d ", +"Hd. g8 dK +dK Td gT dj +jd Hjd gs 2 !2 2B a2 5 58 5B 5a 2K 2K! 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T<M a<M <Mj 8<M T", +"M<j s<M <*L +<L <L*B +La< *L<. +L8< *B<L. a*L8< <M* +<M <MT* T<+M M*<j 8<+M", +" <M*Tj +<sM <EL !E<L H<L HLa< EL<. <E8L <LH. HL8< <ME <!ME H<M a<HM Mj<E 8E", +"<M <MHj H<sM <dL +L<d HL<d g<L dL<. 8L<d <dLH. 8<gL <dM <d+M <dHM g<M dM<j ", +"<d8M <dMHj s<gM 4<L <L4! <L4B 4La< 5<L 4L8< <L5B 5La< 4M< 4!<M T<4M a<4M 5<", +"M 8<4M T<5M 4Ms< =L =+L =BL =aL =5L >=L 5B=L >L=a =M =M+ =TM =aM =M5 >M= 5T", +"=M s=M <E4L 4<E!L 4LH< 4Ha<L <E5L 48<EL HL5< 4H8<L 4E<M <ME4! H<4M 4HMa< 5E", +"<M 48M<E 5<HM s<H4M =dL +d=L =HL g=L 5d=L =d>L H5=L >Lg= =Md +M=d =HM g=M 5", +"d=M =d>M H5=M >Mg= <LN !L<N NB<L <LaN N.<L <N8L <LN.B 8<aLN Q<M Q!<M QT<M a", +"MQ< QM<j 8MQ< <MjQT Q<sM *L<N <L+N *B<LN a*L<N <*LN. +<8LN <LN*B. 8<La*N <M", +"Q* Q<+M <M*QT aM*Q< <M*Qj +Q<8M Q<TM*j s<+QM W<L <LW! HLW< WLa< <LW. WL8< H", +"<WL. 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U<D Ua< U<. U8< U.D< D8U< U<M U!<", +"M V< V<a U<j 8<Uj V<j s<V U<* U+< D<U* +DU< <*U. +<U8 U<D*. U+<D8 <MU* +MU<", +" V<* V+< <jU* +<Uj <jV* V+s< U<E <EU! UH< H<Ua <EU. UE8< U.H< H8U< UE<M <ME", +"U! V<H H<Va UE<j U8<ME H<Vj sHV< U<d +<Ud H<Ud gU< U.<d 8<Ud UH<d. U8g< <MU", +"d <dMU+ V<d gV< <dUj <dMU8 <dVj s<gV 4U< 4!U< U<4D U<4a U5< U<48 5DU< 5aU< ", +"U<4M <M!4U V4< 4aV< U<4j 4U8<M V5< V4s< =U =U+ =UD =Ua =U5 =U> U5=D >U=D =U", +"M U+=M V= V=+ =Uj =U>M V=5 s=V 4EU< 4U<!E U<4H 4UHa< UE5< 4U8<E H5U< 4UH8< ", +"<ME4U 4UE<M! 4HV< V4Ha< 4Uj<E <ME4U8 H5V< s<V4H =Ud U+=d =UH g=U U5=d =d>U ", +"UH=5 g>=U Ud=M =U+dM V=H V=g Ud=j >M=Ud V5=H gVs= U<N <NU! UND< UNa< <NU. U", +"N8< U<DN. U8<DN UQ< Q!U< V<Q QaV< Q<Uj Q8U< Q<Vj sQV< <*UN UN+< U<D*N U+<DN", +" U<*N. U+<8N D<NU*. a*NU8< Q<U* +QU< Q<V* +QV< UQ<*j U+Q8< V<Q*j s<V+Q UW< ", +"U!W< H<UW WaU< U.W< W8U< UH<W. UH8W< W<UQ UW<Q! Z<V ZaV< W<Uj UW8Q< ZjV< VZ", +"s< W<Ud +WU< UH<W* UWg< UW<d. U+W8< UHW<d. gU<W8 Q<Ud U+WQ< V<Z* Z<gV <djUW", +" U+W<j Z<Vdj gV<sZ U<m U!<m D<Um a<Um 5<Um 8<Um U5<Dm U5a<m U<4Q <MmU! V<m ", +"a<Vm pU< U8p< Vp< s<Vp =Um U+=m Um=D Ua=m U5=m >m=U =U5Dm =U>Dm =UQ U+=Q V=", +"Q V+=Q p=U p>=U V=p Vps= U<4W 4UW<! H<Um 4UWa< 5WU< 4UW8< UH5W< UH8<m <MmUW", +" <M!4UW V4Z< Z4Va< UWp< pU<W8 Z<Vp Vp<sZ =Uv =+vU vU=H gv=U =5vU v>=U =UvH5", +" g=Uv> vU=Q =Uv+Q Z=V gVZ= pv=U p=Uv> VpZ= yV= ,U< U<& U<,D c<U ,.U< U8b< ,", +"UD<. U8c< b<M <MU& V<b c<V U<,j 8<bM ,jV< Vsc< U<b* -U< ,UD<* -Uc< ,U<*. U8", +"-< U<Db*. c-U8< <Mb* b<-M b<V* V-< ,Uj<* U<-j V<b*j s<V- ,EU< UE<& UHb< UHc", +"< ,U<E. ,U8<E ,UH<. c<UH8 bE<M <M&bE ,HV< cHV< ,Uj<E <&jUE V<bHj s<VcH U<,d", +" U<-d ,UH<d c<gU ,Ud<. -U8<d <d.,UH gc<U8 <dbM -U<dM ,dV< g<V- <dMbj -Uj<d ", +"V<d,j V-gs< ,4U 4&,U 4U,D ,4cU 4U,5 4U,8 ,4U5D U5c< 4b,M <M&4b V4, V4c< 4U,", +"j <M&b5 ,4V5 V4s, =bU =U- ,U=D c=U ,U=5 ->=U =bU5D =Uc> =bM -U=M V=b c=V ,U", +"=j =b>M V5=b V-s= ,E4U ,4U&E 4U,H c4U,H ,4U5E ,4U8E ,4UH5 c5<UH ,4UME <ME4U", +"& ,4VH c4V,H ,4UjE <ME4b8 V4,H5 s,V4H ,U=d =d-U ,U=H gc=U =bU5d =b>Ud =bHU5", +" c=g>U bd=M =bM-d Vd=b gVc= =bM5d >M=bd V=bH5 c=Vgs ,NU< UN<& ,UD<N U<cN ,U", +"<N. ,U8<N U<N,D. c<U8N UQb< Q<U& ,QV< V<cQ ,UQ<j <&jUQ V<bQj s<VcQ ,U<*N U<", +"-N U<Db*N c-U<N U<Nb*. -U8<N ,NU<D*. -U8c<N ,UQ<* UQ-< V<bQ* V<-Q UQ<b*j -U", +"Q8< bQ<V*j V-sQ< UWb< W<U& ,UHW< UWc< ,UW<. ,UW8< ,U.WD< cW<U8 W<bM <M&bW V", +"<Zb VZc< ,UW<j <&jUW Zb<Vj Zc<Vs ,UW<d UW-< UH<bW* c-WU< <d.,UW -UW8< ,.UHW", +"<d cW8gU< <dMbW -UWQ< Zb<Vd Z<V- ,UW<dj -UW<j ZbjV<d Z-Vs< 4U,m <mU& ,4UDm ", +"U<cm ,4U5m <m&U5 U5<,Dm c5<Um 4U,Q <MmU& ,4Vm V<cm ,4pU U<p& pbV< c<Vp ,U=m", +" -m=U =bUDm cm=U =bU5m =b>Um ,U5=Dm c=>Um ,U=Q -U=Q Vm=b =QV- pb=U =U-p =bV", +"p V=cp 4U,W <m&UW ,4UHm c4W,U ,4U5W ,4UW8 4UH,5W c5WU< <MmbW 4bW<M& V4Z, Zc", +"4V< pb<UW pU<W& Vp<Zb cp<VZ vb=U =U-v =bvUH =Ucv =bvU5 -vU>= =U5vD, cv=>U v", +"b=M -vU=Q =bVv V-Z= p=bvU -pUv= Vv,p= c=yV <k <k! <kB a<k 1<k 8<k 1B<k a<8k", +" 6M< 6!<M T<k a<6M l< l<8 l<T ls< 6*k +<k *B<k a<+k <k1* +k1< <kB1* ak*68 6", +"M* +<6M Tk6* T<+k l<* l+< 6Tl* s6l* <kE <!kE H<k a<Hk 1E<k 8E<k Hk1< 8<Hk 6", +"E<M <kEM! 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Z4e 4aZe pG< G8p< pGZ< Z4se fv= =+fv fv=H fvg= v=f5 v>f= =H", +"fv5 g=fv> =Qf =+fQ Z=f Zfg= fp= p=f> fpZ= yf= ,<e <&e <e,B <&ae <e,. <&8e ,", +"<e.B <&e8a <e,K <Ke& ,<Te <&Te ,<ej e&<j <je,T <&se <e,* -<e *B<,e a<-e ,<e", +"*. 8<-e ,<e*B. -8a<e ,<e*K <e-K ,T<e* T<-e <je,* <j-e ,T<ej* -<se ,G< G<& G", +"<,H G<,a ,.G< G<,8 ,GH<. ,G8H< ,KG< GK<& G<,T T<G& G<,j <&Gj ,GT<j ,Gs< f<,", +" f-< ,Hf< f-g< ,<f. -8f< fH<,. f-8g< ,<fK fK-< ,Tf< f<-T ,jf< f<-j fT<,j f-", +"s< ,4e 4e& 4B,e 4e,a 4e,5 4e,8 ,45eB ,48ae ,K4e 4Ke& 4e,T Te4& 4e,j e&4j ,4", +"T5e ,4se =e, -=e ,e=B -a=e ,5=e -=>e =B5,e >e-=a ,e=K -e=K ,T=e =e-T ,j=e =", +"e-j =T5,e -=se ,4G 4&,G 4G,H 4G,a 4G,5 4G,8 ,4GH5 ,4GH8 ,K4G ,4G&K 4G,T ,4G", +"T& 4G,j <&j4G ,4GHj ,4sG f=, f-= fH=, f-g= =,f5 ->f= =Hf,5 g=f-> f,=K =Kf- ", +"=,fT f-=T =,fj f-=j =Hjf, f-s= <e,N <Ne& ,<eNB aeN<& ,<eN. <&e8N <eN,.B ,8<", +"aeN ,<Qe <&Qe ,QT<e ,Qa<e <je,Q <&jQe ,QT<je s<Qe& ,<e*N <e-N ,<e*BN -a<eN ", +"<e*,N. -8<eN ,<*BeN. aeN-8< ,Q<e* Q<-e Q<e,T* -QT<e ,Q<ej* -Q8<e QT,j<e* s-", +"Q<e G<,W W<G& ,GHW< ,GaW< ,GW<. ,G8W< G<H,W. 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De4T 4DeTa I<4j I<j48 De4j 4Dse =I =I+ =DI =aI =I5 =I> 5D=I =D>e =IK +I=K", +" =TI +T=I =Ij >I=j 5T=I s=I G<4I I<!4G J4< 4aJ< 5IG< 4G8I< J5< 48J< I<K4G 4", +"GKI<! 4TJ< J4Ta< I<j4G 4G8I<j 4eJj J4s< =If f+=I J= J=g f5=I =If> J=5 J>= f", +"I=K =If+K J=T =TgJ fj=I f>=Ij J=j s=J I<N <!IN DNI< aNI< <NI. IN8< I<ND. D8", +"<IN QI< Q!I< D<QI aIQ< IjQ< 8IQ< I<jQD QIs< <*IN +NI< I<*DN +D<IN I<*N. +I<", +"8N D<NI*. a*N8I< I<Q* QI+< QD<I* +QDI< I<jQ* I<j+Q QD<I*j sI<+Q WI< W!I< J<", +"W WaJ< W.I< 8IW< W<J. W8J< QIG< GQ<I! ZJ< ZaJ< I<Wj I<jW8 JjZ< ZJs< WIf< WI", +"+< fWJ< gWJ< fWI<. f8WI< JfW<. Jf8W< QIf< fQ+I< JfZ< ZJg< fQI<j fQ8I< ZJ<fj", +" sJ<Zf I<m <!Im Dm4e I<am Im5< I<8m I<m5D I<m5a QI4e I<mQ! QD4e I<mQa pI< 8", +"Ip< 4Dpe pIs< =Im +I=m De=m aI=m 5I=m >m=I =D5Im >eD=m =QI +Q=I QD=I Qa=I p", +"=I p>=I pD=I sp=I WI4e I<mW! J<m a<Jm WI5< I<mG8 5WJ< 8<Jm I<mGQ I<!4GQ J4Z", +"< ZJ4a< G<pI pG<8I Jp< s<Jp =Iv =+vI J=v Jvg= =5vI v>=I v=J5 v>J= fQ=I =Qf+", +"I Z=J gZJ= =Ifp fp>=I Jp= yJ= h< h<& hD< hc< h<. h8< D<h. c<h8 h<K <&hK hT<", +" c<hT hj< 8<hj D<hj hs< h<* h-< D<h* c<h- <*h. -8h< hD<*. c-8h< <*hK -<hK T", +"<h* h<-T <jh* h<-j hT<*j s<h- hG< G<h& hJ< cJ< G<h. G8h< h.J< J8c< G<hK hG<", +"&K J<hT cTJ< G<hj h8G<j J<hj s<hJ hf< h<f- J<hf i< f<h. h<f8 Jf<h. i8< f<hK", +" f-<hK h<fT iT< h<fj f-jh< Jfjh< is< h4 h4& h4D hc4 h45 h48 4Dh5 c4h5 h4K 4", +"&hK h4T c4hT h4j 48hj 4Dhj hs4 h= h=- h=D c=h h=5 h>= h5=D c=h> h=K =Kh- h=", +"T hc=T h=j =jh> h5=T hs= h4G 4Gh& hJ4 cJh4 4Gh5 4Gh8 J4h5 J4h8 4GhK h4G&K J", +"4hT cJ4hT 4Ghj h48Gj J4hj h4sJ h=f f-h= J=h i= f=h5 f>h= h5J= i>= =Khf h=f-", +"K hJ=T i=T hf=j h=jf> hJ=j is= h<N <&hN D<hN hNc< <Nh. 8<hN hD<N. c<8hN hQ<", +" Q<h& QDh< c<hQ Q<hj Q8h< hQD<j s<hQ <*hN -<hN hD<*N c-<hN h<*N. h-8<N D<*h", +"N. h-8c<N Q<h* h<-Q hQD<* c-Qh< hQ<*j h-Q8< QD<hj* hs-Q< hW< W<h& J<hW c<hW", +" W<h. W8h< J<Wh. cJ<W8 GQh< hWQ<& hZ< Z<hc W<hj hW8Q< Z<hj s<hZ fWh< h<-W J", +"fWh< iW< hfW<. hf8W< hfWJ<. W8i< h<fQ f-Qh< Z<hf iZ< hfQ<j fQ8h< hZf<j sZi<", +" h4m 4&hm 4Dhm c4hm 5<hm 48hm h45Dm c5<hm h4Q 4Qh& 4QhT c4hQ hp4 p<h8 pDh4 ", +"h4cp h=m -=hm hm=D hmc= =5hm >=hm h=5Dm c=h>m h=Q h-=Q hQ=D hc=Q hp= h=-p =", +"Dhp s=hp h4W 4Wh& J4hW c4hW 4Wh5 4Wh8 J5<hW cJ5W< 4GhQ h4WQ& hZ4 h4Zc pGh4 ", +"hp4G8 h4Jp sZh4 hv= -vh= J=hv iv= v=h5 v>h= J=hv5 v>i= =Qhv h=Q-v hZ= iZ= h", +"=fp fp-h= Z=hp yi= 6e 6e! 6eB 6ae 6e1 68e 6B1e 1a6e 6eK eK6! 6Te Te6a 6ej 8", +"e6j 1T6e s6e 6e* 6+e *B6e +e6a 1e6* 1+6e 6e1*B 6+e1a e*6K 6K+e Te6* +T6e ej", +"6* +e6j 6Te1* 6+se 6G< 6!G< 6He Ga6e 1G< G86e 1H6e Ga1< 6KG< 6G<!K GT6e 6GT", +"a< G<6j 6G8<j GT1< 6Gs< f6 f6+ f6H gf6 f61 f68 6Hf1 f6g1 f6K 6+fK f6T fTg6 ", +"f6j 6+fj 6Hfj sf6 4e6 6!4e 4B6e 6a4e 7e 7e8 7eB 7ae 4K6e 4e6!K 6T4e 4Te6a 7", +"ej 8e7j 7Te 7se =6e 6+=e 6e=B 6a=e 7=e >e7 =B7e 7a>e 6e=K =6+eK 6T=e =T6+e ", +"7e=j >j7e 7e=T >e7s 6G4e 4G6<! 6H4e 4Ga6e 7G< G87e 7He Ga7e 4G6<K 6GK4e! 4G", +"T6e 6GT4ae G<7j 7G8<j GT7e 7Gs< f=6 =+f6 f6=H f=g6 7f 7f> 7fH g7f =Kf6 f=6+", +"K f6=T g=f6T 7fj fj7> 7fT sf7 6eN eN6! eN6B 6Nae 6N1e 6N8e 6e1NB 68eaN 6Qe ", +"Q!6e Qe6T Qa6e 1Q6e Q86e 6Qe1T 6Qse e*6N 6N+e 6e*NB 6+eaN 6e1*N 6+e1N 1eN6*", +"B aeN68* Qe6* +Q6e 6QeT* 6+QTe 6Qe1* 6+Q1e 1Qe6T* s6e+Q 6We 6!We He6W Wa6e ", +"1W6e W86e 6He1W 6H8We GQ6e 6GQ<! 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He6m aem6G 7We W87e He7W Wa7e 4GQ6e <m!6GQ 4eZ6 Z4e6a ", +"pG7e 7pG8< 7Ze se7Z fv6 f+v6 fHv6 fvg6 7fv f>7v fv7H gf7v f6=Q =Qf6+ fvZ6 Z", +"f6g= 7fp 7pf> 7Zf y7f ?e ?e& ?Be ?ae ?1e ?:e 1e?B :e?a ?eK e&?K ?Te Te?a ?j", +"e :e?j 1T?e s?e ?e* ?-e *B?e -a?e 1e?* :e?- ?B1e* ?:-ae e*?K -e?K Te?* ?e-T", +" ej?* ?e-j ?T1e* ?-se ?G ?G& ?GH ?Ga ?G1 ?:G 1G?H :G?H ?GK G&?K ?GT GT?a ?G", +"j :G?j 1G?T s?G ?f ?f- ?fH g?f ?f1 :f? f1?H :fg? ?fK ?Kf- ?fT ?Tgf ?fj ?j:f", +" f1?T s?f ?4e 4e?& 4e?B 4a?e 7?e 7:e ?B7e 7e?a 4e?K ?4e&K 4T?e ?T4ae 7e?j 7", +"j:e 7e?T 7?se ?=e =e?- ?B=e =e?a 7e?= Ae ?=7eB Aae ?e=K ?-=eK =e?T ?-T=e =e", +"?j Aje ?T7=e Ase ?G4 4G?& 4G?H 4G?a ?G7 7:?G 7G?H 7G?a 4G?K ?G4&K 4G?T ?GT4", +"a 7G?j ?:G7j 7G?T ?G7s ?f= f-?= =H?f ?fg= 7f? Af ?H7f Agf =K?f ?f-=K =T?f ?", +"fTg= =j?f Afj ?T7f Asf ?eN e&?N eN?B ae?N 1e?N ?N:e ?B1eN ?:aeN ?Qe Qe?& Qe", +"?T Qa?e 1Q?e :e?Q ?Q1Te ?Qse e*?N -e?N ?Be*N ?-aeN ?1e*N ?:-eN 1e*?BN :-e?a", +"N Qe?* ?e-Q ?QTe* ?-QTe ?Q1e* ?:Q-e 1Qe?T* s?-Qe ?GW G&?W He?W Ga?W 1G?W :G", +"?W ?G1HW ?:GWa ?GQ GQ?& ?ZG Ze?a 1G?Q :G?Q Z1?G sG?Z ?fW f-?W fH?W ?Wgf f1?", +"W ?W:f ?f1HW g?:fW ?fQ f-?Q ?Zf ?fZ- f1?Q ?Q:f ?jZf ?Zsf ?me em?& em?B ae?m", +" 7e?m :e?m ?m7eB ?:mae 4Q?e ?Q4e& Te?m ?Qa4e ?pe 7e:p pe?T se?p =e?m ?e-m ?", +"=emB ?-mae ?=7em Aem 7=e?mB aeAm =e?Q ?-Q=e ?Tm=e ?-Tem pe?= Ape ?p=Te spAe", +" ?Gm Gm?& Gm?H Ga?m 7G?W :G?m ?G7Hm ?:GHm 4G?Q ?GQ4& Z4?G ?Z4Ga ?pG ?G:p ?G", +"7Z sG?p ?vf -v?f fv?H gf?v 7f?v Afv ?v7fH gfAv =Q?f ?fQ-v ?fZ= g?Zfv ?pf Ap", +"f 7f?Z yAf 6I< 6!I< 6De De6a 1I< 8I6e 1D6e D86e 6KI< I<K6! De6T 6DeTa I<6j ", +"I<j68 De6j 6Dse 6I* +I6e De6* +D6e 1I6* +I1< 6De1* 6+D1e 6KI* 6+I<K TI6* 6+", +"DTe I*6j I<j6+ I*j6D 6Is* G<6I I<!6G J6< 6aJ< G<1I 6G8I< J1< 68J< I<K6G 6GK", +"I<! 6TJ< J6Ta< I<j6G 6G8I<j 6eJj J6s< f6I 6+fI Jf6 Jfg6 6If1 68fI f6J1 J1g<", +" 6IfK f6+IK fTJ6 Jf6gT 6Ifj f68Ij f6Jj Jfs6 6I4e I<!46 6D4e 4De6a 7I< 8I7e ", +"7De D87e I<K46 6IK4e! 4De6T 6TI4ae I<7j 7I8<j De7T 7Dse =I6 6+=I 6D=I 6a=I ", +"=I7 7>=I 7D=I 7D>e 6I=K =I6+K 6T=I =TI6+ 7I=j 7>I=j 7T=I =I7s 4G6I< 4G6I<! ", +"4eJ6 J46a< G<7I 7G8I< 7J< J87e 4G6I<K 6!4GI<K J46T< 4TeJ6a 7GI<j I<j7G8 J<7", +"T s<7J f6=I =If6+ J=6 g6J= 7fI 7If> 7Jf J>7f =If6K f6+=IK J6=T J=g6T fj7I 7", +"f>Ij =T7J 7Jsf 6NI< I<N6! 6NDe 6DeaN 1NI< 68I<N 6De1N 6D8eN QI6e 6QI<! QD6e", +" 6QDae QI1< 6Q8I< 6QD1e sI<6Q 6NI* 6+I<N 6De*N 6+DeN 6I*1N 68I*N I<N1D* a*N", +"68I QI6* 6+QI< 6QDI* 6+QDe I*j6Q 6Q8I* 6QDI*j sI*6Q WI6e 6WI<! 6WJ< J6Wa< W", +"I1< 6W8I< 1WJ< J68W< 6GQI< I<!6GQ J6Z< ZJ6a< I<j6W 6W8I<j J1Z< sJ6Z< 6WfI f", +"6+WI JWf6 Jf6gW f61WI f68WI Jf61W Jf6W8 6QfI f6Q+I JfZ6 Zf6gJ f6Q1I f6Q8I Z", +"f6J1 sf6ZJ I<6m I<m6! De6m aem6D I<7m 7I8<m De7m 7De8m I<m6Q Im!6Qe I<m6T 6", +"QDaem pI7e 7pI8< pD7e 7sIp< 6I=m =I6+m =D6Im =aI6m =m7I 7>I=m 7De=m 7>Dem 6", +"Q=I =QI6+ =QD6I =Qa6I 7p=I p=I7> p=D7I s=I7p I<m6G I<!6Gm 6eJm J6ma< WI7e 7", +"WI8< J<7W 7JW8< 6GQI<m I<6mGQ! 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GLH< GLa< <LG. GL8< G<HL. G8<HL G<M G!<M ", +"H<GM a<GM <MGj 8<GM GT<Mj G<sM f<L +<fL H<fL f<gL <Lf. 8<fL fH<L. f8<gL fM<", +" +<fM H<fM fMg< <Mfj 8<fM fT<Mj fMs< 4eL eL4! eL4B 4Lae 4L5e 4L8e 4e5LB 48e", +"aL 4Me 4!Me Te4M aM4e 5M4e 8M4e 4Te5M 4Mse =eL +e=L eL=B ae=L 5e=L =e>L =B5", +"eL >e=aL =Me +M=e Te=M aM=e 5M=e =M>e =T5Me se=M 4LG< 4G<!L 4LHe 4Ga<L GL5<", +" 4G8<L 4He5L 4H8eL G<4M 4GM<! HM4e aMe4G 5<GM 4G8<M 4HM5e s4G<M f=L f+=L fH", +"=L =Lgf =Lf5 >Lf= =Hf5L g=f>L =Mf =+fM fT=M gf=M f5=M =Mf> =HMf5 =Msf eL<N ", +"<eL!N <eLNB aeL<N <eLN. 8<eLN eLN<.B 8<LaeN <MQe <MeQ! <MeQT aMeQ< <MeQj Q8", +"<Me Q<TMej s<QMe <e*LN +<eLN <eL*BN +<LaeN e*L<N. 8<L+eN NB*L<e. a<+e8LN <M", +"eQ* +Q<Me Q<TMe* +Q<aMe Q<Mej* Q8<+Me QMejT<* +Q<seM GLW< G<W!L G<HWL Ga<WL", +" G<WL. G8<WL W<LHe. aeLW8< W<GM GQ<M! G<ZM Z<GaM GQ<Mj GQ8<M Z<GMj sZ<GM W<", +"fL f+W<L fHW<L gfW<L fW<L. f8W<L H<WfL. g<Wf8L W<fM fQ+<M fMZ< Zfg<M fQ<Mj ", +"fQ8<M Zf<Mj sfZ<M 4Lem <mLe! <mLeB aem4L <mL5e 48emL 5<LemB aeL8<m Qe4M <Mm", +"e! <MmTe aMe4Q 4Mpe p<8Me p<TMe sp<Me em=L =+emL =BemL =aemL =5emL >e=mL em", +"L=B5 =am>eL Qe=M =Q+Me =QTMe =QaMe pe=M p=>Me p=TMe s=pMe 4LWe 4We!L 4HeWL ", +"4WaeL 4We5L 4W8eL <mLH5e aeL4W8 WM4e <MmG! 4MZe Z4eaM G<pM pG<8M Zp<GM Z4es", +"M =Lfv fv=+L =HfvL g=fvL fv=5L f>v=L fv5=HL f>vg=L fv=M =Qf+M =MZf g=MZf =M", +"fp fp>=M fpZ=M =Myf <e,L <Le& ,<eLB aeL<& ,<eL. <&e8L <eL,.B ,8<aeL ,<Me Me", +"<& <Me,T aMe<& <Me,j <M&8e ,T<Mej s<Me& ,<e*L <e-L ,<e*BL -a<eL <e*,L. -8<e", +"L ,<*BeL. aeL-8< <Me,* <M-e ,T<Me* -T<Me ,M<ej* -M8<e <M,jTe* s-<Me ,LG< GL", +"<& ,GH<L ,Ga<L ,G<L. ,G8<L G<L,H. <&LH8e G<,M <MG& ,GT<M <M> ,GM<j <M&G8 ", +"G<M,Hj sG<,M ,<fL -<fL fH<,L f-<gL f<,L. f-8<L ,H<fL. g-<f8L ,Mf< f<-M fT<,", +"M f-T<M fM<,j f-M8< ,HMfj< sf-<M ,L4e 4Le& ,4eLB ,4aeL ,45eL ,48eL 4eL,5B a", +"eL,48 4e,M Me4& ,4TMe aMe,4 ,4M5e <M&5e 4Te,5M s4e,M ,e=L -e=L =Be,L =a-eL ", +"=5e,L >e-=L ,5e=BL =a->eL ,M=e =e-M =TM,e =T-Me =M5,e >M-=e ,5T=Me s=-Me ,L", +"4G ,4G&L ,4GHL ,4GaL ,4G5L ,4G8L ,4LH5e <&LG5a 4G,M <M&4G ,4GHM Me&4H ,4G5M", +" <M&G5 4GT,5M s4G,M f,=L =Lf- =Hf,L g=f-L f=5,L f>-=L f5,=HL f>-g=L =,fM f-", +"=M =HMf, g=Mf- =Mf,5 f>M-= =H,f5M sf=-M ,<eLN <&eLN <eL,NB <&LaeN <eL,N. 8<", +"Le&N .B,L<eN a<8e,LN <Me,Q <M&Qe ,QT<Me Qa<Me& ,Q<Mej Q8<Me& QMej,T< <M&seQ", +" <e*,LN -<eLN NB*L,<e aeL-<N N.*L,<e 8<e-LN <e,.NB*L ae-L8<N ,Q<Me* -Q<Me Q", +"TM*,<e aMe-Q< QMej,<* Q8<-Me T*,M<jQe -Q<seM ,GW<L G<&WL G<H,WL aeLW<& G<L,", +"W. <&LW8e WL,.G<H WLa<,G8 ,GQ<M <M&GQ Z<G,M Z<&GM G<M,Wj GQ8<M& ,GMZ<j s<MZ", +"e& fW<,L f-W<L ,HWf<L gf<-WL ,W<fL. -W<f8L ,<fLHW. gWf8-<L fQ<,M f-Q<M Zf<,", +"M Z-f<M ,WMfj< f8<-WM fM<Z,j Z-<sfM <mL,e <m&eL ,4LemB aeL<m& ,45emL <mL5e&", +" 5L<m,eB a<8me&L <Mm,e <Mme& ,4TMem <M&aem p<M,e p<&Me ,4TpeM s<Mpe& =em,L ", +"-=emL emL=B, -me=aL emL=5, -=m>eL 5m=L,eB >m=a-eL =QM,e =Q-Me Mem=T, =Te-Mm", +" p=M,e -p=Me peT=M, s=M-pe ,4GWL <m&GL emL,4H aeL,4W <mL,G5 <mL,G8 ,L4GH5W ", +"4G,8amL <Mm,G <MmG& Z4e,M Z4eM& pG<,M pG<M& Z4MpG, s<MpG& fv=,L -vf=L fv,=H", +"L -vfg=L v=,f5L -v=f>L =,f5vHL >Lg=-vf =Qf,M -vMf= Z=f,M Z-=fM fp=,M fp-=M ", +"Z=Mfp, yf-=M U<I U!I< D<Ue aIU< U.I< 8IU< I<.UD U8<De I<M <!IM V<I aIV< I<U", +"j I<8M I<Vj V<sI I<U* +IU< I<*UD U+<De I<*U. 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J8WgU< UQf< fUQ+< Z<Vf VfZg< fUQ<j f", +"UQ8< VfZ<j sfVZ< Um4e I<mU! I<mUD aem4U I<mU5 I<mU8 5D<Uem 4U8aem UQ4e I<Mm", +"! 4QVe V4eQa 4Upe pU<8I pIV< Vp<sI Ue=m =U+Im =UDIm =UaIm =U5Im >eU=m U5e=D", +"m >Im=Ua UQ=I =UQ+I Ve=Q V=+QI pU=I p=U>e =IVp V>ep= UW4e 4UWe! U<Jm J<mUa ", +"4UW5e 4UW8e J5<UW J8<Um I<M4W I<!4WM V4Ze Z4Vae UGp< pUG8< J<Vp Jp<Vs fv=U ", +"=Ufv+ =UJv J=gvU =Ufv5 f>Uv= J=vU5 J>=vU fU=Q =Uf+Q VfZ= J=VgZ =Ufp fpU>= V", +"=Jp J=yV hU< U<h& U<hD hUc< U<h. U8h< hUD<. c<Uh8 hM< <Mh& Vh< c<Vh U<hj 8<", +"hM V<hj s<Vh U<h* h<-U hUD<* c-Uh< hU<*. -U8h< U<Dh*. hc8-U< <Mh* h<-M h<V*", +" V<h- hM<*j -Ujh< Vh<*j V-hs< UGh< G<U& hUJ< cUJ< hUG<. h8UG< J<Uh. cJ<U8 G", +"<hM hMG<& J<Vh VJc< hMG<j h8MG< VhJ<j sJ<Vh h<fU f<-U JfUh< iU< fU<h. f-U8<", +" hJ<fU. U8i< h<fM f-U<M V<hf iV< fUjh< f-U<j Vfh<j s<iV h4U 4Uh& 4UhD hUc4 ", +"4Uh5 4Uh8 h4U5D c5<hU h4M 4Mh& Vh4 c4Vh 4Uhj 48hM V4h5 s4Vh h=U h-=U hU=D h", +"c=U h5=U =Uh> h=U5D c=h>U h=M h-=M V=h h=V- h5=M >Mh= =jVh V=hs 4UhG h4UG& ", +"hUJ4 cJ4hU h4UG5 h48UG J5<hU cJ5U< 4GhM h4MG& J4Vh Vh4cJ h4MG5 h48GM Vh4J5 ", +"hs4VJ hf=U f-=U hJ=U i=U h=fU5 f>Uh= J=hU5 =Ui> hf=M h=Mf- h=Vf iV= h=Mf5 h", +">Mf= J=Vh5 s=iV U<hN hU<&N hUD<N c<UhN hU<N. h8U<N U<DhN. h8Uc<N UQh< hQU<&", +" V<hQ VhcQ< hQU<j hQ8U< VhQ<j hsVQ< hU<*N -U<hN U<Dh*N hc<-UN U<*hN. h8<-UN", +" UDhN<*. hUc<-8N hQU<* -UQh< VhQ<* V-hQ< UQ<hj* -U<hQ8 hQ<V*j hsQV-< UWh< h", +"WU<& J<UhW cJ<UW hWU<. hW8U< hWUJ<. cWUJ8< W<hM hWM<& Z<Vh Zc<Vh hWM<j hW8<", +"M hZV<j hZsV< fUWh< f-UW< hJWfU< UWi< hW<fU. fU<hW8 hUJ<fW. iUW8< fUQh< f-U", +"Q< VfZh< Z<iV fU<hWj fU<-Wj hZ<Vfj iZVs< 4Uhm h4Um& h4UDm c<mhU h4U5m h48Um", +" U5<hmD c4Uh8m 4UhQ h4QU& V4hQ Vh4cQ pUh4 hp4U8 h4Vp cp<Vh hm=U h=-Um h=UDm", +" c=hUm h=U5m h>=Um h5U=Dm h>Uc=m hQ=U h=Q-U =QVh c=VhQ =Uhp -pUh= V=hp cp=V", +"h 4UhW h4WU& J<mhU cJ<Um h4WU5 h4WU8 J4Uh5W c4Uh5W 4WhM h4WM& Z4Vh hZ4Vc hp", +"4UG pUG<& Jp<Vh cpJV< =Uhv -vUh= J=hvU =Uiv hv=U5 hv>=U hvUJ=5 iv>=U =Mhv h", +"vM-= V=hZ Z=iV fpUh= fp-=U Jp=Vh yVi= 6ek 6!ke 6Bke ak6e <k1e 8k6e <kB1e ak", +"e68 6Me 6!Me Tk6e aM6e l<e 68le 6Tle s6le ke6* +k6e <kBe* ake6+ ke*1< 6+e8k", +" 6e1k*B 68eak* Me6* +M6e 6Tek* aMe6+ 6el* 6+le l<Te* ls<+e G<k G!<k H<Gk a<", +"Gk Gk1< 8<Gk 6He1k 6H8ke G<6M 6GM<! 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RHk HkRa R1E RE8k R1H 1HR8 kMRE RkM!E HkRT RHTak lR", +"E R8lE lHR sRlH Rdk +kRd HkRd gRk R1d 1+Rd 1HRd gR1 RkdM dkMR+ TkRd RTgk ld", +"R R+ld RHld glR Rk2 k2R! k2RB R2ak R15 5kR8 RB5k 1aR5 kMR2 RkM!2 R2Tk ak2RT", +" lR5 R5l8 R5lT l5sR R;k +kR; RBk; akR; R1; >kR RB1; R1>a RkM; k;MR+ TkR; ak", +";RT l;R l>R RTl; sRl> kER2 RkE!2 R2Hk ak2RH RE5k R158E 1HR5 R1H5a RkME2 kME", +"R2! RHTk2 RHTak2 R5lE lR58E RHl5 lsRH5 dkR; dk;R+ HkR; R;gk 1dR5 R1>d 1HR; ", +"gR>k dkMR; R+dk;M RH;Tk gRTk; R5ld >Rld RHl; gRl> kP kP! kPB akP R1P 8kP RB", +"1P 1PRa Sk S!k STk Sak Sl Sl8 SlT Ssl kP( +kP P(kB ak+P R(1P 1PR+ kP(1B akP", +"1+ Sk( S+k TkS( +TSk Sl( l+S STl( l+Ss RWk R!Wk HkP WkRa R1W 1WR8 1HRW 1WRa", +" SWk WkS! SZk ZkSa lWS S8lW lZS lZSs dkP +kRW dkHP gkP 1WRd 1+RW dkP1H R1gP", +" Sdk +WSk ZkSd gSk ldS S+lW SZld glS Rmk R!km RBkm akRm R1m 1mR8 RB1m 1aRm ", +"Skm kmS! TkSm akSm Slp lpS8 lTSp Slsp k;P +kRm kB;P k;aP 1mR; >kP k;P1B ak>", +"P S;k +kS; TkS; akS; l;S S>l lTS; Ssl> WkRm km!RW HkRm akmRH 1WR5 R1W8m 1HR", +"m akPH5 WkSm S!Wkm SmZk SZakm SplW SlpW8 SplZ SZpls vRk R+vk RHvk vRgk vR1 ", +"vR>k R1vH gk>P Svk vkS+ ZkSv gkSv lvS S>lv lZSv ylS R9 R9& R9B R9a R91 :R 9", +"1RB :Ra R9M 9MR& R9T 9TRa lR9 l:R R9lT s:R R9( R9+ 9(RB 9+Ra 91R( :R+ R91(B", +" R+:a R(9M 9MR+ R(9T 9+RT R9l( :Rl+ lR9T( s+:R R9E REk& R9H 9HRa 91RE :RE 9", +"HR1 :RH RE9M k&ERM 9HRT R9HT& R9lE lE:R R9lH :RlH R9d 9+Rd 9HRd gR9 9dR1 :R", +"d R9H1d g:R 9MRd dk&RM 9TRd R9gM R9ld :Rld lHR9d gRl: R92 R2k& 92RB R29a R9", +"5 :R5 RB95 R5:a R29M k&2RM R29T R9T&2 R9l5 l5:R 95RT s5:R R9; 9+R; RB9; 9aR", +"; 95R; :>R R95;B :a>R 9MR; k;&RM 9TR; aM;R9 R9l; :Rl> l;R9T :>sR 9ER2 k&ER2", +" R29H R9H&2 RE95 R5:E 9HR5 RH:5 R9ME2 R9EM&2 R9HT2 aM2R9H lR95E :R5lE lHR95", +" :RHl5 9dR; dk&R; 9HR; R9g; 95Rd >R:d R9H1; :>gR R9dM; R9dM;& R9HT; gR9T; l", +"dR95 l>:Rd lH;R9 g:Rl> R9P kP& RB9P 9PRa 9PR1 :RP kPB91 Ra:P S9 S9& S9T S9a", +" Sl9 S: lTS9 S:s R(9P 9PR+ kP(9B akP9+ kP(91 R+:P 9P(R1B :R+aP S9( S9+ 9TS(", +" 9+Sa l(S9 S:+ Sl9T( S+s: R9W 9WR& 9HRW 9WRa 9WR1 :RW R9H1W RH:W S9W 9WS& S", +"Z9 Z9Sa S9lW S:W S9lZ S:Z 9WRd 9+RW dkP9H R9gP dkP91 R+:W 9HPR1d :RgP S9d 9", +"+Sd Z9Sd gS9 S9ld S:d SZ9ld gS: R9m 9mR& RB9m 9aRm 95Rm :Rm R95mB Ra:m S9m ", +"9mS& 9TSm 9aSm Sp9 S:p STp9 :pSs 9mR; 9+Rm k;P9B ak;9P k;P95 :R>P k;B95P :>", +"Ram S9; 9+S; 9TS; 9aS; S9l; S:> Sp9T; s:S> 9WRm km&RW 9HRm km&RH 95RW R5:W ", +"R9H1m RH:m 9WSm S9Wm& SmZ9 SZ9am SWp9 :WSp ZpS9 SZ:p vR9 R9v& R9vH vRg9 R9v", +"1 :vR vR91H gR:v Sv9 v9S+ ZvS9 g9Sv S9lv S:v Sv9lZ y:S RUk U!Rk RDk DkRa R1", +"U 1UR8 R1D 1URa UkRM RUkM! VRk RaVk lRU R8lU VlR VlsR UkR( RU+k R(Dk +kRD R", +"(1U 1UR+ R(1D 1+RD RUkM( R+UkM RkV( R+Vk RUl( R+lU VRl( lRV+ UkRE RUk!E HkR", +"D RHUak RE1U R1U8E 1URH R1HU8 RUkME U!kRME RHVk VRHak RUlE lRU8E VRlH lsVRH", +" RUdk R+Udk DkRd RDgk 1URd R1+Ud 1DRd R1gU dkMRU R+UdkM RdVk VRgk RdlU l+RU", +"d lRVd VlgR UkR2 RUk!2 R2Dk ak2RD 1UR5 R1U58 1DR5 R1D5a RUkM2 U!kRM2 RkV2 V", +"2Rak R5lU lRU58 lRV5 lsVR5 RUk; R+Uk; DkR; ak;RD 1UR; R1>U 1DR; R1>D k;MRU ", +"R+Uk;M R;Vk V+Rk; R;lU lR>U lRV; >RVl RUkE2 U!kRE2 RHUk2 RHUak2 R1U5E 1U5R8", +"E R1HU5 1UHR5a UkMRE2 !ER2UkM V2RHk ak2VRH lRU5E R5Ul8E VlRH5 Vs5lHR dk;RU ", +"R+Udk; RH;Dk gRUk; R1dU5 >kRUd R1HU; >kgRD RdUk;M dkR;U+M VdRk; gVRk; ldRU5", +" l>RUd lH;VR V>lgR UPk U!kP DkP akUP 1UP U81P 1PRD Ua1P SUk U!Sk SVk VaSk S", +"lU lUS8 SlV SVls U(kP +kUP D(kP Dk+P 1(UP U+1P R1DP( R1+DP UkS( U+Sk VkS( S", +"kV+ SUl( lUS+ l(SV SVl+ WkUP kP!UW HkUP akPUH 1URW R1WU8 1WRD R1WUa UWSk S!", +"UWk ZkSV SZVak SUlW SlUW8 SVlZ SlVsZ dkUP dkPU+ dkDP UPgk Ud1P dkPU8 dkP1D ", +"1UgP UdSk S+UWk SkVd SVgk lUSd S8dlU SVld SlgV kmUP km!UP DkRm akmRD 1URm R", +"1mU8 1DRm akPU5 UmSk S!Ukm SkVm SVakm pUSl SlpU8 SlVp SlVsp k;UP k;PU+ k;DP", +" ak;UP U;1P 1U>P k;P1D Dk>P U;Sk S+Ukm SkV; SV+km lUS; >USl SVl; SlV> RWUkm", +" RWUkm! RHmDk RWDakm R1WU5 1UWR8m R1HUm 1UHR8m SUWkm km!SUW SZVkm ZkVSam Sl", +"pUW lWpS8U SlVZp VplSsZ UPvk vRU+k RDvk gvRDk R1vU >kvUP R1vD >kgUP SUvk Sv", +"U+k vkSV VvgSk vUSl lv>SU SlVv SlyV tR tR& tRD tcR tR1 t:R R1tD :cR tRM R&t", +"M VtR VtcR ltR :Rlt lRVt uR tR( t+R RDt( cRt+ R1t( :Rt+ tR1D( :+cR RMt( R+t", +"M VRt( tRV+ tRl( lRt+ ltVR( uR+ tRE R&tE tHR cRtH R1tE tE:R R1tH :RtH RMtE ", +"tRM&E VRtH tcVRH tRlE t:RlE lRtH uRH tdR R+td RHtd gtR R1td :Rtd tHR1d t:gR", +" RdtM t+RdM tRVd VtgR lRtd t:dlR tdVlR ugR tR2 R&t2 RDt2 c2tR t5R :Rt5 R5tD", +" cRt5 RMt2 tRM&2 tRV2 tcVR2 lRt5 t:Rl5 tRV5 uR5 t;R R+t; RDt; cRt; R1t; t>R", +" t5RD; :Rc> R;tM t+RM; tRV; tc;VR lRt; >Rlt t5VR; u>R REt2 tR&E2 RHt2 tcRH2", +" R5tE t:R5E RHt5 t:HR5 tRME2 M&EtR2 tHVR2 cRVtH2 t5RlE lt5:RE tH5lR RHu5 Rd", +"t; t+Rd; RHt; t;gR R5td >Rtd tH5Rd gRt> tdRM; dM&t;R tH;VR gtVR; t5dlR t>lR", +"d tH;lR g>uR tP tP& tPD tcP tP1 t:P 1DtP :ctP St St& StV Sct Stl S:t SVlt u", +"S tP( t+P DPt( cPt+ 1Pt( :Pt+ tP1D( t:Pc+ St( St+ S(Vt tcS+ l(St l+St SlVt(", +" uS+ tWR RWt& tHP cRtW R1tW :RtW 1HtP :HtP StW tWS& tZS tZSc lWSt tWS: lZSt", +" uZS tdP R+tW HPtd gtP 1dtP :dtP tHP1d t:gP Std t+Sd SdtZ gtS ldSt t:Sd Std", +"lZ ugS tmR Rmt& RDtm cRtm t5P :Rtm 5DtP cR:m Stm tmS& tmSV tmSc tpS tpS: Vp", +"St upS t;P R+tm D;tP c;tP 1;tP t>P t5PD; tc>P St; t+S; t;SV S;tc l;St S>t S", +"t;Vp u>S RWtm tWRm& RHtm tcWRm R5tW t:WR5 H5tP t:HRm SWtm StWm& tmSZ ScZtm ", +"tWSp S:ptW SZtp SZup tvR vRt+ vRtH gRtv vRt5 >Ptv tvR1H >Pgt tvS S+tv StVv ", +"tvgS Stlv tvS: lvVSt yuS )O !)O )BO a)O )O. 8)O )O.B a)8O )OK )O!K T)O a)TO", +" jO) 8)jO T)jO s)O *O +*O *BO a*O *O. 8*O .B*O 8Oa* *OK *O+K T*O +OT* *jO j", +"O8* jOT* s*O E)O E)!O H)O a)HO )OE. E)8O )OH. 8)HO )OEK !E)OK T)HO HTa)O E)", +"jO jO8E) H)jO H)sO d*O d*+O H*O g*O *Od. d*8O *OH. 8*gO *OdK +d*OK HOT* T*g", +"O d*jO dj*+O jOH* gOs* )O2 )O!2 )O2B )Oa2 5)O 8)5O )B5O a)5O )O2K !)2OK )OT", +"2 Ta)O2 5)jO jO58) T)5O 5)sO ;*O ;*+O ;O*B ;*aO 5*O >*O 5O*B a*>O *O;K +;*O", +"K ;*TO a;*TO jO5* *j>O 5OT* >Os* )OE2 !)2EO )OH2 Ha)O2 E)5O 58E)O 5)HO H58)", +"O EK)O2 !)OEK2 HT)O2 Ta)HO2 jO5E) 58EjO) H5T)O sH5)O ;*dO +d;*O ;*HO ;*gO d", +"*5O d*>O HO5* g*>O dK;*O dK;+*O H;T*O gT;*O dj*5O >*djO H5*jO s*Og> P) P)! ", +"P)B aP) P). 8P) .BP) 8)aP QP) P)Q! TP) Q)aP Pj) Q)8P T)Pj sP) P* +P* P*B aP", +"* P*. 8P* P.*B aP8* Q*P Q*+P TP* T*+P P*j 8PQ* PjT* sP* WP) P)W! HP) H)aP P", +")W. W)8P P)H. H)8P QPW) Q!WP) ZP) aPZ) W)Pj Pj)W8 PjZ) ZPs) W*P W*+P HP* gP", +"* W.P* 8PW* H.P* 8Pg* dPQ* +WQP* Z*P Z*gP P*Wj dPj8* P*Zj s*gP mP) P!m) P)m", +"B mPa) 5P) 5)8P P)5B 5)aP mPQ) Q!mP) mPT) amPQ) pP) 8Pp) TPp) pPs) m*P m*+P", +" *B;P m*aP 5P* >P* *B5P aP>* ;PQ* m*P+Q m*TP am*TP p*P p*>P TPp* s*>P mPW) ", +"W!mP) mPH) amPH) WP5) 5W8P) H)5P H5P8) WQmP) WmPQ!) mPZ) ZamP) WPp) pW8P) p", +"PZ) sP)Zp vP* +Pv* HPv* vPg* 5Pv* vP>* 5PH* >*gP Q*vP v+QP* vPZ* ZvPg* vPp*", +" >Ppv* ZPp* y*P ,O ,&O ,OB ,aO ,O. ,8O .B,O 8a,O ,OK &O,K ,TO ,OT& ,jO ,O&j", +" jO,T s,O ,*O -O ,O*B -aO *O,. -8O *B,O. 8a-O *O,K -OK ,OT* -TO ,O*j -jO *j", +"O,T s-O ,EO &E,O ,HO ,OH& EO,. 8E,O HO,. ,OH8 EK,O ,&EOK HT,O ,HTaO jO,E &j", +"E,O ,OHj ,HsO ,dO -dO ,OH* g-O dO,. 8d-O ,HdO. -8gO dK,O dK-O ,OTd gO-T ,Od", +"j dj-O ,HjdO gOs- ,O2 &O,2 2B,O aO,2 ,5O ,O5& 5B,O ,O5a 2K,O ,&O2K TO,2 ,Ta", +"O2 jO,5 &jO,5 ,O5T ,5sO ,;O -;O ;O,B a;-O ,O5* ->O ,5;OB -a>O ;O,K ;O-K ,OT", +"; T;-O ,O;j >O-j ,5T;O >Os- EO,2 ,&EO2 HO,2 ,HaO2 5E,O ,58EO ,OH5 ,H58O ,EO", +"2K &EO,2K ,HTO2 H&O,T2 ,5jEO ,5E&jO ,H5jO s,H5O d;,O d;-O ,OH; -;gO ,O5d -d", +">O ,H5dO >Og- ,d;OK -d;OK ,H;TO -T;gO ,5djO ->djO ,H;jO s-g>O ,P ,P& ,PB ,a", +"P ,P. ,8P P.,B 8P,a ,QP Q&,P ,TP Qa,P ,Pj Q8,P TP,j sP, ,P* -P *B,P -Pa ,.P", +"* -P8 P*.,B 8P-a Q*,P -QP T*,P -TP P*,j -Pj P*j,T s-P ,WP W&,P ,HP HP,a WP,", +". 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T<n a<Tn <jn <j8n <jTn s<n n* +<n n*B an* n*. 8n* n.*B an8* n*K +Kn* Tn* ", +"T<+n n*j <j+n njT* sn* <nE <En! H<n a<Hn nE<. <n8E <nH. 8<Hn nE<K n!<EK T<H", +"n H<Tan <Enj <jn8E <jHn H<sn <dn <d+n Hn* g<n <.dn <d8n H.n* 8<gn dKn* <dn+", +"K TnH* T<gn dn<j <dj+n n*Hj s<gn 4<n n!4< <n4B 4<an 5<n 8<5n <n5B a<5n <n4K", +" 4<n!K 4<Tn 4Ta<n <j5n <jn48 T<5n 5<sn =n =+n =Bn =an =5n >n= 5n=B =a>n =nK", +" +n=K =Tn +T=n =jn =j>n 5T=n s=n <n4E 4<n!E 4<Hn 4Ha<n <n5E 48<nE 5<Hn 4H8<", +"n 4<nEK n!<4EK 4HT<n H<T4an <jn4E 48<njE 4Hj<n s<H5n =dn +n=d =Hn g=n 5d=n ", +"=d>n H5=n >ng= dn=K =+dnK Hn=T gn=T dn=j >n=dj Hn=j gns= <P <P! <PB a<P <P.", +" 8<P P.<B a<8P Q<P Q!<P T<P a<Qn <Pj 8<Qn <jTP s<P <P* +<P *B<P a<+P <.P* 8", +"<+P <P*.B aP*8< Qn* Q<+P TnQ* T<+P P*<j 8nQ* <PjT* +<sP W<P W!<P H<P a<HP W", +".<P 8<Wn H.<P 8<HP Q<Wn <P!WQ Z<P a<Zn <PWj <PjW8 <PZj Z<sP Wn* W<+P WnH* g", +"<P W.n* 8nW* H<Pd. 8<gP QnW* +W<Qn Zn* Z<gP dP<j <dj+P n*Zj s<gP o< o!< o<B", +" oa< o5< o8< 5<oB 5ao< oQ< Q<o! oT< Qao< op< p<o8 p<oT os< o= o=+ o=B =ao o", +"=5 o>= o5=B =ao> =Qo o+=Q =To o+=T p=o p=o> op=T s=o oW< W<o! oH< H<oa 5Wo<", +" W8o< H5o< H8o< W<oQ o!WQ< oZ< oaZ< oWp< opW8< opZ< s<oZ ov= v=o+ =Ho go= =", +"5ov v>o= =5oH o>g= ov=Q ov=+Q Z=o Z=go ovp= o>pv= p=oZ yo= ,n ,n& ,nB ,an ,", +"n. ,8n n.,B 8n,a ,nK ,K&n ,Tn T&,n ,nj 8n,j Tn,j sn, ,n* -n *B,n -na ,.n* -", +"n8 n*.,B 8n-a ,Kn* -nK T*,n -Tn n*,j -nj n*j,T s-n ,nE ,E&n ,Hn H&,n nE,. ,", +"E8n ,.Hn H8,n nE,K <&EnK Hn,T ,HnT& ,Enj <&jnE Hn,j ,Hsn ,dn -nd Hn,d g-n ,", +".dn 8d-n ,Hnd. g8-n ,Kdn dn-K Td,n -Tgn dn,j dn-j dnj,H gns- ,4n 4&,n 4B,n ", +"4a,n ,5n 48,n ,B5n 5a,n 4n,K <&K4n 4T,n ,4Tan 4j,n <&j5n 5T,n ,4sn =n, -=n ", +",n=B -n=a ,5=n >n- =B5,n -a>n ,n=K =K-n ,T=n -n=T ,n=j -n=j =T5,n >ns- 4n,E", +" <&E4n 4H,n ,4Han ,E5n ,48nE H5,n ,4H8n ,4nEK ,4E&nK ,4HTn 4H&,Tn ,4jnE <jE", +"5&n ,4Hnj sn,4H ,d=n =d-n ,H=n -=gn 5d,n -d>n =H5,n g->n =dn,K -=dnK =HT,n ", +"g=-Tn =jd,n >n-dj =Hj,n s-ng= ,P< <P& ,B<P a<,P ,.<P 8<,P <P.,B <P&8a ,Qn Q", +"&,n Qn,T Qa,n Qn,j Q8,n <Pj,T ,Qsn P*,n -P< <P*,B a<-P <P*,. 8<-P ,P.n*B -P", +"8a< Q*,n -Qn ,QnT* Qa-n <Pj,* Q8-n ,TPn*j -Qsn ,Wn W&,n H<,P Wa,n ,.Wn W8,n", +" ,HP<. <P&H8 Wn,Q <P&WQ Zn, ,aZn Wn,j <P&Wj ,nZj Zns, Wn,d -Wn ,HP<d -Wgn ,", +"Wnd. W8-n <d.,HP -Wng8 Qd,n Wn-Q ,dZn Z-n <dj,P Wn-j Zn*,j snZ- o, o&< o,B ", +"oa, o,5 o8, ,5oB ,5oa o,Q ,Qo& oT, ,Qoa op, p<o& p,oT os, o=, o- =Bo, o-a =", +"5o, o-> o=5,B ->oa o,=Q o-Q o,=T o-T o,p= o-p p=o,T os- o,W ,Wo& oH, ,Hoa ,", +"5oW ,Wo8 ,Ho5 ,Ho8 ,WoQ o&W,Q oZ, oaZ, oWp, op&,W opZ, s,oZ ov, o-v o,=H go", +"- o5v, -vo> ov,H5 g-o> oQv, -Qov ovZ, Z-o pvo, op-v oZ,p= yo- <nC <Cn! D<n ", +"a<Dn nC<. <n8C <nD. 8<Dn nC<K n!<CK T<Dn D<aTn <Cnj <jn8C <jDn D<sn n*C +Cn", +"* Dn* D<+n *Cn. 8Cn* D.n* 8nD* *CnK n*C+K TnD* an*DT nC*j n*j+C n*Dj Dns* n", +"C<E n!<CE D<Hn H<Dan <nCE. 8<nCE H<Dn. H8<Dn <nCEK <CEn!K H<DTn D<aHnT <jnC", +"E 8<CnjE H<jDn s<HDn <Cdn <dn+C DnH* D<gn <dnC. 8<dnC Hn*D. g<D8n <dnCK +<C", +"dnK Hn*DT g<TDn <djnC <dC+nj <djDn sn*gD <n4C 4<n!C 4<Dn 4Da<n <n5C 48<nC D", +"<5n 4D8<n 4<nCK n!<4CK 4DT<n D<a4Tn <jn4C 48<njC 4Dj<n s<D5n =nC +n=C =Dn +", +"D=n 5n=C =n>C 5D=n =D>n nC=K =+nCK Dn=T =D+Tn nj=C >n=jC Dn=j sn=D 4<nCE n!", +"<4CE 4HD<n H<D4an 5<nCE 8<C5nE H5<Dn 5D<H8n <nC4EK EK<!4nC H<D4Tn a<Hn4DT 5", +"<CnjE <j5n8CE 5D<Hnj H5<snD dn=C =+dnC Hn=D gn=D =5dnC >n=dC =H5Dn g=>Dn =d", +"nCK dnC=+K =HDTn g=DTn =jdnC =jd>nC =HjDn s=gDn <PC <!PC D<P a<DP PC<. 8C<P", +" D.<P 8<DP QC<P <PCQ! D<Qn QD<aP <CPj <Pj8C <PDj D<sP <CP* +C<P <PD* D<+P <", +"P*C. +<P8C D<P*. +D<8P QCn* +Q<PC DnQ* an*QD <Pj*C <Pj+C <PjD* s<P+D WC<P <", +"PCW! D<HP H<PDa <PCW. W8<PC H<PD. H8<DP <PCWQ Q<CWn! D<Zn Z<DaP <PjWC <jCW8", +"n Z<DPj s<PZD WCn* +W<PC DnW* D<gP Wn*C. W8n*C WDn*. g<PD8 Wn*QC <dC+Qn DnZ", +"* Zn*gD <djPC <dC+Pj Zn*Dj s<PgD o<C <Co! oD< D<oa 5<oC 8<oC 5Do< D8o< Q<oC", +" o!Q<C QDo< oDQa< oCp< op8<C p<oD oDs< o=C =Co+ =Do o+=D o5=C >Co= =5oD =Do", +"> oQ=C o=+QC oD=Q o+D=Q =Cop o>p=C op=D =Dos W<oC o!W<C H<oD oHDa< o5W<C o8", +"W<C oH5D< oH8D< oWQ<C W<Qo!C oDZ< oZDa< opW<C p<Wo8C Zp<oD osZD< =Cov ov=+C", +" ov=D =Dgo ov=5C o>v=C ovD=5 go>=D ov=QC =Qvo+C =DoZ goZ=D p=ovC p=vo>C p=D", +"oZ =Dyo ,nb <&bn ,Dn c<n ,.bn b8,n ,.Dn ,8cn ,Kbn <&Kbn bT,n ,Tcn bn,j <&jb", +"n Dn,j c<sn bn* -nb Dnb* c-n b.n* b8-n ,Dn*. c8-n bKn* bn-K Tnb* -Tcn n*bj ", +"bn-j n*j,D c-sn ,Ebn <&Ebn bH,n ,Hcn ,nbE. ,8nbE ,Hnb. c<H8n ,nbEK b<E&nK ,", +"HnbT c<HTn ,njbE <&Ebnj ,Hnbj sn,cH bd,n bd-n Hnb* c-gn ,dnb. -nb8d ,Ddn. c", +"-ng8 ,dnbK -nbdK ,DdTn c-ngT <djbn -njbd dnj,D s-ngc 4b,n ,4b&n 4D,n ,4cn b", +"5,n ,48bn 5D,n ,5cn ,4bnK ,4b&nK ,4DTn c4T,n ,4jbn 4b8,nj ,4Dnj sn,c4 =bn -", +"n=b ,D=n c=n b5=n =b>n =b5Dn >nc= bn=K =b-nK bT=n cn=T bn=j >n-bj =bT5n snc", +"= ,4bnE ,4b&nE ,4Hbn c4H,n ,5nbE <&Eb5n ,H5bn c5<Hn 4bE,nK <&bn4EK 4bH,Tn ,", +"4HcnT <jEb5n &n4jb<E 4bH,nj s<Hc5n bd=n =b-dn bH=n gnc= =b5dn >n-bd =bH5n c", +"=g>n =bdnK -nd=bK =bHTn c=gTn =bjdn >nd=bj =bHnj s=cgn b<P <&bP D<,P c<P b.", +"<P 8<bP ,DP<. 8<cP bQ,n <P&bQ QD,n ,Qcn <Pbj <P&bj <Pj,D c<sP <Pb* b<-P ,DP", +"n* -Pc< b<P*. -Pb8< P*.,Dn c-P8< Qnb* bQ-n ,QDn* -Qcn <Pjb* -Qnb8 ,QDn*j s-", +"Pc< bW,n <P&bW H<bP ,Wcn ,Wnb. ,W8bn ,WDn. cW<8P ,WnbQ W<&bQn ,DZn c<Zn <Pj", +"bW bW8<Pj Zb<Pj Zc<sP Wnb* bW-n ,WDdn c<gP bWn*. -Wnb8 <d.,DP c-W8n ,Qdbn -", +"WnbQ bnZ* c-Zn <djbP -Wnbj Zbn*j Z-nsc ob< b<o& oD, oc< ,5ob ,8ob ,5oD o8c<", +" ,Qob obQ<& ,QoD oTc< pbo, opb,8 pDo, s<oc =bo o-b ob=D oc- =5ob =bo> =bo5D", +" c>o- ob=Q -Qob ob=T =Qoc op=b ob-p p=boD ocs= ,Wob obW<& ,Hob oHc< ob5,W o", +"b8,W obH,5 ocH,5 obW,Q bW<o&Q obZ< Z<oc opb,W obWp<& oZbp< oscZ< ov=b ob-v ", +"ob=H c=go ovb=5 o-v>b ovD,5 cv=o> ovb=Q o-vbQ =boZ ocZ- p=bov o-pvb Z=bop o", +"cy- 6<n n!6< <n6B 6<an 1<n 8<1n <n1B a<1n <n6K 6!<nK 6<Tn 6Ta<n <j1n <jn68 ", +"T<1n 1<sn 6*n +n6* 6n*B an6* 1n* +<1n *B1n an1* 6Kn* n*K6+ Tn6* an*6T n*6j ", +"n*j6+ Tn1* 6*sn <n6E 6!<nE 6<Hn 6Ha<n <n1E 68<nE H<1n 6H8<n 6<nEK n!<6EK 6H", +"T<n H<T6an <jn6E 68<njE 6Hj<n s<H1n dn6* <dn6+ Hn6* 6*gn <d1n 68dn* Hn1* 1<", +"gn <dn6K 6+<dnK 6H*Tn g6Tn* <dj1n 68dn*j n*j6H sn*g6 6<4n 6!4<n 46<nB 4a6<n", +" 7<n 8<7n <n7B a<7n 46<nK 4<n6!K 4T6<n 6T<4an <j7n 78<nj T<7n 7<sn =6n 6+=n", +" 6n=B 6a=n 7=n 7=>n =n7B =n7a 6n=K =6+nK 6T=n =T6+n 7n=j 7>=nj =n7T 7=sn 46", +"<nE 4<n6!E 4H6<n 6H<4an <n7E 78<nE H<7n 7H8<n 6<n4EK 4<6!nEK 6H<4Tn a<Hn4T6", +" 7<njE <jn78E 7HT<n 7sH<n 6d=n =6+dn 6H=n =6gn =n7d 7>=dn =n7H 7=gn =6dnK d", +"nK=6+ =H6Tn g=6Tn 7=dnj >n=7dj 7Td=n g7s=n 6P< 6!<P 6B<P a<6P 1<P 8<6P 1B<P", +" a<1P Q<6P <P!6Q T<6P 6Qa<P Q<1P <Pj68 T<1P 6Ps< 6P* +<6P *B6P aP6* 1P6* +<", +"1P 6P*1B aP*68 Qn6* 6+Q<P TP6* aP*6Q Qn1* <Pj6+ P*j6T 6Ps* W<6P <P!6W H<6P ", +"6HPa< W<1P 6W8<P H<1P 6H8<P 6WQ<P 6WQ<P! 6PZ< Z6a<P <Pj6W 6W8<Pj 1<Zn s<PZ6", +" Wn6* 6+W<P HP6* 6Pg< Wn1* 6W8P* 6HP1* 1<gP 6W*Qn +Wn6Q* 6PZ* Z6*gP <dj6P 6", +"+W<Pj 1nZ* s<Pg6 o6< 6!o< 6<oB 6ao< 7o< 7<o8 o<7B 7<oa 6Qo< o!6Q< 6To< oT6a", +"< p<7o 7op8< 7<oT 7os< o=6 =6o+ o6=B =6oa 7o= 7=o> =B7o 7o=a o6=Q o=6+Q =6o", +"T o+T=6 7op= 7o=p> 7o=T 7os= 6Wo< o!6W< 6Ho< oH6a< oW7< 7oW8< 7<oH 7oH8< o6", +"WQ< 6WQo!< o6Z< oZ6a< 7opW< op87W< Z<7o osZ7< v6o= ov=6+ =6oH o=g6 ov7= 7o=", +"v> 7o=H 7og= ov=6Q =Qvo+6 o=Z6 goZ=6 7o=pv o>p7v= 7oZ= 7oy= ?n ?&n ?Bn ?an ", +"?1n ?:n 1n?B :n?a ?nK &n?K ?Tn T&?n ?jn :n?j 1T?n s?n ?n* ?-n n*?B -n?a 1n?", +"* :-n ?B1n* :a-n n*?K ?K-n Tn?* -n?T n*?j -n?j ?T1n* ?-sn ?nE &n?E ?Hn H&?n", +" 1n?E ?E:n 1H?n :n?H nE?K ?&nEK Hn?T ?HTan nj?E ?:njE Hn?j ?Hsn ?dn -n?d Hn", +"?d g?n 1d?n :n?d ?H1dn ?:gn dn?K ?-dnK Td?n ?Tgn dn?j ?:dnj ?Hjdn gns? ?4n ", +"4&?n 4n?B 4a?n 7?n :n7? ?n7B ?n7a 4n?K ?4&nK 4T?n ?T4an 7n?j ?:7nj ?n7T 7?s", +"n ?=n -n?= ?B=n =n?a =n7? An ?=7nB Aan ?n=K ?-=nK =n?T ?-T=n =n?j Ajn ?T7=n", +" Asn 4n?E ?4&nE 4H?n ?H4an 7n?E ?:7nE ?n7H ?:H7n ?4nEK &nE?4K ?H4Tn 4H&?Tn ", +"?j7nE 7:n?jE ?H7Tn s?7Hn =n?d ?-=dn =n?H ?=gn ?n7d Adn ?H7=n Agn ?=dnK -=n?", +"dK ?Td=n g?=Tn ?d7nj dnAj ?Hj=n gsAn ?P ?P& ?PB ?aP ?P1 ?:P 1P?B :P?a ?QP Q", +"&?P ?TP Qa?P ?Pj :Q?P 1T?P s?P ?P* ?-P P*?B -P?a 1P?* :-?P ?P1*B ?:P-a Qn?*", +" -Q?P TP?* -T?P P*?j -Q:n ?TP1* ?-sP ?WP W&?P ?HP HP?a 1W?P :W?P 1H?P :H?P ", +"Wn?Q ?WQP& ?ZP Z&?P Wn?j ?:WQn Z1?P sP?Z ?dP -W?P HP?d g?P 1d?P :d?P ?HP1d ", +"?:gP Qd?P ?-WQn Zn?d gP?Z dP?j ?:QdP ?Z1dP gPs? o? o?& o?B o?a o?7 o:? 7Bo?", +" ?ao: o?Q o&?Q o?T oT?a ?po o:?p 7o?T s?o o?= o-? =Bo? =ao? 7o?= Ao 7o=?B A", +"oa =Qo? ?Qo- =To? ?To- p=o? Aop o?Tp= Aos o?W o&?W o?H oH?a 7o?W ?Wo: 7o?H ", +"?Ho: oW?Q o?WQ& ?Zo ?aoZ op?W o:?pW o?7Z os?Z ?vo o-?v =Ho? go? o?7v Aov o?", +"H7v Aog ov?Q o-?vQ o?Z= ?Zgo op?v opAv ?Zo7v yAo <n6C 6!<nC 6<Dn 6Da<n <n1C", +" 68<nC D<1n 6D8<n 6<nCK n!<6CK 6DT<n D<a6Tn <jn6C 68<njC 6Dj<n s<D1n 6Cn* n", +"*C6+ Dn6* an*6D 1Cn* 68*nC Dn1* an*1D n*C6K 6+Cn*K 6D*Tn +Dn6T* n*j6C <jC1+", +"n n*j6D sn*6D 6<nCE n!<6CE 6HD<n H<D6an 1<nCE 8<C1nE 1H<Dn H8<1Dn <nC6EK EK", +"<!6nC H<D6Tn a<Hn6DT 1<CnjE <j1n8CE H<j1Dn 1H<snD <dn6C 6+<dnC 6H*Dn g6Dn* ", +"1<dnC <dC1+n 1HnD* g1<Dn 6dCn*K <d+n6CK Ddn6T* 6D*gnT <jC1dn <d6j+nC 6Ddn*j", +" s<Dg1n 46<nC 4<n6!C 4D6<n 6D<4an <n7C 78<nC D<7n 7D8<n 6<n4CK 4<6!nCK 6D<4", +"Tn a<Dn4T6 7<njC <jn78C 7DT<n 7sD<n 6n=C =6+nC 6D=n =D6+n 7n=C 7>=nC =n7D 7", +">D=n =6nCK 6+n=CK =D6Tn 6+D=Tn 7=njC >nj7=C =D7Tn s=7Dn 6<n4CE 4<6!nCE 6H<4", +"Dn a<Hn4D6 7<nCE 8<n7CE 7HD<n H8<7Dn 6<4nEKC 6n4CEK<! T<Hn4D6 46T<HDan <jn7", +"CE <j7n8CE H<j7Dn 7HDs<n =6dnC dnC=6+ =H6Dn g=6Dn 7=dnC >n=7dC 7Dd=n g7=Dn ", +"dnC=6K dn=C6+K 6Dd=Tn g6D=Tn =jn7dC >j7d=nC 7Hn=Dj s=Dg7n 6C<P <PC6! D<6P 6", +"DPa< 1C<P 68P<C D<1P 6D8<P <PC6Q 6QC<P! 6QD<P QD<6aP <Pj6C <PC6Q8 <Pj6D s<P", +"6D 6CP* 6+P<C DP6* aP*6D 6P*1C 68P*C 6DP1* 6D8P* 6Q*PC <PC6+Q 6QDP* 6QDaP* ", +"P*j6C <PC6+j P*j6D sP*6D <PC6W 6WC<P! 6HPD< WD<6aP 1W<PC <PC6W8 1H<DP H8<6D", +"P 6WQ<PC QC<P6W! Z6D<P 6DPZ<a <PC6Wj <PWj68C Z1<DP s<DZ1n 6W*PC <dC6+P 6HPD", +"* g6PD< 1Wn*C <dC68P 1WDn* g1<DP <PC6Qd 6C+WQn* Z6*DP Z6Dg<P <dC6Pj dP<j6+C", +" Z1nD* s<Dg6P 6<oC o!6<C 6Do< oD6a< o<7C 7o8<C 7<oD 7oD8< o6Q<C 6Q<o!C oD6Q", +"< 6QDoa< 7op<C o8<7pC 7oDp< os7D< o6=C o=6+C =6oD o+D=6 =C7o 7o=>C 7o=D o>D", +"7= o=6QC =Q6o+C =QDo6 o+6=QD 7o=pC p=7o>C p=D7o s=o7D o6W<C 6W<o!C oH6D< 6W", +"Doa< 7oW<C o8<7WC 7oHD< 7H<oD8 6WQo<C Q!oW6<C oZ6D< oD6Z<a op<7WC 78p<oWC 7", +"ZoD< 7ZDos< ov=6C v=6o+C ovD=6 go=6D 7o=vC o>=7vC 7vDo= go7=D =Q6ovC =6o+vQ", +"C Z=o6D Z=6goD p=o7vC >C7vp=o 7Z=oD yo7=D ?bn bn?& ?Dn ?cn b1?n ?b:n 1D?n :", +"n?c bn?K ?b&nK bT?n cn?T bn?j ?:bnj Dn?j sn?c bn?* ?b-n Dn?* cn?- 1nb* :b-n", +" ?D1n* c-:n ?bn*K ?-bnK ?DTn* ?-Tcn ?jbn* ?-jbn ?Djn* s-n?c bn?E ?b&nE bH?n", +" cn?H ?b1nE ?:bnE ?Hb1n ?:Hcn ?bnEK &nE?bK ?HbTn ?cHTn ?jbnE :nb?jE ?Hjbn s", +"?cHn bd?n ?-bdn Dd?n gn?c ?d1bn ?:dbn ?Dd1n g:n?c ?dbnK -nb?dK ?DdTn g?cTn ", +"?djbn ?db-nj ?Ddnj g?scn 4b?n ?4b&n 4D?n ?4cn ?n7b ?:7bn ?n7D cn7? ?4bnK &n", +"K?4b ?D4Tn ?c4Tn ?j7bn 7:b?jn ?D7Tn s?7cn ?b=n ?-=bn =n?D cn?= =n7b Abn ?D7", +"=n Acn ?=nbK =bn?-K =bT?n c=?Tn =b7nj bnAj ?Dj=n scAn ?4bnE &nE?4b ?H4bn ?c", +"4Hn 7?bnE 7bn?:E ?H7bn 7c?Hn 4bn?EK &n?E4bK 4bH?Tn c4H?Tn 7bn?jE 7j?E:nb ?H", +"n7bT 7cHs?n ?=dbn =b-?dn ?Dd=n c=?gn ?d7bn bdAn ?D7dn gcAn =bn?dK =d-n?bK ?", +"Hn=bT g?Tc=n ?dn=bj Adnbj ?Hn=bj Agnsc ?Pb bP?& ?DP ?cP b1?P ?b:P 1D?P :c?P", +" bQ?P ?QbP& bT?P cQ?P bP?j ?:QbP DP?j sP?c bP?* ?b-P DP?* c-?P ?Pb1* ?:P-b ", +"?DP1* ?cP:- ?QbP* ?-QbP ?QDP* ?cQ-P ?Pjb* ?-Pbj ?DP*j s?Pc- bW?P ?WbP& bH?P", +" cW?P ?Wb1P ?:WbP ?HPb1 ?cW:P ?WbQn bWn?Q& Zb?P ?PZc ?WjbP ?Wb:Qn ?Zb1P s?Z", +"cP bd?P ?-WbP Dd?P gP?c ?dPb1 ?:dbP ?Dd1P g?P:c ?QdbP ?Wb-Qn ?ZbdP g?ZcP ?d", +"Pbj ?Wb-Pj ?DdPj g?scP o?b ?bo& o?D oc? 7bo? ob?: 7o?D ?co: ob?Q o?bQ& ob?T", +" ?Qoc ob?p o:?pb op?D ocs? =bo? ob?- =Do? ?co- 7o=b Aob o?D7= Aoc o?=bQ o-?", +"bQ o?D=Q oc?=Q p=bo? opAb ?pDo= osAc ob?W o?bW& ob?H ?Hoc ?W7ob o:?bW o?H7b", +" o:H?c o?bWQ obW?Q& ?DoZ oc?Z ?pobW ?pbo:W ?Zo7b s?oZc ob?v o-?vb ov?D ocg?", +" 7vbo? ovAb ?vD7o goAc ?vobQ ?vbo-Q ?Zo=b go?Zc ?pvob Aopvb ?pvoD yoAc R< R", +"<! R<B Ra< R<. R8< <.RB 8<Ra R<M R!<M RT< T<Ra R<j 8<Rj T<Rj sR< R<* R+< *B", +"R< +<Ra R.n* +<R8 n*.RB an*R8 Mn* +MR< T<R* +TR< <jR* +<Rj Mn*Tj R+s< R<E <", +"ER! RH< H<Ra <ER. RE8< R.H< H8R< RE<M <MER! H<RT aMnH< RE<j R8<ME H<Rj RHs<", +" R<d +<Rd H<Rd gR< R.<d 8<Rd RH<d. R8g< <MRd <dMR+ T<Rd RTg< <dRj <dMR8 <dj", +"RH sRg< R4< 4!R< 4<RB 4aR< R5< 48R< RB5< 5aR< 4MR< <M!R4 4TR< aMn4< 4jR< R4", +"8<M 5TR< R4s< =R =R+ =RB =Ra =R5 =R> R5=B >R=a =RM R+=M =RT R+=T =Rj =R>M R", +"5=T s=R 4<RE R4<!E 4HR< R4Ha< RE5< R48<E H5R< R4H8< <MER4 R4E<M! R4HT< 4HMR", +"a< R4j<E <MER48 R4H<j sR4H< =Rd R+=d =RH g=R R5=d =d>R RH=5 g>=R Rd=M =R+dM", +" RH=T gR=T Rd=j >M=Rd RH=j gs=R R<P R!<P RB<P aPR< R.<P 8PR< <P.RB R8<aP S<", +" S<! S<T Sa< S<j S8< T<Sj Ss< <PR* +PR< <P*RB aP*R< <P*R. R+<8P R<.P*B R8<a", +"P* S<* S+< T<S* +TS< <jS* +<S8 S<T*j S+s< RW< R!W< H<RW WaR< R.W< W8R< RH<W", +". RH8W< S<W W<S! SZ< Z<Sa W<Sj W8S< SjZ< s<SZ W<Rd +WR< RH<W* RWg< RW<d. R+", +"W8< <P.RH* gR<W8 S<d +WS< Z<Sd gS< <dSj 8<Sd SZ<dj g<Ss oR< R<o! R<oB Rao< ", +"R5o< R8o< oR5<B o8Ra< So< o!S< oTS< oaS< Sp< o8S< STp< s<So =Ro o+=R oR=B o", +"a=R oR=5 =Ro> o=5RB o>=Ra S= S=+ S=T S=a S=p S>= Sp=T s=S RWo< o!RW< RHo< o", +"HRa< 5WR< o8RW< oHR5< oH8R< oWS< S<Wo! S<oZ SZ<oa SWp< Sp<W8 ZpS< osZS< =Rv", +" =+vR oH=R =Rgo =5vR v>=R =RvH5 g=Ro> S=v v=S+ S=Z gS= p=Sv v>S= SZp= y=S ,", +"R< R<& RB,n Ra,n ,.R< R8,n ,R<.B ,R8a< ,Mn <MR& RT,n T<R& R<,j 8M,n ,RT<j ,", +"Rs< R*,n -R< n*B,R Ra-n n*.,R R8-n ,R.n*B -R8a< M*,n -Mn Mn*,T RT-n Mn*,j R", +"<-j ,RTn*j -Rs< ,ER< RE<& RH,n H<R& ,R<E. ,R8<E ,RH<. ,RH8< ,EMn <M&RE HM,n", +" aMn,H ,Rj<E <&jRE ,RH<j sn,RH R<,d R<-d ,RH<d -Rg< ,Rd<. -R8<d <d.,RH g-R8", +"< dM,n dM-n dMn,H -Mgn <dj,R -Rj<d ,RH<dj s-Rg< ,R4 R&,4 RB,4 R4,a R4,5 R4,", +"8 ,R45B ,R45a R4,M <M&R4 R4,T aMn,4 R4,j <M&R5 ,R45T ,Rs4 =R, =R- ,R=B -R=a", +" ,R=5 ->=R =R5,B >n-Ra ,R=M -R=M ,R=T -R=T ,R=j -R=j =RT,5 =Rs- ,ER4 ,R4&E ", +"R4,H ,R4H& ,R45E ,R48E ,R4H5 ,R4H8 ,R4ME <MER4& ,R4HM ,4HaMn ,R4jE <MER5& ,", +"R4Hj sR4,H ,R=d =d-R ,R=H g-=R =R5,d >n-Rd =RH,5 g=R-> =Rd,M =R-dM =RH,T g=", +"R-T =Rj,d >M-dn =RH,j s=Rg- R<,P <PR& <PB,R <P&Ra <P.,R <P&R8 ,R.<PB R8<,aP", +" S<, S<& ,TS< ,aS< ,nSj ,8S< S<T,j S<s, <P*,R R<-P ,R<P*B -Ra<P ,R<P*. -R8<", +"P <PR*,.B R8<-Pa ,nS* S-< S<T,* -TS< S<*,j -nS8 n*jS,T s<S- RW,n W<R& ,RHW<", +" <P&RH ,RW<. ,RW8< <P.,RH RH8<P& ,WS< W<S& Z<S, Z<S& S<W,j S8<,W SZ<,j Ss<Z", +"& ,RW<d RW-n RH<,dP -RWg< <d.,RW -RW8< ,.RHWn* -R8g<P ,dS< -WS< SZ<,d g<S- ", +"S<d,j S-W8< SdjZn, gS-s< o,R ,Ro& ,RoB ,Roa ,Ro5 ,Ro8 o,R5B o8,Ra So, o&S< ", +"oTS, oaS, opS, o8S, Sp<,T s,So o,=R o-R o=,RB -Roa o=5,R -Ro> o,5=RB o->Ra ", +"S=, S-o S,=T =TS- S,p= o-S> S=p,T S-s= ,RoW o&R,W ,RoH oH&,R o,R5W o8,RW oH", +",R5 oH8,R SWo, S<&oW S,oZ oZ&S< Sp<,W Sp<W& oZ,Sp os,SZ vRo, =R-v ov,RH gRo", +"- ov,R5 o-v>R =R5oH, go->R ovS, Svo- S,Z= S-go Sv,p= o-pSv S=Zp, S-yo R<U R", +"!U< RD< UaR< R.U< U8R< R.D< D8R< <MUn <M!Un V<R RaV< U<Rj R8<Uj R<Vj V<sR U", +"n* U+R< D<R* +DR< U.n* 8nU* RD<*. an*U8 MnU* Mn*U+ Vn* R+V< n*Uj Mn*U8 n*Vj", +" Vns* REU< R<U!E UHR< RH<Ua R<UE. R8<UE RH<U. RH8U< <MEUn U<EMn! RHV< V<RHa", +" R<jUE <MEU8n V<RHj s<VRH U<Rd R+<Ud HnU* RDg< R<dU. R8<Ud RD<d. gR<U8 <dMU", +"n U+<dMn R<Vd V<gR <djUn U+<dnj V<dRj gV<sR 4UR< R4U<! 4DR< R4Da< U5R< R48U", +"< 5DR< R4D8< R4U<M R4U<M! R4V< V4Ra< R4jU< 4U8R<j R5V< s<VR4 =RU R+=U =RD R", +"+=D R5=U =U>n R5=D >R=D Un=M =RU+M V=R V+=R Rj=U >M=Un V5=R >nV= R4U<E 4UER", +"<! R4HU< 4UHRa< R5<UE R4EU8< RH5U< 4UHR8< R4U<ME <MUn4E! V4RH< R4HV<a <MEU5", +"n RE48U<j V5<RH s<HV5n Rd=U =RU+d RH=U gR=U =RU5d >nU=d =RHU5 g=R>U =RUdM d", +"Mn=U+ Vd=R =RgV =RjUd >nd=Uj V=RH5 V>ng= U<P U!<P D<UP a<UP U.<P 8<UP RD<P.", +" RD8<P S<U U<S! SV< V<Sa U<Sj U8S< SjV< SVs< <PU* +<UP RD<P* aP*U< U<P*. U+", +"<8P <P.RD* U8<aP* U<S* U+S< V<S* V+S< S<U*j S+<U8 SV<*j Ss<V+ UWR< RW<U! H<", +"UP RWDa< RW<U. RW8U< RWD<. RWD8< UWS< S<UW! Z<SV SZ<Va S<UWj S8<UW SZ<Vj Ss", +"<VZ WnU* R+WU< RWD<d U<gP UWn*. UW8n* <d.RWD gU<8P U<Sd S+<UW V<Sd SVg< S<d", +"Uj S8<Ud SV<dj gS<Vs oU< U<o! RDo< Uao< U5o< U8o< oU5D< oU8D< oUS< S<Uo! oV", +"< V<oa pUS< Sp<U8 S<Vp s<oV =Uo o+=U oU=D oU=a =5oU =Uo> =RDo5 o>U=D S=U S+", +"=U S=V =aoV Sp=U =US> VpS= oVs= UWo< oUW<! UHo< oUHa< oU5W< oU8W< oUH5< oUH", +"8< S<UoW oUWS<! Z<oV oVZa< Sp<UW S8WpU< oVZp< oVsZ< ov=U ovU=+ oU=H =Ugo ov", +"U=5 o>Uv= =Rv5D goU>= =USv S=vU+ oVZ= V=go p=USv S>=vU oVvp= S=yV ,Un b<R& ", +"RD,n cR< ,.Un b8R< ,RD<. R8c< bM,n <M&Rb Vn, V<cR b<Rj <&jRb ,nVj cRs< b<R*", +" -Un ,RDn* -Rc< ,Un*. U8-n n*.,RD c-R8< Mnb* bM-n ,nV* V-n Mn*bj Un-j Vn*,j", +" snV- ,EUn ,Un&E bHR< RHc< ,UnE. ,U8nE ,UHn. cR<H8 ,UnME <MEU&n ,HVn cR<VH ", +",UnjE <MERb8 Vn,Hj snV,H b<Rd Ud-n ,RD<d cRg< ,Udn. -Un8d <d.,RD cR<g8 <dMR", +"b -UndM ,dVn gnV- <djRb -Undj Vdn,j V-ngs R4,U ,R4U& R4,D ,Rc4 b5R< ,R4b8 ,", +"R45D R5c< ,R4bM ,4UM&n ,RV4 cR4V< ,R4bj ,4U&nj ,5Vn snV,4 =Rb -R=b ,R=D c=R", +" Rb=5 -U>n =Rb5D =Rc> Rb=M =R-bM Vn=b =RV- Rb=j >M-bn V=R,5 >nV- ,R4bE <&ER", +"4b ,R4bH cR4,H ,U5nE <&ERb5 ,UH5n cR5H< <MER4b <MR&4bE V4,RH cRHV4, <MERb5 ", +"R4,jb8E V5n,H s<HcR4 Rb=d =R-bd Rb=H gc=R =Rb5d >n-Ud =RbH5 c=Rg> =RbdM =bd", +"-Mn V=R,H c=VgR =Rbdj >Md=Rb =RbHj c=Rgs bPR< <PU& ,RD<P R<cP ,UP<. <P&U8 <", +"P.,RD cR<8P Sb< b<S& V<Sb Sc< b<Sj b8S< SV<,j s<Sc ,UPn* U<-P b<PRD* c-R<P ", +"<P.Rb* -UP8< <Pb*RD. c<8-UP b<S* -US< SV<b* S<V- Sb<*j S-b8< SbjVn* V-nSs b", +"WR< <P&UW ,RWD< RWc< ,UWn. ,UW8n <P.,UH cRW8< bWS< Sb<W& ZbS< S<Zc Sb<Wj Sb", +"8W< SZb<j Sc<sZ ,UWdn UW-n RWD,dn c-RW< <d.,UP -UW8n RW,D<d. cR8-Wn b<Sd S-", +"bW< SZb<d g<Sc Sb<dj Sb8<d SbjZn* V-nsZ oU, ,Uo& ,RoD oUc< ,Uo5 ,Uo8 oU,5D ", +"ocR,5 obS< Sb<o& oV, S<oc pbS< Spb8< o,Vp s,oV ob=R o-U =RboD =Roc =Rbo5 ->", +"oU ob5=RD oc->R S=b =bS- =boV Sc= Sp=b =bS> oV,p= Scs= ,UoW oU&,W ,UoH ocR,", +"H oU,5W oU8,W oUH,5 cR5W< Sb<oW S<WoU& Z,oV oV,Zc SpbW< SbWo8, oV,Zp oVsZ, ", +"vR=b oU-v ovU,H =Rcv ovU,5 o-Uv> ob5=RH cv=>R =bSv o-USv SZ=b Z=Sc S=bpv o-", +"pvU oVvp, Scy= q< q!< q<B qa< q1< q8< 1<qB 1aq< q<M <Mq! qT< T<qa l<q q8l< ", +"qTl< sq< q* q+< q*B qa* q*1 q8* 1*qB 1aq* q*M +<qM qT* +Tq* l*q q+l< qTl* s", +"q* q<E <Eq! qH< H<qa 1<qE 8<qE 1Hq< H8q< <MqE q!<ME H<qT qHTa< q<lE l<q8E q", +"Hl< qHs< qd< +<qd qH* gq< 1<qd 8<qd 1Hq* q8g< <dqM q+<dM HMq* qTg< qdl< l+q", +"<d qHl* l<gq q4< 4<q! 4<qB 4aq< 7q< 7<q8 q<7B 7<qa 4Mq< q!4<M 4Tq< qT4a< 7q", +"l< 7lq8< 7<qT 7qs< q= q=+ q=B q=a q=7 q>= =B7q =aq> q=M q+=M q=T q+=T l=q q", +">l= 7q=T sq= 4<qE q!4<E 4Hq< qH4a< q<7E 7q8<E 7<qH 7qH8< q4<ME <MEq!4 qH4T<", +" 4HMqa< 7lq<E l<87qE 7qHl< sq7H< q=d =+qd q=H gq= 7dq= >=qd 7q=H g=q> qd=M ", +"q=+dM qH=T =Tgq ldq= q>l=d lHq= l=gq q<P <Pq! <PqB a<qP 1<qP 8<qP q1<PB q8a", +"<P Sq< q!S< qTS< qaS< l<S S8l< lTS< l<Ss q*P +<qP P*qB aPq* 1Pq* 8Pq* q*1PB", +" q8*aP Sq* q+S< qTS* qaS* Sql* S+l< Sq*lT s*Sq qW< W<q! H<qW Waq< 1Wq< W8q<", +" qH1W< qH8W< qWS< SqW<! Zq< qaZ< S<lW Sq8W< l<Zq s<Zq qW* +Wq* HPq* qWg< 1W", +"q* W8q* qH*1W gq1W< qWS* Sq+W< Zq* g<Zq S<ld Sq8W* l*Zq l<gS oq< o<q! q<oB ", +"o<qa 7<oq o<q8 7oq<B 7oaq< oqS< Sq<o! o<qT Sqao< r< r8< rT< rs< q=o o+q= =B", +"oq oq=a 7oq= q=o> 7o=qB q>o=a S=q S+q= Sq=T Sq=a r= r>= r=T rs= o<qW oqW<! 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+ +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Prepares the data for MSOPs of 4-variable functions.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ReadMsops( char ** ppSopSizes, char *** ppSops ) +{ + unsigned uMasks[4][2] = { + { 0x5555, 0xAAAA }, + { 0x3333, 0xCCCC }, + { 0x0F0F, 0xF0F0 }, + { 0x00FF, 0xFF00 } + }; + char Map[256], * pPrev, * pMemory; + char * pSopSizes, ** pSops; + int i, k, b, Size; + + // map chars into their numbers + for ( i = 0; i < 256; i++ ) + Map[i] = (char)(-1); + for ( i = 0; i < 81; i++ ) + Map[(int)s_Data3[i]] = (char)i; + + // count the number of strings + for ( Size = 0; s_Data4[Size] && Size < 100000; Size++ ); + assert( Size < 100000 ); + + // allocate memory + pMemory = ABC_ALLOC( char, Size * 75 ); + // copy the array into memory + for ( i = 0; i < Size; i++ ) + for ( k = 0; k < 75; k++ ) + if ( s_Data4[i][k] == ' ' ) + pMemory[i*75+k] = (char)(-1); + else + pMemory[i*75+k] = Map[(int)s_Data4[i][k]]; + + // set pointers and compute SOP sizes + pSopSizes = ABC_ALLOC( char, 65536 ); + pSops = ABC_ALLOC( char *, 65536 ); + pSopSizes[0] = 0; + pSops[0] = NULL; + pPrev = pMemory; + for ( k = 0, i = 1; i < 65536; k++ ) + if ( pMemory[k] == (char)(-1) ) + { + pSopSizes[i] = pMemory + k - pPrev; + pSops[i++] = pPrev; + pPrev = pMemory + k + 1; + } + *ppSopSizes = pSopSizes; + *ppSops = pSops; + + // verify the results - derive truth table from SOP + for ( i = 1; i < 65536; i++ ) + { + int uTruth = 0, uCube, Lit; + for ( k = 0; k < pSopSizes[i]; k++ ) + { + uCube = 0xFFFF; + Lit = pSops[i][k]; + for ( b = 3; b >= 0; b-- ) + { + if ( Lit % 3 == 0 ) + uCube &= uMasks[b][0]; + else if ( Lit % 3 == 1 ) + uCube &= uMasks[b][1]; + Lit = Lit / 3; + } + uTruth |= uCube; + } + assert( uTruth == i ); + } +} + +#if 0 + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Aig_ManDeriveCnfTest() +{ + int i, k, Lit; + printf( "\n" ); + for ( i = 80; i >= 0; i-- ) + { + Lit = i; + for ( k = 0; k < 4; k++ ) + { + if ( Lit % 3 == 0 ) + printf( "%c", 'A' + k ); + else if ( Lit % 3 == 1 ) + printf( "%c", 'a' + k ); + Lit = Lit / 3; + } + printf( "\n" ); + } +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Aig_ManDeriveCnfTest2() +{ + char s_Data3[81] = "!#&()*+,-.0123456789:;<=>?ABCDEFGHIJKLMNOPQRSTUVWXYZ[]abcdefghijklmnopqrstuvwxyz|"; + + unsigned uMasks[4][2] = { + { 0x5555, 0xAAAA }, + { 0x3333, 0xCCCC }, + { 0x0F0F, 0xF0F0 }, + { 0x00FF, 0xFF00 } + }; + char Buffer[100], * pCur; + FILE * pFile; + int CountCur, Counter = 0, nLines = 0; + int pLines[1<<16] = {0}; + int pNums[1<<16] = {0}; + unsigned uTruth, uTruth2, uCube, cCube; + char * pSops[1<<16] = {0}; + char Sop[10]; + char Cube[4]; + int i, k; + + pFile = fopen( "cands2.txt", "r" ); + while ( fgets( Buffer, 100, pFile ) ) + { + if ( Buffer[0] == '0' ) + Extra_ReadHexadecimal( &uTruth2, Buffer+2, 4 ); + else + uTruth2 = 0xFFFFFF; + + // skip all chars till a-d or A-D + if ( Buffer[0] == '0' ) + for ( pCur = Buffer; *pCur != '\n'; pCur++ ) + { +// if ( *pCur >= 'a' && *pCur <= 'd' || *pCur >= 'A' && *pCur <= 'D' ) + if ( *pCur == ':' ) + { + pCur++; + break; + } + } + else + pCur = Buffer; + + + uTruth = 0; + CountCur = 0; + uCube = 0xFFFF; + for ( i = 0; i < 4; i++ ) + Cube[i] = 2; + + for ( ; *pCur; pCur++ ) + { + if ( *pCur == '+' || *pCur == '\n' ) + { + uTruth |= uCube; + uCube = 0xFFFF; + + // get the cube + cCube = 0; + for ( i = 0; i < 4; i++ ) + cCube = 3 * cCube + Cube[i]; + for ( i = 0; i < 4; i++ ) + Cube[i] = 2; + + assert( cCube >= 0 && cCube < 81 ); + Sop[CountCur] = cCube; + CountCur++; + if ( *pCur == '\n' ) + { + Sop[CountCur] = 0; + break; + } + } + else if ( *pCur >= 'a' && *pCur <= 'd' ) + { + uCube &= uMasks[*pCur-'a'][1]; + Cube[*pCur-'a'] = 1; + } + else if ( *pCur >= 'A' && *pCur <= 'D' ) + { + uCube &= uMasks[*pCur-'A'][0]; + Cube[*pCur-'A'] = 0; + } + } + assert( *pCur == '\n' ); + assert( uTruth2 == 0xFFFFFF || uTruth2 == uTruth ); + + Counter += CountCur; + pNums[uTruth] = CountCur; + pSops[uTruth] = ALLOC( char, CountCur ); + memcpy( pSops[uTruth], Sop, CountCur ); + pLines[nLines++] = Counter; + } + fclose( pFile ); + + printf( "Lines = %d. Counter = %d.\n", nLines, Counter ); + +/* + // write the number of cubes + for ( i = 0; i < 65536; i++ ) + printf( "%d,%d ", pNums[i], pNums[i] + pNums[0xffff & ~i] ); + printf( "\n" ); +*/ + + // write the number of cubes + Counter = 0; + for ( i = 1; i < 65536; i++ ) + { + CountCur = pNums[i]; + assert( CountCur > 0 ); + for ( k = 0; k <= CountCur; k++ ) + { + if ( k < CountCur ) + { + assert( pSops[i][k] >= 0 && pSops[i][k] < 81 ); + printf( "%c", s_Data3[pSops[i][k]] ); + } + else + printf( " " ); + if ( ++Counter == 75 ) + { + printf( "\",\n\"" ); + Counter = 0; + } + } + } + printf( "\n" ); + + return 1; +} + +#endif + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfFast.c b/src/sat/cnf/cnfFast.c new file mode 100644 index 00000000..6ec2b6a6 --- /dev/null +++ b/src/sat/cnf/cnfFast.c @@ -0,0 +1,697 @@ +/**CFile**************************************************************** + + FileName [cnfFast.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfFast.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" +#include "src/bool/kit/kit.h" + +ABC_NAMESPACE_IMPL_START + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Detects multi-input gate rooted at this node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CollectLeaves_rec( Aig_Obj_t * pRoot, Aig_Obj_t * pObj, Vec_Ptr_t * vSuper, int fStopCompl ) +{ + if ( pRoot != pObj && (pObj->fMarkA || (fStopCompl && Aig_IsComplement(pObj))) ) + { + Vec_PtrPushUnique( vSuper, fStopCompl ? pObj : Aig_Regular(pObj) ); + return; + } + assert( Aig_ObjIsNode(pObj) ); + if ( fStopCompl ) + { + Cnf_CollectLeaves_rec( pRoot, Aig_ObjChild0(pObj), vSuper, 1 ); + Cnf_CollectLeaves_rec( pRoot, Aig_ObjChild1(pObj), vSuper, 1 ); + } + else + { + Cnf_CollectLeaves_rec( pRoot, Aig_ObjFanin0(pObj), vSuper, 0 ); + Cnf_CollectLeaves_rec( pRoot, Aig_ObjFanin1(pObj), vSuper, 0 ); + } +} + +/**Function************************************************************* + + Synopsis [Detects multi-input gate rooted at this node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CollectLeaves( Aig_Obj_t * pRoot, Vec_Ptr_t * vSuper, int fStopCompl ) +{ + assert( !Aig_IsComplement(pRoot) ); + Vec_PtrClear( vSuper ); + Cnf_CollectLeaves_rec( pRoot, pRoot, vSuper, fStopCompl ); +} + +/**Function************************************************************* + + Synopsis [Collects nodes inside the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CollectVolume_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vNodes ) +{ + if ( Aig_ObjIsTravIdCurrent( p, pObj ) ) + return; + Aig_ObjSetTravIdCurrent( p, pObj ); + assert( Aig_ObjIsNode(pObj) ); + Cnf_CollectVolume_rec( p, Aig_ObjFanin0(pObj), vNodes ); + Cnf_CollectVolume_rec( p, Aig_ObjFanin1(pObj), vNodes ); + Vec_PtrPush( vNodes, pObj ); +} + +/**Function************************************************************* + + Synopsis [Collects nodes inside the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CollectVolume( Aig_Man_t * p, Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes ) +{ + Aig_Obj_t * pObj; + int i; + Aig_ManIncrementTravId( p ); + Vec_PtrForEachEntry( Aig_Obj_t *, vLeaves, pObj, i ) + Aig_ObjSetTravIdCurrent( p, pObj ); + Vec_PtrClear( vNodes ); + Cnf_CollectVolume_rec( p, pRoot, vNodes ); +} + +/**Function************************************************************* + + Synopsis [Derive truth table.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +word Cnf_CutDeriveTruth( Aig_Man_t * p, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes ) +{ + static word Truth6[6] = { + 0xAAAAAAAAAAAAAAAA, + 0xCCCCCCCCCCCCCCCC, + 0xF0F0F0F0F0F0F0F0, + 0xFF00FF00FF00FF00, + 0xFFFF0000FFFF0000, + 0xFFFFFFFF00000000 + }; + static word C[2] = { 0, ~0 }; + static word S[256]; + Aig_Obj_t * pObj; + int i; + assert( Vec_PtrSize(vLeaves) <= 6 && Vec_PtrSize(vNodes) > 0 ); + assert( Vec_PtrSize(vLeaves) + Vec_PtrSize(vNodes) <= 256 ); + Vec_PtrForEachEntry( Aig_Obj_t *, vLeaves, pObj, i ) + { + pObj->iData = i; + S[pObj->iData] = Truth6[i]; + } + Vec_PtrForEachEntry( Aig_Obj_t *, vNodes, pObj, i ) + { + pObj->iData = Vec_PtrSize(vLeaves) + i; + S[pObj->iData] = (S[Aig_ObjFanin0(pObj)->iData] ^ C[Aig_ObjFaninC0(pObj)]) & + (S[Aig_ObjFanin1(pObj)->iData] ^ C[Aig_ObjFaninC1(pObj)]); + } + return S[pObj->iData]; +} + + +/**Function************************************************************* + + Synopsis [Collects nodes inside the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline int Cnf_ObjGetLit( Vec_Int_t * vMap, Aig_Obj_t * pObj, int fCompl ) +{ + int iSatVar = vMap ? Vec_IntEntry(vMap, Aig_ObjId(pObj)) : Aig_ObjId(pObj); + assert( iSatVar > 0 ); + return iSatVar + iSatVar + fCompl; +} + +/**Function************************************************************* + + Synopsis [Collects nodes inside the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ComputeClauses( Aig_Man_t * p, Aig_Obj_t * pRoot, + Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes, Vec_Int_t * vMap, Vec_Int_t * vCover, Vec_Int_t * vClauses ) +{ + Aig_Obj_t * pLeaf; + int c, k, Cube, OutLit, RetValue; + word Truth; + assert( pRoot->fMarkA ); + + Vec_IntClear( vClauses ); + + OutLit = Cnf_ObjGetLit( vMap, pRoot, 0 ); + // detect cone + Cnf_CollectLeaves( pRoot, vLeaves, 0 ); + Cnf_CollectVolume( p, pRoot, vLeaves, vNodes ); + assert( pRoot == Vec_PtrEntryLast(vNodes) ); + // check if this is an AND-gate + Vec_PtrForEachEntry( Aig_Obj_t *, vNodes, pLeaf, k ) + { + if ( Aig_ObjFaninC0(pLeaf) && !Aig_ObjFanin0(pLeaf)->fMarkA ) + break; + if ( Aig_ObjFaninC1(pLeaf) && !Aig_ObjFanin1(pLeaf)->fMarkA ) + break; + } + if ( k == Vec_PtrSize(vNodes) ) + { + Cnf_CollectLeaves( pRoot, vLeaves, 1 ); + // write big clause + Vec_IntPush( vClauses, 0 ); + Vec_IntPush( vClauses, OutLit ); + Vec_PtrForEachEntry( Aig_Obj_t *, vLeaves, pLeaf, k ) + Vec_IntPush( vClauses, Cnf_ObjGetLit(vMap, Aig_Regular(pLeaf), !Aig_IsComplement(pLeaf)) ); + // write small clauses + Vec_PtrForEachEntry( Aig_Obj_t *, vLeaves, pLeaf, k ) + { + Vec_IntPush( vClauses, 0 ); + Vec_IntPush( vClauses, OutLit ^ 1 ); + Vec_IntPush( vClauses, Cnf_ObjGetLit(vMap, Aig_Regular(pLeaf), Aig_IsComplement(pLeaf)) ); + } + return; + } + if ( Vec_PtrSize(vLeaves) > 6 ) + printf( "FastCnfGeneration: Internal error!!!\n" ); + assert( Vec_PtrSize(vLeaves) <= 6 ); + + Truth = Cnf_CutDeriveTruth( p, vLeaves, vNodes ); + if ( Truth == 0 || Truth == ~0 ) + { + Vec_IntPush( vClauses, 0 ); + Vec_IntPush( vClauses, (Truth == 0) ? (OutLit ^ 1) : OutLit ); + return; + } + + RetValue = Kit_TruthIsop( (unsigned *)&Truth, Vec_PtrSize(vLeaves), vCover, 0 ); + assert( RetValue >= 0 ); + + Vec_IntForEachEntry( vCover, Cube, c ) + { + Vec_IntPush( vClauses, 0 ); + Vec_IntPush( vClauses, OutLit ); + for ( k = 0; k < Vec_PtrSize(vLeaves); k++, Cube >>= 2 ) + { + if ( (Cube & 3) == 0 ) + continue; + assert( (Cube & 3) != 3 ); + Vec_IntPush( vClauses, Cnf_ObjGetLit(vMap, (Aig_Obj_t *)Vec_PtrEntry(vLeaves,k), (Cube&3)!=1) ); + } + } + + Truth = ~Truth; + + RetValue = Kit_TruthIsop( (unsigned *)&Truth, Vec_PtrSize(vLeaves), vCover, 0 ); + assert( RetValue >= 0 ); + Vec_IntForEachEntry( vCover, Cube, c ) + { + Vec_IntPush( vClauses, 0 ); + Vec_IntPush( vClauses, OutLit ^ 1 ); + for ( k = 0; k < Vec_PtrSize(vLeaves); k++, Cube >>= 2 ) + { + if ( (Cube & 3) == 0 ) + continue; + assert( (Cube & 3) != 3 ); + Vec_IntPush( vClauses, Cnf_ObjGetLit(vMap, (Aig_Obj_t *)Vec_PtrEntry(vLeaves,k), (Cube&3)!=1) ); + } + } +} + + + +/**Function************************************************************* + + Synopsis [Marks AIG for CNF computation.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DeriveFastMark( Aig_Man_t * p ) +{ + Vec_Int_t * vSupps; + Vec_Ptr_t * vLeaves, * vNodes; + Aig_Obj_t * pObj, * pTemp, * pObjC, * pObj0, * pObj1; + int i, k, nFans, Counter; + + vLeaves = Vec_PtrAlloc( 100 ); + vNodes = Vec_PtrAlloc( 100 ); + vSupps = Vec_IntStart( Aig_ManObjNumMax(p) ); + + // mark CIs + Aig_ManForEachPi( p, pObj, i ) + pObj->fMarkA = 1; + + // mark CO drivers + Aig_ManForEachPo( p, pObj, i ) + Aig_ObjFanin0(pObj)->fMarkA = 1; + + // mark MUX/XOR nodes + Aig_ManForEachNode( p, pObj, i ) + { + assert( !pObj->fMarkB ); + if ( !Aig_ObjIsMuxType(pObj) ) + continue; + pObj0 = Aig_ObjFanin0(pObj); + if ( pObj0->fMarkB || Aig_ObjRefs(pObj0) > 1 ) + continue; + pObj1 = Aig_ObjFanin1(pObj); + if ( pObj1->fMarkB || Aig_ObjRefs(pObj1) > 1 ) + continue; + // mark nodes + pObj->fMarkB = 1; + pObj0->fMarkB = 1; + pObj1->fMarkB = 1; + // mark inputs and outputs + pObj->fMarkA = 1; + Aig_ObjFanin0(pObj0)->fMarkA = 1; + Aig_ObjFanin1(pObj0)->fMarkA = 1; + Aig_ObjFanin0(pObj1)->fMarkA = 1; + Aig_ObjFanin1(pObj1)->fMarkA = 1; + } + + // mark nodes with multiple fanouts and pointed to by complemented edges + Aig_ManForEachNode( p, pObj, i ) + { + // mark nodes with many fanouts + if ( Aig_ObjRefs(pObj) > 1 ) + pObj->fMarkA = 1; + // mark nodes pointed to by a complemented edge + if ( Aig_ObjFaninC0(pObj) && !Aig_ObjFanin0(pObj)->fMarkB ) + Aig_ObjFanin0(pObj)->fMarkA = 1; + if ( Aig_ObjFaninC1(pObj) && !Aig_ObjFanin1(pObj)->fMarkB ) + Aig_ObjFanin1(pObj)->fMarkA = 1; + } + + // compute supergate size for internal marked nodes + Aig_ManForEachNode( p, pObj, i ) + { + if ( !pObj->fMarkA ) + continue; + if ( pObj->fMarkB ) + { + if ( !Aig_ObjIsMuxType(pObj) ) + continue; + pObjC = Aig_ObjRecognizeMux( pObj, &pObj1, &pObj0 ); + pObj0 = Aig_Regular(pObj0); + pObj1 = Aig_Regular(pObj1); + assert( pObj0->fMarkA ); + assert( pObj1->fMarkA ); +// if ( pObj0 == pObj1 ) +// continue; + nFans = 1 + (pObj0 == pObj1); + if ( !pObj0->fMarkB && !Aig_ObjIsPi(pObj0) && Aig_ObjRefs(pObj0) == nFans && Vec_IntEntry(vSupps, Aig_ObjId(pObj0)) < 3 ) + { + pObj0->fMarkA = 0; + continue; + } + if ( !pObj1->fMarkB && !Aig_ObjIsPi(pObj1) && Aig_ObjRefs(pObj1) == nFans && Vec_IntEntry(vSupps, Aig_ObjId(pObj1)) < 3 ) + { + pObj1->fMarkA = 0; + continue; + } + continue; + } + + Cnf_CollectLeaves( pObj, vLeaves, 1 ); + Vec_IntWriteEntry( vSupps, Aig_ObjId(pObj), Vec_PtrSize(vLeaves) ); + if ( Vec_PtrSize(vLeaves) >= 6 ) + continue; + Vec_PtrForEachEntry( Aig_Obj_t *, vLeaves, pTemp, k ) + { + pTemp = Aig_Regular(pTemp); + assert( pTemp->fMarkA ); + if ( pTemp->fMarkB || Aig_ObjIsPi(pTemp) || Aig_ObjRefs(pTemp) > 1 ) + continue; + assert( Vec_IntEntry(vSupps, Aig_ObjId(pTemp)) > 0 ); + if ( Vec_PtrSize(vLeaves) - 1 + Vec_IntEntry(vSupps, Aig_ObjId(pTemp)) > 6 ) + continue; + pTemp->fMarkA = 0; + Vec_IntWriteEntry( vSupps, Aig_ObjId(pObj), 6 ); +//printf( "%d %d ", Vec_PtrSize(vLeaves), Vec_IntEntry(vSupps, Aig_ObjId(pTemp)) ); + break; + } + } + Aig_ManCleanMarkB( p ); + + // check CO drivers + Counter = 0; + Aig_ManForEachPo( p, pObj, i ) + Counter += !Aig_ObjFanin0(pObj)->fMarkA; + if ( Counter ) + printf( "PO-driver rule is violated %d times.\n", Counter ); + + // check that the AND-gates are fine + Counter = 0; + Aig_ManForEachNode( p, pObj, i ) + { + assert( pObj->fMarkB == 0 ); + if ( !pObj->fMarkA ) + continue; + Cnf_CollectLeaves( pObj, vLeaves, 0 ); + if ( Vec_PtrSize(vLeaves) <= 6 ) + continue; + Cnf_CollectVolume( p, pObj, vLeaves, vNodes ); + Vec_PtrForEachEntry( Aig_Obj_t *, vNodes, pTemp, k ) + { + if ( Aig_ObjFaninC0(pTemp) && !Aig_ObjFanin0(pTemp)->fMarkA ) + Counter++; + if ( Aig_ObjFaninC1(pTemp) && !Aig_ObjFanin1(pTemp)->fMarkA ) + Counter++; + } + } + if ( Counter ) + printf( "AND-gate rule is violated %d times.\n", Counter ); + + Vec_PtrFree( vLeaves ); + Vec_PtrFree( vNodes ); + Vec_IntFree( vSupps ); +} + + +/**Function************************************************************* + + Synopsis [Counts the number of clauses.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_CutCountClauses( Aig_Man_t * p, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vNodes, Vec_Int_t * vCover ) +{ + word Truth; + Aig_Obj_t * pObj; + int i, RetValue, nSize = 0; + if ( Vec_PtrSize(vLeaves) > 6 ) + { + // make sure this is an AND gate + Vec_PtrForEachEntry( Aig_Obj_t *, vNodes, pObj, i ) + { + if ( Aig_ObjFaninC0(pObj) && !Aig_ObjFanin0(pObj)->fMarkA ) + printf( "Unusual 1!\n" ); + if ( Aig_ObjFaninC1(pObj) && !Aig_ObjFanin1(pObj)->fMarkA ) + printf( "Unusual 2!\n" ); + continue; + + assert( !Aig_ObjFaninC0(pObj) || Aig_ObjFanin0(pObj)->fMarkA ); + assert( !Aig_ObjFaninC1(pObj) || Aig_ObjFanin1(pObj)->fMarkA ); + } + return Vec_PtrSize(vLeaves) + 1; + } + Truth = Cnf_CutDeriveTruth( p, vLeaves, vNodes ); + + RetValue = Kit_TruthIsop( (unsigned *)&Truth, Vec_PtrSize(vLeaves), vCover, 0 ); + assert( RetValue >= 0 ); + nSize += Vec_IntSize(vCover); + + Truth = ~Truth; + + RetValue = Kit_TruthIsop( (unsigned *)&Truth, Vec_PtrSize(vLeaves), vCover, 0 ); + assert( RetValue >= 0 ); + nSize += Vec_IntSize(vCover); + return nSize; +} + +/**Function************************************************************* + + Synopsis [Counts the size of the CNF, assuming marks are set.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_CountCnfSize( Aig_Man_t * p ) +{ + Vec_Ptr_t * vLeaves, * vNodes; + Vec_Int_t * vCover; + Aig_Obj_t * pObj; + int nVars = 0, nClauses = 0; + int i, nSize; + + vLeaves = Vec_PtrAlloc( 100 ); + vNodes = Vec_PtrAlloc( 100 ); + vCover = Vec_IntAlloc( 1 << 16 ); + + Aig_ManForEachObj( p, pObj, i ) + nVars += pObj->fMarkA; + + Aig_ManForEachNode( p, pObj, i ) + { + if ( !pObj->fMarkA ) + continue; + Cnf_CollectLeaves( pObj, vLeaves, 0 ); + Cnf_CollectVolume( p, pObj, vLeaves, vNodes ); + assert( pObj == Vec_PtrEntryLast(vNodes) ); + + nSize = Cnf_CutCountClauses( p, vLeaves, vNodes, vCover ); +// printf( "%d(%d) ", Vec_PtrSize(vLeaves), nSize ); + + nClauses += nSize; + } +// printf( "\n" ); + printf( "Vars = %d Clauses = %d\n", nVars, nClauses ); + + Vec_PtrFree( vLeaves ); + Vec_PtrFree( vNodes ); + Vec_IntFree( vCover ); + return nClauses; +} + +/**Function************************************************************* + + Synopsis [Derives CNF from the marked AIG.] + + Description [Assumes that marking is such that when we traverse from each + marked node, the logic cone has 6 inputs or less, or it is a multi-input AND.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DeriveFastClauses( Aig_Man_t * p, int nOutputs ) +{ + Cnf_Dat_t * pCnf; + Vec_Int_t * vLits, * vClas, * vMap, * vTemp; + Vec_Ptr_t * vLeaves, * vNodes; + Vec_Int_t * vCover; + Aig_Obj_t * pObj; + int i, k, nVars, Entry, OutLit, DriLit; + + vLits = Vec_IntAlloc( 1 << 16 ); + vClas = Vec_IntAlloc( 1 << 12 ); + vMap = Vec_IntStartFull( Aig_ManObjNumMax(p) ); + + // assign variables for the outputs + nVars = 1; + if ( nOutputs ) + { + if ( Aig_ManRegNum(p) == 0 ) + { + assert( nOutputs == Aig_ManPoNum(p) ); + Aig_ManForEachPo( p, pObj, i ) + Vec_IntWriteEntry( vMap, Aig_ObjId(pObj), nVars++ ); + } + else + { + assert( nOutputs == Aig_ManRegNum(p) ); + Aig_ManForEachLiSeq( p, pObj, i ) + Vec_IntWriteEntry( vMap, Aig_ObjId(pObj), nVars++ ); + } + } + // assign variables to the internal nodes + Aig_ManForEachNodeReverse( p, pObj, i ) + if ( pObj->fMarkA ) + Vec_IntWriteEntry( vMap, Aig_ObjId(pObj), nVars++ ); + // assign variables to the PIs and constant node + Aig_ManForEachPi( p, pObj, i ) + Vec_IntWriteEntry( vMap, Aig_ObjId(pObj), nVars++ ); + Vec_IntWriteEntry( vMap, Aig_ObjId(Aig_ManConst1(p)), nVars++ ); + + // create clauses + vLeaves = Vec_PtrAlloc( 100 ); + vNodes = Vec_PtrAlloc( 100 ); + vCover = Vec_IntAlloc( 1 << 16 ); + vTemp = Vec_IntAlloc( 100 ); + Aig_ManForEachNodeReverse( p, pObj, i ) + { + if ( !pObj->fMarkA ) + continue; + Cnf_ComputeClauses( p, pObj, vLeaves, vNodes, vMap, vCover, vTemp ); + Vec_IntForEachEntry( vTemp, Entry, k ) + { + if ( Entry == 0 ) + Vec_IntPush( vClas, Vec_IntSize(vLits) ); + else + Vec_IntPush( vLits, Entry ); + } + } + Vec_PtrFree( vLeaves ); + Vec_PtrFree( vNodes ); + Vec_IntFree( vCover ); + Vec_IntFree( vTemp ); + + // create clauses for the outputs + Aig_ManForEachPo( p, pObj, i ) + { + DriLit = Cnf_ObjGetLit( vMap, Aig_ObjFanin0(pObj), Aig_ObjFaninC0(pObj) ); + if ( i < Aig_ManPoNum(p) - nOutputs ) + { + Vec_IntPush( vClas, Vec_IntSize(vLits) ); + Vec_IntPush( vLits, DriLit ); + } + else + { + OutLit = Cnf_ObjGetLit( vMap, pObj, 0 ); + // first clause + Vec_IntPush( vClas, Vec_IntSize(vLits) ); + Vec_IntPush( vLits, OutLit ); + Vec_IntPush( vLits, DriLit ^ 1 ); + // second clause + Vec_IntPush( vClas, Vec_IntSize(vLits) ); + Vec_IntPush( vLits, OutLit ^ 1 ); + Vec_IntPush( vLits, DriLit ); + } + } + + // write the constant literal + OutLit = Cnf_ObjGetLit( vMap, Aig_ManConst1(p), 0 ); + Vec_IntPush( vClas, Vec_IntSize(vLits) ); + Vec_IntPush( vLits, OutLit ); + + // create structure + pCnf = ABC_CALLOC( Cnf_Dat_t, 1 ); + pCnf->pMan = p; + pCnf->nVars = nVars; + pCnf->nLiterals = Vec_IntSize( vLits ); + pCnf->nClauses = Vec_IntSize( vClas ); + pCnf->pClauses = ABC_ALLOC( int *, pCnf->nClauses + 1 ); + pCnf->pClauses[0] = Vec_IntReleaseArray( vLits ); + Vec_IntForEachEntry( vClas, Entry, i ) + pCnf->pClauses[i] = pCnf->pClauses[0] + Entry; + pCnf->pClauses[pCnf->nClauses] = pCnf->pClauses[0] + pCnf->nLiterals; + pCnf->pVarNums = Vec_IntReleaseArray( vMap ); + + // cleanup + Vec_IntFree( vLits ); + Vec_IntFree( vClas ); + Vec_IntFree( vMap ); + return pCnf; +} + +/**Function************************************************************* + + Synopsis [Fast CNF computation.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DeriveFast( Aig_Man_t * p, int nOutputs ) +{ + Cnf_Dat_t * pCnf = NULL; + int clk, clkTotal = clock(); +// printf( "\n" ); + Aig_ManCleanMarkAB( p ); + // create initial marking + clk = clock(); + Cnf_DeriveFastMark( p ); +// Abc_PrintTime( 1, "Marking", clock() - clk ); + // compute CNF size + clk = clock(); + pCnf = Cnf_DeriveFastClauses( p, nOutputs ); +// Abc_PrintTime( 1, "Clauses", clock() - clk ); + // derive the resulting CNF + Aig_ManCleanMarkA( p ); +// Abc_PrintTime( 1, "TOTAL ", clock() - clkTotal ); + +// printf( "Vars = %6d. Clauses = %7d. Literals = %8d. \n", pCnf->nVars, pCnf->nClauses, pCnf->nLiterals ); + +// Cnf_DataFree( pCnf ); +// pCnf = NULL; + return pCnf; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfMan.c b/src/sat/cnf/cnfMan.c new file mode 100644 index 00000000..a670a69d --- /dev/null +++ b/src/sat/cnf/cnfMan.c @@ -0,0 +1,693 @@ +/**CFile**************************************************************** + + FileName [cnfMan.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfMan.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" +#include "src/sat/bsat/satSolver.h" +#include "src/sat/bsat/satSolver2.h" +#include "src/misc/zlib/zlib.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static inline int Cnf_Lit2Var( int Lit ) { return (Lit & 1)? -(Lit >> 1)-1 : (Lit >> 1)+1; } +static inline int Cnf_Lit2Var2( int Lit ) { return (Lit & 1)? -(Lit >> 1) : (Lit >> 1); } + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Starts the fraiging manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Man_t * Cnf_ManStart() +{ + Cnf_Man_t * p; + int i; + // allocate the manager + p = ABC_ALLOC( Cnf_Man_t, 1 ); + memset( p, 0, sizeof(Cnf_Man_t) ); + // derive internal data structures + Cnf_ReadMsops( &p->pSopSizes, &p->pSops ); + // allocate memory manager for cuts + p->pMemCuts = Aig_MmFlexStart(); + p->nMergeLimit = 10; + // allocate temporary truth tables + p->pTruths[0] = ABC_ALLOC( unsigned, 4 * Abc_TruthWordNum(p->nMergeLimit) ); + for ( i = 1; i < 4; i++ ) + p->pTruths[i] = p->pTruths[i-1] + Abc_TruthWordNum(p->nMergeLimit); + p->vMemory = Vec_IntAlloc( 1 << 18 ); + return p; +} + +/**Function************************************************************* + + Synopsis [Stops the fraiging manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ManStop( Cnf_Man_t * p ) +{ + Vec_IntFree( p->vMemory ); + ABC_FREE( p->pTruths[0] ); + Aig_MmFlexStop( p->pMemCuts, 0 ); + ABC_FREE( p->pSopSizes ); + ABC_FREE( p->pSops[1] ); + ABC_FREE( p->pSops ); + ABC_FREE( p ); +} + +/**Function************************************************************* + + Synopsis [Returns the array of CI IDs.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Int_t * Cnf_DataCollectPiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p ) +{ + Vec_Int_t * vCiIds; + Aig_Obj_t * pObj; + int i; + vCiIds = Vec_IntAlloc( Aig_ManPiNum(p) ); + Aig_ManForEachPi( p, pObj, i ) + Vec_IntPush( vCiIds, pCnf->pVarNums[pObj->Id] ); + return vCiIds; +} + +/**Function************************************************************* + + Synopsis [Allocates the new CNF.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DataAlloc( Aig_Man_t * pAig, int nVars, int nClauses, int nLiterals ) +{ + Cnf_Dat_t * pCnf; + int i; + pCnf = ABC_ALLOC( Cnf_Dat_t, 1 ); + memset( pCnf, 0, sizeof(Cnf_Dat_t) ); + pCnf->pMan = pAig; + pCnf->nVars = nVars; + pCnf->nClauses = nClauses; + pCnf->nLiterals = nLiterals; + pCnf->pClauses = ABC_ALLOC( int *, nClauses + 1 ); + pCnf->pClauses[0] = ABC_ALLOC( int, nLiterals ); + pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals; + pCnf->pVarNums = ABC_ALLOC( int, Aig_ManObjNumMax(pAig) ); +// memset( pCnf->pVarNums, 0xff, sizeof(int) * Aig_ManObjNumMax(pAig) ); + for ( i = 0; i < Aig_ManObjNumMax(pAig); i++ ) + pCnf->pVarNums[i] = -1; + return pCnf; +} + +/**Function************************************************************* + + Synopsis [Allocates the new CNF.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DataDup( Cnf_Dat_t * p ) +{ + Cnf_Dat_t * pCnf; + int i; + pCnf = Cnf_DataAlloc( p->pMan, p->nVars, p->nClauses, p->nLiterals ); + memcpy( pCnf->pClauses[0], p->pClauses[0], sizeof(int) * p->nLiterals ); + memcpy( pCnf->pVarNums, p->pVarNums, sizeof(int) * Aig_ManObjNumMax(p->pMan) ); + for ( i = 1; i < p->nClauses; i++ ) + pCnf->pClauses[i] = pCnf->pClauses[0] + (p->pClauses[i] - p->pClauses[0]); + return pCnf; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataFree( Cnf_Dat_t * p ) +{ + if ( p == NULL ) + return; + ABC_FREE( p->pObj2Clause ); + ABC_FREE( p->pObj2Count ); + ABC_FREE( p->pClauses[0] ); + ABC_FREE( p->pClauses ); + ABC_FREE( p->pVarNums ); + ABC_FREE( p ); +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataLift( Cnf_Dat_t * p, int nVarsPlus ) +{ + Aig_Obj_t * pObj; + int v; + Aig_ManForEachObj( p->pMan, pObj, v ) + if ( p->pVarNums[pObj->Id] >= 0 ) + p->pVarNums[pObj->Id] += nVarsPlus; + for ( v = 0; v < p->nLiterals; v++ ) + p->pClauses[0][v] += 2*nVarsPlus; +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataFlipLastLiteral( Cnf_Dat_t * p ) +{ + p->pClauses[0][p->nLiterals-1] = lit_neg( p->pClauses[0][p->nLiterals-1] ); +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataPrint( Cnf_Dat_t * p, int fReadable ) +{ + FILE * pFile = stdout; + int * pLit, * pStop, i; + fprintf( pFile, "p cnf %d %d\n", p->nVars, p->nClauses ); + for ( i = 0; i < p->nClauses; i++ ) + { + for ( pLit = p->pClauses[i], pStop = p->pClauses[i+1]; pLit < pStop; pLit++ ) + fprintf( pFile, "%d ", fReadable? Cnf_Lit2Var2(*pLit) : Cnf_Lit2Var(*pLit) ); + fprintf( pFile, "\n" ); + } + fprintf( pFile, "\n" ); +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataWriteIntoFileGz( Cnf_Dat_t * p, char * pFileName, int fReadable ) +{ + gzFile pFile; + int * pLit, * pStop, i; + pFile = gzopen( pFileName, "wb" ); + if ( pFile == NULL ) + { + printf( "Cnf_WriteIntoFile(): Output file cannot be opened.\n" ); + return; + } + gzprintf( pFile, "c Result of efficient AIG-to-CNF conversion using package CNF\n" ); + gzprintf( pFile, "p cnf %d %d\n", p->nVars, p->nClauses ); + for ( i = 0; i < p->nClauses; i++ ) + { + for ( pLit = p->pClauses[i], pStop = p->pClauses[i+1]; pLit < pStop; pLit++ ) + gzprintf( pFile, "%d ", fReadable? Cnf_Lit2Var2(*pLit) : Cnf_Lit2Var(*pLit) ); + gzprintf( pFile, "0\n" ); + } + gzprintf( pFile, "\n" ); + gzclose( pFile ); +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataWriteIntoFile( Cnf_Dat_t * p, char * pFileName, int fReadable ) +{ + FILE * pFile; + int * pLit, * pStop, i; + if ( !strncmp(pFileName+strlen(pFileName)-3,".gz",3) ) + { + Cnf_DataWriteIntoFileGz( p, pFileName, fReadable ); + return; + } + pFile = fopen( pFileName, "w" ); + if ( pFile == NULL ) + { + printf( "Cnf_WriteIntoFile(): Output file cannot be opened.\n" ); + return; + } + fprintf( pFile, "c Result of efficient AIG-to-CNF conversion using package CNF\n" ); + fprintf( pFile, "p cnf %d %d\n", p->nVars, p->nClauses ); + for ( i = 0; i < p->nClauses; i++ ) + { + for ( pLit = p->pClauses[i], pStop = p->pClauses[i+1]; pLit < pStop; pLit++ ) + fprintf( pFile, "%d ", fReadable? Cnf_Lit2Var2(*pLit) : Cnf_Lit2Var(*pLit) ); + fprintf( pFile, "0\n" ); + } + fprintf( pFile, "\n" ); + fclose( pFile ); +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void * Cnf_DataWriteIntoSolverInt( void * pSolver, Cnf_Dat_t * p, int nFrames, int fInit ) +{ + sat_solver * pSat = (sat_solver *)pSolver; + int i, f, status; + assert( nFrames > 0 ); + assert( pSat ); +// pSat = sat_solver_new(); + sat_solver_setnvars( pSat, p->nVars * nFrames ); + for ( i = 0; i < p->nClauses; i++ ) + { + if ( !sat_solver_addclause( pSat, p->pClauses[i], p->pClauses[i+1] ) ) + { + sat_solver_delete( pSat ); + return NULL; + } + } + if ( nFrames > 1 ) + { + Aig_Obj_t * pObjLo, * pObjLi; + int nLitsAll, * pLits, Lits[2]; + nLitsAll = 2 * p->nVars; + pLits = p->pClauses[0]; + for ( f = 1; f < nFrames; f++ ) + { + // add equality of register inputs/outputs for different timeframes + Aig_ManForEachLiLoSeq( p->pMan, pObjLi, pObjLo, i ) + { + Lits[0] = (f-1)*nLitsAll + toLitCond( p->pVarNums[pObjLi->Id], 0 ); + Lits[1] = f *nLitsAll + toLitCond( p->pVarNums[pObjLo->Id], 1 ); + if ( !sat_solver_addclause( pSat, Lits, Lits + 2 ) ) + { + sat_solver_delete( pSat ); + return NULL; + } + Lits[0]++; + Lits[1]--; + if ( !sat_solver_addclause( pSat, Lits, Lits + 2 ) ) + { + sat_solver_delete( pSat ); + return NULL; + } + } + // add clauses for the next timeframe + for ( i = 0; i < p->nLiterals; i++ ) + pLits[i] += nLitsAll; + for ( i = 0; i < p->nClauses; i++ ) + { + if ( !sat_solver_addclause( pSat, p->pClauses[i], p->pClauses[i+1] ) ) + { + sat_solver_delete( pSat ); + return NULL; + } + } + } + // return literals to their original state + nLitsAll = (f-1) * nLitsAll; + for ( i = 0; i < p->nLiterals; i++ ) + pLits[i] -= nLitsAll; + } + if ( fInit ) + { + Aig_Obj_t * pObjLo; + int Lits[1]; + Aig_ManForEachLoSeq( p->pMan, pObjLo, i ) + { + Lits[0] = toLitCond( p->pVarNums[pObjLo->Id], 1 ); + if ( !sat_solver_addclause( pSat, Lits, Lits + 1 ) ) + { + sat_solver_delete( pSat ); + return NULL; + } + } + } + status = sat_solver_simplify(pSat); + if ( status == 0 ) + { + sat_solver_delete( pSat ); + return NULL; + } + return pSat; +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void * Cnf_DataWriteIntoSolver( Cnf_Dat_t * p, int nFrames, int fInit ) +{ + return Cnf_DataWriteIntoSolverInt( sat_solver_new(), p, nFrames, fInit ); +} + +/**Function************************************************************* + + Synopsis [Writes CNF into a file.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void * Cnf_DataWriteIntoSolver2( Cnf_Dat_t * p, int nFrames, int fInit ) +{ + sat_solver2 * pSat; + int i, f, status; + assert( nFrames > 0 ); + pSat = sat_solver2_new(); + sat_solver2_setnvars( pSat, p->nVars * nFrames ); + for ( i = 0; i < p->nClauses; i++ ) + { + if ( !sat_solver2_addclause( pSat, p->pClauses[i], p->pClauses[i+1] ) ) + { + sat_solver2_delete( pSat ); + return NULL; + } + } + if ( nFrames > 1 ) + { + Aig_Obj_t * pObjLo, * pObjLi; + int nLitsAll, * pLits, Lits[2]; + nLitsAll = 2 * p->nVars; + pLits = p->pClauses[0]; + for ( f = 1; f < nFrames; f++ ) + { + // add equality of register inputs/outputs for different timeframes + Aig_ManForEachLiLoSeq( p->pMan, pObjLi, pObjLo, i ) + { + Lits[0] = (f-1)*nLitsAll + toLitCond( p->pVarNums[pObjLi->Id], 0 ); + Lits[1] = f *nLitsAll + toLitCond( p->pVarNums[pObjLo->Id], 1 ); + if ( !sat_solver2_addclause( pSat, Lits, Lits + 2 ) ) + { + sat_solver2_delete( pSat ); + return NULL; + } + Lits[0]++; + Lits[1]--; + if ( !sat_solver2_addclause( pSat, Lits, Lits + 2 ) ) + { + sat_solver2_delete( pSat ); + return NULL; + } + } + // add clauses for the next timeframe + for ( i = 0; i < p->nLiterals; i++ ) + pLits[i] += nLitsAll; + for ( i = 0; i < p->nClauses; i++ ) + { + if ( !sat_solver2_addclause( pSat, p->pClauses[i], p->pClauses[i+1] ) ) + { + sat_solver2_delete( pSat ); + return NULL; + } + } + } + // return literals to their original state + nLitsAll = (f-1) * nLitsAll; + for ( i = 0; i < p->nLiterals; i++ ) + pLits[i] -= nLitsAll; + } + if ( fInit ) + { + Aig_Obj_t * pObjLo; + int Lits[1]; + Aig_ManForEachLoSeq( p->pMan, pObjLo, i ) + { + Lits[0] = toLitCond( p->pVarNums[pObjLo->Id], 1 ); + if ( !sat_solver2_addclause( pSat, Lits, Lits + 1 ) ) + { + sat_solver2_delete( pSat ); + return NULL; + } + } + } + status = sat_solver2_simplify(pSat); + if ( status == 0 ) + { + sat_solver2_delete( pSat ); + return NULL; + } + return pSat; +} + +/**Function************************************************************* + + Synopsis [Adds the OR-clause.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_DataWriteOrClause( void * p, Cnf_Dat_t * pCnf ) +{ + sat_solver * pSat = (sat_solver *)p; + Aig_Obj_t * pObj; + int i, * pLits; + pLits = ABC_ALLOC( int, Aig_ManPoNum(pCnf->pMan) ); + Aig_ManForEachPo( pCnf->pMan, pObj, i ) + pLits[i] = toLitCond( pCnf->pVarNums[pObj->Id], 0 ); + if ( !sat_solver_addclause( pSat, pLits, pLits + Aig_ManPoNum(pCnf->pMan) ) ) + { + ABC_FREE( pLits ); + return 0; + } + ABC_FREE( pLits ); + return 1; +} + +/**Function************************************************************* + + Synopsis [Adds the OR-clause.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_DataWriteOrClause2( void * p, Cnf_Dat_t * pCnf ) +{ + sat_solver2 * pSat = (sat_solver2 *)p; + Aig_Obj_t * pObj; + int i, * pLits; + pLits = ABC_ALLOC( int, Aig_ManPoNum(pCnf->pMan) ); + Aig_ManForEachPo( pCnf->pMan, pObj, i ) + pLits[i] = toLitCond( pCnf->pVarNums[pObj->Id], 0 ); + if ( !sat_solver2_addclause( pSat, pLits, pLits + Aig_ManPoNum(pCnf->pMan) ) ) + { + ABC_FREE( pLits ); + return 0; + } + ABC_FREE( pLits ); + return 1; +} + +/**Function************************************************************* + + Synopsis [Adds the OR-clause.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_DataWriteAndClauses( void * p, Cnf_Dat_t * pCnf ) +{ + sat_solver * pSat = (sat_solver *)p; + Aig_Obj_t * pObj; + int i, Lit; + Aig_ManForEachPo( pCnf->pMan, pObj, i ) + { + Lit = toLitCond( pCnf->pVarNums[pObj->Id], 0 ); + if ( !sat_solver_addclause( pSat, &Lit, &Lit+1 ) ) + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Transforms polarity of the internal veriables.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DataTranformPolarity( Cnf_Dat_t * pCnf, int fTransformPos ) +{ + Aig_Obj_t * pObj; + int * pVarToPol; + int i, iVar; + // create map from the variable number to its polarity + pVarToPol = ABC_CALLOC( int, pCnf->nVars ); + Aig_ManForEachObj( pCnf->pMan, pObj, i ) + { + if ( !fTransformPos && Aig_ObjIsPo(pObj) ) + continue; + if ( pCnf->pVarNums[pObj->Id] >= 0 ) + pVarToPol[ pCnf->pVarNums[pObj->Id] ] = pObj->fPhase; + } + // transform literals + for ( i = 0; i < pCnf->nLiterals; i++ ) + { + iVar = lit_var(pCnf->pClauses[0][i]); + assert( iVar < pCnf->nVars ); + if ( pVarToPol[iVar] ) + pCnf->pClauses[0][i] = lit_neg( pCnf->pClauses[0][i] ); + } + ABC_FREE( pVarToPol ); +} + +/**Function************************************************************* + + Synopsis [Adds constraints for the two-input AND-gate.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_DataAddXorClause( void * pSat, int iVarA, int iVarB, int iVarC ) +{ + lit Lits[3]; + assert( iVarA > 0 && iVarB > 0 && iVarC > 0 ); + + Lits[0] = toLitCond( iVarA, 1 ); + Lits[1] = toLitCond( iVarB, 1 ); + Lits[2] = toLitCond( iVarC, 1 ); + if ( !sat_solver_addclause( (sat_solver *)pSat, Lits, Lits + 3 ) ) + return 0; + + Lits[0] = toLitCond( iVarA, 1 ); + Lits[1] = toLitCond( iVarB, 0 ); + Lits[2] = toLitCond( iVarC, 0 ); + if ( !sat_solver_addclause( (sat_solver *)pSat, Lits, Lits + 3 ) ) + return 0; + + Lits[0] = toLitCond( iVarA, 0 ); + Lits[1] = toLitCond( iVarB, 1 ); + Lits[2] = toLitCond( iVarC, 0 ); + if ( !sat_solver_addclause( (sat_solver *)pSat, Lits, Lits + 3 ) ) + return 0; + + Lits[0] = toLitCond( iVarA, 0 ); + Lits[1] = toLitCond( iVarB, 0 ); + Lits[2] = toLitCond( iVarC, 1 ); + if ( !sat_solver_addclause( (sat_solver *)pSat, Lits, Lits + 3 ) ) + return 0; + + return 1; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfMap.c b/src/sat/cnf/cnfMap.c new file mode 100644 index 00000000..8907485e --- /dev/null +++ b/src/sat/cnf/cnfMap.c @@ -0,0 +1,362 @@ +/**CFile**************************************************************** + + FileName [cnfMap.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfMap.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Computes area flow of the cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutAssignAreaFlow( Cnf_Man_t * p, Dar_Cut_t * pCut, int * pAreaFlows ) +{ + Aig_Obj_t * pLeaf; + int i; + pCut->Value = 0; +// pCut->uSign = 100 * Cnf_CutSopCost( p, pCut ); + pCut->uSign = 10 * Cnf_CutSopCost( p, pCut ); + Dar_CutForEachLeaf( p->pManAig, pCut, pLeaf, i ) + { + pCut->Value += pLeaf->nRefs; + if ( !Aig_ObjIsNode(pLeaf) ) + continue; + assert( pLeaf->nRefs > 0 ); + pCut->uSign += pAreaFlows[pLeaf->Id] / (pLeaf->nRefs? pLeaf->nRefs : 1); + } +} + +/**Function************************************************************* + + Synopsis [Computes area flow of the supergate.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_CutSuperAreaFlow( Vec_Ptr_t * vSuper, int * pAreaFlows ) +{ + Aig_Obj_t * pLeaf; + int i, nAreaFlow; + nAreaFlow = 100 * (Vec_PtrSize(vSuper) + 1); + Vec_PtrForEachEntry( Aig_Obj_t *, vSuper, pLeaf, i ) + { + pLeaf = Aig_Regular(pLeaf); + if ( !Aig_ObjIsNode(pLeaf) ) + continue; + assert( pLeaf->nRefs > 0 ); + nAreaFlow += pAreaFlows[pLeaf->Id] / (pLeaf->nRefs? pLeaf->nRefs : 1); + } + return nAreaFlow; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_DeriveMapping( Cnf_Man_t * p ) +{ + Vec_Ptr_t * vSuper; + Aig_Obj_t * pObj; + Dar_Cut_t * pCut, * pCutBest; + int i, k, AreaFlow, * pAreaFlows; + // allocate area flows + pAreaFlows = ABC_ALLOC( int, Aig_ManObjNumMax(p->pManAig) ); + memset( pAreaFlows, 0, sizeof(int) * Aig_ManObjNumMax(p->pManAig) ); + // visit the nodes in the topological order and update their best cuts + vSuper = Vec_PtrAlloc( 100 ); + Aig_ManForEachNode( p->pManAig, pObj, i ) + { + // go through the cuts + pCutBest = NULL; + Dar_ObjForEachCut( pObj, pCut, k ) + { + pCut->fBest = 0; + if ( k == 0 ) + continue; + Cnf_CutAssignAreaFlow( p, pCut, pAreaFlows ); + if ( pCutBest == NULL || pCutBest->uSign > pCut->uSign || + (pCutBest->uSign == pCut->uSign && pCutBest->Value < pCut->Value) ) + pCutBest = pCut; + } + // check the big cut +// Aig_ObjCollectSuper( pObj, vSuper ); + // get the area flow of this cut +// AreaFlow = Cnf_CutSuperAreaFlow( vSuper, pAreaFlows ); + AreaFlow = ABC_INFINITY; + if ( AreaFlow >= (int)pCutBest->uSign ) + { + pAreaFlows[pObj->Id] = pCutBest->uSign; + pCutBest->fBest = 1; + } + else + { + pAreaFlows[pObj->Id] = AreaFlow; + pObj->fMarkB = 1; // mark the special node + } + } + Vec_PtrFree( vSuper ); + ABC_FREE( pAreaFlows ); + +/* + // compute the area of mapping + AreaFlow = 0; + Aig_ManForEachPo( p->pManAig, pObj, i ) + AreaFlow += Dar_ObjBestCut(Aig_ObjFanin0(pObj))->uSign / 100 / Aig_ObjFanin0(pObj)->nRefs; + printf( "Area of the network = %d.\n", AreaFlow ); +*/ +} + + + +#if 0 + +/**Function************************************************************* + + Synopsis [Computes area of the first level.] + + Description [The cut need to be derefed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Aig_CutDeref( Aig_Man_t * p, Dar_Cut_t * pCut ) +{ + Aig_Obj_t * pLeaf; + int i; + Dar_CutForEachLeaf( p, pCut, pLeaf, i ) + { + assert( pLeaf->nRefs > 0 ); + if ( --pLeaf->nRefs > 0 || !Aig_ObjIsAnd(pLeaf) ) + continue; + Aig_CutDeref( p, Aig_ObjBestCut(pLeaf) ); + } +} + +/**Function************************************************************* + + Synopsis [Computes area of the first level.] + + Description [The cut need to be derefed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Aig_CutRef( Aig_Man_t * p, Dar_Cut_t * pCut ) +{ + Aig_Obj_t * pLeaf; + int i, Area = pCut->Value; + Dar_CutForEachLeaf( p, pCut, pLeaf, i ) + { + assert( pLeaf->nRefs >= 0 ); + if ( pLeaf->nRefs++ > 0 || !Aig_ObjIsAnd(pLeaf) ) + continue; + Area += Aig_CutRef( p, Aig_ObjBestCut(pLeaf) ); + } + return Area; +} + +/**Function************************************************************* + + Synopsis [Computes exact area of the cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_CutArea( Aig_Man_t * p, Dar_Cut_t * pCut ) +{ + int Area; + Area = Aig_CutRef( p, pCut ); + Aig_CutDeref( p, pCut ); + return Area; +} + +/**Function************************************************************* + + Synopsis [Returns 1 if the second cut is better.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline int Cnf_CutCompare( Dar_Cut_t * pC0, Dar_Cut_t * pC1 ) +{ + if ( pC0->Area < pC1->Area - 0.0001 ) + return -1; + if ( pC0->Area > pC1->Area + 0.0001 ) // smaller area flow is better + return 1; +// if ( pC0->NoRefs < pC1->NoRefs ) +// return -1; +// if ( pC0->NoRefs > pC1->NoRefs ) // fewer non-referenced fanins is better +// return 1; +// if ( pC0->FanRefs / pC0->nLeaves > pC1->FanRefs / pC1->nLeaves ) +// return -1; +// if ( pC0->FanRefs / pC0->nLeaves < pC1->FanRefs / pC1->nLeaves ) +// return 1; // larger average fanin ref-counter is better +// return 0; + return 1; +} + +/**Function************************************************************* + + Synopsis [Returns the cut with the smallest area flow.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Dar_Cut_t * Cnf_ObjFindBestCut( Aig_Obj_t * pObj ) +{ + Dar_Cut_t * pCut, * pCutBest; + int i; + pCutBest = NULL; + Dar_ObjForEachCut( pObj, pCut, i ) + if ( pCutBest == NULL || Cnf_CutCompare(pCutBest, pCut) == 1 ) + pCutBest = pCut; + return pCutBest; +} + +/**Function************************************************************* + + Synopsis [Computes area flow of the cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_CutAssignArea( Cnf_Man_t * p, Dar_Cut_t * pCut ) +{ + Aig_Obj_t * pLeaf; + int i; + pCut->Area = (float)pCut->Cost; + pCut->NoRefs = 0; + pCut->FanRefs = 0; + Dar_CutForEachLeaf( p->pManAig, pCut, pLeaf, i ) + { + if ( !Aig_ObjIsNode(pLeaf) ) + continue; + if ( pLeaf->nRefs == 0 ) + { + pCut->Area += Aig_ObjBestCut(pLeaf)->Cost; + pCut->NoRefs++; + } + else + { + if ( pCut->FanRefs + pLeaf->nRefs > 15 ) + pCut->FanRefs = 15; + else + pCut->FanRefs += pLeaf->nRefs; + } + } +} + +/**Function************************************************************* + + Synopsis [Performs one round of "area recovery" using exact local area.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_ManMapForCnf( Cnf_Man_t * p ) +{ + Aig_Obj_t * pObj; + Dar_Cut_t * pCut, * pCutBest; + int i, k; + // visit the nodes in the topological order and update their best cuts + Aig_ManForEachNode( p->pManAig, pObj, i ) + { + // find the old best cut + pCutBest = Aig_ObjBestCut(pObj); + Dar_ObjClearBestCut(pCutBest); + // if the node is used, dereference its cut + if ( pObj->nRefs ) + Aig_CutDeref( p->pManAig, pCutBest ); + + // evaluate the cuts of this node + Dar_ObjForEachCut( pObj, pCut, k ) +// Cnf_CutAssignAreaFlow( p, pCut ); + pCut->Area = (float)Cnf_CutArea( p->pManAig, pCut ); + + // find the new best cut + pCutBest = Cnf_ObjFindBestCut(pObj); + Dar_ObjSetBestCut( pCutBest ); + // if the node is used, reference its cut + if ( pObj->nRefs ) + Aig_CutRef( p->pManAig, pCutBest ); + } + return 1; +} + +#endif + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfPost.c b/src/sat/cnf/cnfPost.c new file mode 100644 index 00000000..f7491889 --- /dev/null +++ b/src/sat/cnf/cnfPost.c @@ -0,0 +1,238 @@ +/**CFile**************************************************************** + + FileName [cnfPost.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfPost.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ManPostprocess_old( Cnf_Man_t * p ) +{ +// extern int Aig_ManLargeCutEval( Aig_Man_t * p, Aig_Obj_t * pRoot, Dar_Cut_t * pCutR, Dar_Cut_t * pCutL, int Leaf ); + int nNew, Gain, nGain = 0, nVars = 0; + + Aig_Obj_t * pObj, * pFan; + Dar_Cut_t * pCutBest, * pCut; + int i, k;//, a, b, Counter; + Aig_ManForEachObj( p->pManAig, pObj, i ) + { + if ( !Aig_ObjIsNode(pObj) ) + continue; + if ( pObj->nRefs == 0 ) + continue; +// pCutBest = Aig_ObjBestCut(pObj); + pCutBest = NULL; + + Dar_CutForEachLeaf( p->pManAig, pCutBest, pFan, k ) + { + if ( !Aig_ObjIsNode(pFan) ) + continue; + assert( pFan->nRefs != 0 ); + if ( pFan->nRefs != 1 ) + continue; +// pCut = Aig_ObjBestCut(pFan); + pCut = NULL; +/* + // find how many common variable they have + Counter = 0; + for ( a = 0; a < (int)pCut->nLeaves; a++ ) + { + for ( b = 0; b < (int)pCutBest->nLeaves; b++ ) + if ( pCut->pLeaves[a] == pCutBest->pLeaves[b] ) + break; + if ( b == (int)pCutBest->nLeaves ) + continue; + Counter++; + } + printf( "%d ", Counter ); +*/ + // find the new truth table after collapsing these two cuts + + +// nNew = Aig_ManLargeCutEval( p->pManAig, pObj, pCutBest, pCut, pFan->Id ); + nNew = 0; + + +// printf( "%d+%d=%d:%d(%d) ", pCutBest->Cost, pCut->Cost, +// pCutBest->Cost+pCut->Cost, nNew, pCutBest->Cost+pCut->Cost-nNew ); + + Gain = pCutBest->Value + pCut->Value - nNew; + if ( Gain > 0 ) + { + nGain += Gain; + nVars++; + } + } + } + printf( "Total gain = %d. Vars = %d.\n", nGain, nVars ); +} + +/**Function************************************************************* + + Synopsis [Transfers cuts of the mapped nodes into internal representation.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ManTransferCuts( Cnf_Man_t * p ) +{ + Aig_Obj_t * pObj; + int i; + Aig_MmFlexRestart( p->pMemCuts ); + Aig_ManForEachObj( p->pManAig, pObj, i ) + { + if ( Aig_ObjIsNode(pObj) && pObj->nRefs > 0 ) + pObj->pData = Cnf_CutCreate( p, pObj ); + else + pObj->pData = NULL; + } +} + +/**Function************************************************************* + + Synopsis [Transfers cuts of the mapped nodes into internal representation.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ManFreeCuts( Cnf_Man_t * p ) +{ + Aig_Obj_t * pObj; + int i; + Aig_ManForEachObj( p->pManAig, pObj, i ) + if ( pObj->pData ) + { + Cnf_CutFree( (Cnf_Cut_t *)pObj->pData ); + pObj->pData = NULL; + } +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_ManPostprocess( Cnf_Man_t * p ) +{ + Cnf_Cut_t * pCut, * pCutFan, * pCutRes; + Aig_Obj_t * pObj, * pFan; + int Order[16], Costs[16]; + int i, k, fChanges; + Aig_ManForEachNode( p->pManAig, pObj, i ) + { + if ( pObj->nRefs == 0 ) + continue; + pCut = Cnf_ObjBestCut(pObj); + + // sort fanins according to their size + Cnf_CutForEachLeaf( p->pManAig, pCut, pFan, k ) + { + Order[k] = k; + Costs[k] = Aig_ObjIsNode(pFan)? Cnf_ObjBestCut(pFan)->Cost : 0; + } + // sort the cuts by Weight + do { + int Temp; + fChanges = 0; + for ( k = 0; k < pCut->nFanins - 1; k++ ) + { + if ( Costs[Order[k]] <= Costs[Order[k+1]] ) + continue; + Temp = Order[k]; + Order[k] = Order[k+1]; + Order[k+1] = Temp; + fChanges = 1; + } + } while ( fChanges ); + + +// Cnf_CutForEachLeaf( p->pManAig, pCut, pFan, k ) + for ( k = 0; (k < (int)(pCut)->nFanins) && ((pFan) = Aig_ManObj(p->pManAig, (pCut)->pFanins[Order[k]])); k++ ) + { + if ( !Aig_ObjIsNode(pFan) ) + continue; + assert( pFan->nRefs != 0 ); + if ( pFan->nRefs != 1 ) + continue; + pCutFan = Cnf_ObjBestCut(pFan); + // try composing these two cuts +// Cnf_CutPrint( pCut ); + pCutRes = Cnf_CutCompose( p, pCut, pCutFan, pFan->Id ); +// Cnf_CutPrint( pCut ); +// printf( "\n" ); + // check if the cost if reduced + if ( pCutRes == NULL || pCutRes->Cost == 127 || pCutRes->Cost > pCut->Cost + pCutFan->Cost ) + { + if ( pCutRes ) + Cnf_CutFree( pCutRes ); + continue; + } + // update the cut + Cnf_ObjSetBestCut( pObj, pCutRes ); + Cnf_ObjSetBestCut( pFan, NULL ); + Cnf_CutUpdateRefs( p, pCut, pCutFan, pCutRes ); + assert( pFan->nRefs == 0 ); + Cnf_CutFree( pCut ); + Cnf_CutFree( pCutFan ); + break; + } + } +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfUtil.c b/src/sat/cnf/cnfUtil.c new file mode 100644 index 00000000..236b6bfa --- /dev/null +++ b/src/sat/cnf/cnfUtil.c @@ -0,0 +1,238 @@ +/**CFile**************************************************************** + + FileName [cnfUtil.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfUtil.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Computes area, references, and nodes used in the mapping.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Aig_ManScanMapping_rec( Cnf_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vMapped ) +{ + Aig_Obj_t * pLeaf; + Dar_Cut_t * pCutBest; + int aArea, i; + if ( pObj->nRefs++ || Aig_ObjIsPi(pObj) || Aig_ObjIsConst1(pObj) ) + return 0; + assert( Aig_ObjIsAnd(pObj) ); + // collect the node first to derive pre-order + if ( vMapped ) + Vec_PtrPush( vMapped, pObj ); + // visit the transitive fanin of the selected cut + if ( pObj->fMarkB ) + { + Vec_Ptr_t * vSuper = Vec_PtrAlloc( 100 ); + Aig_ObjCollectSuper( pObj, vSuper ); + aArea = Vec_PtrSize(vSuper) + 1; + Vec_PtrForEachEntry( Aig_Obj_t *, vSuper, pLeaf, i ) + aArea += Aig_ManScanMapping_rec( p, Aig_Regular(pLeaf), vMapped ); + Vec_PtrFree( vSuper ); + //////////////////////////// + pObj->fMarkB = 1; + } + else + { + pCutBest = Dar_ObjBestCut( pObj ); + aArea = Cnf_CutSopCost( p, pCutBest ); + Dar_CutForEachLeaf( p->pManAig, pCutBest, pLeaf, i ) + aArea += Aig_ManScanMapping_rec( p, pLeaf, vMapped ); + } + return aArea; +} + +/**Function************************************************************* + + Synopsis [Computes area, references, and nodes used in the mapping.] + + Description [Collects the nodes in reverse topological order.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Aig_ManScanMapping( Cnf_Man_t * p, int fCollect ) +{ + Vec_Ptr_t * vMapped = NULL; + Aig_Obj_t * pObj; + int i; + // clean all references + Aig_ManForEachObj( p->pManAig, pObj, i ) + pObj->nRefs = 0; + // allocate the array + if ( fCollect ) + vMapped = Vec_PtrAlloc( 1000 ); + // collect nodes reachable from POs in the DFS order through the best cuts + p->aArea = 0; + Aig_ManForEachPo( p->pManAig, pObj, i ) + p->aArea += Aig_ManScanMapping_rec( p, Aig_ObjFanin0(pObj), vMapped ); +// printf( "Variables = %6d. Clauses = %8d.\n", vMapped? Vec_PtrSize(vMapped) + Aig_ManPiNum(p->pManAig) + 1 : 0, p->aArea + 2 ); + return vMapped; +} + +/**Function************************************************************* + + Synopsis [Computes area, references, and nodes used in the mapping.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_ManScanMapping_rec( Cnf_Man_t * p, Aig_Obj_t * pObj, Vec_Ptr_t * vMapped, int fPreorder ) +{ + Aig_Obj_t * pLeaf; + Cnf_Cut_t * pCutBest; + int aArea, i; + if ( pObj->nRefs++ || Aig_ObjIsPi(pObj) || Aig_ObjIsConst1(pObj) ) + return 0; + assert( Aig_ObjIsAnd(pObj) ); + assert( pObj->pData != NULL ); + // add the node to the mapping + if ( vMapped && fPreorder ) + Vec_PtrPush( vMapped, pObj ); + // visit the transitive fanin of the selected cut + if ( pObj->fMarkB ) + { + Vec_Ptr_t * vSuper = Vec_PtrAlloc( 100 ); + Aig_ObjCollectSuper( pObj, vSuper ); + aArea = Vec_PtrSize(vSuper) + 1; + Vec_PtrForEachEntry( Aig_Obj_t *, vSuper, pLeaf, i ) + aArea += Cnf_ManScanMapping_rec( p, Aig_Regular(pLeaf), vMapped, fPreorder ); + Vec_PtrFree( vSuper ); + //////////////////////////// + pObj->fMarkB = 1; + } + else + { + pCutBest = (Cnf_Cut_t *)pObj->pData; +// assert( pCutBest->nFanins > 0 ); + assert( pCutBest->Cost < 127 ); + aArea = pCutBest->Cost; + Cnf_CutForEachLeaf( p->pManAig, pCutBest, pLeaf, i ) + aArea += Cnf_ManScanMapping_rec( p, pLeaf, vMapped, fPreorder ); + } + // add the node to the mapping + if ( vMapped && !fPreorder ) + Vec_PtrPush( vMapped, pObj ); + return aArea; +} + +/**Function************************************************************* + + Synopsis [Computes area, references, and nodes used in the mapping.] + + Description [Collects the nodes in reverse topological order.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Cnf_ManScanMapping( Cnf_Man_t * p, int fCollect, int fPreorder ) +{ + Vec_Ptr_t * vMapped = NULL; + Aig_Obj_t * pObj; + int i; + // clean all references + Aig_ManForEachObj( p->pManAig, pObj, i ) + pObj->nRefs = 0; + // allocate the array + if ( fCollect ) + vMapped = Vec_PtrAlloc( 1000 ); + // collect nodes reachable from POs in the DFS order through the best cuts + p->aArea = 0; + Aig_ManForEachPo( p->pManAig, pObj, i ) + p->aArea += Cnf_ManScanMapping_rec( p, Aig_ObjFanin0(pObj), vMapped, fPreorder ); +// printf( "Variables = %6d. Clauses = %8d.\n", vMapped? Vec_PtrSize(vMapped) + Aig_ManPiNum(p->pManAig) + 1 : 0, p->aArea + 2 ); + return vMapped; +} + +/**Function************************************************************* + + Synopsis [Returns the array of CI IDs.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Int_t * Cnf_DataCollectCiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p ) +{ + Vec_Int_t * vCiIds; + Aig_Obj_t * pObj; + int i; + vCiIds = Vec_IntAlloc( Aig_ManPiNum(p) ); + Aig_ManForEachPi( p, pObj, i ) + Vec_IntPush( vCiIds, pCnf->pVarNums[pObj->Id] ); + return vCiIds; +} + +/**Function************************************************************* + + Synopsis [Returns the array of CI IDs.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Int_t * Cnf_DataCollectCoSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p ) +{ + Vec_Int_t * vCoIds; + Aig_Obj_t * pObj; + int i; + vCoIds = Vec_IntAlloc( Aig_ManPoNum(p) ); + Aig_ManForEachPo( p, pObj, i ) + Vec_IntPush( vCoIds, pCnf->pVarNums[pObj->Id] ); + return vCoIds; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/cnf/cnfWrite.c b/src/sat/cnf/cnfWrite.c new file mode 100644 index 00000000..54c28967 --- /dev/null +++ b/src/sat/cnf/cnfWrite.c @@ -0,0 +1,806 @@ +/**CFile**************************************************************** + + FileName [cnfWrite.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [AIG-to-CNF conversion.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - April 28, 2007.] + + Revision [$Id: cnfWrite.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "cnf.h" + +ABC_NAMESPACE_IMPL_START + + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Derives CNF mapping.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Int_t * Cnf_ManWriteCnfMapping( Cnf_Man_t * p, Vec_Ptr_t * vMapped ) +{ + Vec_Int_t * vResult; + Aig_Obj_t * pObj; + Cnf_Cut_t * pCut; + int i, k, nOffset; + nOffset = Aig_ManObjNumMax(p->pManAig); + vResult = Vec_IntStart( nOffset ); + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + { + assert( Aig_ObjIsNode(pObj) ); + pCut = Cnf_ObjBestCut( pObj ); + assert( pCut->nFanins < 5 ); + Vec_IntWriteEntry( vResult, Aig_ObjId(pObj), nOffset ); + Vec_IntPush( vResult, *Cnf_CutTruth(pCut) ); + for ( k = 0; k < pCut->nFanins; k++ ) + Vec_IntPush( vResult, pCut->pFanins[k] ); + for ( ; k < 4; k++ ) + Vec_IntPush( vResult, -1 ); + nOffset += 5; + } + return vResult; +} + + + +/**Function************************************************************* + + Synopsis [Writes the cover into the array.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Cnf_SopConvertToVector( char * pSop, int nCubes, Vec_Int_t * vCover ) +{ + int Lits[4], Cube, iCube, i, b; + Vec_IntClear( vCover ); + for ( i = 0; i < nCubes; i++ ) + { + Cube = pSop[i]; + for ( b = 0; b < 4; b++ ) + { + if ( Cube % 3 == 0 ) + Lits[b] = 1; + else if ( Cube % 3 == 1 ) + Lits[b] = 2; + else + Lits[b] = 0; + Cube = Cube / 3; + } + iCube = 0; + for ( b = 0; b < 4; b++ ) + iCube = (iCube << 2) | Lits[b]; + Vec_IntPush( vCover, iCube ); + } +} + +/**Function************************************************************* + + Synopsis [Returns the number of literals in the SOP.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_SopCountLiterals( char * pSop, int nCubes ) +{ + int nLits = 0, Cube, i, b; + for ( i = 0; i < nCubes; i++ ) + { + Cube = pSop[i]; + for ( b = 0; b < 4; b++ ) + { + if ( Cube % 3 != 2 ) + nLits++; + Cube = Cube / 3; + } + } + return nLits; +} + +/**Function************************************************************* + + Synopsis [Returns the number of literals in the SOP.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_IsopCountLiterals( Vec_Int_t * vIsop, int nVars ) +{ + int nLits = 0, Cube, i, b; + Vec_IntForEachEntry( vIsop, Cube, i ) + { + for ( b = 0; b < nVars; b++ ) + { + if ( (Cube & 3) == 1 || (Cube & 3) == 2 ) + nLits++; + Cube >>= 2; + } + } + return nLits; +} + +/**Function************************************************************* + + Synopsis [Writes the cube and returns the number of literals in it.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Cnf_IsopWriteCube( int Cube, int nVars, int * pVars, int * pLiterals ) +{ + int nLits = nVars, b; + for ( b = 0; b < nVars; b++ ) + { + if ( (Cube & 3) == 1 ) // value 0 --> write positive literal + *pLiterals++ = 2 * pVars[b]; + else if ( (Cube & 3) == 2 ) // value 1 --> write negative literal + *pLiterals++ = 2 * pVars[b] + 1; + else + nLits--; + Cube >>= 2; + } + return nLits; +} + +/**Function************************************************************* + + Synopsis [Derives CNF for the mapping.] + + Description [The last argument shows the number of last outputs + of the manager, which will not be converted into clauses but the + new variables for which will be introduced.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_ManWriteCnf( Cnf_Man_t * p, Vec_Ptr_t * vMapped, int nOutputs ) +{ + int fChangeVariableOrder = 0; // should be set to 0 to improve performance + Aig_Obj_t * pObj; + Cnf_Dat_t * pCnf; + Cnf_Cut_t * pCut; + Vec_Int_t * vCover, * vSopTemp; + int OutVar, PoVar, pVars[32], * pLits, ** pClas; + unsigned uTruth; + int i, k, nLiterals, nClauses, Cube, Number; + + // count the number of literals and clauses + nLiterals = 1 + Aig_ManPoNum( p->pManAig ) + 3 * nOutputs; + nClauses = 1 + Aig_ManPoNum( p->pManAig ) + nOutputs; + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + { + assert( Aig_ObjIsNode(pObj) ); + pCut = Cnf_ObjBestCut( pObj ); + + // positive polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & *Cnf_CutTruth(pCut); + nLiterals += Cnf_SopCountLiterals( p->pSops[uTruth], p->pSopSizes[uTruth] ) + p->pSopSizes[uTruth]; + assert( p->pSopSizes[uTruth] >= 0 ); + nClauses += p->pSopSizes[uTruth]; + } + else + { + nLiterals += Cnf_IsopCountLiterals( pCut->vIsop[1], pCut->nFanins ) + Vec_IntSize(pCut->vIsop[1]); + nClauses += Vec_IntSize(pCut->vIsop[1]); + } + // negative polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & ~*Cnf_CutTruth(pCut); + nLiterals += Cnf_SopCountLiterals( p->pSops[uTruth], p->pSopSizes[uTruth] ) + p->pSopSizes[uTruth]; + assert( p->pSopSizes[uTruth] >= 0 ); + nClauses += p->pSopSizes[uTruth]; + } + else + { + nLiterals += Cnf_IsopCountLiterals( pCut->vIsop[0], pCut->nFanins ) + Vec_IntSize(pCut->vIsop[0]); + nClauses += Vec_IntSize(pCut->vIsop[0]); + } +//printf( "%d ", nClauses-(1 + Aig_ManPoNum( p->pManAig )) ); + } +//printf( "\n" ); + + // allocate CNF + pCnf = ABC_CALLOC( Cnf_Dat_t, 1 ); + pCnf->pMan = p->pManAig; + pCnf->nLiterals = nLiterals; + pCnf->nClauses = nClauses; + pCnf->pClauses = ABC_ALLOC( int *, nClauses + 1 ); + pCnf->pClauses[0] = ABC_ALLOC( int, nLiterals ); + pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals; + // create room for variable numbers + pCnf->pVarNums = ABC_ALLOC( int, Aig_ManObjNumMax(p->pManAig) ); +// memset( pCnf->pVarNums, 0xff, sizeof(int) * Aig_ManObjNumMax(p->pManAig) ); + for ( i = 0; i < Aig_ManObjNumMax(p->pManAig); i++ ) + pCnf->pVarNums[i] = -1; + + if ( !fChangeVariableOrder ) + { + // assign variables to the last (nOutputs) POs + Number = 1; + if ( nOutputs ) + { + if ( Aig_ManRegNum(p->pManAig) == 0 ) + { + assert( nOutputs == Aig_ManPoNum(p->pManAig) ); + Aig_ManForEachPo( p->pManAig, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + } + else + { + assert( nOutputs == Aig_ManRegNum(p->pManAig) ); + Aig_ManForEachLiSeq( p->pManAig, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + } + } + // assign variables to the internal nodes + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + // assign variables to the PIs and constant node + Aig_ManForEachPi( p->pManAig, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + pCnf->pVarNums[Aig_ManConst1(p->pManAig)->Id] = Number++; + pCnf->nVars = Number; + } + else + { + // assign variables to the last (nOutputs) POs + Number = Aig_ManObjNumMax(p->pManAig) + 1; + pCnf->nVars = Number + 1; + if ( nOutputs ) + { + if ( Aig_ManRegNum(p->pManAig) == 0 ) + { + assert( nOutputs == Aig_ManPoNum(p->pManAig) ); + Aig_ManForEachPo( p->pManAig, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number--; + } + else + { + assert( nOutputs == Aig_ManRegNum(p->pManAig) ); + Aig_ManForEachLiSeq( p->pManAig, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number--; + } + } + // assign variables to the internal nodes + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number--; + // assign variables to the PIs and constant node + Aig_ManForEachPi( p->pManAig, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number--; + pCnf->pVarNums[Aig_ManConst1(p->pManAig)->Id] = Number--; + assert( Number >= 0 ); + } + + // assign the clauses + vSopTemp = Vec_IntAlloc( 1 << 16 ); + pLits = pCnf->pClauses[0]; + pClas = pCnf->pClauses; + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + { + pCut = Cnf_ObjBestCut( pObj ); + + // save variables of this cut + OutVar = pCnf->pVarNums[ pObj->Id ]; + for ( k = 0; k < (int)pCut->nFanins; k++ ) + { + pVars[k] = pCnf->pVarNums[ pCut->pFanins[k] ]; + assert( pVars[k] <= Aig_ManObjNumMax(p->pManAig) ); + } + + // positive polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & *Cnf_CutTruth(pCut); + Cnf_SopConvertToVector( p->pSops[uTruth], p->pSopSizes[uTruth], vSopTemp ); + vCover = vSopTemp; + } + else + vCover = pCut->vIsop[1]; + Vec_IntForEachEntry( vCover, Cube, k ) + { + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + pLits += Cnf_IsopWriteCube( Cube, pCut->nFanins, pVars, pLits ); + } + + // negative polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & ~*Cnf_CutTruth(pCut); + Cnf_SopConvertToVector( p->pSops[uTruth], p->pSopSizes[uTruth], vSopTemp ); + vCover = vSopTemp; + } + else + vCover = pCut->vIsop[0]; + Vec_IntForEachEntry( vCover, Cube, k ) + { + *pClas++ = pLits; + *pLits++ = 2 * OutVar + 1; + pLits += Cnf_IsopWriteCube( Cube, pCut->nFanins, pVars, pLits ); + } + } + Vec_IntFree( vSopTemp ); + + // write the constant literal + OutVar = pCnf->pVarNums[ Aig_ManConst1(p->pManAig)->Id ]; + assert( OutVar <= Aig_ManObjNumMax(p->pManAig) ); + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + + // write the output literals + Aig_ManForEachPo( p->pManAig, pObj, i ) + { + OutVar = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ]; + if ( i < Aig_ManPoNum(p->pManAig) - nOutputs ) + { + *pClas++ = pLits; + *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); + } + else + { + PoVar = pCnf->pVarNums[ pObj->Id ]; + // first clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar; + *pLits++ = 2 * OutVar + !Aig_ObjFaninC0(pObj); + // second clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar + 1; + *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); + } + } + + // verify that the correct number of literals and clauses was written + assert( pLits - pCnf->pClauses[0] == nLiterals ); + assert( pClas - pCnf->pClauses == nClauses ); +//Cnf_DataPrint( pCnf, 1 ); + return pCnf; +} + + +/**Function************************************************************* + + Synopsis [Derives CNF for the mapping.] + + Description [Derives CNF with obj IDs as SAT vars and mapping of + objects into clauses (pObj2Clause and pObj2Count).] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_ManWriteCnfOther( Cnf_Man_t * p, Vec_Ptr_t * vMapped ) +{ + Aig_Obj_t * pObj; + Cnf_Dat_t * pCnf; + Cnf_Cut_t * pCut; + Vec_Int_t * vCover, * vSopTemp; + int OutVar, PoVar, pVars[32], * pLits, ** pClas; + unsigned uTruth; + int i, k, nLiterals, nClauses, Cube; + + // count the number of literals and clauses + nLiterals = 1 + 4 * Aig_ManPoNum( p->pManAig ); + nClauses = 1 + 2 * Aig_ManPoNum( p->pManAig ); + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + { + assert( Aig_ObjIsNode(pObj) ); + pCut = Cnf_ObjBestCut( pObj ); + // positive polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & *Cnf_CutTruth(pCut); + nLiterals += Cnf_SopCountLiterals( p->pSops[uTruth], p->pSopSizes[uTruth] ) + p->pSopSizes[uTruth]; + assert( p->pSopSizes[uTruth] >= 0 ); + nClauses += p->pSopSizes[uTruth]; + } + else + { + nLiterals += Cnf_IsopCountLiterals( pCut->vIsop[1], pCut->nFanins ) + Vec_IntSize(pCut->vIsop[1]); + nClauses += Vec_IntSize(pCut->vIsop[1]); + } + // negative polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & ~*Cnf_CutTruth(pCut); + nLiterals += Cnf_SopCountLiterals( p->pSops[uTruth], p->pSopSizes[uTruth] ) + p->pSopSizes[uTruth]; + assert( p->pSopSizes[uTruth] >= 0 ); + nClauses += p->pSopSizes[uTruth]; + } + else + { + nLiterals += Cnf_IsopCountLiterals( pCut->vIsop[0], pCut->nFanins ) + Vec_IntSize(pCut->vIsop[0]); + nClauses += Vec_IntSize(pCut->vIsop[0]); + } + } + + // allocate CNF + pCnf = ABC_CALLOC( Cnf_Dat_t, 1 ); + pCnf->pMan = p->pManAig; + pCnf->nLiterals = nLiterals; + pCnf->nClauses = nClauses; + pCnf->pClauses = ABC_ALLOC( int *, nClauses + 1 ); + pCnf->pClauses[0] = ABC_ALLOC( int, nLiterals ); + pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals; + // create room for variable numbers + pCnf->pObj2Clause = ABC_ALLOC( int, Aig_ManObjNumMax(p->pManAig) ); + pCnf->pObj2Count = ABC_ALLOC( int, Aig_ManObjNumMax(p->pManAig) ); + for ( i = 0; i < Aig_ManObjNumMax(p->pManAig); i++ ) + pCnf->pObj2Clause[i] = pCnf->pObj2Count[i] = -1; + pCnf->nVars = Aig_ManObjNumMax(p->pManAig); + + // clear the PI counters + Aig_ManForEachPi( p->pManAig, pObj, i ) + pCnf->pObj2Count[pObj->Id] = 0; + + // assign the clauses + vSopTemp = Vec_IntAlloc( 1 << 16 ); + pLits = pCnf->pClauses[0]; + pClas = pCnf->pClauses; + Vec_PtrForEachEntry( Aig_Obj_t *, vMapped, pObj, i ) + { + // remember the starting clause + pCnf->pObj2Clause[pObj->Id] = pClas - pCnf->pClauses; + pCnf->pObj2Count[pObj->Id] = 0; + + // get the best cut + pCut = Cnf_ObjBestCut( pObj ); + // save variables of this cut + OutVar = pObj->Id; + for ( k = 0; k < (int)pCut->nFanins; k++ ) + { + pVars[k] = pCut->pFanins[k]; + assert( pVars[k] <= Aig_ManObjNumMax(p->pManAig) ); + } + + // positive polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & *Cnf_CutTruth(pCut); + Cnf_SopConvertToVector( p->pSops[uTruth], p->pSopSizes[uTruth], vSopTemp ); + vCover = vSopTemp; + } + else + vCover = pCut->vIsop[1]; + Vec_IntForEachEntry( vCover, Cube, k ) + { + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + pLits += Cnf_IsopWriteCube( Cube, pCut->nFanins, pVars, pLits ); + } + pCnf->pObj2Count[pObj->Id] += Vec_IntSize(vCover); + + // negative polarity of the cut + if ( pCut->nFanins < 5 ) + { + uTruth = 0xFFFF & ~*Cnf_CutTruth(pCut); + Cnf_SopConvertToVector( p->pSops[uTruth], p->pSopSizes[uTruth], vSopTemp ); + vCover = vSopTemp; + } + else + vCover = pCut->vIsop[0]; + Vec_IntForEachEntry( vCover, Cube, k ) + { + *pClas++ = pLits; + *pLits++ = 2 * OutVar + 1; + pLits += Cnf_IsopWriteCube( Cube, pCut->nFanins, pVars, pLits ); + } + pCnf->pObj2Count[pObj->Id] += Vec_IntSize(vCover); + } + Vec_IntFree( vSopTemp ); + + // write the output literals + Aig_ManForEachPo( p->pManAig, pObj, i ) + { + // remember the starting clause + pCnf->pObj2Clause[pObj->Id] = pClas - pCnf->pClauses; + pCnf->pObj2Count[pObj->Id] = 2; + // get variables + OutVar = Aig_ObjFanin0(pObj)->Id; + PoVar = pObj->Id; + // first clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar; + *pLits++ = 2 * OutVar + !Aig_ObjFaninC0(pObj); + // second clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar + 1; + *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); + } + + // remember the starting clause + pCnf->pObj2Clause[Aig_ManConst1(p->pManAig)->Id] = pClas - pCnf->pClauses; + pCnf->pObj2Count[Aig_ManConst1(p->pManAig)->Id] = 1; + // write the constant literal + OutVar = Aig_ManConst1(p->pManAig)->Id; + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + + // verify that the correct number of literals and clauses was written + assert( pLits - pCnf->pClauses[0] == nLiterals ); + assert( pClas - pCnf->pClauses == nClauses ); +//Cnf_DataPrint( pCnf, 1 ); + return pCnf; +} + + +/**Function************************************************************* + + Synopsis [Derives a simple CNF for the AIG.] + + Description [The last argument lists the number of last outputs + of the manager, which will not be converted into clauses. + New variables will be introduced for these outputs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DeriveSimple( Aig_Man_t * p, int nOutputs ) +{ + Aig_Obj_t * pObj; + Cnf_Dat_t * pCnf; + int OutVar, PoVar, pVars[32], * pLits, ** pClas; + int i, nLiterals, nClauses, Number; + + // count the number of literals and clauses + nLiterals = 1 + 7 * Aig_ManNodeNum(p) + Aig_ManPoNum( p ) + 3 * nOutputs; + nClauses = 1 + 3 * Aig_ManNodeNum(p) + Aig_ManPoNum( p ) + nOutputs; + + // allocate CNF + pCnf = ABC_ALLOC( Cnf_Dat_t, 1 ); + memset( pCnf, 0, sizeof(Cnf_Dat_t) ); + pCnf->pMan = p; + pCnf->nLiterals = nLiterals; + pCnf->nClauses = nClauses; + pCnf->pClauses = ABC_ALLOC( int *, nClauses + 1 ); + pCnf->pClauses[0] = ABC_ALLOC( int, nLiterals ); + pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals; + + // create room for variable numbers + pCnf->pVarNums = ABC_ALLOC( int, Aig_ManObjNumMax(p) ); +// memset( pCnf->pVarNums, 0xff, sizeof(int) * Aig_ManObjNumMax(p) ); + for ( i = 0; i < Aig_ManObjNumMax(p); i++ ) + pCnf->pVarNums[i] = -1; + // assign variables to the last (nOutputs) POs + Number = 1; + if ( nOutputs ) + { +// assert( nOutputs == Aig_ManRegNum(p) ); +// Aig_ManForEachLiSeq( p, pObj, i ) +// pCnf->pVarNums[pObj->Id] = Number++; + Aig_ManForEachPo( p, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + } + // assign variables to the internal nodes + Aig_ManForEachNode( p, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + // assign variables to the PIs and constant node + Aig_ManForEachPi( p, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + pCnf->pVarNums[Aig_ManConst1(p)->Id] = Number++; + pCnf->nVars = Number; +/* + // print CNF numbers + printf( "SAT numbers of each node:\n" ); + Aig_ManForEachObj( p, pObj, i ) + printf( "%d=%d ", pObj->Id, pCnf->pVarNums[pObj->Id] ); + printf( "\n" ); +*/ + // assign the clauses + pLits = pCnf->pClauses[0]; + pClas = pCnf->pClauses; + Aig_ManForEachNode( p, pObj, i ) + { + OutVar = pCnf->pVarNums[ pObj->Id ]; + pVars[0] = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ]; + pVars[1] = pCnf->pVarNums[ Aig_ObjFanin1(pObj)->Id ]; + + // positive phase + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + *pLits++ = 2 * pVars[0] + !Aig_ObjFaninC0(pObj); + *pLits++ = 2 * pVars[1] + !Aig_ObjFaninC1(pObj); + // negative phase + *pClas++ = pLits; + *pLits++ = 2 * OutVar + 1; + *pLits++ = 2 * pVars[0] + Aig_ObjFaninC0(pObj); + *pClas++ = pLits; + *pLits++ = 2 * OutVar + 1; + *pLits++ = 2 * pVars[1] + Aig_ObjFaninC1(pObj); + } + + // write the constant literal + OutVar = pCnf->pVarNums[ Aig_ManConst1(p)->Id ]; + assert( OutVar <= Aig_ManObjNumMax(p) ); + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + + // write the output literals + Aig_ManForEachPo( p, pObj, i ) + { + OutVar = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ]; + if ( i < Aig_ManPoNum(p) - nOutputs ) + { + *pClas++ = pLits; + *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); + } + else + { + PoVar = pCnf->pVarNums[ pObj->Id ]; + // first clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar; + *pLits++ = 2 * OutVar + !Aig_ObjFaninC0(pObj); + // second clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar + 1; + *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); + } + } + + // verify that the correct number of literals and clauses was written + assert( pLits - pCnf->pClauses[0] == nLiterals ); + assert( pClas - pCnf->pClauses == nClauses ); + return pCnf; +} + +/**Function************************************************************* + + Synopsis [Derives a simple CNF for backward retiming computation.] + + Description [The last argument shows the number of last outputs + of the manager, which will not be converted into clauses. + New variables will be introduced for these outputs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cnf_Dat_t * Cnf_DeriveSimpleForRetiming( Aig_Man_t * p ) +{ + Aig_Obj_t * pObj; + Cnf_Dat_t * pCnf; + int OutVar, PoVar, pVars[32], * pLits, ** pClas; + int i, nLiterals, nClauses, Number; + + // count the number of literals and clauses + nLiterals = 1 + 7 * Aig_ManNodeNum(p) + 5 * Aig_ManPoNum(p); + nClauses = 1 + 3 * Aig_ManNodeNum(p) + 3 * Aig_ManPoNum(p); + + // allocate CNF + pCnf = ABC_ALLOC( Cnf_Dat_t, 1 ); + memset( pCnf, 0, sizeof(Cnf_Dat_t) ); + pCnf->pMan = p; + pCnf->nLiterals = nLiterals; + pCnf->nClauses = nClauses; + pCnf->pClauses = ABC_ALLOC( int *, nClauses + 1 ); + pCnf->pClauses[0] = ABC_ALLOC( int, nLiterals ); + pCnf->pClauses[nClauses] = pCnf->pClauses[0] + nLiterals; + + // create room for variable numbers + pCnf->pVarNums = ABC_ALLOC( int, Aig_ManObjNumMax(p) ); +// memset( pCnf->pVarNums, 0xff, sizeof(int) * Aig_ManObjNumMax(p) ); + for ( i = 0; i < Aig_ManObjNumMax(p); i++ ) + pCnf->pVarNums[i] = -1; + // assign variables to the last (nOutputs) POs + Number = 1; + Aig_ManForEachPo( p, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + // assign variables to the internal nodes + Aig_ManForEachNode( p, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + // assign variables to the PIs and constant node + Aig_ManForEachPi( p, pObj, i ) + pCnf->pVarNums[pObj->Id] = Number++; + pCnf->pVarNums[Aig_ManConst1(p)->Id] = Number++; + pCnf->nVars = Number; + // assign the clauses + pLits = pCnf->pClauses[0]; + pClas = pCnf->pClauses; + Aig_ManForEachNode( p, pObj, i ) + { + OutVar = pCnf->pVarNums[ pObj->Id ]; + pVars[0] = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ]; + pVars[1] = pCnf->pVarNums[ Aig_ObjFanin1(pObj)->Id ]; + + // positive phase + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + *pLits++ = 2 * pVars[0] + !Aig_ObjFaninC0(pObj); + *pLits++ = 2 * pVars[1] + !Aig_ObjFaninC1(pObj); + // negative phase + *pClas++ = pLits; + *pLits++ = 2 * OutVar + 1; + *pLits++ = 2 * pVars[0] + Aig_ObjFaninC0(pObj); + *pClas++ = pLits; + *pLits++ = 2 * OutVar + 1; + *pLits++ = 2 * pVars[1] + Aig_ObjFaninC1(pObj); + } + + // write the constant literal + OutVar = pCnf->pVarNums[ Aig_ManConst1(p)->Id ]; + assert( OutVar <= Aig_ManObjNumMax(p) ); + *pClas++ = pLits; + *pLits++ = 2 * OutVar; + + // write the output literals + Aig_ManForEachPo( p, pObj, i ) + { + OutVar = pCnf->pVarNums[ Aig_ObjFanin0(pObj)->Id ]; + PoVar = pCnf->pVarNums[ pObj->Id ]; + // first clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar; + *pLits++ = 2 * OutVar + !Aig_ObjFaninC0(pObj); + // second clause + *pClas++ = pLits; + *pLits++ = 2 * PoVar + 1; + *pLits++ = 2 * OutVar + Aig_ObjFaninC0(pObj); + // final clause (init-state is always 0 -> set the output to 0) + *pClas++ = pLits; + *pLits++ = 2 * PoVar + 1; + } + + // verify that the correct number of literals and clauses was written + assert( pLits - pCnf->pClauses[0] == nLiterals ); + assert( pClas - pCnf->pClauses == nClauses ); + return pCnf; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + +ABC_NAMESPACE_IMPL_END + diff --git a/src/sat/pdr/pdr.c b/src/sat/cnf/cnf_.c index 6bdf75b5..acf75093 100644 --- a/src/sat/pdr/pdr.c +++ b/src/sat/cnf/cnf_.c @@ -1,10 +1,10 @@ /**CFile**************************************************************** - FileName [pdr.c] + FileName [cnf_.c] SystemName [ABC: Logic synthesis and verification system.] - PackageName [Netlist representation.] + PackageName [AIG-to-CNF conversion.] Synopsis [] @@ -12,13 +12,13 @@ Affiliation [UC Berkeley] - Date [Ver. 1.0. Started - November 20, 2010.] + Date [Ver. 1.0. Started - April 28, 2007.] - Revision [$Id: pdr.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] + Revision [$Id: cnf_.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $] ***********************************************************************/ -#include "pdrInt.h" +#include "cnf.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/cnf/module.make b/src/sat/cnf/module.make new file mode 100644 index 00000000..880e9662 --- /dev/null +++ b/src/sat/cnf/module.make @@ -0,0 +1,9 @@ +SRC += src/sat/cnf/cnfCore.c \ + src/sat/cnf/cnfCut.c \ + src/sat/cnf/cnfData.c \ + src/sat/cnf/cnfFast.c \ + src/sat/cnf/cnfMan.c \ + src/sat/cnf/cnfMap.c \ + src/sat/cnf/cnfPost.c \ + src/sat/cnf/cnfUtil.c \ + src/sat/cnf/cnfWrite.c diff --git a/src/sat/csat/csat_apis.c b/src/sat/csat/csat_apis.c index 78ed2601..582dc1e7 100644 --- a/src/sat/csat/csat_apis.c +++ b/src/sat/csat/csat_apis.c @@ -16,11 +16,11 @@ ***********************************************************************/ -#include "abc.h" -#include "fraig.h" +#include "src/base/abc/abc.h" +#include "src/proof/fraig/fraig.h" #include "csat_apis.h" -#include "stmm.h" -#include "main.h" +#include "src/misc/st/stmm.h" +#include "src/base/main/main.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/csat/csat_apis.h b/src/sat/csat/csat_apis.h index a6c1b18a..476e8c2c 100644 --- a/src/sat/csat/csat_apis.h +++ b/src/sat/csat/csat_apis.h @@ -16,8 +16,8 @@ ***********************************************************************/ -#ifndef __ABC_APIS_H__ -#define __ABC_APIS_H__ +#ifndef ABC__sat__csat__csat_apis_h +#define ABC__sat__csat__csat_apis_h //////////////////////////////////////////////////////////////////////// diff --git a/src/sat/fraig/fraig.h b/src/sat/fraig/fraig.h deleted file mode 100644 index 2b499967..00000000 --- a/src/sat/fraig/fraig.h +++ /dev/null @@ -1,260 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraig.h] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [External declarations of the FRAIG package.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraig.h,v 1.18 2005/07/08 01:01:30 alanmi Exp $] - -***********************************************************************/ - -#ifndef __FRAIG_H__ -#define __FRAIG_H__ - - -//////////////////////////////////////////////////////////////////////// -/// INCLUDES /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// PARAMETERS /// -//////////////////////////////////////////////////////////////////////// - - - -ABC_NAMESPACE_HEADER_START - - -//////////////////////////////////////////////////////////////////////// -/// STRUCTURE DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -typedef struct Fraig_ManStruct_t_ Fraig_Man_t; -typedef struct Fraig_NodeStruct_t_ Fraig_Node_t; -typedef struct Fraig_NodeVecStruct_t_ Fraig_NodeVec_t; -typedef struct Fraig_HashTableStruct_t_ Fraig_HashTable_t; -typedef struct Fraig_ParamsStruct_t_ Fraig_Params_t; -typedef struct Fraig_PatternsStruct_t_ Fraig_Patterns_t; -typedef struct Prove_ParamsStruct_t_ Prove_Params_t; - -struct Fraig_ParamsStruct_t_ -{ - int nPatsRand; // the number of words of random simulation info - int nPatsDyna; // the number of words of dynamic simulation info - int nBTLimit; // the max number of backtracks to perform - int nSeconds; // the timeout for the final proof - int fFuncRed; // performs only one level hashing - int fFeedBack; // enables solver feedback - int fDist1Pats; // enables distance-1 patterns - int fDoSparse; // performs equiv tests for sparse functions - int fChoicing; // enables recording structural choices - int fTryProve; // tries to solve the final miter - int fVerbose; // the verbosiness flag - int fVerboseP; // the verbosiness flag (for proof reporting) - int fInternal; // is set to 1 for internal fraig calls - int nConfLimit; // the limit on the number of conflicts - ABC_INT64_T nInspLimit; // the limit on the number of inspections -}; - -struct Prove_ParamsStruct_t_ -{ - // general parameters - int fUseFraiging; // enables fraiging - int fUseRewriting; // enables rewriting - int fUseBdds; // enables BDD construction when other methods fail - int fVerbose; // prints verbose stats - // iterations - int nItersMax; // the number of iterations - // mitering - int nMiteringLimitStart; // starting mitering limit - float nMiteringLimitMulti; // multiplicative coefficient to increase the limit in each iteration - // rewriting - int nRewritingLimitStart; // the number of rewriting iterations - float nRewritingLimitMulti; // multiplicative coefficient to increase the limit in each iteration - // fraiging - int nFraigingLimitStart; // starting backtrack(conflict) limit - float nFraigingLimitMulti; // multiplicative coefficient to increase the limit in each iteration - // last-gasp BDD construction - int nBddSizeLimit; // the number of BDD nodes when construction is aborted - int fBddReorder; // enables dynamic BDD variable reordering - // last-gasp mitering - int nMiteringLimitLast; // final mitering limit - // global SAT solver limits - ABC_INT64_T nTotalBacktrackLimit; // global limit on the number of backtracks - ABC_INT64_T nTotalInspectLimit; // global limit on the number of clause inspects - // global resources applied - ABC_INT64_T nTotalBacktracksMade; // the total number of backtracks made - ABC_INT64_T nTotalInspectsMade; // the total number of inspects made -}; - -//////////////////////////////////////////////////////////////////////// -/// GLOBAL VARIABLES /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// MACRO DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -// macros working with complemented attributes of the nodes -#define Fraig_IsComplement(p) (((int)((ABC_PTRUINT_T) (p) & 01))) -#define Fraig_Regular(p) ((Fraig_Node_t *)((ABC_PTRUINT_T)(p) & ~01)) -#define Fraig_Not(p) ((Fraig_Node_t *)((ABC_PTRUINT_T)(p) ^ 01)) -#define Fraig_NotCond(p,c) ((Fraig_Node_t *)((ABC_PTRUINT_T)(p) ^ (c))) - -// these are currently not used -#define Fraig_Ref(p) -#define Fraig_Deref(p) -#define Fraig_RecursiveDeref(p,c) - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/*=== fraigApi.c =============================================================*/ -extern Fraig_NodeVec_t * Fraig_ManReadVecInputs( Fraig_Man_t * p ); -extern Fraig_NodeVec_t * Fraig_ManReadVecOutputs( Fraig_Man_t * p ); -extern Fraig_NodeVec_t * Fraig_ManReadVecNodes( Fraig_Man_t * p ); -extern Fraig_Node_t ** Fraig_ManReadInputs ( Fraig_Man_t * p ); -extern Fraig_Node_t ** Fraig_ManReadOutputs( Fraig_Man_t * p ); -extern Fraig_Node_t ** Fraig_ManReadNodes( Fraig_Man_t * p ); -extern int Fraig_ManReadInputNum ( Fraig_Man_t * p ); -extern int Fraig_ManReadOutputNum( Fraig_Man_t * p ); -extern int Fraig_ManReadNodeNum( Fraig_Man_t * p ); -extern Fraig_Node_t * Fraig_ManReadConst1 ( Fraig_Man_t * p ); -extern Fraig_Node_t * Fraig_ManReadIthVar( Fraig_Man_t * p, int i ); -extern Fraig_Node_t * Fraig_ManReadIthNode( Fraig_Man_t * p, int i ); -extern char ** Fraig_ManReadInputNames( Fraig_Man_t * p ); -extern char ** Fraig_ManReadOutputNames( Fraig_Man_t * p ); -extern char * Fraig_ManReadVarsInt( Fraig_Man_t * p ); -extern char * Fraig_ManReadSat( Fraig_Man_t * p ); -extern int Fraig_ManReadFuncRed( Fraig_Man_t * p ); -extern int Fraig_ManReadFeedBack( Fraig_Man_t * p ); -extern int Fraig_ManReadDoSparse( Fraig_Man_t * p ); -extern int Fraig_ManReadChoicing( Fraig_Man_t * p ); -extern int Fraig_ManReadVerbose( Fraig_Man_t * p ); -extern int * Fraig_ManReadModel( Fraig_Man_t * p ); -extern int Fraig_ManReadPatternNumRandom( Fraig_Man_t * p ); -extern int Fraig_ManReadPatternNumDynamic( Fraig_Man_t * p ); -extern int Fraig_ManReadPatternNumDynamicFiltered( Fraig_Man_t * p ); -extern int Fraig_ManReadSatFails( Fraig_Man_t * p ); -extern int Fraig_ManReadConflicts( Fraig_Man_t * p ); -extern int Fraig_ManReadInspects( Fraig_Man_t * p ); - -extern void Fraig_ManSetFuncRed( Fraig_Man_t * p, int fFuncRed ); -extern void Fraig_ManSetFeedBack( Fraig_Man_t * p, int fFeedBack ); -extern void Fraig_ManSetDoSparse( Fraig_Man_t * p, int fDoSparse ); -extern void Fraig_ManSetChoicing( Fraig_Man_t * p, int fChoicing ); -extern void Fraig_ManSetTryProve( Fraig_Man_t * p, int fTryProve ); -extern void Fraig_ManSetVerbose( Fraig_Man_t * p, int fVerbose ); -extern void Fraig_ManSetTimeToGraph( Fraig_Man_t * p, int Time ); -extern void Fraig_ManSetTimeToNet( Fraig_Man_t * p, int Time ); -extern void Fraig_ManSetTimeTotal( Fraig_Man_t * p, int Time ); -extern void Fraig_ManSetOutputNames( Fraig_Man_t * p, char ** ppNames ); -extern void Fraig_ManSetInputNames( Fraig_Man_t * p, char ** ppNames ); -extern void Fraig_ManSetPo( Fraig_Man_t * p, Fraig_Node_t * pNode ); - -extern Fraig_Node_t * Fraig_NodeReadData0( Fraig_Node_t * p ); -extern Fraig_Node_t * Fraig_NodeReadData1( Fraig_Node_t * p ); -extern int Fraig_NodeReadNum( Fraig_Node_t * p ); -extern Fraig_Node_t * Fraig_NodeReadOne( Fraig_Node_t * p ); -extern Fraig_Node_t * Fraig_NodeReadTwo( Fraig_Node_t * p ); -extern Fraig_Node_t * Fraig_NodeReadNextE( Fraig_Node_t * p ); -extern Fraig_Node_t * Fraig_NodeReadRepr( Fraig_Node_t * p ); -extern int Fraig_NodeReadNumRefs( Fraig_Node_t * p ); -extern int Fraig_NodeReadNumFanouts( Fraig_Node_t * p ); -extern int Fraig_NodeReadSimInv( Fraig_Node_t * p ); -extern int Fraig_NodeReadNumOnes( Fraig_Node_t * p ); -extern unsigned * Fraig_NodeReadPatternsRandom( Fraig_Node_t * p ); -extern unsigned * Fraig_NodeReadPatternsDynamic( Fraig_Node_t * p ); - -extern void Fraig_NodeSetData0( Fraig_Node_t * p, Fraig_Node_t * pData ); -extern void Fraig_NodeSetData1( Fraig_Node_t * p, Fraig_Node_t * pData ); - -extern int Fraig_NodeIsConst( Fraig_Node_t * p ); -extern int Fraig_NodeIsVar( Fraig_Node_t * p ); -extern int Fraig_NodeIsAnd( Fraig_Node_t * p ); -extern int Fraig_NodeComparePhase( Fraig_Node_t * p1, Fraig_Node_t * p2 ); - -extern Fraig_Node_t * Fraig_NodeOr( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ); -extern Fraig_Node_t * Fraig_NodeAnd( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ); -extern Fraig_Node_t * Fraig_NodeOr( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ); -extern Fraig_Node_t * Fraig_NodeExor( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ); -extern Fraig_Node_t * Fraig_NodeMux( Fraig_Man_t * p, Fraig_Node_t * pNode, Fraig_Node_t * pNodeT, Fraig_Node_t * pNodeE ); -extern void Fraig_NodeSetChoice( Fraig_Man_t * pMan, Fraig_Node_t * pNodeOld, Fraig_Node_t * pNodeNew ); - -/*=== fraigMan.c =============================================================*/ -extern void Prove_ParamsSetDefault( Prove_Params_t * pParams ); -extern void Fraig_ParamsSetDefault( Fraig_Params_t * pParams ); -extern void Fraig_ParamsSetDefaultFull( Fraig_Params_t * pParams ); -extern Fraig_Man_t * Fraig_ManCreate( Fraig_Params_t * pParams ); -extern void Fraig_ManFree( Fraig_Man_t * pMan ); -extern void Fraig_ManPrintStats( Fraig_Man_t * p ); -extern Fraig_NodeVec_t * Fraig_ManGetSimInfo( Fraig_Man_t * p ); -extern int Fraig_ManCheckClauseUsingSimInfo( Fraig_Man_t * p, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2 ); -extern void Fraig_ManAddClause( Fraig_Man_t * p, Fraig_Node_t ** ppNodes, int nNodes ); - -/*=== fraigDfs.c =============================================================*/ -extern Fraig_NodeVec_t * Fraig_Dfs( Fraig_Man_t * pMan, int fEquiv ); -extern Fraig_NodeVec_t * Fraig_DfsOne( Fraig_Man_t * pMan, Fraig_Node_t * pNode, int fEquiv ); -extern Fraig_NodeVec_t * Fraig_DfsNodes( Fraig_Man_t * pMan, Fraig_Node_t ** ppNodes, int nNodes, int fEquiv ); -extern Fraig_NodeVec_t * Fraig_DfsReverse( Fraig_Man_t * pMan ); -extern int Fraig_CountNodes( Fraig_Man_t * pMan, int fEquiv ); -extern int Fraig_CheckTfi( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -extern int Fraig_CountLevels( Fraig_Man_t * pMan ); - -/*=== fraigSat.c =============================================================*/ -extern int Fraig_NodesAreEqual( Fraig_Man_t * p, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int nBTLimit, int nTimeLimit ); -extern int Fraig_NodeIsEquivalent( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew, int nBTLimit, int nTimeLimit ); -extern void Fraig_ManProveMiter( Fraig_Man_t * p ); -extern int Fraig_ManCheckMiter( Fraig_Man_t * p ); -extern int Fraig_ManCheckClauseUsingSat( Fraig_Man_t * p, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int nBTLimit ); - -/*=== fraigVec.c ===============================================================*/ -extern Fraig_NodeVec_t * Fraig_NodeVecAlloc( int nCap ); -extern void Fraig_NodeVecFree( Fraig_NodeVec_t * p ); -extern Fraig_NodeVec_t * Fraig_NodeVecDup( Fraig_NodeVec_t * p ); -extern Fraig_Node_t ** Fraig_NodeVecReadArray( Fraig_NodeVec_t * p ); -extern int Fraig_NodeVecReadSize( Fraig_NodeVec_t * p ); -extern void Fraig_NodeVecGrow( Fraig_NodeVec_t * p, int nCapMin ); -extern void Fraig_NodeVecShrink( Fraig_NodeVec_t * p, int nSizeNew ); -extern void Fraig_NodeVecClear( Fraig_NodeVec_t * p ); -extern void Fraig_NodeVecPush( Fraig_NodeVec_t * p, Fraig_Node_t * Entry ); -extern int Fraig_NodeVecPushUnique( Fraig_NodeVec_t * p, Fraig_Node_t * Entry ); -extern void Fraig_NodeVecPushOrder( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ); -extern int Fraig_NodeVecPushUniqueOrder( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ); -extern void Fraig_NodeVecPushOrderByLevel( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ); -extern int Fraig_NodeVecPushUniqueOrderByLevel( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ); -extern Fraig_Node_t * Fraig_NodeVecPop( Fraig_NodeVec_t * p ); -extern void Fraig_NodeVecRemove( Fraig_NodeVec_t * p, Fraig_Node_t * Entry ); -extern void Fraig_NodeVecWriteEntry( Fraig_NodeVec_t * p, int i, Fraig_Node_t * Entry ); -extern Fraig_Node_t * Fraig_NodeVecReadEntry( Fraig_NodeVec_t * p, int i ); -extern void Fraig_NodeVecSortByLevel( Fraig_NodeVec_t * p, int fIncreasing ); -extern void Fraig_NodeVecSortByNumber( Fraig_NodeVec_t * p ); - -/*=== fraigUtil.c ===============================================================*/ -extern void Fraig_ManMarkRealFanouts( Fraig_Man_t * p ); -extern int Fraig_ManCheckConsistency( Fraig_Man_t * p ); -extern int Fraig_GetMaxLevel( Fraig_Man_t * pMan ); -extern void Fraig_ManReportChoices( Fraig_Man_t * pMan ); -extern void Fraig_MappingSetChoiceLevels( Fraig_Man_t * pMan, int fMaximum ); -extern Fraig_NodeVec_t * Fraig_CollectSupergate( Fraig_Node_t * pNode, int fStopAtMux ); - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - - -ABC_NAMESPACE_HEADER_END - - - -#endif diff --git a/src/sat/fraig/fraigApi.c b/src/sat/fraig/fraigApi.c deleted file mode 100644 index 6e0ab959..00000000 --- a/src/sat/fraig/fraigApi.c +++ /dev/null @@ -1,302 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigApi.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Access APIs for the FRAIG manager and node.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigApi.c,v 1.2 2005/07/08 01:01:30 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Access functions to read the data members of the manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_ManReadVecInputs( Fraig_Man_t * p ) { return p->vInputs; } -Fraig_NodeVec_t * Fraig_ManReadVecOutputs( Fraig_Man_t * p ) { return p->vOutputs; } -Fraig_NodeVec_t * Fraig_ManReadVecNodes( Fraig_Man_t * p ) { return p->vNodes; } -Fraig_Node_t ** Fraig_ManReadInputs ( Fraig_Man_t * p ) { return p->vInputs->pArray; } -Fraig_Node_t ** Fraig_ManReadOutputs( Fraig_Man_t * p ) { return p->vOutputs->pArray; } -Fraig_Node_t ** Fraig_ManReadNodes( Fraig_Man_t * p ) { return p->vNodes->pArray; } -int Fraig_ManReadInputNum ( Fraig_Man_t * p ) { return p->vInputs->nSize; } -int Fraig_ManReadOutputNum( Fraig_Man_t * p ) { return p->vOutputs->nSize; } -int Fraig_ManReadNodeNum( Fraig_Man_t * p ) { return p->vNodes->nSize; } -Fraig_Node_t * Fraig_ManReadConst1 ( Fraig_Man_t * p ) { return p->pConst1; } -Fraig_Node_t * Fraig_ManReadIthNode( Fraig_Man_t * p, int i ) { assert ( i < p->vNodes->nSize ); return p->vNodes->pArray[i]; } -char ** Fraig_ManReadInputNames( Fraig_Man_t * p ) { return p->ppInputNames; } -char ** Fraig_ManReadOutputNames( Fraig_Man_t * p ) { return p->ppOutputNames; } -char * Fraig_ManReadVarsInt( Fraig_Man_t * p ) { return (char *)p->vVarsInt; } -char * Fraig_ManReadSat( Fraig_Man_t * p ) { return (char *)p->pSat; } -int Fraig_ManReadFuncRed( Fraig_Man_t * p ) { return p->fFuncRed; } -int Fraig_ManReadFeedBack( Fraig_Man_t * p ) { return p->fFeedBack; } -int Fraig_ManReadDoSparse( Fraig_Man_t * p ) { return p->fDoSparse; } -int Fraig_ManReadChoicing( Fraig_Man_t * p ) { return p->fChoicing; } -int Fraig_ManReadVerbose( Fraig_Man_t * p ) { return p->fVerbose; } -int * Fraig_ManReadModel( Fraig_Man_t * p ) { return p->pModel; } -// returns the number of patterns used for random simulation (this number is fixed for the FRAIG run) -int Fraig_ManReadPatternNumRandom( Fraig_Man_t * p ) { return p->nWordsRand * 32; } -// returns the number of dynamic patterns accumulated at runtime (include SAT solver counter-examples and distance-1 patterns derived from them) -int Fraig_ManReadPatternNumDynamic( Fraig_Man_t * p ) { return p->iWordStart * 32; } -// returns the number of dynamic patterns proved useful to distinquish some FRAIG nodes (this number is more than 0 after the first garbage collection of patterns) -int Fraig_ManReadPatternNumDynamicFiltered( Fraig_Man_t * p ) { return p->iPatsPerm; } -// returns the number of times FRAIG package timed out -int Fraig_ManReadSatFails( Fraig_Man_t * p ) { return p->nSatFailsReal; } -// returns the number of conflicts in the SAT solver -int Fraig_ManReadConflicts( Fraig_Man_t * p ) { return p->pSat? Msat_SolverReadBackTracks(p->pSat) : 0; } -// returns the number of inspections in the SAT solver -int Fraig_ManReadInspects( Fraig_Man_t * p ) { return p->pSat? Msat_SolverReadInspects(p->pSat) : 0; } - -/**Function************************************************************* - - Synopsis [Access functions to set the data members of the manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManSetFuncRed( Fraig_Man_t * p, int fFuncRed ) { p->fFuncRed = fFuncRed; } -void Fraig_ManSetFeedBack( Fraig_Man_t * p, int fFeedBack ) { p->fFeedBack = fFeedBack; } -void Fraig_ManSetDoSparse( Fraig_Man_t * p, int fDoSparse ) { p->fDoSparse = fDoSparse; } -void Fraig_ManSetChoicing( Fraig_Man_t * p, int fChoicing ) { p->fChoicing = fChoicing; } -void Fraig_ManSetTryProve( Fraig_Man_t * p, int fTryProve ) { p->fTryProve = fTryProve; } -void Fraig_ManSetVerbose( Fraig_Man_t * p, int fVerbose ) { p->fVerbose = fVerbose; } -void Fraig_ManSetTimeToGraph( Fraig_Man_t * p, int Time ) { p->timeToAig = Time; } -void Fraig_ManSetTimeToNet( Fraig_Man_t * p, int Time ) { p->timeToNet = Time; } -void Fraig_ManSetTimeTotal( Fraig_Man_t * p, int Time ) { p->timeTotal = Time; } -void Fraig_ManSetOutputNames( Fraig_Man_t * p, char ** ppNames ) { p->ppOutputNames = ppNames; } -void Fraig_ManSetInputNames( Fraig_Man_t * p, char ** ppNames ) { p->ppInputNames = ppNames; } - -/**Function************************************************************* - - Synopsis [Access functions to read the data members of the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeReadData0( Fraig_Node_t * p ) { return p->pData0; } -Fraig_Node_t * Fraig_NodeReadData1( Fraig_Node_t * p ) { return p->pData1; } -int Fraig_NodeReadNum( Fraig_Node_t * p ) { return p->Num; } -Fraig_Node_t * Fraig_NodeReadOne( Fraig_Node_t * p ) { assert (!Fraig_IsComplement(p)); return p->p1; } -Fraig_Node_t * Fraig_NodeReadTwo( Fraig_Node_t * p ) { assert (!Fraig_IsComplement(p)); return p->p2; } -Fraig_Node_t * Fraig_NodeReadNextE( Fraig_Node_t * p ) { return p->pNextE; } -Fraig_Node_t * Fraig_NodeReadRepr( Fraig_Node_t * p ) { return p->pRepr; } -int Fraig_NodeReadNumRefs( Fraig_Node_t * p ) { return p->nRefs; } -int Fraig_NodeReadNumFanouts( Fraig_Node_t * p ) { return p->nFanouts; } -int Fraig_NodeReadSimInv( Fraig_Node_t * p ) { return p->fInv; } -int Fraig_NodeReadNumOnes( Fraig_Node_t * p ) { return p->nOnes; } -// returns the pointer to the random simulation patterns (their number is returned by Fraig_ManReadPatternNumRandom) -// memory pointed to by this and the following procedure is maintained by the FRAIG package and exists as long as the package runs -unsigned * Fraig_NodeReadPatternsRandom( Fraig_Node_t * p ) { return p->puSimR; } -// returns the pointer to the dynamic simulation patterns (their number is returned by Fraig_ManReadPatternNumDynamic or Fraig_ManReadPatternNumDynamicFiltered) -// if the number of patterns is not evenly divisible by 32, the patterns beyond the given number contain garbage -unsigned * Fraig_NodeReadPatternsDynamic( Fraig_Node_t * p ) { return p->puSimD; } - -/**Function************************************************************* - - Synopsis [Access functions to set the data members of the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeSetData0( Fraig_Node_t * p, Fraig_Node_t * pData ) { p->pData0 = pData; } -void Fraig_NodeSetData1( Fraig_Node_t * p, Fraig_Node_t * pData ) { p->pData1 = pData; } - -/**Function************************************************************* - - Synopsis [Checks the type of the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsConst( Fraig_Node_t * p ) { return (Fraig_Regular(p))->Num == 0; } -int Fraig_NodeIsVar( Fraig_Node_t * p ) { return (Fraig_Regular(p))->NumPi >= 0; } -int Fraig_NodeIsAnd( Fraig_Node_t * p ) { return (Fraig_Regular(p))->NumPi < 0 && (Fraig_Regular(p))->Num > 0; } -int Fraig_NodeComparePhase( Fraig_Node_t * p1, Fraig_Node_t * p2 ) { assert( !Fraig_IsComplement(p1) ); assert( !Fraig_IsComplement(p2) ); return p1->fInv ^ p2->fInv; } - -/**Function************************************************************* - - Synopsis [Returns a new primary input node.] - - Description [If the node with this number does not exist, - create a new PI node with this number.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_ManReadIthVar( Fraig_Man_t * p, int i ) -{ - int k; - if ( i < 0 ) - { - printf( "Requesting a PI with a negative number\n" ); - return NULL; - } - // create the PIs to fill in the interval - if ( i >= p->vInputs->nSize ) - for ( k = p->vInputs->nSize; k <= i; k++ ) - Fraig_NodeCreatePi( p ); - return p->vInputs->pArray[i]; -} - -/**Function************************************************************* - - Synopsis [Creates a new PO node.] - - Description [This procedure may take a complemented node.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManSetPo( Fraig_Man_t * p, Fraig_Node_t * pNode ) -{ - // internal node may be a PO two times - Fraig_Regular(pNode)->fNodePo = 1; - Fraig_NodeVecPush( p->vOutputs, pNode ); -} - -/**Function************************************************************* - - Synopsis [Perfoms the AND operation with functional hashing.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeAnd( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ) -{ - return Fraig_NodeAndCanon( p, p1, p2 ); -} - -/**Function************************************************************* - - Synopsis [Perfoms the OR operation with functional hashing.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeOr( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ) -{ - return Fraig_Not( Fraig_NodeAndCanon( p, Fraig_Not(p1), Fraig_Not(p2) ) ); -} - -/**Function************************************************************* - - Synopsis [Perfoms the EXOR operation with functional hashing.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeExor( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ) -{ - return Fraig_NodeMux( p, p1, Fraig_Not(p2), p2 ); -} - -/**Function************************************************************* - - Synopsis [Perfoms the MUX operation with functional hashing.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeMux( Fraig_Man_t * p, Fraig_Node_t * pC, Fraig_Node_t * pT, Fraig_Node_t * pE ) -{ - Fraig_Node_t * pAnd1, * pAnd2, * pRes; - pAnd1 = Fraig_NodeAndCanon( p, pC, pT ); Fraig_Ref( pAnd1 ); - pAnd2 = Fraig_NodeAndCanon( p, Fraig_Not(pC), pE ); Fraig_Ref( pAnd2 ); - pRes = Fraig_NodeOr( p, pAnd1, pAnd2 ); - Fraig_RecursiveDeref( p, pAnd1 ); - Fraig_RecursiveDeref( p, pAnd2 ); - Fraig_Deref( pRes ); - return pRes; -} - - -/**Function************************************************************* - - Synopsis [Sets the node to be equivalent to the given one.] - - Description [This procedure is a work-around for the equivalence check. - Does not verify the equivalence. Use at the user's risk.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeSetChoice( Fraig_Man_t * pMan, Fraig_Node_t * pNodeOld, Fraig_Node_t * pNodeNew ) -{ -// assert( pMan->fChoicing ); - pNodeNew->pNextE = pNodeOld->pNextE; - pNodeOld->pNextE = pNodeNew; - pNodeNew->pRepr = pNodeOld; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigCanon.c b/src/sat/fraig/fraigCanon.c deleted file mode 100644 index 47539db2..00000000 --- a/src/sat/fraig/fraigCanon.c +++ /dev/null @@ -1,223 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigCanon.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [AND-node creation and elementary AND-operation.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigCanon.c,v 1.4 2005/07/08 01:01:31 alanmi Exp $] - -***********************************************************************/ - -#include <limits.h> -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [The internal AND operation for the two FRAIG nodes.] - - Description [This procedure is the core of the FRAIG package, because - it performs the two-step canonicization of FRAIG nodes. The first step - involves the lookup in the structural hash table (which hashes two ANDs - into a node that has them as fanins, if such a node exists). If the node - is not found in the structural hash table, an attempt is made to find a - functionally equivalent node in another hash table (which hashes the - simulation info into the nodes, which has this simulation info). Some - tricks used on the way are described in the comments to the code and - in the paper "FRAIGs: Functionally reduced AND-INV graphs".] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeAndCanon( Fraig_Man_t * pMan, Fraig_Node_t * p1, Fraig_Node_t * p2 ) -{ - Fraig_Node_t * pNodeNew, * pNodeOld, * pNodeRepr; - int fUseSatCheck; -// int RetValue; - - // check for trivial cases - if ( p1 == p2 ) - return p1; - if ( p1 == Fraig_Not(p2) ) - return Fraig_Not(pMan->pConst1); - if ( Fraig_NodeIsConst(p1) ) - { - if ( p1 == pMan->pConst1 ) - return p2; - return Fraig_Not(pMan->pConst1); - } - if ( Fraig_NodeIsConst(p2) ) - { - if ( p2 == pMan->pConst1 ) - return p1; - return Fraig_Not(pMan->pConst1); - } -/* - // check for less trivial cases - if ( Fraig_IsComplement(p1) ) - { - if ( RetValue = Fraig_NodeIsInSupergate( Fraig_Regular(p1), p2 ) ) - { - if ( RetValue == -1 ) - pMan->nImplies0++; - else - pMan->nImplies1++; - - if ( RetValue == -1 ) - return p2; - } - } - else - { - if ( RetValue = Fraig_NodeIsInSupergate( p1, p2 ) ) - { - if ( RetValue == 1 ) - pMan->nSimplifies1++; - else - pMan->nSimplifies0++; - - if ( RetValue == 1 ) - return p1; - return Fraig_Not(pMan->pConst1); - } - } - - if ( Fraig_IsComplement(p2) ) - { - if ( RetValue = Fraig_NodeIsInSupergate( Fraig_Regular(p2), p1 ) ) - { - if ( RetValue == -1 ) - pMan->nImplies0++; - else - pMan->nImplies1++; - - if ( RetValue == -1 ) - return p1; - } - } - else - { - if ( RetValue = Fraig_NodeIsInSupergate( p2, p1 ) ) - { - if ( RetValue == 1 ) - pMan->nSimplifies1++; - else - pMan->nSimplifies0++; - - if ( RetValue == 1 ) - return p2; - return Fraig_Not(pMan->pConst1); - } - } -*/ - // perform level-one structural hashing - if ( Fraig_HashTableLookupS( pMan, p1, p2, &pNodeNew ) ) // the node with these children is found - { - // if the existent node is part of the cone of unused logic - // (that is logic feeding the node which is equivalent to the given node) - // return the canonical representative of this node - // determine the phase of the given node, with respect to its canonical form - pNodeRepr = Fraig_Regular(pNodeNew)->pRepr; - if ( pMan->fFuncRed && pNodeRepr ) - return Fraig_NotCond( pNodeRepr, Fraig_IsComplement(pNodeNew) ^ Fraig_NodeComparePhase(Fraig_Regular(pNodeNew), pNodeRepr) ); - // otherwise, the node is itself a canonical representative, return it - return pNodeNew; - } - // the same node is not found, but the new one is created - - // if one level hashing is requested (without functionality hashing), return - if ( !pMan->fFuncRed ) - return pNodeNew; - - // check if the new node is unique using the simulation info - if ( pNodeNew->nOnes == 0 || pNodeNew->nOnes == (unsigned)pMan->nWordsRand * 32 ) - { - pMan->nSatZeros++; - if ( !pMan->fDoSparse ) // if we do not do sparse functions, skip - return pNodeNew; - // check the sparse function simulation hash table - pNodeOld = Fraig_HashTableLookupF0( pMan, pNodeNew ); - if ( pNodeOld == NULL ) // the node is unique (it is added to the table) - return pNodeNew; - } - else - { - // check the simulation hash table - pNodeOld = Fraig_HashTableLookupF( pMan, pNodeNew ); - if ( pNodeOld == NULL ) // the node is unique - return pNodeNew; - } - assert( pNodeOld->pRepr == 0 ); - // there is another node which looks the same according to simulation - - // use SAT to resolve the ambiguity - fUseSatCheck = (pMan->nInspLimit == 0 || Fraig_ManReadInspects(pMan) < pMan->nInspLimit); - if ( fUseSatCheck && Fraig_NodeIsEquivalent( pMan, pNodeOld, pNodeNew, pMan->nBTLimit, 1000000 ) ) - { - // set the node to be equivalent with this node - // to prevent loops, only set if the old node is not in the TFI of the new node - // the loop may happen in the following case: suppose - // NodeC = AND(NodeA, NodeB) and at the same time NodeA => NodeB - // in this case, NodeA and NodeC are functionally equivalent - // however, NodeA is a fanin of node NodeC (this leads to the loop) - // add the node to the list of equivalent nodes or dereference it - if ( pMan->fChoicing && !Fraig_CheckTfi( pMan, pNodeOld, pNodeNew ) ) - { - // if the old node is not in the TFI of the new node and choicing - // is enabled, add the new node to the list of equivalent ones - pNodeNew->pNextE = pNodeOld->pNextE; - pNodeOld->pNextE = pNodeNew; - } - // set the canonical representative of this node - pNodeNew->pRepr = pNodeOld; - // return the equivalent node - return Fraig_NotCond( pNodeOld, Fraig_NodeComparePhase(pNodeOld, pNodeNew) ); - } - - // now we add another member to this simulation class - if ( pNodeNew->nOnes == 0 || pNodeNew->nOnes == (unsigned)pMan->nWordsRand * 32 ) - { - Fraig_Node_t * pNodeTemp; - assert( pMan->fDoSparse ); - pNodeTemp = Fraig_HashTableLookupF0( pMan, pNodeNew ); -// assert( pNodeTemp == NULL ); -// Fraig_HashTableInsertF0( pMan, pNodeNew ); - } - else - { - pNodeNew->pNextD = pNodeOld->pNextD; - pNodeOld->pNextD = pNodeNew; - } - // return the new node - assert( pNodeNew->pRepr == 0 ); - return pNodeNew; -} - - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigChoice.c b/src/sat/fraig/fraigChoice.c deleted file mode 100644 index 21d4fe10..00000000 --- a/src/sat/fraig/fraigChoice.c +++ /dev/null @@ -1,246 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigTrans.c] - - PackageName [MVSIS 1.3: Multi-valued logic synthesis system.] - - Synopsis [Adds the additive and distributive choices to the AIG.] - - Author [MVSIS Group] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - February 1, 2003.] - - Revision [$Id: fraigTrans.c,v 1.1 2005/02/28 05:34:34 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Adds choice nodes based on associativity.] - - Description [Make nLimit big AND gates and add all decompositions - to the Fraig.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManAddChoices( Fraig_Man_t * pMan, int fVerbose, int nLimit ) -{ -// ProgressBar * pProgress; - char Buffer[100]; - int clkTotal = clock(); - int i, nNodesBefore, nNodesAfter, nInputs, nMaxNodes; - int /*nMaxLevel,*/ nDistributive; - Fraig_Node_t *pNode, *pRepr; - Fraig_Node_t *pX, *pA, *pB, *pC, /* *pD,*/ *pN, /* *pQ, *pR,*/ *pT; - int fShortCut = 0; - - nDistributive = 0; - -// Fraig_ManSetApprox( pMan, 1 ); - - // NO functional reduction - if (fShortCut) Fraig_ManSetFuncRed( pMan, 0 ); - - // First we mark critical functions i.e. compute those - // nodes which lie on the critical path. Note that this - // doesn't update the required times on any choice nodes - // which are not the representatives -/* - nMaxLevel = Fraig_GetMaxLevel( pMan ); - for ( i = 0; i < pMan->nOutputs; i++ ) - { - Fraig_SetNodeRequired( pMan, pMan->pOutputs[i], nMaxLevel ); - } -*/ - nNodesBefore = Fraig_ManReadNodeNum( pMan ); - nInputs = Fraig_ManReadInputNum( pMan ); - nMaxNodes = nInputs + nLimit * ( nNodesBefore - nInputs ); - - printf ("Limit = %d, Before = %d\n", nMaxNodes, nNodesBefore ); - - if (0) - { - char buffer[128]; - sprintf (buffer, "test" ); -// Fraig_MappingShow( pMan, buffer ); - } - -// pProgress = Extra_ProgressBarStart( stdout, nMaxNodes ); -Fraig_ManCheckConsistency( pMan ); - - for ( i = nInputs+1; (i < Fraig_ManReadNodeNum( pMan )) - && (nMaxNodes > Fraig_ManReadNodeNum( pMan )); ++i ) - { -// if ( i == nNodesBefore ) -// break; - - pNode = Fraig_ManReadIthNode( pMan, i ); - assert ( pNode ); - - pRepr = pNode->pRepr ? pNode->pRepr : pNode; - //printf ("Slack: %d\n", Fraig_NodeReadSlack( pRepr )); - - // All the new associative choices we add will have huge slack - // since we do not redo timing, and timing doesnt handle choices - // well anyway. However every newly added node is a choice of an - // existing critical node, so they are considered critical. -// if ( (Fraig_NodeReadSlack( pRepr ) > 3) && (i < nNodesBefore) ) -// continue; - -// if ( pNode->pRepr ) -// continue; - - // Try ((ab)c), x = ab -> (a(bc)) and (b(ac)) - pX = Fraig_NodeReadOne(pNode); - pC = Fraig_NodeReadTwo(pNode); - if (Fraig_NodeIsAnd(pX) && !Fraig_IsComplement(pX)) - { - pA = Fraig_NodeReadOne(Fraig_Regular(pX)); - pB = Fraig_NodeReadTwo(Fraig_Regular(pX)); - -// pA = Fraig_NodeGetRepr( pA ); -// pB = Fraig_NodeGetRepr( pB ); -// pC = Fraig_NodeGetRepr( pC ); - - if (fShortCut) - { - pT = Fraig_NodeAnd(pMan, pB, pC); - if ( !pT->pRepr ) - { - pN = Fraig_NodeAnd(pMan, pA, pT); -// Fraig_NodeAddChoice( pMan, pNode, pN ); - } - } - else - pN = Fraig_NodeAnd(pMan, pA, Fraig_NodeAnd(pMan, pB, pC)); - // assert ( Fraig_NodesEqual(pN, pNode) ); - - - if (fShortCut) - { - pT = Fraig_NodeAnd(pMan, pA, pC); - if ( !pT->pRepr ) - { - pN = Fraig_NodeAnd(pMan, pB, pT); -// Fraig_NodeAddChoice( pMan, pNode, pN ); - } - } - else - pN = Fraig_NodeAnd(pMan, pB, Fraig_NodeAnd(pMan, pA, pC)); - // assert ( Fraig_NodesEqual(pN, pNode) ); - } - - - // Try (a(bc)), x = bc -> ((ab)c) and ((ac)b) - pA = Fraig_NodeReadOne(pNode); - pX = Fraig_NodeReadTwo(pNode); - if (Fraig_NodeIsAnd(pX) && !Fraig_IsComplement(pX)) - { - pB = Fraig_NodeReadOne(Fraig_Regular(pX)); - pC = Fraig_NodeReadTwo(Fraig_Regular(pX)); - -// pA = Fraig_NodeGetRepr( pA ); -// pB = Fraig_NodeGetRepr( pB ); -// pC = Fraig_NodeGetRepr( pC ); - - if (fShortCut) - { - pT = Fraig_NodeAnd(pMan, pA, pB); - if ( !pT->pRepr ) - { - pN = Fraig_NodeAnd(pMan, pC, pT); -// Fraig_NodeAddChoice( pMan, pNode, pN ); - } - } - else - pN = Fraig_NodeAnd(pMan, Fraig_NodeAnd(pMan, pA, pB), pC); - // assert ( Fraig_NodesEqual(pN, pNode) ); - - if (fShortCut) - { - pT = Fraig_NodeAnd(pMan, pA, pC); - if ( !pT->pRepr ) - { - pN = Fraig_NodeAnd(pMan, pB, pT); -// Fraig_NodeAddChoice( pMan, pNode, pN ); - } - } - else - pN = Fraig_NodeAnd(pMan, Fraig_NodeAnd(pMan, pA, pC), pB); - // assert ( Fraig_NodesEqual(pN, pNode) ); - } - - -/* - // Try distributive transform - pQ = Fraig_NodeReadOne(pNode); - pR = Fraig_NodeReadTwo(pNode); - if ( (Fraig_IsComplement(pQ) && Fraig_NodeIsAnd(pQ)) - && (Fraig_IsComplement(pR) && Fraig_NodeIsAnd(pR)) ) - { - pA = Fraig_NodeReadOne(Fraig_Regular(pQ)); - pB = Fraig_NodeReadTwo(Fraig_Regular(pQ)); - pC = Fraig_NodeReadOne(Fraig_Regular(pR)); - pD = Fraig_NodeReadTwo(Fraig_Regular(pR)); - - // Now detect the !(xy + xz) pattern, store - // x in pA, y in pB and z in pC and set pD = 0 to indicate - // pattern was found - assert (pD != 0); - if (pA == pC) { pC = pD; pD = 0; } - if (pA == pD) { pD = 0; } - if (pB == pC) { pB = pA; pA = pC; pC = pD; pD = 0; } - if (pB == pD) { pB = pA; pA = pD; pD = 0; } - if (pD == 0) - { - nDistributive++; - pN = Fraig_Not(Fraig_NodeAnd(pMan, pA, - Fraig_NodeOr(pMan, pB, pC))); - if (fShortCut) Fraig_NodeAddChoice( pMan, pNode, pN ); - // assert ( Fraig_NodesEqual(pN, pNode) ); - } - } -*/ - if ( i % 1000 == 0 ) - { - sprintf( Buffer, "Adding choice %6d...", i - nNodesBefore ); -// Extra_ProgressBarUpdate( pProgress, i, Buffer ); - } - } - -// Extra_ProgressBarStop( pProgress ); - -Fraig_ManCheckConsistency( pMan ); - - nNodesAfter = Fraig_ManReadNodeNum( pMan ); - printf ( "Nodes before = %6d. Nodes with associative choices = %6d. Increase = %4.2f %%.\n", - nNodesBefore, nNodesAfter, ((float)(nNodesAfter - nNodesBefore)) * 100.0/(nNodesBefore - nInputs) ); - printf ( "Distributive = %d\n", nDistributive ); - -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigFanout.c b/src/sat/fraig/fraigFanout.c deleted file mode 100644 index 0e6c86f8..00000000 --- a/src/sat/fraig/fraigFanout.c +++ /dev/null @@ -1,180 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigFanout.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Procedures to manipulate fanouts of the FRAIG nodes.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigFanout.c,v 1.5 2005/07/08 01:01:31 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -#ifdef FRAIG_ENABLE_FANOUTS - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Add the fanout to the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeAddFaninFanout( Fraig_Node_t * pFanin, Fraig_Node_t * pFanout ) -{ - Fraig_Node_t * pPivot; - - // pFanins is a fanin of pFanout - assert( !Fraig_IsComplement(pFanin) ); - assert( !Fraig_IsComplement(pFanout) ); - assert( Fraig_Regular(pFanout->p1) == pFanin || Fraig_Regular(pFanout->p2) == pFanin ); - - pPivot = pFanin->pFanPivot; - if ( pPivot == NULL ) - { - pFanin->pFanPivot = pFanout; - return; - } - - if ( Fraig_Regular(pPivot->p1) == pFanin ) - { - if ( Fraig_Regular(pFanout->p1) == pFanin ) - { - pFanout->pFanFanin1 = pPivot->pFanFanin1; - pPivot->pFanFanin1 = pFanout; - } - else // if ( Fraig_Regular(pFanout->p2) == pFanin ) - { - pFanout->pFanFanin2 = pPivot->pFanFanin1; - pPivot->pFanFanin1 = pFanout; - } - } - else // if ( Fraig_Regular(pPivot->p2) == pFanin ) - { - assert( Fraig_Regular(pPivot->p2) == pFanin ); - if ( Fraig_Regular(pFanout->p1) == pFanin ) - { - pFanout->pFanFanin1 = pPivot->pFanFanin2; - pPivot->pFanFanin2 = pFanout; - } - else // if ( Fraig_Regular(pFanout->p2) == pFanin ) - { - pFanout->pFanFanin2 = pPivot->pFanFanin2; - pPivot->pFanFanin2 = pFanout; - } - } -} - -/**Function************************************************************* - - Synopsis [Add the fanout to the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeRemoveFaninFanout( Fraig_Node_t * pFanin, Fraig_Node_t * pFanoutToRemove ) -{ - Fraig_Node_t * pFanout, * pFanout2, ** ppFanList; - // start the linked list of fanouts - ppFanList = &pFanin->pFanPivot; - // go through the fanouts - Fraig_NodeForEachFanoutSafe( pFanin, pFanout, pFanout2 ) - { - // skip the fanout-to-remove - if ( pFanout == pFanoutToRemove ) - continue; - // add useful fanouts to the list - *ppFanList = pFanout; - ppFanList = Fraig_NodeReadNextFanoutPlace( pFanin, pFanout ); - } - *ppFanList = NULL; -} - -/**Function************************************************************* - - Synopsis [Transfers fanout to a different node.] - - Description [Assumes that the other node currently has no fanouts.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeTransferFanout( Fraig_Node_t * pNodeFrom, Fraig_Node_t * pNodeTo ) -{ - Fraig_Node_t * pFanout; - assert( pNodeTo->pFanPivot == NULL ); - assert( pNodeTo->pFanFanin1 == NULL ); - assert( pNodeTo->pFanFanin2 == NULL ); - // go through the fanouts and update their fanins - Fraig_NodeForEachFanout( pNodeFrom, pFanout ) - { - if ( Fraig_Regular(pFanout->p1) == pNodeFrom ) - pFanout->p1 = Fraig_NotCond( pNodeTo, Fraig_IsComplement(pFanout->p1) ); - else if ( Fraig_Regular(pFanout->p2) == pNodeFrom ) - pFanout->p2 = Fraig_NotCond( pNodeTo, Fraig_IsComplement(pFanout->p2) ); - } - // move the pointers - pNodeTo->pFanPivot = pNodeFrom->pFanPivot; - pNodeTo->pFanFanin1 = pNodeFrom->pFanFanin1; - pNodeTo->pFanFanin2 = pNodeFrom->pFanFanin2; - pNodeFrom->pFanPivot = NULL; - pNodeFrom->pFanFanin1 = NULL; - pNodeFrom->pFanFanin2 = NULL; -} - -/**Function************************************************************* - - Synopsis [Returns the number of fanouts of a node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeGetFanoutNum( Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pFanout; - int Counter = 0; - Fraig_NodeForEachFanout( pNode, pFanout ) - Counter++; - return Counter; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - -#endif - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigFeed.c b/src/sat/fraig/fraigFeed.c deleted file mode 100644 index 47f946e1..00000000 --- a/src/sat/fraig/fraigFeed.c +++ /dev/null @@ -1,913 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigFeed.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Procedures to support the solver feedback.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigFeed.c,v 1.8 2005/07/08 01:01:31 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -static int Fraig_FeedBackPrepare( Fraig_Man_t * p, int * pModel, Msat_IntVec_t * vVars ); -static int Fraig_FeedBackInsert( Fraig_Man_t * p, int nVarsPi ); -static void Fraig_FeedBackVerify( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); - -static void Fraig_FeedBackCovering( Fraig_Man_t * p, Msat_IntVec_t * vPats ); -static Fraig_NodeVec_t * Fraig_FeedBackCoveringStart( Fraig_Man_t * pMan ); -static int Fraig_GetSmallestColumn( int * pHits, int nHits ); -static int Fraig_GetHittingPattern( unsigned * pSims, int nWords ); -static void Fraig_CancelCoveredColumns( Fraig_NodeVec_t * vColumns, int * pHits, int iPat ); -static void Fraig_FeedBackCheckTable( Fraig_Man_t * p ); -static void Fraig_FeedBackCheckTableF0( Fraig_Man_t * p ); -static void Fraig_ReallocateSimulationInfo( Fraig_Man_t * p ); - - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Initializes the feedback information.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_FeedBackInit( Fraig_Man_t * p ) -{ - p->vCones = Fraig_NodeVecAlloc( 500 ); - p->vPatsReal = Msat_IntVecAlloc( 1000 ); - p->pSimsReal = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - memset( p->pSimsReal, 0, sizeof(unsigned) * p->nWordsDyna ); - p->pSimsTemp = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - p->pSimsDiff = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); -} - -/**Function************************************************************* - - Synopsis [Processes the feedback from teh solver.] - - Description [Array pModel gives the value of each variable in the SAT - solver. Array vVars is the array of integer numbers of variables - involves in this conflict.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_FeedBack( Fraig_Man_t * p, int * pModel, Msat_IntVec_t * vVars, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - int nVarsPi, nWords; - int i, clk = clock(); - - // get the number of PI vars in the feedback (also sets the PI values) - nVarsPi = Fraig_FeedBackPrepare( p, pModel, vVars ); - - // set the PI values - nWords = Fraig_FeedBackInsert( p, nVarsPi ); - assert( p->iWordStart + nWords <= p->nWordsDyna ); - - // resimulates the words from p->iWordStart to iWordStop - for ( i = 1; i < p->vNodes->nSize; i++ ) - if ( Fraig_NodeIsAnd(p->vNodes->pArray[i]) ) - Fraig_NodeSimulate( p->vNodes->pArray[i], p->iWordStart, p->iWordStart + nWords, 0 ); - - if ( p->fDoSparse ) - Fraig_TableRehashF0( p, 0 ); - - if ( !p->fChoicing ) - Fraig_FeedBackVerify( p, pOld, pNew ); - - // if there is no room left, compress the patterns - if ( p->iWordStart + nWords == p->nWordsDyna ) - p->iWordStart = Fraig_FeedBackCompress( p ); - else // otherwise, update the starting word - p->iWordStart += nWords; - -p->timeFeed += clock() - clk; -} - -/**Function************************************************************* - - Synopsis [Get the number and values of the PI variables.] - - Description [Returns the number of PI variables involved in this feedback. - Fills in the internal presence and value data for the primary inputs.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_FeedBackPrepare( Fraig_Man_t * p, int * pModel, Msat_IntVec_t * vVars ) -{ - Fraig_Node_t * pNode; - int i, nVars, nVarsPis, * pVars; - - // clean the presence flag for all PIs - for ( i = 0; i < p->vInputs->nSize; i++ ) - { - pNode = p->vInputs->pArray[i]; - pNode->fFeedUse = 0; - } - - // get the variables involved in the feedback - nVars = Msat_IntVecReadSize(vVars); - pVars = Msat_IntVecReadArray(vVars); - - // set the values for the present variables - nVarsPis = 0; - for ( i = 0; i < nVars; i++ ) - { - pNode = p->vNodes->pArray[ pVars[i] ]; - if ( !Fraig_NodeIsVar(pNode) ) - continue; - // set its value - pNode->fFeedUse = 1; - pNode->fFeedVal = !MSAT_LITSIGN(pModel[pVars[i]]); - nVarsPis++; - } - return nVarsPis; -} - -/**Function************************************************************* - - Synopsis [Inserts the new simulation patterns.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_FeedBackInsert( Fraig_Man_t * p, int nVarsPi ) -{ - Fraig_Node_t * pNode; - int nWords, iPatFlip, nPatFlipLimit, i, w; - int fUseNoPats = 0; - int fUse2Pats = 0; - - // get the number of words - if ( fUse2Pats ) - nWords = FRAIG_NUM_WORDS( 2 * nVarsPi + 1 ); - else if ( fUseNoPats ) - nWords = 1; - else - nWords = FRAIG_NUM_WORDS( nVarsPi + 1 ); - // update the number of words if they do not fit into the simulation info - if ( nWords > p->nWordsDyna - p->iWordStart ) - nWords = p->nWordsDyna - p->iWordStart; - // determine the bound on the flipping bit - nPatFlipLimit = nWords * 32 - 2; - - // mark the real pattern - Msat_IntVecPush( p->vPatsReal, p->iWordStart * 32 ); - // record the real pattern - Fraig_BitStringSetBit( p->pSimsReal, p->iWordStart * 32 ); - - // set the values at the PIs - iPatFlip = 1; - for ( i = 0; i < p->vInputs->nSize; i++ ) - { - pNode = p->vInputs->pArray[i]; - for ( w = p->iWordStart; w < p->iWordStart + nWords; w++ ) - if ( !pNode->fFeedUse ) - pNode->puSimD[w] = FRAIG_RANDOM_UNSIGNED; - else if ( pNode->fFeedVal ) - pNode->puSimD[w] = FRAIG_FULL; - else // if ( !pNode->fFeedVal ) - pNode->puSimD[w] = 0; - - if ( fUse2Pats ) - { - // flip two patterns - if ( pNode->fFeedUse && 2 * iPatFlip < nPatFlipLimit ) - { - Fraig_BitStringXorBit( pNode->puSimD + p->iWordStart, 2 * iPatFlip - 1 ); - Fraig_BitStringXorBit( pNode->puSimD + p->iWordStart, 2 * iPatFlip ); - Fraig_BitStringXorBit( pNode->puSimD + p->iWordStart, 2 * iPatFlip + 1 ); - iPatFlip++; - } - } - else if ( fUseNoPats ) - { - } - else - { - // flip the diagonal - if ( pNode->fFeedUse && iPatFlip < nPatFlipLimit ) - { - Fraig_BitStringXorBit( pNode->puSimD + p->iWordStart, iPatFlip ); - iPatFlip++; - // Extra_PrintBinary( stdout, &pNode->puSimD, 45 ); printf( "\n" ); - } - } - // clean the use mask - pNode->fFeedUse = 0; - - // add the info to the D hash value of the PIs - for ( w = p->iWordStart; w < p->iWordStart + nWords; w++ ) - pNode->uHashD ^= pNode->puSimD[w] * s_FraigPrimes[w]; - - } - return nWords; -} - - -/**Function************************************************************* - - Synopsis [Checks that the SAT solver pattern indeed distinquishes the nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_FeedBackVerify( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - int fValue1, fValue2, iPat; - iPat = Msat_IntVecReadEntry( p->vPatsReal, Msat_IntVecReadSize(p->vPatsReal)-1 ); - fValue1 = (Fraig_BitStringHasBit( pOld->puSimD, iPat )); - fValue2 = (Fraig_BitStringHasBit( pNew->puSimD, iPat )); -/* -Fraig_PrintNode( p, pOld ); -printf( "\n" ); -Fraig_PrintNode( p, pNew ); -printf( "\n" ); -*/ -// assert( fValue1 != fValue2 ); -} - -/**Function************************************************************* - - Synopsis [Compress the simulation patterns.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_FeedBackCompress( Fraig_Man_t * p ) -{ - unsigned * pSims; - unsigned uHash; - int i, w, t, nPats, * pPats; - int fPerformChecks = (p->nBTLimit == -1); - - // solve the covering problem - if ( fPerformChecks ) - { - Fraig_FeedBackCheckTable( p ); - if ( p->fDoSparse ) - Fraig_FeedBackCheckTableF0( p ); - } - - // solve the covering problem - Fraig_FeedBackCovering( p, p->vPatsReal ); - - - // get the number of additional patterns - nPats = Msat_IntVecReadSize( p->vPatsReal ); - pPats = Msat_IntVecReadArray( p->vPatsReal ); - // get the new starting word - p->iWordStart = FRAIG_NUM_WORDS( p->iPatsPerm + nPats ); - - // set the simulation info for the PIs - for ( i = 0; i < p->vInputs->nSize; i++ ) - { - // get hold of the simulation info for this PI - pSims = p->vInputs->pArray[i]->puSimD; - // clean the storage for the new patterns - for ( w = p->iWordPerm; w < p->iWordStart; w++ ) - p->pSimsTemp[w] = 0; - // set the patterns - for ( t = 0; t < nPats; t++ ) - if ( Fraig_BitStringHasBit( pSims, pPats[t] ) ) - { - // check if this pattern falls into temporary storage - if ( p->iPatsPerm + t < p->iWordPerm * 32 ) - Fraig_BitStringSetBit( pSims, p->iPatsPerm + t ); - else - Fraig_BitStringSetBit( p->pSimsTemp, p->iPatsPerm + t ); - } - // copy the pattern - for ( w = p->iWordPerm; w < p->iWordStart; w++ ) - pSims[w] = p->pSimsTemp[w]; - // recompute the hashing info - uHash = 0; - for ( w = 0; w < p->iWordStart; w++ ) - uHash ^= pSims[w] * s_FraigPrimes[w]; - p->vInputs->pArray[i]->uHashD = uHash; - } - - // update info about the permanently stored patterns - p->iWordPerm = p->iWordStart; - p->iPatsPerm += nPats; - assert( p->iWordPerm == FRAIG_NUM_WORDS( p->iPatsPerm ) ); - - // resimulate and recompute the hash values - for ( i = 1; i < p->vNodes->nSize; i++ ) - if ( Fraig_NodeIsAnd(p->vNodes->pArray[i]) ) - { - p->vNodes->pArray[i]->uHashD = 0; - Fraig_NodeSimulate( p->vNodes->pArray[i], 0, p->iWordPerm, 0 ); - } - - // double-check that the nodes are still distinguished - if ( fPerformChecks ) - Fraig_FeedBackCheckTable( p ); - - // rehash the values in the F0 table - if ( p->fDoSparse ) - { - Fraig_TableRehashF0( p, 0 ); - if ( fPerformChecks ) - Fraig_FeedBackCheckTableF0( p ); - } - - // check if we need to resize the simulation info - // if less than FRAIG_WORDS_STORE words are left, reallocate simulation info - if ( p->iWordPerm + FRAIG_WORDS_STORE > p->nWordsDyna ) - Fraig_ReallocateSimulationInfo( p ); - - // set the real patterns - Msat_IntVecClear( p->vPatsReal ); - memset( p->pSimsReal, 0, sizeof(unsigned)*p->nWordsDyna ); - for ( w = 0; w < p->iWordPerm; w++ ) - p->pSimsReal[w] = FRAIG_FULL; - if ( p->iPatsPerm % 32 > 0 ) - p->pSimsReal[p->iWordPerm-1] = FRAIG_MASK( p->iPatsPerm % 32 ); -// printf( "The number of permanent words = %d.\n", p->iWordPerm ); - return p->iWordStart; -} - - - - -/**Function************************************************************* - - Synopsis [Checks the correctness of the functional simulation table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_FeedBackCovering( Fraig_Man_t * p, Msat_IntVec_t * vPats ) -{ - Fraig_NodeVec_t * vColumns; - unsigned * pSims; - int * pHits, iPat, iCol, i; - int nOnesTotal, nSolStarting; - int fVeryVerbose = 0; - - // collect the pairs to be distinguished - vColumns = Fraig_FeedBackCoveringStart( p ); - // collect the number of 1s in each simulation vector - nOnesTotal = 0; - pHits = ABC_ALLOC( int, vColumns->nSize ); - for ( i = 0; i < vColumns->nSize; i++ ) - { - pSims = (unsigned *)vColumns->pArray[i]; - pHits[i] = Fraig_BitStringCountOnes( pSims, p->iWordStart ); - nOnesTotal += pHits[i]; -// assert( pHits[i] > 0 ); - } - - // go through the patterns - nSolStarting = Msat_IntVecReadSize(vPats); - while ( (iCol = Fraig_GetSmallestColumn( pHits, vColumns->nSize )) != -1 ) - { - // find the pattern, which hits this column - iPat = Fraig_GetHittingPattern( (unsigned *)vColumns->pArray[iCol], p->iWordStart ); - // cancel the columns covered by this pattern - Fraig_CancelCoveredColumns( vColumns, pHits, iPat ); - // save the pattern - Msat_IntVecPush( vPats, iPat ); - } - - // free the set of columns - for ( i = 0; i < vColumns->nSize; i++ ) - Fraig_MemFixedEntryRecycle( p->mmSims, (char *)vColumns->pArray[i] ); - - // print stats related to the covering problem - if ( p->fVerbose && fVeryVerbose ) - { - printf( "%3d\\%3d\\%3d ", p->nWordsRand, p->nWordsDyna, p->iWordPerm ); - printf( "Col (pairs) = %5d. ", vColumns->nSize ); - printf( "Row (pats) = %5d. ", p->iWordStart * 32 ); - printf( "Dns = %6.2f %%. ", vColumns->nSize==0? 0.0 : 100.0 * nOnesTotal / vColumns->nSize / p->iWordStart / 32 ); - printf( "Sol = %3d (%3d). ", Msat_IntVecReadSize(vPats), nSolStarting ); - printf( "\n" ); - } - Fraig_NodeVecFree( vColumns ); - ABC_FREE( pHits ); -} - - -/**Function************************************************************* - - Synopsis [Checks the correctness of the functional simulation table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_FeedBackCoveringStart( Fraig_Man_t * p ) -{ - Fraig_NodeVec_t * vColumns; - Fraig_HashTable_t * pT = p->pTableF; - Fraig_Node_t * pEntF, * pEntD; - unsigned * pSims; - unsigned * pUnsigned1, * pUnsigned2; - int i, k, m, w;//, nOnes; - - // start the set of columns - vColumns = Fraig_NodeVecAlloc( 100 ); - - // go through the pairs of nodes to be distinguished - for ( i = 0; i < pT->nBins; i++ ) - Fraig_TableBinForEachEntryF( pT->pBins[i], pEntF ) - { - p->vCones->nSize = 0; - Fraig_TableBinForEachEntryD( pEntF, pEntD ) - Fraig_NodeVecPush( p->vCones, pEntD ); - if ( p->vCones->nSize == 1 ) - continue; - //////////////////////////////// bug fix by alanmi, September 14, 2006 - if ( p->vCones->nSize > 20 ) - continue; - //////////////////////////////// - - for ( k = 0; k < p->vCones->nSize; k++ ) - for ( m = k+1; m < p->vCones->nSize; m++ ) - { - if ( !Fraig_CompareSimInfoUnderMask( p->vCones->pArray[k], p->vCones->pArray[m], p->iWordStart, 0, p->pSimsReal ) ) - continue; - - // primary simulation patterns (counter-examples) cannot distinguish this pair - // get memory to store the feasible simulation patterns - pSims = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - // find the pattern that distinguish this column, exept the primary ones - pUnsigned1 = p->vCones->pArray[k]->puSimD; - pUnsigned2 = p->vCones->pArray[m]->puSimD; - for ( w = 0; w < p->iWordStart; w++ ) - pSims[w] = (pUnsigned1[w] ^ pUnsigned2[w]) & ~p->pSimsReal[w]; - // store the pattern - Fraig_NodeVecPush( vColumns, (Fraig_Node_t *)pSims ); -// nOnes = Fraig_BitStringCountOnes(pSims, p->iWordStart); -// assert( nOnes > 0 ); - } - } - - // if the flag is not set, do not consider sparse nodes in p->pTableF0 - if ( !p->fDoSparse ) - return vColumns; - - // recalculate their hash values based on p->pSimsReal - pT = p->pTableF0; - for ( i = 0; i < pT->nBins; i++ ) - Fraig_TableBinForEachEntryF( pT->pBins[i], pEntF ) - { - pSims = pEntF->puSimD; - pEntF->uHashD = 0; - for ( w = 0; w < p->iWordStart; w++ ) - pEntF->uHashD ^= (pSims[w] & p->pSimsReal[w]) * s_FraigPrimes[w]; - } - - // rehash the table using these values - Fraig_TableRehashF0( p, 1 ); - - // collect the classes of equivalent node pairs - for ( i = 0; i < pT->nBins; i++ ) - Fraig_TableBinForEachEntryF( pT->pBins[i], pEntF ) - { - p->vCones->nSize = 0; - Fraig_TableBinForEachEntryD( pEntF, pEntD ) - Fraig_NodeVecPush( p->vCones, pEntD ); - if ( p->vCones->nSize == 1 ) - continue; - - // primary simulation patterns (counter-examples) cannot distinguish all these pairs - for ( k = 0; k < p->vCones->nSize; k++ ) - for ( m = k+1; m < p->vCones->nSize; m++ ) - { - // get memory to store the feasible simulation patterns - pSims = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - // find the patterns that are not distinquished - pUnsigned1 = p->vCones->pArray[k]->puSimD; - pUnsigned2 = p->vCones->pArray[m]->puSimD; - for ( w = 0; w < p->iWordStart; w++ ) - pSims[w] = (pUnsigned1[w] ^ pUnsigned2[w]) & ~p->pSimsReal[w]; - // store the pattern - Fraig_NodeVecPush( vColumns, (Fraig_Node_t *)pSims ); -// nOnes = Fraig_BitStringCountOnes(pSims, p->iWordStart); -// assert( nOnes > 0 ); - } - } - return vColumns; -} - -/**Function************************************************************* - - Synopsis [Selects the column, which has the smallest number of hits.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_GetSmallestColumn( int * pHits, int nHits ) -{ - int i, iColMin = -1, nHitsMin = 1000000; - for ( i = 0; i < nHits; i++ ) - { - // skip covered columns - if ( pHits[i] == 0 ) - continue; - // take the column if it can only be covered by one pattern - if ( pHits[i] == 1 ) - return i; - // find the column, which requires the smallest number of patterns - if ( nHitsMin > pHits[i] ) - { - nHitsMin = pHits[i]; - iColMin = i; - } - } - return iColMin; -} - -/**Function************************************************************* - - Synopsis [Select the pattern, which hits this column.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_GetHittingPattern( unsigned * pSims, int nWords ) -{ - int i, b; - for ( i = 0; i < nWords; i++ ) - { - if ( pSims[i] == 0 ) - continue; - for ( b = 0; b < 32; b++ ) - if ( pSims[i] & (1 << b) ) - return i * 32 + b; - } - return -1; -} - -/**Function************************************************************* - - Synopsis [Cancel covered patterns.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_CancelCoveredColumns( Fraig_NodeVec_t * vColumns, int * pHits, int iPat ) -{ - unsigned * pSims; - int i; - for ( i = 0; i < vColumns->nSize; i++ ) - { - pSims = (unsigned *)vColumns->pArray[i]; - if ( Fraig_BitStringHasBit( pSims, iPat ) ) - pHits[i] = 0; - } -} - - -/**Function************************************************************* - - Synopsis [Checks the correctness of the functional simulation table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_FeedBackCheckTable( Fraig_Man_t * p ) -{ - Fraig_HashTable_t * pT = p->pTableF; - Fraig_Node_t * pEntF, * pEntD; - int i, k, m, nPairs; - - nPairs = 0; - for ( i = 0; i < pT->nBins; i++ ) - Fraig_TableBinForEachEntryF( pT->pBins[i], pEntF ) - { - p->vCones->nSize = 0; - Fraig_TableBinForEachEntryD( pEntF, pEntD ) - Fraig_NodeVecPush( p->vCones, pEntD ); - if ( p->vCones->nSize == 1 ) - continue; - for ( k = 0; k < p->vCones->nSize; k++ ) - for ( m = k+1; m < p->vCones->nSize; m++ ) - { - if ( Fraig_CompareSimInfo( p->vCones->pArray[k], p->vCones->pArray[m], p->iWordStart, 0 ) ) - printf( "Nodes %d and %d have the same D simulation info.\n", - p->vCones->pArray[k]->Num, p->vCones->pArray[m]->Num ); - nPairs++; - } - } -// printf( "\nThe total of %d node pairs have been verified.\n", nPairs ); -} - -/**Function************************************************************* - - Synopsis [Checks the correctness of the functional simulation table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_FeedBackCheckTableF0( Fraig_Man_t * p ) -{ - Fraig_HashTable_t * pT = p->pTableF0; - Fraig_Node_t * pEntF; - int i, k, m, nPairs; - - nPairs = 0; - for ( i = 0; i < pT->nBins; i++ ) - { - p->vCones->nSize = 0; - Fraig_TableBinForEachEntryF( pT->pBins[i], pEntF ) - Fraig_NodeVecPush( p->vCones, pEntF ); - if ( p->vCones->nSize == 1 ) - continue; - for ( k = 0; k < p->vCones->nSize; k++ ) - for ( m = k+1; m < p->vCones->nSize; m++ ) - { - if ( Fraig_CompareSimInfo( p->vCones->pArray[k], p->vCones->pArray[m], p->iWordStart, 0 ) ) - printf( "Nodes %d and %d have the same D simulation info.\n", - p->vCones->pArray[k]->Num, p->vCones->pArray[m]->Num ); - nPairs++; - } - } -// printf( "\nThe total of %d node pairs have been verified.\n", nPairs ); -} - -/**Function************************************************************* - - Synopsis [Doubles the size of simulation info.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ReallocateSimulationInfo( Fraig_Man_t * p ) -{ - Fraig_MemFixed_t * mmSimsNew; // new memory manager for simulation info - Fraig_Node_t * pNode; - unsigned * pSimsNew; - unsigned uSignOld; - int i; - - // allocate a new memory manager - p->nWordsDyna *= 2; - mmSimsNew = Fraig_MemFixedStart( sizeof(unsigned) * (p->nWordsRand + p->nWordsDyna) ); - - // set the new data for the constant node - pNode = p->pConst1; - pNode->puSimR = (unsigned *)Fraig_MemFixedEntryFetch( mmSimsNew ); - pNode->puSimD = pNode->puSimR + p->nWordsRand; - memset( pNode->puSimR, 0, sizeof(unsigned) * p->nWordsRand ); - memset( pNode->puSimD, 0, sizeof(unsigned) * p->nWordsDyna ); - - // copy the simulation info of the PIs - for ( i = 0; i < p->vInputs->nSize; i++ ) - { - pNode = p->vInputs->pArray[i]; - // copy the simulation info - pSimsNew = (unsigned *)Fraig_MemFixedEntryFetch( mmSimsNew ); - memmove( pSimsNew, pNode->puSimR, sizeof(unsigned) * (p->nWordsRand + p->iWordStart) ); - // attach the new info - pNode->puSimR = pSimsNew; - pNode->puSimD = pNode->puSimR + p->nWordsRand; - // signatures remain without changes - } - - // replace the manager to free up some memory - Fraig_MemFixedStop( p->mmSims, 0 ); - p->mmSims = mmSimsNew; - - // resimulate the internal nodes (this should lead to the same signatures) - for ( i = 1; i < p->vNodes->nSize; i++ ) - { - pNode = p->vNodes->pArray[i]; - if ( !Fraig_NodeIsAnd(pNode) ) - continue; - // allocate memory for the simulation info - pNode->puSimR = (unsigned *)Fraig_MemFixedEntryFetch( mmSimsNew ); - pNode->puSimD = pNode->puSimR + p->nWordsRand; - // derive random simulation info - uSignOld = pNode->uHashR; - pNode->uHashR = 0; - Fraig_NodeSimulate( pNode, 0, p->nWordsRand, 1 ); - assert( uSignOld == pNode->uHashR ); - // derive dynamic simulation info - uSignOld = pNode->uHashD; - pNode->uHashD = 0; - Fraig_NodeSimulate( pNode, 0, p->iWordStart, 0 ); - assert( uSignOld == pNode->uHashD ); - } - - // realloc temporary storage - p->pSimsReal = (unsigned *)Fraig_MemFixedEntryFetch( mmSimsNew ); - memset( p->pSimsReal, 0, sizeof(unsigned) * p->nWordsDyna ); - p->pSimsTemp = (unsigned *)Fraig_MemFixedEntryFetch( mmSimsNew ); - p->pSimsDiff = (unsigned *)Fraig_MemFixedEntryFetch( mmSimsNew ); -} - - -/**Function************************************************************* - - Synopsis [Generated trivial counter example.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int * Fraig_ManAllocCounterExample( Fraig_Man_t * p ) -{ - int * pModel; - pModel = ABC_ALLOC( int, p->vInputs->nSize ); - memset( pModel, 0, sizeof(int) * p->vInputs->nSize ); - return pModel; -} - - -/**Function************************************************************* - - Synopsis [Saves the counter example.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManSimulateBitNode_rec( Fraig_Man_t * p, Fraig_Node_t * pNode ) -{ - int Value0, Value1; - if ( Fraig_NodeIsTravIdCurrent( p, pNode ) ) - return pNode->fMark3; - Fraig_NodeSetTravIdCurrent( p, pNode ); - Value0 = Fraig_ManSimulateBitNode_rec( p, Fraig_Regular(pNode->p1) ); - Value1 = Fraig_ManSimulateBitNode_rec( p, Fraig_Regular(pNode->p2) ); - Value0 ^= Fraig_IsComplement(pNode->p1); - Value1 ^= Fraig_IsComplement(pNode->p2); - pNode->fMark3 = Value0 & Value1; - return pNode->fMark3; -} - -/**Function************************************************************* - - Synopsis [Simulates one bit.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManSimulateBitNode( Fraig_Man_t * p, Fraig_Node_t * pNode, int * pModel ) -{ - int fCompl, RetValue, i; - // set the PI values - Fraig_ManIncrementTravId( p ); - for ( i = 0; i < p->vInputs->nSize; i++ ) - { - Fraig_NodeSetTravIdCurrent( p, p->vInputs->pArray[i] ); - p->vInputs->pArray[i]->fMark3 = pModel[i]; - } - // perform the traversal - fCompl = Fraig_IsComplement(pNode); - RetValue = Fraig_ManSimulateBitNode_rec( p, Fraig_Regular(pNode) ); - return fCompl ^ RetValue; -} - - -/**Function************************************************************* - - Synopsis [Saves the counter example.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int * Fraig_ManSaveCounterExample( Fraig_Man_t * p, Fraig_Node_t * pNode ) -{ - int * pModel; - int iPattern; - int i, fCompl; - - // the node can be complemented - fCompl = Fraig_IsComplement(pNode); - // because we compare with constant 0, p->pConst1 should also be complemented - fCompl = !fCompl; - - // derive the model - pModel = Fraig_ManAllocCounterExample( p ); - iPattern = Fraig_FindFirstDiff( p->pConst1, Fraig_Regular(pNode), fCompl, p->nWordsRand, 1 ); - if ( iPattern >= 0 ) - { - for ( i = 0; i < p->vInputs->nSize; i++ ) - if ( Fraig_BitStringHasBit( p->vInputs->pArray[i]->puSimR, iPattern ) ) - pModel[i] = 1; -/* -printf( "SAT solver's pattern:\n" ); -for ( i = 0; i < p->vInputs->nSize; i++ ) - printf( "%d", pModel[i] ); -printf( "\n" ); -*/ - assert( Fraig_ManSimulateBitNode( p, pNode, pModel ) ); - return pModel; - } - iPattern = Fraig_FindFirstDiff( p->pConst1, Fraig_Regular(pNode), fCompl, p->iWordStart, 0 ); - if ( iPattern >= 0 ) - { - for ( i = 0; i < p->vInputs->nSize; i++ ) - if ( Fraig_BitStringHasBit( p->vInputs->pArray[i]->puSimD, iPattern ) ) - pModel[i] = 1; -/* -printf( "SAT solver's pattern:\n" ); -for ( i = 0; i < p->vInputs->nSize; i++ ) - printf( "%d", pModel[i] ); -printf( "\n" ); -*/ - assert( Fraig_ManSimulateBitNode( p, pNode, pModel ) ); - return pModel; - } - ABC_FREE( pModel ); - return NULL; -} - - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigInt.h b/src/sat/fraig/fraigInt.h deleted file mode 100644 index 7cc2194a..00000000 --- a/src/sat/fraig/fraigInt.h +++ /dev/null @@ -1,434 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigInt.h] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Internal declarations of the FRAIG package.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigInt.h,v 1.15 2005/07/08 01:01:31 alanmi Exp $] - -***********************************************************************/ - -#ifndef __FRAIG_INT_H__ -#define __FRAIG_INT_H__ - - -//////////////////////////////////////////////////////////////////////// -/// INCLUDES /// -//////////////////////////////////////////////////////////////////////// - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <assert.h> -#include <time.h> - -#include "abc_global.h" -#include "fraig.h" -#include "msat.h" - -ABC_NAMESPACE_HEADER_START - - -//////////////////////////////////////////////////////////////////////// -/// PARAMETERS /// -//////////////////////////////////////////////////////////////////////// - -/* - The AIG node policy: - - Each node has its main number (pNode->Num) - This is the number of this node in the array of all nodes and its SAT variable number - - The PI nodes are stored along with other nodes - Additionally, PI nodes have a PI number, by which they are stored in the PI node array - - The constant node is has number 0 and is also stored in the array -*/ - -//////////////////////////////////////////////////////////////////////// -/// MACRO DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -// enable this macro to support the fanouts -#define FRAIG_ENABLE_FANOUTS -#define FRAIG_PATTERNS_RANDOM 2048 // should not be less than 128 and more than 32768 (2^15) -#define FRAIG_PATTERNS_DYNAMIC 2048 // should not be less than 256 and more than 32768 (2^15) -#define FRAIG_MAX_PRIMES 1024 // the maximum number of primes used for hashing - -// this parameter determines when simulation info is extended -// it will be extended when the free storage in the dynamic simulation -// info is less or equal to this number of words (FRAIG_WORDS_STORE) -// this is done because if the free storage for dynamic simulation info -// is not sufficient, computation becomes inefficient -#define FRAIG_WORDS_STORE 5 - -// the bit masks -#define FRAIG_MASK(n) ((~((unsigned)0)) >> (32-(n))) -#define FRAIG_FULL (~((unsigned)0)) -#define FRAIG_NUM_WORDS(n) (((n)>>5) + (((n)&31) > 0)) - -// generating random unsigned (#define RAND_MAX 0x7fff) -#define FRAIG_RANDOM_UNSIGNED ((((unsigned)rand()) << 24) ^ (((unsigned)rand()) << 12) ^ ((unsigned)rand())) - -// macros to get hold of the bits in a bit string -#define Fraig_BitStringSetBit(p,i) ((p)[(i)>>5] |= (1<<((i) & 31))) -#define Fraig_BitStringXorBit(p,i) ((p)[(i)>>5] ^= (1<<((i) & 31))) -#define Fraig_BitStringHasBit(p,i) (((p)[(i)>>5] & (1<<((i) & 31))) > 0) - -// macros to get hold of the bits in the support info -//#define Fraig_NodeSetVarStr(p,i) (Fraig_Regular(p)->pSuppStr[((i)%FRAIG_SUPP_SIGN)>>5] |= (1<<(((i)%FRAIG_SUPP_SIGN) & 31))) -//#define Fraig_NodeHasVarStr(p,i) ((Fraig_Regular(p)->pSuppStr[((i)%FRAIG_SUPP_SIGN)>>5] & (1<<(((i)%FRAIG_SUPP_SIGN) & 31))) > 0) -#define Fraig_NodeSetVarStr(p,i) Fraig_BitStringSetBit(Fraig_Regular(p)->pSuppStr,i) -#define Fraig_NodeHasVarStr(p,i) Fraig_BitStringHasBit(Fraig_Regular(p)->pSuppStr,i) - -// copied from "extra.h" for stand-aloneness -#define Fraig_PrintTime(a,t) printf( "%s = ", (a) ); printf( "%6.2f sec\n", (float)(t)/(float)(CLOCKS_PER_SEC) ) - -#define Fraig_HashKey2(a,b,TSIZE) (((ABC_PTRUINT_T)(a) + (ABC_PTRUINT_T)(b) * 12582917) % TSIZE) -//#define Fraig_HashKey2(a,b,TSIZE) (( ((unsigned)(a)->Num * 19) ^ ((unsigned)(b)->Num * 1999) ) % TSIZE) -//#define Fraig_HashKey2(a,b,TSIZE) ( ((unsigned)((a)->Num + (b)->Num) * ((a)->Num + (b)->Num + 1) / 2) % TSIZE) -// the other two hash functions give bad distribution of hash chain lengths (not clear why) - -//////////////////////////////////////////////////////////////////////// -/// STRUCTURE DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -typedef struct Fraig_MemFixed_t_ Fraig_MemFixed_t; - -// the mapping manager -struct Fraig_ManStruct_t_ -{ - // the AIG nodes - Fraig_NodeVec_t * vInputs; // the array of primary inputs - Fraig_NodeVec_t * vNodes; // the array of all nodes, including primary inputs - Fraig_NodeVec_t * vOutputs; // the array of primary outputs (some internal nodes) - Fraig_Node_t * pConst1; // the pointer to the constant node (vNodes->pArray[0]) - - // info about the original circuit - char ** ppInputNames; // the primary input names - char ** ppOutputNames; // the primary output names - - // various hash-tables - Fraig_HashTable_t * pTableS; // hashing by structure - Fraig_HashTable_t * pTableF; // hashing by simulation info - Fraig_HashTable_t * pTableF0; // hashing by simulation info (sparse functions) - - // parameters - int nWordsRand; // the number of words of random simulation info - int nWordsDyna; // the number of words of dynamic simulation info - int nBTLimit; // the max number of backtracks to perform - int nSeconds; // the runtime limit for the miter proof - int fFuncRed; // performs only one level hashing - int fFeedBack; // enables solver feedback - int fDist1Pats; // enables solver feedback - int fDoSparse; // performs equiv tests for sparse functions - int fChoicing; // enables recording structural choices - int fTryProve; // tries to solve the final miter - int fVerbose; // the verbosiness flag - int fVerboseP; // the verbosiness flag - ABC_INT64_T nInspLimit; // the inspection limit - - int nTravIds; // the traversal counter - int nTravIds2; // the traversal counter - - // info related to the solver feedback - int iWordStart; // the first word to use for simulation - int iWordPerm; // the number of words stored permanently - int iPatsPerm; // the number of patterns stored permanently - Fraig_NodeVec_t * vCones; // the temporary array of internal variables - Msat_IntVec_t * vPatsReal; // the array of real pattern numbers - unsigned * pSimsReal; // used for simulation patterns - unsigned * pSimsDiff; // used for simulation patterns - unsigned * pSimsTemp; // used for simulation patterns - - // the support information - int nSuppWords; - unsigned ** pSuppS; - unsigned ** pSuppF; - - // the memory managers - Fraig_MemFixed_t * mmNodes; // the memory manager for nodes - Fraig_MemFixed_t * mmSims; // the memory manager for simulation info - - // solving the SAT problem - Msat_Solver_t * pSat; // the SAT solver - Msat_IntVec_t * vProj; // the temporary array of projection vars - int nSatNums; // the counter of SAT variables - int * pModel; // the assignment, which satisfies the miter - // these arrays belong to the solver - Msat_IntVec_t * vVarsInt; // the temporary array of variables - Msat_ClauseVec_t * vAdjacents; // the temporary storage for connectivity - Msat_IntVec_t * vVarsUsed; // the array marking vars appearing in the cone - - // various statistic variables - int nSatCalls; // the number of times equivalence checking was called - int nSatProof; // the number of times a proof was found - int nSatCounter; // the number of times a counter example was found - int nSatFails; // the number of times the SAT solver failed to complete due to resource limit or prediction - int nSatFailsReal; // the number of times the SAT solver failed to complete due to resource limit - - int nSatCallsImp; // the number of times equivalence checking was called - int nSatProofImp; // the number of times a proof was found - int nSatCounterImp;// the number of times a counter example was found - int nSatFailsImp; // the number of times the SAT solver failed to complete - - int nSatZeros; // the number of times the simulation vector is zero - int nSatSupps; // the number of times the support info was useful - int nRefErrors; // the number of ref counting errors - int nImplies; // the number of implication cases - int nSatImpls; // the number of implication SAT calls - int nVarsClauses; // the number of variables with clauses - int nSimplifies0; - int nSimplifies1; - int nImplies0; - int nImplies1; - - // runtime statistics - int timeToAig; // time to transfer to the mapping structure - int timeSims; // time to compute k-feasible cuts - int timeTrav; // time to traverse the network - int timeFeed; // time for solver feedback (recording and resimulating) - int timeImply; // time to analyze implications - int timeSat; // time to compute the truth table for each cut - int timeToNet; // time to transfer back to the network - int timeTotal; // the total mapping time - int time1; // time to perform one task - int time2; // time to perform another task - int time3; // time to perform another task - int time4; // time to perform another task -}; - -// the mapping node -struct Fraig_NodeStruct_t_ -{ - // various numbers associated with the node - int Num; // the unique number (SAT var number) of this node - int NumPi; // if the node is a PI, this is its variable number - int Level; // the level of the node - int nRefs; // the number of references of the node - int TravId; // the traversal ID (use to avoid cleaning marks) - int TravId2; // the traversal ID (use to avoid cleaning marks) - - // general information about the node - unsigned fInv : 1; // the mark to show that simulation info is complemented - unsigned fNodePo : 1; // the mark used for primary outputs - unsigned fClauses : 1; // the clauses for this node are loaded - unsigned fMark0 : 1; // the mark used for traversals - unsigned fMark1 : 1; // the mark used for traversals - unsigned fMark2 : 1; // the mark used for traversals - unsigned fMark3 : 1; // the mark used for traversals - unsigned fFeedUse : 1; // the presence of the variable in the feedback - unsigned fFeedVal : 1; // the value of the variable in the feedback - unsigned fFailTfo : 1; // the node is in the TFO of the failed SAT run - unsigned nFanouts : 2; // the indicator of fanouts (none, one, or many) - unsigned nOnes : 20; // the number of 1's in the random sim info - - // the children of the node - Fraig_Node_t * p1; // the first child - Fraig_Node_t * p2; // the second child - Fraig_NodeVec_t * vFanins; // the fanins of the supergate rooted at this node -// Fraig_NodeVec_t * vFanouts; // the fanouts of the supergate rooted at this node - - // various linked lists - Fraig_Node_t * pNextS; // the next node in the structural hash table - Fraig_Node_t * pNextF; // the next node in the functional (simulation) hash table - Fraig_Node_t * pNextD; // the next node in the list of nodes based on dynamic simulation - Fraig_Node_t * pNextE; // the next structural choice (functionally-equivalent node) - Fraig_Node_t * pRepr; // the canonical functional representative of the node - - // simulation data - unsigned uHashR; // the hash value for random information - unsigned uHashD; // the hash value for dynamic information - unsigned * puSimR; // the simulation information (random) - unsigned * puSimD; // the simulation information (dynamic) - - // misc information - Fraig_Node_t * pData0; // temporary storage for the corresponding network node - Fraig_Node_t * pData1; // temporary storage for the corresponding network node - -#ifdef FRAIG_ENABLE_FANOUTS - // representation of node's fanouts - Fraig_Node_t * pFanPivot; // the first fanout of this node - Fraig_Node_t * pFanFanin1; // the next fanout of p1 - Fraig_Node_t * pFanFanin2; // the next fanout of p2 -#endif -}; - -// the vector of nodes -struct Fraig_NodeVecStruct_t_ -{ - int nCap; // the number of allocated entries - int nSize; // the number of entries in the array - Fraig_Node_t ** pArray; // the array of nodes -}; - -// the hash table -struct Fraig_HashTableStruct_t_ -{ - Fraig_Node_t ** pBins; // the table bins - int nBins; // the size of the table - int nEntries; // the total number of entries in the table -}; - -// getting hold of the next fanout of the node -#define Fraig_NodeReadNextFanout( pNode, pFanout ) \ - ( ( pFanout == NULL )? NULL : \ - ((Fraig_Regular((pFanout)->p1) == (pNode))? \ - (pFanout)->pFanFanin1 : (pFanout)->pFanFanin2) ) -// getting hold of the place where the next fanout will be attached -#define Fraig_NodeReadNextFanoutPlace( pNode, pFanout ) \ - ( (Fraig_Regular((pFanout)->p1) == (pNode))? \ - &(pFanout)->pFanFanin1 : &(pFanout)->pFanFanin2 ) -// iterator through the fanouts of the node -#define Fraig_NodeForEachFanout( pNode, pFanout ) \ - for ( pFanout = (pNode)->pFanPivot; pFanout; \ - pFanout = Fraig_NodeReadNextFanout(pNode, pFanout) ) -// safe iterator through the fanouts of the node -#define Fraig_NodeForEachFanoutSafe( pNode, pFanout, pFanout2 ) \ - for ( pFanout = (pNode)->pFanPivot, \ - pFanout2 = Fraig_NodeReadNextFanout(pNode, pFanout); \ - pFanout; \ - pFanout = pFanout2, \ - pFanout2 = Fraig_NodeReadNextFanout(pNode, pFanout) ) - -// iterators through the entries in the linked lists of nodes -// the list of nodes in the structural hash table -#define Fraig_TableBinForEachEntryS( pBin, pEnt ) \ - for ( pEnt = pBin; \ - pEnt; \ - pEnt = pEnt->pNextS ) -#define Fraig_TableBinForEachEntrySafeS( pBin, pEnt, pEnt2 ) \ - for ( pEnt = pBin, \ - pEnt2 = pEnt? pEnt->pNextS: NULL; \ - pEnt; \ - pEnt = pEnt2, \ - pEnt2 = pEnt? pEnt->pNextS: NULL ) -// the list of nodes in the functional (simulation) hash table -#define Fraig_TableBinForEachEntryF( pBin, pEnt ) \ - for ( pEnt = pBin; \ - pEnt; \ - pEnt = pEnt->pNextF ) -#define Fraig_TableBinForEachEntrySafeF( pBin, pEnt, pEnt2 ) \ - for ( pEnt = pBin, \ - pEnt2 = pEnt? pEnt->pNextF: NULL; \ - pEnt; \ - pEnt = pEnt2, \ - pEnt2 = pEnt? pEnt->pNextF: NULL ) -// the list of nodes with the same simulation and different functionality -#define Fraig_TableBinForEachEntryD( pBin, pEnt ) \ - for ( pEnt = pBin; \ - pEnt; \ - pEnt = pEnt->pNextD ) -#define Fraig_TableBinForEachEntrySafeD( pBin, pEnt, pEnt2 ) \ - for ( pEnt = pBin, \ - pEnt2 = pEnt? pEnt->pNextD: NULL; \ - pEnt; \ - pEnt = pEnt2, \ - pEnt2 = pEnt? pEnt->pNextD: NULL ) -// the list of nodes with the same functionality -#define Fraig_TableBinForEachEntryE( pBin, pEnt ) \ - for ( pEnt = pBin; \ - pEnt; \ - pEnt = pEnt->pNextE ) -#define Fraig_TableBinForEachEntrySafeE( pBin, pEnt, pEnt2 ) \ - for ( pEnt = pBin, \ - pEnt2 = pEnt? pEnt->pNextE: NULL; \ - pEnt; \ - pEnt = pEnt2, \ - pEnt2 = pEnt? pEnt->pNextE: NULL ) - -//////////////////////////////////////////////////////////////////////// -/// GLOBAL VARIABLES /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/*=== fraigCanon.c =============================================================*/ -extern Fraig_Node_t * Fraig_NodeAndCanon( Fraig_Man_t * pMan, Fraig_Node_t * p1, Fraig_Node_t * p2 ); -/*=== fraigFanout.c =============================================================*/ -extern void Fraig_NodeAddFaninFanout( Fraig_Node_t * pFanin, Fraig_Node_t * pFanout ); -extern void Fraig_NodeRemoveFaninFanout( Fraig_Node_t * pFanin, Fraig_Node_t * pFanoutToRemove ); -extern int Fraig_NodeGetFanoutNum( Fraig_Node_t * pNode ); -/*=== fraigFeed.c =============================================================*/ -extern void Fraig_FeedBackInit( Fraig_Man_t * p ); -extern void Fraig_FeedBack( Fraig_Man_t * p, int * pModel, Msat_IntVec_t * vVars, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -extern void Fraig_FeedBackTest( Fraig_Man_t * p ); -extern int Fraig_FeedBackCompress( Fraig_Man_t * p ); -extern int * Fraig_ManAllocCounterExample( Fraig_Man_t * p ); -extern int * Fraig_ManSaveCounterExample( Fraig_Man_t * p, Fraig_Node_t * pNode ); -/*=== fraigMan.c =============================================================*/ -extern void Fraig_ManCreateSolver( Fraig_Man_t * p ); -/*=== fraigMem.c =============================================================*/ -extern Fraig_MemFixed_t * Fraig_MemFixedStart( int nEntrySize ); -extern void Fraig_MemFixedStop( Fraig_MemFixed_t * p, int fVerbose ); -extern char * Fraig_MemFixedEntryFetch( Fraig_MemFixed_t * p ); -extern void Fraig_MemFixedEntryRecycle( Fraig_MemFixed_t * p, char * pEntry ); -extern void Fraig_MemFixedRestart( Fraig_MemFixed_t * p ); -extern int Fraig_MemFixedReadMemUsage( Fraig_MemFixed_t * p ); -/*=== fraigNode.c =============================================================*/ -extern Fraig_Node_t * Fraig_NodeCreateConst( Fraig_Man_t * p ); -extern Fraig_Node_t * Fraig_NodeCreatePi( Fraig_Man_t * p ); -extern Fraig_Node_t * Fraig_NodeCreate( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ); -extern void Fraig_NodeSimulate( Fraig_Node_t * pNode, int iWordStart, int iWordStop, int fUseRand ); -/*=== fraigPrime.c =============================================================*/ -extern int s_FraigPrimes[FRAIG_MAX_PRIMES]; -extern unsigned int Cudd_PrimeFraig( unsigned int p ); -/*=== fraigSat.c ===============================================================*/ -extern int Fraig_NodeIsImplication( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew, int nBTLimit ); -/*=== fraigTable.c =============================================================*/ -extern Fraig_HashTable_t * Fraig_HashTableCreate( int nSize ); -extern void Fraig_HashTableFree( Fraig_HashTable_t * p ); -extern int Fraig_HashTableLookupS( Fraig_Man_t * pMan, Fraig_Node_t * p1, Fraig_Node_t * p2, Fraig_Node_t ** ppNodeRes ); -extern Fraig_Node_t * Fraig_HashTableLookupF( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -extern Fraig_Node_t * Fraig_HashTableLookupF0( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -extern void Fraig_HashTableInsertF0( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -extern int Fraig_CompareSimInfo( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand ); -extern int Fraig_CompareSimInfoUnderMask( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand, unsigned * puMask ); -extern int Fraig_FindFirstDiff( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int fCompl, int iWordLast, int fUseRand ); -extern void Fraig_CollectXors( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand, unsigned * puMask ); -extern void Fraig_TablePrintStatsS( Fraig_Man_t * pMan ); -extern void Fraig_TablePrintStatsF( Fraig_Man_t * pMan ); -extern void Fraig_TablePrintStatsF0( Fraig_Man_t * pMan ); -extern int Fraig_TableRehashF0( Fraig_Man_t * pMan, int fLinkEquiv ); -/*=== fraigUtil.c ===============================================================*/ -extern int Fraig_NodeCountPis( Msat_IntVec_t * vVars, int nVarsPi ); -extern int Fraig_NodeCountSuppVars( Fraig_Man_t * p, Fraig_Node_t * pNode, int fSuppStr ); -extern int Fraig_NodesCompareSupps( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -extern int Fraig_NodeAndSimpleCase_rec( Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -extern int Fraig_NodeIsExorType( Fraig_Node_t * pNode ); -extern void Fraig_ManSelectBestChoice( Fraig_Man_t * p ); -extern int Fraig_BitStringCountOnes( unsigned * pString, int nWords ); -extern void Fraig_PrintBinary( FILE * pFile, unsigned * pSign, int nBits ); -extern int Fraig_NodeIsExorType( Fraig_Node_t * pNode ); -extern int Fraig_NodeIsExor( Fraig_Node_t * pNode ); -extern int Fraig_NodeIsMuxType( Fraig_Node_t * pNode ); -extern Fraig_Node_t * Fraig_NodeRecognizeMux( Fraig_Node_t * pNode, Fraig_Node_t ** ppNodeT, Fraig_Node_t ** ppNodeE ); -extern int Fraig_ManCountExors( Fraig_Man_t * pMan ); -extern int Fraig_ManCountMuxes( Fraig_Man_t * pMan ); -extern int Fraig_NodeSimsContained( Fraig_Man_t * pMan, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2 ); -extern int Fraig_NodeIsInSupergate( Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -extern Fraig_NodeVec_t * Fraig_CollectSupergate( Fraig_Node_t * pNode, int fStopAtMux ); -extern int Fraig_CountPis( Fraig_Man_t * p, Msat_IntVec_t * vVarNums ); -extern void Fraig_ManIncrementTravId( Fraig_Man_t * pMan ); -extern void Fraig_NodeSetTravIdCurrent( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -extern int Fraig_NodeIsTravIdCurrent( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -extern int Fraig_NodeIsTravIdPrevious( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -/*=== fraigVec.c ===============================================================*/ -extern void Fraig_NodeVecSortByRefCount( Fraig_NodeVec_t * p ); - - - -ABC_NAMESPACE_HEADER_END - -#endif - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// diff --git a/src/sat/fraig/fraigMan.c b/src/sat/fraig/fraigMan.c deleted file mode 100644 index ba08d793..00000000 --- a/src/sat/fraig/fraigMan.c +++ /dev/null @@ -1,545 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigMan.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Implementation of the FRAIG manager.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigMan.c,v 1.11 2005/07/08 01:01:31 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -int timeSelect; -int timeAssign; - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Sets the default parameters of the package.] - - Description [This set of parameters is tuned for equivalence checking.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Prove_ParamsSetDefault( Prove_Params_t * pParams ) -{ - // clean the parameter structure - memset( pParams, 0, sizeof(Prove_Params_t) ); - // general parameters - pParams->fUseFraiging = 1; // enables fraiging - pParams->fUseRewriting = 1; // enables rewriting - pParams->fUseBdds = 0; // enables BDD construction when other methods fail - pParams->fVerbose = 0; // prints verbose stats - // iterations - pParams->nItersMax = 6; // the number of iterations - // mitering - pParams->nMiteringLimitStart = 5000; // starting mitering limit - pParams->nMiteringLimitMulti = 2.0; // multiplicative coefficient to increase the limit in each iteration - // rewriting (currently not used) - pParams->nRewritingLimitStart = 3; // the number of rewriting iterations - pParams->nRewritingLimitMulti = 1.0; // multiplicative coefficient to increase the limit in each iteration - // fraiging - pParams->nFraigingLimitStart = 2; // starting backtrack(conflict) limit - pParams->nFraigingLimitMulti = 8.0; // multiplicative coefficient to increase the limit in each iteration - // last-gasp BDD construction - pParams->nBddSizeLimit = 1000000; // the number of BDD nodes when construction is aborted - pParams->fBddReorder = 1; // enables dynamic BDD variable reordering - // last-gasp mitering -// pParams->nMiteringLimitLast = 1000000; // final mitering limit - pParams->nMiteringLimitLast = 0; // final mitering limit - // global SAT solver limits - pParams->nTotalBacktrackLimit = 0; // global limit on the number of backtracks - pParams->nTotalInspectLimit = 0; // global limit on the number of clause inspects -// pParams->nTotalInspectLimit = 100000000; // global limit on the number of clause inspects -} - -/**Function************************************************************* - - Synopsis [Prints out the current values of CEC engine parameters.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Prove_ParamsPrint( Prove_Params_t * pParams ) -{ - printf( "CEC enging parameters:\n" ); - printf( "Fraiging enabled: %s\n", pParams->fUseFraiging? "yes":"no" ); - printf( "Rewriting enabled: %s\n", pParams->fUseRewriting? "yes":"no" ); - printf( "BDD construction enabled: %s\n", pParams->fUseBdds? "yes":"no" ); - printf( "Verbose output enabled: %s\n", pParams->fVerbose? "yes":"no" ); - printf( "Solver iterations: %d\n", pParams->nItersMax ); - printf( "Starting mitering limit: %d\n", pParams->nMiteringLimitStart ); - printf( "Multiplicative coeficient for mitering: %.2f\n", pParams->nMiteringLimitMulti ); - printf( "Starting number of rewriting iterations: %d\n", pParams->nRewritingLimitStart ); - printf( "Multiplicative coeficient for rewriting: %.2f\n", pParams->nRewritingLimitMulti ); - printf( "Starting number of conflicts in fraiging: %.2f\n", pParams->nFraigingLimitMulti ); - printf( "Multiplicative coeficient for fraiging: %.2f\n", pParams->nRewritingLimitMulti ); - printf( "BDD size limit for bailing out: %d\n", pParams->nBddSizeLimit ); - printf( "BDD reordering enabled: %s\n", pParams->fBddReorder? "yes":"no" ); - printf( "Last-gasp mitering limit: %d\n", pParams->nMiteringLimitLast ); - printf( "Total conflict limit: %lld\n", pParams->nTotalBacktrackLimit ); - printf( "Total inspection limit: %lld\n", pParams->nTotalInspectLimit ); - printf( "Parameter dump complete.\n" ); -} - -/**Function************************************************************* - - Synopsis [Sets the default parameters of the package.] - - Description [This set of parameters is tuned for equivalence checking.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ParamsSetDefault( Fraig_Params_t * pParams ) -{ - memset( pParams, 0, sizeof(Fraig_Params_t) ); - pParams->nPatsRand = FRAIG_PATTERNS_RANDOM; // the number of words of random simulation info - pParams->nPatsDyna = FRAIG_PATTERNS_DYNAMIC; // the number of words of dynamic simulation info - pParams->nBTLimit = 99; // the max number of backtracks to perform - pParams->nSeconds = 20; // the max number of seconds to solve the miter - pParams->fFuncRed = 1; // performs only one level hashing - pParams->fFeedBack = 1; // enables solver feedback - pParams->fDist1Pats = 1; // enables distance-1 patterns - pParams->fDoSparse = 0; // performs equiv tests for sparse functions - pParams->fChoicing = 0; // enables recording structural choices - pParams->fTryProve = 1; // tries to solve the final miter - pParams->fVerbose = 0; // the verbosiness flag - pParams->fVerboseP = 0; // the verbose flag for reporting the proof - pParams->fInternal = 0; // the flag indicates the internal run - pParams->nConfLimit = 0; // the limit on the number of conflicts - pParams->nInspLimit = 0; // the limit on the number of inspections -} - -/**Function************************************************************* - - Synopsis [Sets the default parameters of the package.] - - Description [This set of parameters is tuned for complete FRAIGing.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ParamsSetDefaultFull( Fraig_Params_t * pParams ) -{ - memset( pParams, 0, sizeof(Fraig_Params_t) ); - pParams->nPatsRand = FRAIG_PATTERNS_RANDOM; // the number of words of random simulation info - pParams->nPatsDyna = FRAIG_PATTERNS_DYNAMIC; // the number of words of dynamic simulation info - pParams->nBTLimit = -1; // the max number of backtracks to perform - pParams->nSeconds = 20; // the max number of seconds to solve the miter - pParams->fFuncRed = 1; // performs only one level hashing - pParams->fFeedBack = 1; // enables solver feedback - pParams->fDist1Pats = 1; // enables distance-1 patterns - pParams->fDoSparse = 1; // performs equiv tests for sparse functions - pParams->fChoicing = 0; // enables recording structural choices - pParams->fTryProve = 0; // tries to solve the final miter - pParams->fVerbose = 0; // the verbosiness flag - pParams->fVerboseP = 0; // the verbose flag for reporting the proof - pParams->fInternal = 0; // the flag indicates the internal run - pParams->nConfLimit = 0; // the limit on the number of conflicts - pParams->nInspLimit = 0; // the limit on the number of inspections -} - -/**Function************************************************************* - - Synopsis [Creates the new FRAIG manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Man_t * Fraig_ManCreate( Fraig_Params_t * pParams ) -{ - Fraig_Params_t Params; - Fraig_Man_t * p; - - // set the random seed for simulation -// srand( 0xFEEDDEAF ); - srand( 0xDEADCAFE ); - - // set parameters for equivalence checking - if ( pParams == NULL ) - Fraig_ParamsSetDefault( pParams = &Params ); - // adjust the amount of simulation info - if ( pParams->nPatsRand < 128 ) - pParams->nPatsRand = 128; - if ( pParams->nPatsRand > 32768 ) - pParams->nPatsRand = 32768; - if ( pParams->nPatsDyna < 128 ) - pParams->nPatsDyna = 128; - if ( pParams->nPatsDyna > 32768 ) - pParams->nPatsDyna = 32768; - // if reduction is not performed, allocate minimum simulation info - if ( !pParams->fFuncRed ) - pParams->nPatsRand = pParams->nPatsDyna = 128; - - // start the manager - p = ABC_ALLOC( Fraig_Man_t, 1 ); - memset( p, 0, sizeof(Fraig_Man_t) ); - - // set the default parameters - p->nWordsRand = FRAIG_NUM_WORDS( pParams->nPatsRand ); // the number of words of random simulation info - p->nWordsDyna = FRAIG_NUM_WORDS( pParams->nPatsDyna ); // the number of patterns for dynamic simulation info - p->nBTLimit = pParams->nBTLimit; // -1 means infinite backtrack limit - p->nSeconds = pParams->nSeconds; // the timeout for the final miter - p->fFuncRed = pParams->fFuncRed; // enables functional reduction (otherwise, only one-level hashing is performed) - p->fFeedBack = pParams->fFeedBack; // enables solver feedback (the use of counter-examples in simulation) - p->fDist1Pats = pParams->fDist1Pats; // enables solver feedback (the use of counter-examples in simulation) - p->fDoSparse = pParams->fDoSparse; // performs equivalence checking for sparse functions (whose sim-info is 0) - p->fChoicing = pParams->fChoicing; // disable accumulation of structural choices (keeps only the first choice) - p->fTryProve = pParams->fTryProve; // disable accumulation of structural choices (keeps only the first choice) - p->fVerbose = pParams->fVerbose; // disable verbose output - p->fVerboseP = pParams->fVerboseP; // disable verbose output - p->nInspLimit = pParams->nInspLimit; // the limit on the number of inspections - - // start memory managers - p->mmNodes = Fraig_MemFixedStart( sizeof(Fraig_Node_t) ); - p->mmSims = Fraig_MemFixedStart( sizeof(unsigned) * (p->nWordsRand + p->nWordsDyna) ); - // allocate node arrays - p->vInputs = Fraig_NodeVecAlloc( 1000 ); // the array of primary inputs - p->vOutputs = Fraig_NodeVecAlloc( 1000 ); // the array of primary outputs - p->vNodes = Fraig_NodeVecAlloc( 1000 ); // the array of internal nodes - // start the tables - p->pTableS = Fraig_HashTableCreate( 1000 ); // hashing by structure - p->pTableF = Fraig_HashTableCreate( 1000 ); // hashing by function - p->pTableF0 = Fraig_HashTableCreate( 1000 ); // hashing by function (for sparse functions) - // create the constant node - p->pConst1 = Fraig_NodeCreateConst( p ); - // initialize SAT solver feedback data structures - Fraig_FeedBackInit( p ); - // initialize other variables - p->vProj = Msat_IntVecAlloc( 10 ); - p->nTravIds = 1; - p->nTravIds2 = 1; - return p; -} - -/**Function************************************************************* - - Synopsis [Deallocates the mapping manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManFree( Fraig_Man_t * p ) -{ - int i; - if ( p->fVerbose ) - { - if ( p->fChoicing ) Fraig_ManReportChoices( p ); - Fraig_ManPrintStats( p ); -// Fraig_TablePrintStatsS( p ); -// Fraig_TablePrintStatsF( p ); -// Fraig_TablePrintStatsF0( p ); - } - - for ( i = 0; i < p->vNodes->nSize; i++ ) - if ( p->vNodes->pArray[i]->vFanins ) - { - Fraig_NodeVecFree( p->vNodes->pArray[i]->vFanins ); - p->vNodes->pArray[i]->vFanins = NULL; - } - - if ( p->vInputs ) Fraig_NodeVecFree( p->vInputs ); - if ( p->vNodes ) Fraig_NodeVecFree( p->vNodes ); - if ( p->vOutputs ) Fraig_NodeVecFree( p->vOutputs ); - - if ( p->pTableS ) Fraig_HashTableFree( p->pTableS ); - if ( p->pTableF ) Fraig_HashTableFree( p->pTableF ); - if ( p->pTableF0 ) Fraig_HashTableFree( p->pTableF0 ); - - if ( p->pSat ) Msat_SolverFree( p->pSat ); - if ( p->vProj ) Msat_IntVecFree( p->vProj ); - if ( p->vCones ) Fraig_NodeVecFree( p->vCones ); - if ( p->vPatsReal ) Msat_IntVecFree( p->vPatsReal ); - if ( p->pModel ) ABC_FREE( p->pModel ); - - Fraig_MemFixedStop( p->mmNodes, 0 ); - Fraig_MemFixedStop( p->mmSims, 0 ); - - if ( p->pSuppS ) - { - ABC_FREE( p->pSuppS[0] ); - ABC_FREE( p->pSuppS ); - } - if ( p->pSuppF ) - { - ABC_FREE( p->pSuppF[0] ); - ABC_FREE( p->pSuppF ); - } - - ABC_FREE( p->ppOutputNames ); - ABC_FREE( p->ppInputNames ); - ABC_FREE( p ); -} - -/**Function************************************************************* - - Synopsis [Prepares the SAT solver to run on the two nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManCreateSolver( Fraig_Man_t * p ) -{ - extern int timeSelect; - extern int timeAssign; - assert( p->pSat == NULL ); - // allocate data for SAT solving - p->pSat = Msat_SolverAlloc( 500, 1, 1, 1, 1, 0 ); - p->vVarsInt = Msat_SolverReadConeVars( p->pSat ); - p->vAdjacents = Msat_SolverReadAdjacents( p->pSat ); - p->vVarsUsed = Msat_SolverReadVarsUsed( p->pSat ); - timeSelect = 0; - timeAssign = 0; -} - - -/**Function************************************************************* - - Synopsis [Deallocates the mapping manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManPrintStats( Fraig_Man_t * p ) -{ - double nMemory; - nMemory = ((double)(p->vInputs->nSize + p->vNodes->nSize) * - (sizeof(Fraig_Node_t) + sizeof(unsigned)*(p->nWordsRand + p->nWordsDyna) /*+ p->nSuppWords*sizeof(unsigned)*/))/(1<<20); - printf( "Words: Random = %d. Dynamic = %d. Used = %d. Memory = %0.2f Mb.\n", - p->nWordsRand, p->nWordsDyna, p->iWordPerm, nMemory ); - printf( "Proof = %d. Counter-example = %d. Fail = %d. FailReal = %d. Zero = %d.\n", - p->nSatProof, p->nSatCounter, p->nSatFails, p->nSatFailsReal, p->nSatZeros ); - printf( "Nodes: Final = %d. Total = %d. Mux = %d. (Exor = %d.) ClaVars = %d.\n", - Fraig_CountNodes(p,0), p->vNodes->nSize, Fraig_ManCountMuxes(p), Fraig_ManCountExors(p), p->nVarsClauses ); - if ( p->pSat ) Msat_SolverPrintStats( p->pSat ); - Fraig_PrintTime( "AIG simulation ", p->timeSims ); - Fraig_PrintTime( "AIG traversal ", p->timeTrav ); - Fraig_PrintTime( "Solver feedback ", p->timeFeed ); - Fraig_PrintTime( "SAT solving ", p->timeSat ); - Fraig_PrintTime( "Network update ", p->timeToNet ); - Fraig_PrintTime( "TOTAL RUNTIME ", p->timeTotal ); - if ( p->time1 > 0 ) { Fraig_PrintTime( "time1", p->time1 ); } - if ( p->time2 > 0 ) { Fraig_PrintTime( "time2", p->time2 ); } - if ( p->time3 > 0 ) { Fraig_PrintTime( "time3", p->time3 ); } - if ( p->time4 > 0 ) { Fraig_PrintTime( "time4", p->time4 ); } -// ABC_PRT( "Selection ", timeSelect ); -// ABC_PRT( "Assignment", timeAssign ); - fflush( stdout ); -} - -/**Function************************************************************* - - Synopsis [Allocates simulation information for all nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_UtilInfoAlloc( int nSize, int nWords, int fClean ) -{ - Fraig_NodeVec_t * vInfo; - unsigned * pUnsigned; - int i; - assert( nSize > 0 && nWords > 0 ); - vInfo = Fraig_NodeVecAlloc( nSize ); - pUnsigned = ABC_ALLOC( unsigned, nSize * nWords ); - vInfo->pArray[0] = (Fraig_Node_t *)pUnsigned; - if ( fClean ) - memset( pUnsigned, 0, sizeof(unsigned) * nSize * nWords ); - for ( i = 1; i < nSize; i++ ) - vInfo->pArray[i] = (Fraig_Node_t *)(((unsigned *)vInfo->pArray[i-1]) + nWords); - vInfo->nSize = nSize; - return vInfo; -} - -/**Function************************************************************* - - Synopsis [Returns simulation info of all nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_ManGetSimInfo( Fraig_Man_t * p ) -{ - Fraig_NodeVec_t * vInfo; - Fraig_Node_t * pNode; - unsigned * pUnsigned; - int nRandom, nDynamic; - int i, k, nWords; - - nRandom = Fraig_ManReadPatternNumRandom( p ); - nDynamic = Fraig_ManReadPatternNumDynamic( p ); - nWords = nRandom / 32 + nDynamic / 32; - - vInfo = Fraig_UtilInfoAlloc( p->vNodes->nSize, nWords, 0 ); - for ( i = 0; i < p->vNodes->nSize; i++ ) - { - pNode = p->vNodes->pArray[i]; - assert( i == pNode->Num ); - pUnsigned = (unsigned *)vInfo->pArray[i]; - for ( k = 0; k < nRandom / 32; k++ ) - pUnsigned[k] = pNode->puSimR[k]; - for ( k = 0; k < nDynamic / 32; k++ ) - pUnsigned[nRandom / 32 + k] = pNode->puSimD[k]; - } - return vInfo; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if A v B is always true based on the siminfo.] - - Description [A v B is always true iff A' * B' is always false.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManCheckClauseUsingSimInfo( Fraig_Man_t * p, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2 ) -{ - int fCompl1, fCompl2, i; - - fCompl1 = 1 ^ Fraig_IsComplement(pNode1) ^ Fraig_Regular(pNode1)->fInv; - fCompl2 = 1 ^ Fraig_IsComplement(pNode2) ^ Fraig_Regular(pNode2)->fInv; - - pNode1 = Fraig_Regular(pNode1); - pNode2 = Fraig_Regular(pNode2); - assert( pNode1 != pNode2 ); - - // check the simulation info - if ( fCompl1 && fCompl2 ) - { - for ( i = 0; i < p->nWordsRand; i++ ) - if ( ~pNode1->puSimR[i] & ~pNode2->puSimR[i] ) - return 0; - for ( i = 0; i < p->iWordStart; i++ ) - if ( ~pNode1->puSimD[i] & ~pNode2->puSimD[i] ) - return 0; - return 1; - } - if ( !fCompl1 && fCompl2 ) - { - for ( i = 0; i < p->nWordsRand; i++ ) - if ( pNode1->puSimR[i] & ~pNode2->puSimR[i] ) - return 0; - for ( i = 0; i < p->iWordStart; i++ ) - if ( pNode1->puSimD[i] & ~pNode2->puSimD[i] ) - return 0; - return 1; - } - if ( fCompl1 && !fCompl2 ) - { - for ( i = 0; i < p->nWordsRand; i++ ) - if ( ~pNode1->puSimR[i] & pNode2->puSimR[i] ) - return 0; - for ( i = 0; i < p->iWordStart; i++ ) - if ( ~pNode1->puSimD[i] & pNode2->puSimD[i] ) - return 0; - return 1; - } -// if ( fCompl1 && fCompl2 ) - { - for ( i = 0; i < p->nWordsRand; i++ ) - if ( pNode1->puSimR[i] & pNode2->puSimR[i] ) - return 0; - for ( i = 0; i < p->iWordStart; i++ ) - if ( pNode1->puSimD[i] & pNode2->puSimD[i] ) - return 0; - return 1; - } -} - -/**Function************************************************************* - - Synopsis [Adds clauses to the solver.] - - Description [This procedure is used to add external clauses to the solver. - The clauses are given by sets of nodes. Each node stands for one literal. - If the node is complemented, the literal is negated.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManAddClause( Fraig_Man_t * p, Fraig_Node_t ** ppNodes, int nNodes ) -{ - Fraig_Node_t * pNode; - int i, fComp, RetValue; - if ( p->pSat == NULL ) - Fraig_ManCreateSolver( p ); - // create four clauses - Msat_IntVecClear( p->vProj ); - for ( i = 0; i < nNodes; i++ ) - { - pNode = Fraig_Regular(ppNodes[i]); - fComp = Fraig_IsComplement(ppNodes[i]); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode->Num, fComp) ); -// printf( "%d(%d) ", pNode->Num, fComp ); - } -// printf( "\n" ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigMem.c b/src/sat/fraig/fraigMem.c deleted file mode 100644 index ef52765e..00000000 --- a/src/sat/fraig/fraigMem.c +++ /dev/null @@ -1,251 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigMem.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Fixed-size-entry memory manager for the FRAIG package.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigMem.c,v 1.4 2005/07/08 01:01:31 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -struct Fraig_MemFixed_t_ -{ - // information about individual entries - int nEntrySize; // the size of one entry - int nEntriesAlloc; // the total number of entries allocated - int nEntriesUsed; // the number of entries in use - int nEntriesMax; // the max number of entries in use - char * pEntriesFree; // the linked list of free entries - - // this is where the memory is stored - int nChunkSize; // the size of one chunk - int nChunksAlloc; // the maximum number of memory chunks - int nChunks; // the current number of memory chunks - char ** pChunks; // the allocated memory - - // statistics - int nMemoryUsed; // memory used in the allocated entries - int nMemoryAlloc; // memory allocated -}; - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Starts the internal memory manager.] - - Description [Can only work with entry size at least 4 byte long.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_MemFixed_t * Fraig_MemFixedStart( int nEntrySize ) -{ - Fraig_MemFixed_t * p; - - p = ABC_ALLOC( Fraig_MemFixed_t, 1 ); - memset( p, 0, sizeof(Fraig_MemFixed_t) ); - - p->nEntrySize = nEntrySize; - p->nEntriesAlloc = 0; - p->nEntriesUsed = 0; - p->pEntriesFree = NULL; - - if ( nEntrySize * (1 << 10) < (1<<16) ) - p->nChunkSize = (1 << 10); - else - p->nChunkSize = (1<<16) / nEntrySize; - if ( p->nChunkSize < 8 ) - p->nChunkSize = 8; - - p->nChunksAlloc = 64; - p->nChunks = 0; - p->pChunks = ABC_ALLOC( char *, p->nChunksAlloc ); - - p->nMemoryUsed = 0; - p->nMemoryAlloc = 0; - return p; -} - -/**Function************************************************************* - - Synopsis [Stops the internal memory manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_MemFixedStop( Fraig_MemFixed_t * p, int fVerbose ) -{ - int i; - if ( p == NULL ) - return; - if ( fVerbose ) - { - printf( "Fixed memory manager: Entry = %5d. Chunk = %5d. Chunks used = %5d.\n", - p->nEntrySize, p->nChunkSize, p->nChunks ); - printf( " Entries used = %8d. Entries peak = %8d. Memory used = %8d. Memory alloc = %8d.\n", - p->nEntriesUsed, p->nEntriesMax, p->nEntrySize * p->nEntriesUsed, p->nMemoryAlloc ); - } - for ( i = 0; i < p->nChunks; i++ ) - ABC_FREE( p->pChunks[i] ); - ABC_FREE( p->pChunks ); - ABC_FREE( p ); -} - -/**Function************************************************************* - - Synopsis [Extracts one entry from the memory manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -char * Fraig_MemFixedEntryFetch( Fraig_MemFixed_t * p ) -{ - char * pTemp; - int i; - - // check if there are still free entries - if ( p->nEntriesUsed == p->nEntriesAlloc ) - { // need to allocate more entries - assert( p->pEntriesFree == NULL ); - if ( p->nChunks == p->nChunksAlloc ) - { - p->nChunksAlloc *= 2; - p->pChunks = ABC_REALLOC( char *, p->pChunks, p->nChunksAlloc ); - } - p->pEntriesFree = ABC_ALLOC( char, p->nEntrySize * p->nChunkSize ); - p->nMemoryAlloc += p->nEntrySize * p->nChunkSize; - // transform these entries into a linked list - pTemp = p->pEntriesFree; - for ( i = 1; i < p->nChunkSize; i++ ) - { - *((char **)pTemp) = pTemp + p->nEntrySize; - pTemp += p->nEntrySize; - } - // set the last link - *((char **)pTemp) = NULL; - // add the chunk to the chunk storage - p->pChunks[ p->nChunks++ ] = p->pEntriesFree; - // add to the number of entries allocated - p->nEntriesAlloc += p->nChunkSize; - } - // incrememt the counter of used entries - p->nEntriesUsed++; - if ( p->nEntriesMax < p->nEntriesUsed ) - p->nEntriesMax = p->nEntriesUsed; - // return the first entry in the free entry list - pTemp = p->pEntriesFree; - p->pEntriesFree = *((char **)pTemp); - return pTemp; -} - -/**Function************************************************************* - - Synopsis [Returns one entry into the memory manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_MemFixedEntryRecycle( Fraig_MemFixed_t * p, char * pEntry ) -{ - // decrement the counter of used entries - p->nEntriesUsed--; - // add the entry to the linked list of free entries - *((char **)pEntry) = p->pEntriesFree; - p->pEntriesFree = pEntry; -} - -/**Function************************************************************* - - Synopsis [Frees all associated memory and resets the manager.] - - Description [Relocates all the memory except the first chunk.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_MemFixedRestart( Fraig_MemFixed_t * p ) -{ - int i; - char * pTemp; - - // deallocate all chunks except the first one - for ( i = 1; i < p->nChunks; i++ ) - ABC_FREE( p->pChunks[i] ); - p->nChunks = 1; - // transform these entries into a linked list - pTemp = p->pChunks[0]; - for ( i = 1; i < p->nChunkSize; i++ ) - { - *((char **)pTemp) = pTemp + p->nEntrySize; - pTemp += p->nEntrySize; - } - // set the last link - *((char **)pTemp) = NULL; - // set the free entry list - p->pEntriesFree = p->pChunks[0]; - // set the correct statistics - p->nMemoryAlloc = p->nEntrySize * p->nChunkSize; - p->nMemoryUsed = 0; - p->nEntriesAlloc = p->nChunkSize; - p->nEntriesUsed = 0; -} - -/**Function************************************************************* - - Synopsis [Reports the memory usage.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_MemFixedReadMemUsage( Fraig_MemFixed_t * p ) -{ - return p->nMemoryAlloc; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigNode.c b/src/sat/fraig/fraigNode.c deleted file mode 100644 index 9f95cd46..00000000 --- a/src/sat/fraig/fraigNode.c +++ /dev/null @@ -1,318 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigNode.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Implementation of the FRAIG node.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigNode.c,v 1.3 2005/07/08 01:01:32 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -// returns the complemented attribute of the node -#define Fraig_NodeIsSimComplement(p) (Fraig_IsComplement(p)? !(Fraig_Regular(p)->fInv) : (p)->fInv) - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Creates the constant 1 node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeCreateConst( Fraig_Man_t * p ) -{ - Fraig_Node_t * pNode; - - // create the node - pNode = (Fraig_Node_t *)Fraig_MemFixedEntryFetch( p->mmNodes ); - memset( pNode, 0, sizeof(Fraig_Node_t) ); - - // assign the number and add to the array of nodes - pNode->Num = p->vNodes->nSize; - Fraig_NodeVecPush( p->vNodes, pNode ); - pNode->NumPi = -1; // this is not a PI, so its number is -1 - pNode->Level = 0; // just like a PI, it has 0 level - pNode->nRefs = 1; // it is a persistent node, which comes referenced - pNode->fInv = 1; // the simulation info is complemented - - // create the simulation info - pNode->puSimR = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - pNode->puSimD = pNode->puSimR + p->nWordsRand; - memset( pNode->puSimR, 0, sizeof(unsigned) * p->nWordsRand ); - memset( pNode->puSimD, 0, sizeof(unsigned) * p->nWordsDyna ); - - // count the number of ones in the simulation vector - pNode->nOnes = p->nWordsRand * sizeof(unsigned) * 8; - - // insert it into the hash table - Fraig_HashTableLookupF0( p, pNode ); - return pNode; -} - -/**Function************************************************************* - - Synopsis [Creates a primary input node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeCreatePi( Fraig_Man_t * p ) -{ - Fraig_Node_t * pNode, * pNodeRes; - int i, clk; - - // create the node - pNode = (Fraig_Node_t *)Fraig_MemFixedEntryFetch( p->mmNodes ); - memset( pNode, 0, sizeof(Fraig_Node_t) ); - pNode->puSimR = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - pNode->puSimD = pNode->puSimR + p->nWordsRand; - memset( pNode->puSimD, 0, sizeof(unsigned) * p->nWordsDyna ); - - // assign the number and add to the array of nodes - pNode->Num = p->vNodes->nSize; - Fraig_NodeVecPush( p->vNodes, pNode ); - - // assign the PI number and add to the array of primary inputs - pNode->NumPi = p->vInputs->nSize; - Fraig_NodeVecPush( p->vInputs, pNode ); - - pNode->Level = 0; // PI has 0 level - pNode->nRefs = 1; // it is a persistent node, which comes referenced - pNode->fInv = 0; // the simulation info of the PI is not complemented - - // derive the simulation info for the new node -clk = clock(); - // set the random simulation info for the primary input - pNode->uHashR = 0; - for ( i = 0; i < p->nWordsRand; i++ ) - { - // generate the simulation info - pNode->puSimR[i] = FRAIG_RANDOM_UNSIGNED; - // for reasons that take very long to explain, it makes sense to have (0000000...) - // pattern in the set (this helps if we need to return the counter-examples) - if ( i == 0 ) - pNode->puSimR[i] <<= 1; - // compute the hash key - pNode->uHashR ^= pNode->puSimR[i] * s_FraigPrimes[i]; - } - // count the number of ones in the simulation vector - pNode->nOnes = Fraig_BitStringCountOnes( pNode->puSimR, p->nWordsRand ); - - // set the systematic simulation info for the primary input - pNode->uHashD = 0; - for ( i = 0; i < p->iWordStart; i++ ) - { - // generate the simulation info - pNode->puSimD[i] = FRAIG_RANDOM_UNSIGNED; - // compute the hash key - pNode->uHashD ^= pNode->puSimD[i] * s_FraigPrimes[i]; - } -p->timeSims += clock() - clk; - - // insert it into the hash table - pNodeRes = Fraig_HashTableLookupF( p, pNode ); - assert( pNodeRes == NULL ); - // add to the runtime of simulation - return pNode; -} - -/**Function************************************************************* - - Synopsis [Creates a new node.] - - Description [This procedure should be called to create the constant - node and the PI nodes first.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeCreate( Fraig_Man_t * p, Fraig_Node_t * p1, Fraig_Node_t * p2 ) -{ - Fraig_Node_t * pNode; - int clk; - - // create the node - pNode = (Fraig_Node_t *)Fraig_MemFixedEntryFetch( p->mmNodes ); - memset( pNode, 0, sizeof(Fraig_Node_t) ); - - // assign the children - pNode->p1 = p1; Fraig_Ref(p1); Fraig_Regular(p1)->nRefs++; - pNode->p2 = p2; Fraig_Ref(p2); Fraig_Regular(p2)->nRefs++; - - // assign the number and add to the array of nodes - pNode->Num = p->vNodes->nSize; - Fraig_NodeVecPush( p->vNodes, pNode ); - - // assign the PI number - pNode->NumPi = -1; - - // compute the level of this node - pNode->Level = 1 + ABC_MAX(Fraig_Regular(p1)->Level, Fraig_Regular(p2)->Level); - pNode->fInv = Fraig_NodeIsSimComplement(p1) & Fraig_NodeIsSimComplement(p2); - pNode->fFailTfo = Fraig_Regular(p1)->fFailTfo | Fraig_Regular(p2)->fFailTfo; - - // derive the simulation info -clk = clock(); - // allocate memory for the simulation info - pNode->puSimR = (unsigned *)Fraig_MemFixedEntryFetch( p->mmSims ); - pNode->puSimD = pNode->puSimR + p->nWordsRand; - // derive random simulation info - pNode->uHashR = 0; - Fraig_NodeSimulate( pNode, 0, p->nWordsRand, 1 ); - // derive dynamic simulation info - pNode->uHashD = 0; - Fraig_NodeSimulate( pNode, 0, p->iWordStart, 0 ); - // count the number of ones in the random simulation info - pNode->nOnes = Fraig_BitStringCountOnes( pNode->puSimR, p->nWordsRand ); - if ( pNode->fInv ) - pNode->nOnes = p->nWordsRand * 32 - pNode->nOnes; - // add to the runtime of simulation -p->timeSims += clock() - clk; - -#ifdef FRAIG_ENABLE_FANOUTS - // create the fanout info - Fraig_NodeAddFaninFanout( Fraig_Regular(p1), pNode ); - Fraig_NodeAddFaninFanout( Fraig_Regular(p2), pNode ); -#endif - return pNode; -} - - -/**Function************************************************************* - - Synopsis [Simulates the node.] - - Description [Simulates the random or dynamic simulation info through - the node. Uses phases of the children to determine their real simulation - info. Uses phase of the node to determine the way its simulation info - is stored. The resulting info is guaranteed to be 0 for the first pattern.] - - SideEffects [This procedure modified the hash value of the simulation info.] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeSimulate( Fraig_Node_t * pNode, int iWordStart, int iWordStop, int fUseRand ) -{ - unsigned * pSims, * pSims1, * pSims2; - unsigned uHash; - int fCompl, fCompl1, fCompl2, i; - - assert( !Fraig_IsComplement(pNode) ); - - // get hold of the simulation information - pSims = fUseRand? pNode->puSimR : pNode->puSimD; - pSims1 = fUseRand? Fraig_Regular(pNode->p1)->puSimR : Fraig_Regular(pNode->p1)->puSimD; - pSims2 = fUseRand? Fraig_Regular(pNode->p2)->puSimR : Fraig_Regular(pNode->p2)->puSimD; - - // get complemented attributes of the children using their random info - fCompl = pNode->fInv; - fCompl1 = Fraig_NodeIsSimComplement(pNode->p1); - fCompl2 = Fraig_NodeIsSimComplement(pNode->p2); - - // simulate - uHash = 0; - if ( fCompl1 && fCompl2 ) - { - if ( fCompl ) - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = (pSims1[i] | pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - else - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = ~(pSims1[i] | pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - } - else if ( fCompl1 && !fCompl2 ) - { - if ( fCompl ) - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = (pSims1[i] | ~pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - else - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = (~pSims1[i] & pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - } - else if ( !fCompl1 && fCompl2 ) - { - if ( fCompl ) - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = (~pSims1[i] | pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - else - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = (pSims1[i] & ~pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - } - else // if ( !fCompl1 && !fCompl2 ) - { - if ( fCompl ) - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = ~(pSims1[i] & pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - else - for ( i = iWordStart; i < iWordStop; i++ ) - { - pSims[i] = (pSims1[i] & pSims2[i]); - uHash ^= pSims[i] * s_FraigPrimes[i]; - } - } - - if ( fUseRand ) - pNode->uHashR ^= uHash; - else - pNode->uHashD ^= uHash; -} - - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigPrime.c b/src/sat/fraig/fraigPrime.c deleted file mode 100644 index 42a079fd..00000000 --- a/src/sat/fraig/fraigPrime.c +++ /dev/null @@ -1,149 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigPrime.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [The table of the first 1000 primes.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigPrime.c,v 1.4 2005/07/08 01:01:32 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -// The 1,024 smallest prime numbers used to compute the hash value -// http://www.math.utah.edu/~alfeld/math/primelist.html -int s_FraigPrimes[FRAIG_MAX_PRIMES] = { 2, 3, 5, -7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, -101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, -193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, -293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, -409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, -521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, -641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, -757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, -881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997, -1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063, 1069, 1087, 1091, -1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151, 1153, 1163, 1171, 1181, 1187, 1193, -1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291, -1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399, 1409, 1423, -1427, 1429, 1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, -1499, 1511, 1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583, 1597, 1601, -1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, 1669, 1693, 1697, 1699, -1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789, 1801, 1811, -1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889, 1901, 1907, 1913, 1931, -1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997, 1999, 2003, 2011, 2017, 2027, 2029, -2039, 2053, 2063, 2069, 2081, 2083, 2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137, -2141, 2143, 2153, 2161, 2179, 2203, 2207, 2213, 2221, 2237, 2239, 2243, 2251, 2267, -2269, 2273, 2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357, -2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, 2417, 2423, 2437, 2441, 2447, 2459, -2467, 2473, 2477, 2503, 2521, 2531, 2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593, -2609, 2617, 2621, 2633, 2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687, 2689, 2693, -2699, 2707, 2711, 2713, 2719, 2729, 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, -2797, 2801, 2803, 2819, 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897, 2903, -2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999, 3001, 3011, 3019, 3023, -3037, 3041, 3049, 3061, 3067, 3079, 3083, 3089, 3109, 3119, 3121, 3137, 3163, 3167, -3169, 3181, 3187, 3191, 3203, 3209, 3217, 3221, 3229, 3251, 3253, 3257, 3259, 3271, -3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331, 3343, 3347, 3359, 3361, 3371, 3373, -3389, 3391, 3407, 3413, 3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511, -3517, 3527, 3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571, 3581, 3583, 3593, 3607, -3613, 3617, 3623, 3631, 3637, 3643, 3659, 3671, 3673, 3677, 3691, 3697, 3701, 3709, -3719, 3727, 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797, 3803, 3821, 3823, 3833, -3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907, 3911, 3917, 3919, 3923, 3929, 3931, -3943, 3947, 3967, 3989, 4001, 4003, 4007, 4013, 4019, 4021, 4027, 4049, 4051, 4057, -4073, 4079, 4091, 4093, 4099, 4111, 4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177, -4201, 4211, 4217, 4219, 4229, 4231, 4241, 4243, 4253, 4259, 4261, 4271, 4273, 4283, -4289, 4297, 4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391, 4397, 4409, 4421, 4423, -4441, 4447, 4451, 4457, 4463, 4481, 4483, 4493, 4507, 4513, 4517, 4519, 4523, 4547, -4549, 4561, 4567, 4583, 4591, 4597, 4603, 4621, 4637, 4639, 4643, 4649, 4651, 4657, -4663, 4673, 4679, 4691, 4703, 4721, 4723, 4729, 4733, 4751, 4759, 4783, 4787, 4789, -4793, 4799, 4801, 4813, 4817, 4831, 4861, 4871, 4877, 4889, 4903, 4909, 4919, 4931, -4933, 4937, 4943, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999, 5003, 5009, 5011, -5021, 5023, 5039, 5051, 5059, 5077, 5081, 5087, 5099, 5101, 5107, 5113, 5119, 5147, -5153, 5167, 5171, 5179, 5189, 5197, 5209, 5227, 5231, 5233, 5237, 5261, 5273, 5279, -5281, 5297, 5303, 5309, 5323, 5333, 5347, 5351, 5381, 5387, 5393, 5399, 5407, 5413, -5417, 5419, 5431, 5437, 5441, 5443, 5449, 5471, 5477, 5479, 5483, 5501, 5503, 5507, -5519, 5521, 5527, 5531, 5557, 5563, 5569, 5573, 5581, 5591, 5623, 5639, 5641, 5647, -5651, 5653, 5657, 5659, 5669, 5683, 5689, 5693, 5701, 5711, 5717, 5737, 5741, 5743, -5749, 5779, 5783, 5791, 5801, 5807, 5813, 5821, 5827, 5839, 5843, 5849, 5851, 5857, -5861, 5867, 5869, 5879, 5881, 5897, 5903, 5923, 5927, 5939, 5953, 5981, 5987, 6007, -6011, 6029, 6037, 6043, 6047, 6053, 6067, 6073, 6079, 6089, 6091, 6101, 6113, 6121, -6131, 6133, 6143, 6151, 6163, 6173, 6197, 6199, 6203, 6211, 6217, 6221, 6229, 6247, -6257, 6263, 6269, 6271, 6277, 6287, 6299, 6301, 6311, 6317, 6323, 6329, 6337, 6343, -6353, 6359, 6361, 6367, 6373, 6379, 6389, 6397, 6421, 6427, 6449, 6451, 6469, 6473, -6481, 6491, 6521, 6529, 6547, 6551, 6553, 6563, 6569, 6571, 6577, 6581, 6599, 6607, -6619, 6637, 6653, 6659, 6661, 6673, 6679, 6689, 6691, 6701, 6703, 6709, 6719, 6733, -6737, 6761, 6763, 6779, 6781, 6791, 6793, 6803, 6823, 6827, 6829, 6833, 6841, 6857, -6863, 6869, 6871, 6883, 6899, 6907, 6911, 6917, 6947, 6949, 6959, 6961, 6967, 6971, -6977, 6983, 6991, 6997, 7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103, -7109, 7121, 7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207, 7211, 7213, 7219, 7229, -7237, 7243, 7247, 7253, 7283, 7297, 7307, 7309, 7321, 7331, 7333, 7349, 7351, 7369, -7393, 7411, 7417, 7433, 7451, 7457, 7459, 7477, 7481, 7487, 7489, 7499, 7507, 7517, -7523, 7529, 7537, 7541, 7547, 7549, 7559, 7561, 7573, 7577, 7583, 7589, 7591, 7603, -7607, 7621, 7639, 7643, 7649, 7669, 7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723, -7727, 7741, 7753, 7757, 7759, 7789, 7793, 7817, 7823, 7829, 7841, 7853, 7867, 7873, -7877, 7879, 7883, 7901, 7907, 7919, 7927, 7933, 7937, 7949, 7951, 7963, 7993, 8009, -8011, 8017, 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111, 8117, 8123, -8147, 8161 }; - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function******************************************************************** - - Synopsis [Returns the next prime >= p.] - - Description [Copied from CUDD, for stand-aloneness.] - - SideEffects [None] - - SeeAlso [] - -******************************************************************************/ -unsigned int Cudd_PrimeFraig( unsigned int p) -{ - int i,pn; - - p--; - do { - p++; - if (p&1) { - pn = 1; - i = 3; - while ((unsigned) (i * i) <= p) { - if (p % i == 0) { - pn = 0; - break; - } - i += 2; - } - } else { - pn = 0; - } - } while (!pn); - return(p); - -} /* end of Cudd_Prime */ - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigSat.c b/src/sat/fraig/fraigSat.c deleted file mode 100644 index b96bc5a1..00000000 --- a/src/sat/fraig/fraigSat.c +++ /dev/null @@ -1,1459 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigSat.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Proving functional equivalence using SAT.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigSat.c,v 1.10 2005/07/08 01:01:32 alanmi Exp $] - -***********************************************************************/ - -#include <math.h> -#include "fraigInt.h" -#include "msatInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -static void Fraig_OrderVariables( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -static void Fraig_SetupAdjacent( Fraig_Man_t * pMan, Msat_IntVec_t * vConeVars ); -static void Fraig_SetupAdjacentMark( Fraig_Man_t * pMan, Msat_IntVec_t * vConeVars ); -static void Fraig_PrepareCones( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); -static void Fraig_PrepareCones_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); - -static void Fraig_SupergateAddClauses( Fraig_Man_t * pMan, Fraig_Node_t * pNode, Fraig_NodeVec_t * vSuper ); -static void Fraig_SupergateAddClausesExor( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -static void Fraig_SupergateAddClausesMux( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -//static void Fraig_DetectFanoutFreeCone( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -static void Fraig_DetectFanoutFreeConeMux( Fraig_Man_t * pMan, Fraig_Node_t * pNode ); -static void Fraig_SetActivity( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ); - -// The lesson learned seems to be that variable should be in reverse topological order -// from the output of the miter. The ordering of adjacency lists is very important. -// The best way seems to be fanins followed by fanouts. Slight changes to this order -// leads to big degradation in quality. - -static int nMuxes; - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Checks equivalence of two nodes.] - - Description [Returns 1 iff the nodes are equivalent.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodesAreEqual( Fraig_Man_t * p, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int nBTLimit, int nTimeLimit ) -{ - if ( pNode1 == pNode2 ) - return 1; - if ( pNode1 == Fraig_Not(pNode2) ) - return 0; - return Fraig_NodeIsEquivalent( p, Fraig_Regular(pNode1), Fraig_Regular(pNode2), nBTLimit, nTimeLimit ); -} - -/**Function************************************************************* - - Synopsis [Tries to prove the final miter.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManProveMiter( Fraig_Man_t * p ) -{ - Fraig_Node_t * pNode; - int i, clk; - - if ( !p->fTryProve ) - return; - - clk = clock(); - // consider all outputs of the multi-output miter - for ( i = 0; i < p->vOutputs->nSize; i++ ) - { - pNode = Fraig_Regular(p->vOutputs->pArray[i]); - // skip already constant nodes - if ( pNode == p->pConst1 ) - continue; - // skip nodes that are different according to simulation - if ( !Fraig_CompareSimInfo( pNode, p->pConst1, p->nWordsRand, 1 ) ) - continue; - if ( Fraig_NodeIsEquivalent( p, p->pConst1, pNode, -1, p->nSeconds ) ) - { - if ( Fraig_IsComplement(p->vOutputs->pArray[i]) ^ Fraig_NodeComparePhase(p->pConst1, pNode) ) - p->vOutputs->pArray[i] = Fraig_Not(p->pConst1); - else - p->vOutputs->pArray[i] = p->pConst1; - } - } - if ( p->fVerboseP ) - { -// ABC_PRT( "Final miter proof time", clock() - clk ); - } -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the miter is unsat; 0 if sat; -1 if undecided.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManCheckMiter( Fraig_Man_t * p ) -{ - Fraig_Node_t * pNode; - int i; - ABC_FREE( p->pModel ); - for ( i = 0; i < p->vOutputs->nSize; i++ ) - { - // get the output node (it can be complemented!) - pNode = p->vOutputs->pArray[i]; - // if the miter is constant 0, the problem is UNSAT - if ( pNode == Fraig_Not(p->pConst1) ) - continue; - // consider the special case when the miter is constant 1 - if ( pNode == p->pConst1 ) - { - // in this case, any counter example will do to distinquish it from constant 0 - // here we pick the counter example composed of all zeros - p->pModel = Fraig_ManAllocCounterExample( p ); - return 0; - } - // save the counter example - p->pModel = Fraig_ManSaveCounterExample( p, pNode ); - // if the model is not found, return undecided - if ( p->pModel == NULL ) - return -1; - else - return 0; - } - return 1; -} - - -/**Function************************************************************* - - Synopsis [Returns 1 if pOld is in the TFI of pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_MarkTfi_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - // skip the visited node - if ( pNode->TravId == pMan->nTravIds ) - return 0; - pNode->TravId = pMan->nTravIds; - // skip the PI node - if ( pNode->NumPi >= 0 ) - return 1; - // check the children - return Fraig_MarkTfi_rec( pMan, Fraig_Regular(pNode->p1) ) + - Fraig_MarkTfi_rec( pMan, Fraig_Regular(pNode->p2) ); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if pOld is in the TFI of pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_MarkTfi2_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - // skip the visited node - if ( pNode->TravId == pMan->nTravIds ) - return 0; - // skip the boundary node - if ( pNode->TravId == pMan->nTravIds-1 ) - { - pNode->TravId = pMan->nTravIds; - return 1; - } - pNode->TravId = pMan->nTravIds; - // skip the PI node - if ( pNode->NumPi >= 0 ) - return 1; - // check the children - return Fraig_MarkTfi2_rec( pMan, Fraig_Regular(pNode->p1) ) + - Fraig_MarkTfi2_rec( pMan, Fraig_Regular(pNode->p2) ); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if pOld is in the TFI of pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_MarkTfi3_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - // skip the visited node - if ( pNode->TravId == pMan->nTravIds ) - return 1; - // skip the boundary node - if ( pNode->TravId == pMan->nTravIds-1 ) - { - pNode->TravId = pMan->nTravIds; - return 1; - } - pNode->TravId = pMan->nTravIds; - // skip the PI node - if ( pNode->NumPi >= 0 ) - return 0; - // check the children - return Fraig_MarkTfi3_rec( pMan, Fraig_Regular(pNode->p1) ) * - Fraig_MarkTfi3_rec( pMan, Fraig_Regular(pNode->p2) ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_VarsStudy( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - int NumPis, NumCut, fContain; - - // mark the TFI of pNew - p->nTravIds++; - NumPis = Fraig_MarkTfi_rec( p, pNew ); - printf( "(%d)(%d,%d):", NumPis, pOld->Level, pNew->Level ); - - // check if the old is in the TFI - if ( pOld->TravId == p->nTravIds ) - { - printf( "* " ); - return; - } - - // count the boundary of nodes in pOld - p->nTravIds++; - NumCut = Fraig_MarkTfi2_rec( p, pOld ); - printf( "%d", NumCut ); - - // check if the new is contained in the old's support - p->nTravIds++; - fContain = Fraig_MarkTfi3_rec( p, pNew ); - printf( "%c ", fContain? '+':'-' ); -} - - -/**Function************************************************************* - - Synopsis [Checks whether two nodes are functinally equivalent.] - - Description [The flag (fComp) tells whether the nodes to be checked - are in the opposite polarity. The second flag (fSkipZeros) tells whether - the checking should be performed if the simulation vectors are zeros. - Returns 1 if the nodes are equivalent; 0 othewise.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsEquivalent( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew, int nBTLimit, int nTimeLimit ) -{ - int RetValue, RetValue1, i, fComp, clk; - int fVerbose = 0; - int fSwitch = 0; - - // make sure the nodes are not complemented - assert( !Fraig_IsComplement(pNew) ); - assert( !Fraig_IsComplement(pOld) ); - assert( pNew != pOld ); - - // if at least one of the nodes is a failed node, perform adjustments: - // if the backtrack limit is small, simply skip this node - // if the backtrack limit is > 10, take the quare root of the limit - if ( nBTLimit > 0 && (pOld->fFailTfo || pNew->fFailTfo) ) - { - p->nSatFails++; -// return 0; -// if ( nBTLimit > 10 ) -// nBTLimit /= 10; - if ( nBTLimit <= 10 ) - return 0; - nBTLimit = (int)sqrt((double)nBTLimit); -// fSwitch = 1; - } - - p->nSatCalls++; - - // make sure the solver is allocated and has enough variables - if ( p->pSat == NULL ) - Fraig_ManCreateSolver( p ); - // make sure the SAT solver has enough variables - for ( i = Msat_SolverReadVarNum(p->pSat); i < p->vNodes->nSize; i++ ) - Msat_SolverAddVar( p->pSat, p->vNodes->pArray[i]->Level ); - - - -/* - { - Fraig_Node_t * ppNodes[2] = { pOld, pNew }; - extern void Fraig_MappingShowNodes( Fraig_Man_t * pMan, Fraig_Node_t ** ppRoots, int nRoots, char * pFileName ); - Fraig_MappingShowNodes( p, ppNodes, 2, "temp_aig" ); - } -*/ - - nMuxes = 0; - - - // get the logic cone -clk = clock(); -// Fraig_VarsStudy( p, pOld, pNew ); - Fraig_OrderVariables( p, pOld, pNew ); -// Fraig_PrepareCones( p, pOld, pNew ); -p->timeTrav += clock() - clk; - -// printf( "The number of MUXes detected = %d (%5.2f %% of logic). ", nMuxes, 300.0*nMuxes/(p->vNodes->nSize - p->vInputs->nSize) ); -// ABC_PRT( "Time", clock() - clk ); - -if ( fVerbose ) - printf( "%d(%d) - ", Fraig_CountPis(p,p->vVarsInt), Msat_IntVecReadSize(p->vVarsInt) ); - - - // prepare variable activity - Fraig_SetActivity( p, pOld, pNew ); - - // get the complemented attribute - fComp = Fraig_NodeComparePhase( pOld, pNew ); -//Msat_SolverPrintClauses( p->pSat ); - - //////////////////////////////////////////// - // prepare the solver to run incrementally on these variables -//clk = clock(); - Msat_SolverPrepare( p->pSat, p->vVarsInt ); -//p->time3 += clock() - clk; - - - // solve under assumptions - // A = 1; B = 0 OR A = 1; B = 1 - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pOld->Num, 0) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNew->Num, !fComp) ); - -//Msat_SolverWriteDimacs( p->pSat, "temp_fraig.cnf" ); - - // run the solver -clk = clock(); - RetValue1 = Msat_SolverSolve( p->pSat, p->vProj, nBTLimit, nTimeLimit ); -p->timeSat += clock() - clk; - - if ( RetValue1 == MSAT_FALSE ) - { -//p->time1 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "unsat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - - // add the clause - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pOld->Num, 1) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNew->Num, fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - // continue solving the other implication - } - else if ( RetValue1 == MSAT_TRUE ) - { -//p->time2 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "sat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - - // record the counter example - Fraig_FeedBack( p, Msat_SolverReadModelArray(p->pSat), p->vVarsInt, pOld, pNew ); - -// if ( pOld->fFailTfo || pNew->fFailTfo ) -// printf( "*" ); -// printf( "s(%d)", pNew->Level ); - if ( fSwitch ) - printf( "s(%d)", pNew->Level ); - p->nSatCounter++; - return 0; - } - else // if ( RetValue1 == MSAT_UNKNOWN ) - { -p->time3 += clock() - clk; - -// if ( pOld->fFailTfo || pNew->fFailTfo ) -// printf( "*" ); -// printf( "T(%d)", pNew->Level ); - - // mark the node as the failed node - if ( pOld != p->pConst1 ) - pOld->fFailTfo = 1; - pNew->fFailTfo = 1; -// p->nSatFails++; - if ( fSwitch ) - printf( "T(%d)", pNew->Level ); - p->nSatFailsReal++; - return 0; - } - - // if the old node was constant 0, we already know the answer - if ( pOld == p->pConst1 ) - return 1; - - //////////////////////////////////////////// - // prepare the solver to run incrementally -//clk = clock(); - Msat_SolverPrepare( p->pSat, p->vVarsInt ); -//p->time3 += clock() - clk; - // solve under assumptions - // A = 0; B = 1 OR A = 0; B = 0 - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pOld->Num, 1) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNew->Num, fComp) ); - // run the solver -clk = clock(); - RetValue1 = Msat_SolverSolve( p->pSat, p->vProj, nBTLimit, nTimeLimit ); -p->timeSat += clock() - clk; - - if ( RetValue1 == MSAT_FALSE ) - { -//p->time1 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "unsat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - - // add the clause - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pOld->Num, 0) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNew->Num, !fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - // continue solving the other implication - } - else if ( RetValue1 == MSAT_TRUE ) - { -//p->time2 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "sat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - - // record the counter example - Fraig_FeedBack( p, Msat_SolverReadModelArray(p->pSat), p->vVarsInt, pOld, pNew ); - p->nSatCounter++; - -// if ( pOld->fFailTfo || pNew->fFailTfo ) -// printf( "*" ); -// printf( "s(%d)", pNew->Level ); - if ( fSwitch ) - printf( "s(%d)", pNew->Level ); - return 0; - } - else // if ( RetValue1 == MSAT_UNKNOWN ) - { -p->time3 += clock() - clk; - -// if ( pOld->fFailTfo || pNew->fFailTfo ) -// printf( "*" ); -// printf( "T(%d)", pNew->Level ); - if ( fSwitch ) - printf( "T(%d)", pNew->Level ); - - // mark the node as the failed node - pOld->fFailTfo = 1; - pNew->fFailTfo = 1; -// p->nSatFails++; - p->nSatFailsReal++; - return 0; - } - - // return SAT proof - p->nSatProof++; - -// if ( pOld->fFailTfo || pNew->fFailTfo ) -// printf( "*" ); -// printf( "u(%d)", pNew->Level ); - - if ( fSwitch ) - printf( "u(%d)", pNew->Level ); - - return 1; -} - - -/**Function************************************************************* - - Synopsis [Checks whether pOld => pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsImplication( Fraig_Man_t * p, Fraig_Node_t * pOld, Fraig_Node_t * pNew, int nBTLimit ) -{ - int RetValue, RetValue1, i, fComp, clk; - int fVerbose = 0; - - // make sure the nodes are not complemented - assert( !Fraig_IsComplement(pNew) ); - assert( !Fraig_IsComplement(pOld) ); - assert( pNew != pOld ); - - p->nSatCallsImp++; - - // make sure the solver is allocated and has enough variables - if ( p->pSat == NULL ) - Fraig_ManCreateSolver( p ); - // make sure the SAT solver has enough variables - for ( i = Msat_SolverReadVarNum(p->pSat); i < p->vNodes->nSize; i++ ) - Msat_SolverAddVar( p->pSat, p->vNodes->pArray[i]->Level ); - - // get the logic cone -clk = clock(); - Fraig_OrderVariables( p, pOld, pNew ); -// Fraig_PrepareCones( p, pOld, pNew ); -p->timeTrav += clock() - clk; - -if ( fVerbose ) - printf( "%d(%d) - ", Fraig_CountPis(p,p->vVarsInt), Msat_IntVecReadSize(p->vVarsInt) ); - - - // get the complemented attribute - fComp = Fraig_NodeComparePhase( pOld, pNew ); -//Msat_SolverPrintClauses( p->pSat ); - - //////////////////////////////////////////// - // prepare the solver to run incrementally on these variables -//clk = clock(); - Msat_SolverPrepare( p->pSat, p->vVarsInt ); -//p->time3 += clock() - clk; - - // solve under assumptions - // A = 1; B = 0 OR A = 1; B = 1 - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pOld->Num, 0) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNew->Num, !fComp) ); - // run the solver -clk = clock(); - RetValue1 = Msat_SolverSolve( p->pSat, p->vProj, nBTLimit, 1000000 ); -p->timeSat += clock() - clk; - - if ( RetValue1 == MSAT_FALSE ) - { -//p->time1 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "unsat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - - // add the clause - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pOld->Num, 1) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNew->Num, fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); -// p->nSatProofImp++; - return 1; - } - else if ( RetValue1 == MSAT_TRUE ) - { -//p->time2 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "sat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - // record the counter example - Fraig_FeedBack( p, Msat_SolverReadModelArray(p->pSat), p->vVarsInt, pOld, pNew ); - p->nSatCounterImp++; - return 0; - } - else // if ( RetValue1 == MSAT_UNKNOWN ) - { -p->time3 += clock() - clk; - p->nSatFailsImp++; - return 0; - } -} - -/**Function************************************************************* - - Synopsis [Prepares the SAT solver to run on the two nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManCheckClauseUsingSat( Fraig_Man_t * p, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int nBTLimit ) -{ - Fraig_Node_t * pNode1R, * pNode2R; - int RetValue, RetValue1, i, clk; - int fVerbose = 0; - - pNode1R = Fraig_Regular(pNode1); - pNode2R = Fraig_Regular(pNode2); - assert( pNode1R != pNode2R ); - - // make sure the solver is allocated and has enough variables - if ( p->pSat == NULL ) - Fraig_ManCreateSolver( p ); - // make sure the SAT solver has enough variables - for ( i = Msat_SolverReadVarNum(p->pSat); i < p->vNodes->nSize; i++ ) - Msat_SolverAddVar( p->pSat, p->vNodes->pArray[i]->Level ); - - // get the logic cone -clk = clock(); - Fraig_OrderVariables( p, pNode1R, pNode2R ); -// Fraig_PrepareCones( p, pNode1R, pNode2R ); -p->timeTrav += clock() - clk; - - //////////////////////////////////////////// - // prepare the solver to run incrementally on these variables -//clk = clock(); - Msat_SolverPrepare( p->pSat, p->vVarsInt ); -//p->time3 += clock() - clk; - - // solve under assumptions - // A = 1; B = 0 OR A = 1; B = 1 - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode1R->Num, !Fraig_IsComplement(pNode1)) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode2R->Num, !Fraig_IsComplement(pNode2)) ); - // run the solver -clk = clock(); - RetValue1 = Msat_SolverSolve( p->pSat, p->vProj, nBTLimit, 1000000 ); -p->timeSat += clock() - clk; - - if ( RetValue1 == MSAT_FALSE ) - { -//p->time1 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "unsat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - - // add the clause - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode1R->Num, Fraig_IsComplement(pNode1)) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode2R->Num, Fraig_IsComplement(pNode2)) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); -// p->nSatProofImp++; - return 1; - } - else if ( RetValue1 == MSAT_TRUE ) - { -//p->time2 += clock() - clk; - -if ( fVerbose ) -{ -// printf( "sat %d ", Msat_SolverReadBackTracks(p->pSat) ); -//ABC_PRT( "time", clock() - clk ); -} - // record the counter example -// Fraig_FeedBack( p, Msat_SolverReadModelArray(p->pSat), p->vVarsInt, pNode1R, pNode2R ); - p->nSatCounterImp++; - return 0; - } - else // if ( RetValue1 == MSAT_UNKNOWN ) - { -p->time3 += clock() - clk; - p->nSatFailsImp++; - return 0; - } -} - - -/**Function************************************************************* - - Synopsis [Prepares the SAT solver to run on the two nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_PrepareCones( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ -// Msat_IntVec_t * vAdjs; -// int * pVars, nVars, i, k; - int nVarsAlloc; - - assert( pOld != pNew ); - assert( !Fraig_IsComplement(pOld) ); - assert( !Fraig_IsComplement(pNew) ); - // clean the variables - nVarsAlloc = Msat_IntVecReadSize(pMan->vVarsUsed); - Msat_IntVecFill( pMan->vVarsUsed, nVarsAlloc, 0 ); - Msat_IntVecClear( pMan->vVarsInt ); - - pMan->nTravIds++; - Fraig_PrepareCones_rec( pMan, pNew ); - Fraig_PrepareCones_rec( pMan, pOld ); - - -/* - nVars = Msat_IntVecReadSize( pMan->vVarsInt ); - pVars = Msat_IntVecReadArray( pMan->vVarsInt ); - for ( i = 0; i < nVars; i++ ) - { - // process its connections - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pVars[i] ); - printf( "%d=%d { ", pVars[i], Msat_IntVecReadSize(vAdjs) ); - for ( k = 0; k < Msat_IntVecReadSize(vAdjs); k++ ) - printf( "%d ", Msat_IntVecReadEntry(vAdjs,k) ); - printf( "}\n" ); - - } - i = 0; -*/ -} - -/**Function************************************************************* - - Synopsis [Traverses the cone, collects the numbers and adds the clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_PrepareCones_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pFanin; - Msat_IntVec_t * vAdjs; - int fUseMuxes = 1, i; - int fItIsTime; - - // skip if the node is aleady visited - assert( !Fraig_IsComplement(pNode) ); - if ( pNode->TravId == pMan->nTravIds ) - return; - pNode->TravId = pMan->nTravIds; - - // collect the node's number (closer to reverse topological order) - Msat_IntVecPush( pMan->vVarsInt, pNode->Num ); - Msat_IntVecWriteEntry( pMan->vVarsUsed, pNode->Num, 1 ); - if ( !Fraig_NodeIsAnd( pNode ) ) - return; - - // if the node does not have fanins, create them - fItIsTime = 0; - if ( pNode->vFanins == NULL ) - { - fItIsTime = 1; - // create the fanins of the supergate - assert( pNode->fClauses == 0 ); - if ( fUseMuxes && Fraig_NodeIsMuxType(pNode) ) - { - pNode->vFanins = Fraig_NodeVecAlloc( 4 ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p1)->p1) ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p1)->p2) ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p2)->p1) ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p2)->p2) ); - Fraig_SupergateAddClausesMux( pMan, pNode ); - } - else - { - pNode->vFanins = Fraig_CollectSupergate( pNode, fUseMuxes ); - Fraig_SupergateAddClauses( pMan, pNode, pNode->vFanins ); - } - assert( pNode->vFanins->nSize > 1 ); - pNode->fClauses = 1; - pMan->nVarsClauses++; - - // add fanins - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pNode->Num ); - assert( Msat_IntVecReadSize( vAdjs ) == 0 ); - for ( i = 0; i < pNode->vFanins->nSize; i++ ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[i]); - Msat_IntVecPush( vAdjs, pFanin->Num ); - } - } - - // recursively visit the fanins - for ( i = 0; i < pNode->vFanins->nSize; i++ ) - Fraig_PrepareCones_rec( pMan, Fraig_Regular(pNode->vFanins->pArray[i]) ); - - if ( fItIsTime ) - { - // recursively visit the fanins - for ( i = 0; i < pNode->vFanins->nSize; i++ ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[i]); - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pFanin->Num ); - Msat_IntVecPush( vAdjs, pNode->Num ); - } - } -} - -/**Function************************************************************* - - Synopsis [Collect variables using their proximity from the nodes.] - - Description [This procedure creates a variable order based on collecting - first the nodes that are the closest to the given two target nodes.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_OrderVariables( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - Fraig_Node_t * pNode, * pFanin; - int i, k, Number, fUseMuxes = 1; - int nVarsAlloc; - - assert( pOld != pNew ); - assert( !Fraig_IsComplement(pOld) ); - assert( !Fraig_IsComplement(pNew) ); - - pMan->nTravIds++; - - // clean the variables - nVarsAlloc = Msat_IntVecReadSize(pMan->vVarsUsed); - Msat_IntVecFill( pMan->vVarsUsed, nVarsAlloc, 0 ); - Msat_IntVecClear( pMan->vVarsInt ); - - // add the first node - Msat_IntVecPush( pMan->vVarsInt, pOld->Num ); - Msat_IntVecWriteEntry( pMan->vVarsUsed, pOld->Num, 1 ); - pOld->TravId = pMan->nTravIds; - - // add the second node - Msat_IntVecPush( pMan->vVarsInt, pNew->Num ); - Msat_IntVecWriteEntry( pMan->vVarsUsed, pNew->Num, 1 ); - pNew->TravId = pMan->nTravIds; - - // create the variable order - for ( i = 0; i < Msat_IntVecReadSize(pMan->vVarsInt); i++ ) - { - // get the new node on the frontier - Number = Msat_IntVecReadEntry(pMan->vVarsInt, i); - pNode = pMan->vNodes->pArray[Number]; - if ( !Fraig_NodeIsAnd(pNode) ) - continue; - - // if the node does not have fanins, create them - if ( pNode->vFanins == NULL ) - { - // create the fanins of the supergate - assert( pNode->fClauses == 0 ); - // detecting a fanout-free cone (experiment only) -// Fraig_DetectFanoutFreeCone( pMan, pNode ); - - if ( fUseMuxes && Fraig_NodeIsMuxType(pNode) ) - { - pNode->vFanins = Fraig_NodeVecAlloc( 4 ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p1)->p1) ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p1)->p2) ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p2)->p1) ); - Fraig_NodeVecPushUnique( pNode->vFanins, Fraig_Regular(Fraig_Regular(pNode->p2)->p2) ); - Fraig_SupergateAddClausesMux( pMan, pNode ); -// Fraig_DetectFanoutFreeConeMux( pMan, pNode ); - - nMuxes++; - } - else - { - pNode->vFanins = Fraig_CollectSupergate( pNode, fUseMuxes ); - Fraig_SupergateAddClauses( pMan, pNode, pNode->vFanins ); - } - assert( pNode->vFanins->nSize > 1 ); - pNode->fClauses = 1; - pMan->nVarsClauses++; - - pNode->fMark2 = 1; // goes together with Fraig_SetupAdjacentMark() - } - - // explore the implication fanins of pNode - for ( k = 0; k < pNode->vFanins->nSize; k++ ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[k]); - if ( pFanin->TravId == pMan->nTravIds ) // already collected - continue; - // collect and mark - Msat_IntVecPush( pMan->vVarsInt, pFanin->Num ); - Msat_IntVecWriteEntry( pMan->vVarsUsed, pFanin->Num, 1 ); - pFanin->TravId = pMan->nTravIds; - } - } - - // set up the adjacent variable information -// Fraig_SetupAdjacent( pMan, pMan->vVarsInt ); - Fraig_SetupAdjacentMark( pMan, pMan->vVarsInt ); -} - - - -/**Function************************************************************* - - Synopsis [Set up the adjacent variable information.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_SetupAdjacent( Fraig_Man_t * pMan, Msat_IntVec_t * vConeVars ) -{ - Fraig_Node_t * pNode, * pFanin; - Msat_IntVec_t * vAdjs; - int * pVars, nVars, i, k; - - // clean the adjacents for the variables - nVars = Msat_IntVecReadSize( vConeVars ); - pVars = Msat_IntVecReadArray( vConeVars ); - for ( i = 0; i < nVars; i++ ) - { - // process its connections - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pVars[i] ); - Msat_IntVecClear( vAdjs ); - - pNode = pMan->vNodes->pArray[pVars[i]]; - if ( !Fraig_NodeIsAnd(pNode) ) - continue; - - // add fanins - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pVars[i] ); - for ( k = 0; k < pNode->vFanins->nSize; k++ ) -// for ( k = pNode->vFanins->nSize - 1; k >= 0; k-- ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[k]); - Msat_IntVecPush( vAdjs, pFanin->Num ); -// Msat_IntVecPushUniqueOrder( vAdjs, pFanin->Num ); - } - } - // add the fanouts - for ( i = 0; i < nVars; i++ ) - { - pNode = pMan->vNodes->pArray[pVars[i]]; - if ( !Fraig_NodeIsAnd(pNode) ) - continue; - - // add the edges - for ( k = 0; k < pNode->vFanins->nSize; k++ ) -// for ( k = pNode->vFanins->nSize - 1; k >= 0; k-- ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[k]); - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pFanin->Num ); - Msat_IntVecPush( vAdjs, pNode->Num ); -// Msat_IntVecPushUniqueOrder( vAdjs, pFanin->Num ); - } - } -} - - -/**Function************************************************************* - - Synopsis [Set up the adjacent variable information.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_SetupAdjacentMark( Fraig_Man_t * pMan, Msat_IntVec_t * vConeVars ) -{ - Fraig_Node_t * pNode, * pFanin; - Msat_IntVec_t * vAdjs; - int * pVars, nVars, i, k; - - // clean the adjacents for the variables - nVars = Msat_IntVecReadSize( vConeVars ); - pVars = Msat_IntVecReadArray( vConeVars ); - for ( i = 0; i < nVars; i++ ) - { - pNode = pMan->vNodes->pArray[pVars[i]]; - if ( pNode->fMark2 == 0 ) - continue; -// pNode->fMark2 = 0; - - // process its connections -// vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pVars[i] ); -// Msat_IntVecClear( vAdjs ); - - if ( !Fraig_NodeIsAnd(pNode) ) - continue; - - // add fanins - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pVars[i] ); - for ( k = 0; k < pNode->vFanins->nSize; k++ ) -// for ( k = pNode->vFanins->nSize - 1; k >= 0; k-- ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[k]); - Msat_IntVecPush( vAdjs, pFanin->Num ); -// Msat_IntVecPushUniqueOrder( vAdjs, pFanin->Num ); - } - } - // add the fanouts - for ( i = 0; i < nVars; i++ ) - { - pNode = pMan->vNodes->pArray[pVars[i]]; - if ( pNode->fMark2 == 0 ) - continue; - pNode->fMark2 = 0; - - if ( !Fraig_NodeIsAnd(pNode) ) - continue; - - // add the edges - for ( k = 0; k < pNode->vFanins->nSize; k++ ) -// for ( k = pNode->vFanins->nSize - 1; k >= 0; k-- ) - { - pFanin = Fraig_Regular(pNode->vFanins->pArray[k]); - vAdjs = (Msat_IntVec_t *)Msat_ClauseVecReadEntry( pMan->vAdjacents, pFanin->Num ); - Msat_IntVecPush( vAdjs, pNode->Num ); -// Msat_IntVecPushUniqueOrder( vAdjs, pFanin->Num ); - } - } -} - - - - -/**Function************************************************************* - - Synopsis [Adds clauses to the solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_SupergateAddClauses( Fraig_Man_t * p, Fraig_Node_t * pNode, Fraig_NodeVec_t * vSuper ) -{ - int fComp1, RetValue, nVars, Var, Var1, i; - - assert( Fraig_NodeIsAnd( pNode ) ); - nVars = Msat_SolverReadVarNum(p->pSat); - - Var = pNode->Num; - assert( Var < nVars ); - for ( i = 0; i < vSuper->nSize; i++ ) - { - // get the predecessor nodes - // get the complemented attributes of the nodes - fComp1 = Fraig_IsComplement(vSuper->pArray[i]); - // determine the variable numbers - Var1 = Fraig_Regular(vSuper->pArray[i])->Num; - // check that the variables are in the SAT manager - assert( Var1 < nVars ); - - // suppose the AND-gate is A * B = C - // add !A => !C or A + !C - // fprintf( pFile, "%d %d 0%c", Var1, -Var, 10 ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(Var1, fComp1) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(Var, 1) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - } - - // add A & B => C or !A + !B + C -// fprintf( pFile, "%d %d %d 0%c", -Var1, -Var2, Var, 10 ); - Msat_IntVecClear( p->vProj ); - for ( i = 0; i < vSuper->nSize; i++ ) - { - // get the predecessor nodes - // get the complemented attributes of the nodes - fComp1 = Fraig_IsComplement(vSuper->pArray[i]); - // determine the variable numbers - Var1 = Fraig_Regular(vSuper->pArray[i])->Num; - - // add this variable to the array - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(Var1, !fComp1) ); - } - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(Var, 0) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); -} - -/**Function************************************************************* - - Synopsis [Adds clauses to the solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_SupergateAddClausesExor( Fraig_Man_t * p, Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNode1, * pNode2; - int fComp, RetValue; - - assert( !Fraig_IsComplement( pNode ) ); - assert( Fraig_NodeIsExorType( pNode ) ); - // get nodes - pNode1 = Fraig_Regular(Fraig_Regular(pNode->p1)->p1); - pNode2 = Fraig_Regular(Fraig_Regular(pNode->p1)->p2); - // get the complemented attribute of the EXOR/NEXOR gate - fComp = Fraig_NodeIsExor( pNode ); // 1 if EXOR, 0 if NEXOR - - // create four clauses - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode->Num, fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode1->Num, fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode2->Num, fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode->Num, fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode1->Num, !fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode2->Num, !fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode->Num, !fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode1->Num, fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode2->Num, !fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode->Num, !fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode1->Num, !fComp) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(pNode2->Num, fComp) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); -} - -/**Function************************************************************* - - Synopsis [Adds clauses to the solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_SupergateAddClausesMux( Fraig_Man_t * p, Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNodeI, * pNodeT, * pNodeE; - int RetValue, VarF, VarI, VarT, VarE, fCompT, fCompE; - - assert( !Fraig_IsComplement( pNode ) ); - assert( Fraig_NodeIsMuxType( pNode ) ); - // get nodes (I = if, T = then, E = else) - pNodeI = Fraig_NodeRecognizeMux( pNode, &pNodeT, &pNodeE ); - // get the variable numbers - VarF = pNode->Num; - VarI = pNodeI->Num; - VarT = Fraig_Regular(pNodeT)->Num; - VarE = Fraig_Regular(pNodeE)->Num; - // get the complementation flags - fCompT = Fraig_IsComplement(pNodeT); - fCompE = Fraig_IsComplement(pNodeE); - - // f = ITE(i, t, e) - - // i' + t' + f - // i' + t + f' - // i + e' + f - // i + e + f' - - // create four clauses - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarI, 1) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarT, 1^fCompT) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarF, 0) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarI, 1) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarT, 0^fCompT) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarF, 1) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarI, 0) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarE, 1^fCompE) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarF, 0) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarI, 0) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarE, 0^fCompE) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarF, 1) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - - // two additional clauses - // t' & e' -> f' - // t & e -> f - - // t + e + f' - // t' + e' + f - - if ( VarT == VarE ) - { -// assert( fCompT == !fCompE ); - return; - } - - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarT, 0^fCompT) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarE, 0^fCompE) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarF, 1) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - Msat_IntVecClear( p->vProj ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarT, 1^fCompT) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarE, 1^fCompE) ); - Msat_IntVecPush( p->vProj, MSAT_VAR2LIT(VarF, 0) ); - RetValue = Msat_SolverAddClause( p->pSat, p->vProj ); - assert( RetValue ); - -} - - - - - -/**Function************************************************************* - - Synopsis [Returns the array of nodes to be combined into one multi-input AND-gate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_DetectFanoutFreeCone_rec( Fraig_Node_t * pNode, Fraig_NodeVec_t * vSuper, Fraig_NodeVec_t * vInside, int fFirst ) -{ - // make the pointer regular - pNode = Fraig_Regular(pNode); - // if the new node is complemented or a PI, another gate begins - if ( (!fFirst && pNode->nRefs > 1) || Fraig_NodeIsVar(pNode) ) - { - Fraig_NodeVecPushUnique( vSuper, pNode ); - return; - } - // go through the branches - Fraig_DetectFanoutFreeCone_rec( pNode->p1, vSuper, vInside, 0 ); - Fraig_DetectFanoutFreeCone_rec( pNode->p2, vSuper, vInside, 0 ); - // add the node - Fraig_NodeVecPushUnique( vInside, pNode ); -} - -/**Function************************************************************* - - Synopsis [Returns the array of nodes to be combined into one multi-input AND-gate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -/* -void Fraig_DetectFanoutFreeCone( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - Fraig_NodeVec_t * vFanins; - Fraig_NodeVec_t * vInside; - int nCubes; - extern int Fraig_CutSopCountCubes( Fraig_Man_t * pMan, Fraig_NodeVec_t * vFanins, Fraig_NodeVec_t * vInside ); - - vFanins = Fraig_NodeVecAlloc( 8 ); - vInside = Fraig_NodeVecAlloc( 8 ); - - Fraig_DetectFanoutFreeCone_rec( pNode, vFanins, vInside, 1 ); - assert( vInside->pArray[vInside->nSize-1] == pNode ); - - nCubes = Fraig_CutSopCountCubes( pMan, vFanins, vInside ); - -printf( "%d(%d)", vFanins->nSize, nCubes ); - Fraig_NodeVecFree( vFanins ); - Fraig_NodeVecFree( vInside ); -} -*/ - - - -/**Function************************************************************* - - Synopsis [Returns the array of nodes to be combined into one multi-input AND-gate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_DetectFanoutFreeConeMux_rec( Fraig_Node_t * pNode, Fraig_NodeVec_t * vSuper, Fraig_NodeVec_t * vInside, int fFirst ) -{ - // make the pointer regular - pNode = Fraig_Regular(pNode); - // if the new node is complemented or a PI, another gate begins - if ( (!fFirst && pNode->nRefs > 1) || Fraig_NodeIsVar(pNode) || !Fraig_NodeIsMuxType(pNode) ) - { - Fraig_NodeVecPushUnique( vSuper, pNode ); - return; - } - // go through the branches - Fraig_DetectFanoutFreeConeMux_rec( Fraig_Regular(pNode->p1)->p1, vSuper, vInside, 0 ); - Fraig_DetectFanoutFreeConeMux_rec( Fraig_Regular(pNode->p1)->p2, vSuper, vInside, 0 ); - Fraig_DetectFanoutFreeConeMux_rec( Fraig_Regular(pNode->p2)->p1, vSuper, vInside, 0 ); - Fraig_DetectFanoutFreeConeMux_rec( Fraig_Regular(pNode->p2)->p2, vSuper, vInside, 0 ); - // add the node - Fraig_NodeVecPushUnique( vInside, pNode ); -} - -/**Function************************************************************* - - Synopsis [Returns the array of nodes to be combined into one multi-input AND-gate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_DetectFanoutFreeConeMux( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - Fraig_NodeVec_t * vFanins; - Fraig_NodeVec_t * vInside; - int nCubes; - extern int Fraig_CutSopCountCubes( Fraig_Man_t * pMan, Fraig_NodeVec_t * vFanins, Fraig_NodeVec_t * vInside ); - - vFanins = Fraig_NodeVecAlloc( 8 ); - vInside = Fraig_NodeVecAlloc( 8 ); - - Fraig_DetectFanoutFreeConeMux_rec( pNode, vFanins, vInside, 1 ); - assert( vInside->pArray[vInside->nSize-1] == pNode ); - -// nCubes = Fraig_CutSopCountCubes( pMan, vFanins, vInside ); - nCubes = 0; - -printf( "%d(%d)", vFanins->nSize, nCubes ); - Fraig_NodeVecFree( vFanins ); - Fraig_NodeVecFree( vInside ); -} - - - -/**Function************************************************************* - - Synopsis [Collect variables using their proximity from the nodes.] - - Description [This procedure creates a variable order based on collecting - first the nodes that are the closest to the given two target nodes.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_SetActivity( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - Fraig_Node_t * pNode; - int i, Number, MaxLevel; - float * pFactors = Msat_SolverReadFactors(pMan->pSat); - if ( pFactors == NULL ) - return; - MaxLevel = ABC_MAX( pOld->Level, pNew->Level ); - // create the variable order - for ( i = 0; i < Msat_IntVecReadSize(pMan->vVarsInt); i++ ) - { - // get the new node on the frontier - Number = Msat_IntVecReadEntry(pMan->vVarsInt, i); - pNode = pMan->vNodes->pArray[Number]; - pFactors[pNode->Num] = (float)pow( 0.97, MaxLevel - pNode->Level ); -// if ( pNode->Num % 50 == 0 ) -// printf( "(%d) %.2f ", MaxLevel - pNode->Level, pFactors[pNode->Num] ); - } -// printf( "\n" ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigTable.c b/src/sat/fraig/fraigTable.c deleted file mode 100644 index 79ab7ffc..00000000 --- a/src/sat/fraig/fraigTable.c +++ /dev/null @@ -1,662 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigTable.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Structural and functional hash tables.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigTable.c,v 1.7 2005/07/08 01:01:34 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -static void Fraig_TableResizeS( Fraig_HashTable_t * p ); -static void Fraig_TableResizeF( Fraig_HashTable_t * p, int fUseSimR ); - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Allocates the hash table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_HashTable_t * Fraig_HashTableCreate( int nSize ) -{ - Fraig_HashTable_t * p; - // allocate the table - p = ABC_ALLOC( Fraig_HashTable_t, 1 ); - memset( p, 0, sizeof(Fraig_HashTable_t) ); - // allocate and clean the bins - p->nBins = Cudd_PrimeFraig(nSize); - p->pBins = ABC_ALLOC( Fraig_Node_t *, p->nBins ); - memset( p->pBins, 0, sizeof(Fraig_Node_t *) * p->nBins ); - return p; -} - -/**Function************************************************************* - - Synopsis [Deallocates the supergate hash table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_HashTableFree( Fraig_HashTable_t * p ) -{ - ABC_FREE( p->pBins ); - ABC_FREE( p ); -} - -/**Function************************************************************* - - Synopsis [Looks up an entry in the structural hash table.] - - Description [If the entry with the same children does not exists, - creates it, inserts it into the table, and returns 0. If the entry - with the same children exists, finds it, and return 1. In both cases, - the new/old entry is returned in ppNodeRes.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_HashTableLookupS( Fraig_Man_t * pMan, Fraig_Node_t * p1, Fraig_Node_t * p2, Fraig_Node_t ** ppNodeRes ) -{ - Fraig_HashTable_t * p = pMan->pTableS; - Fraig_Node_t * pEnt; - unsigned Key; - - // order the arguments - if ( Fraig_Regular(p1)->Num > Fraig_Regular(p2)->Num ) - pEnt = p1, p1 = p2, p2 = pEnt; - - Key = Fraig_HashKey2( p1, p2, p->nBins ); - Fraig_TableBinForEachEntryS( p->pBins[Key], pEnt ) - if ( pEnt->p1 == p1 && pEnt->p2 == p2 ) - { - *ppNodeRes = pEnt; - return 1; - } - // check if it is a good time for table resizing - if ( p->nEntries >= 2 * p->nBins ) - { - Fraig_TableResizeS( p ); - Key = Fraig_HashKey2( p1, p2, p->nBins ); - } - // create the new node - pEnt = Fraig_NodeCreate( pMan, p1, p2 ); - // add the node to the corresponding linked list in the table - pEnt->pNextS = p->pBins[Key]; - p->pBins[Key] = pEnt; - *ppNodeRes = pEnt; - p->nEntries++; - return 0; -} - - -/**Function************************************************************* - - Synopsis [Insert the entry in the functional hash table.] - - Description [If the entry with the same key exists, return it right away. - If the entry with the same key does not exists, inserts it and returns NULL. ] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_HashTableLookupF( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - Fraig_HashTable_t * p = pMan->pTableF; - Fraig_Node_t * pEnt, * pEntD; - unsigned Key; - - // go through the hash table entries - Key = pNode->uHashR % p->nBins; - Fraig_TableBinForEachEntryF( p->pBins[Key], pEnt ) - { - // if their simulation info differs, skip - if ( !Fraig_CompareSimInfo( pNode, pEnt, pMan->nWordsRand, 1 ) ) - continue; - // equivalent up to the complement - Fraig_TableBinForEachEntryD( pEnt, pEntD ) - { - // if their simulation info differs, skip - if ( !Fraig_CompareSimInfo( pNode, pEntD, pMan->iWordStart, 0 ) ) - continue; - // found a simulation-equivalent node - return pEntD; - } - // did not find a simulation equivalent node - // add the node to the corresponding linked list - pNode->pNextD = pEnt->pNextD; - pEnt->pNextD = pNode; - // return NULL, because there is no functional equivalence in this case - return NULL; - } - - // check if it is a good time for table resizing - if ( p->nEntries >= 2 * p->nBins ) - { - Fraig_TableResizeF( p, 1 ); - Key = pNode->uHashR % p->nBins; - } - - // add the node to the corresponding linked list in the table - pNode->pNextF = p->pBins[Key]; - p->pBins[Key] = pNode; - p->nEntries++; - // return NULL, because there is no functional equivalence in this case - return NULL; -} - -/**Function************************************************************* - - Synopsis [Insert the entry in the functional hash table.] - - Description [If the entry with the same key exists, return it right away. - If the entry with the same key does not exists, inserts it and returns NULL. ] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_HashTableLookupF0( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - Fraig_HashTable_t * p = pMan->pTableF0; - Fraig_Node_t * pEnt; - unsigned Key; - - // go through the hash table entries - Key = pNode->uHashD % p->nBins; - Fraig_TableBinForEachEntryF( p->pBins[Key], pEnt ) - { - // if their simulation info differs, skip - if ( !Fraig_CompareSimInfo( pNode, pEnt, pMan->iWordStart, 0 ) ) - continue; - // found a simulation-equivalent node - return pEnt; - } - - // check if it is a good time for table resizing - if ( p->nEntries >= 2 * p->nBins ) - { - Fraig_TableResizeF( p, 0 ); - Key = pNode->uHashD % p->nBins; - } - - // add the node to the corresponding linked list in the table - pNode->pNextF = p->pBins[Key]; - p->pBins[Key] = pNode; - p->nEntries++; - // return NULL, because there is no functional equivalence in this case - return NULL; -} - -/**Function************************************************************* - - Synopsis [Insert the entry in the functional hash table.] - - Description [Unconditionally add the node to the corresponding - linked list in the table.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_HashTableInsertF0( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - Fraig_HashTable_t * p = pMan->pTableF0; - unsigned Key = pNode->uHashD % p->nBins; - - pNode->pNextF = p->pBins[Key]; - p->pBins[Key] = pNode; - p->nEntries++; -} - - -/**Function************************************************************* - - Synopsis [Resizes the table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_TableResizeS( Fraig_HashTable_t * p ) -{ - Fraig_Node_t ** pBinsNew; - Fraig_Node_t * pEnt, * pEnt2; - int nBinsNew, Counter, i, clk; - unsigned Key; - -clk = clock(); - // get the new table size - nBinsNew = Cudd_PrimeFraig(2 * p->nBins); - // allocate a new array - pBinsNew = ABC_ALLOC( Fraig_Node_t *, nBinsNew ); - memset( pBinsNew, 0, sizeof(Fraig_Node_t *) * nBinsNew ); - // rehash the entries from the old table - Counter = 0; - for ( i = 0; i < p->nBins; i++ ) - Fraig_TableBinForEachEntrySafeS( p->pBins[i], pEnt, pEnt2 ) - { - Key = Fraig_HashKey2( pEnt->p1, pEnt->p2, nBinsNew ); - pEnt->pNextS = pBinsNew[Key]; - pBinsNew[Key] = pEnt; - Counter++; - } - assert( Counter == p->nEntries ); -// printf( "Increasing the structural table size from %6d to %6d. ", p->nBins, nBinsNew ); -// ABC_PRT( "Time", clock() - clk ); - // replace the table and the parameters - ABC_FREE( p->pBins ); - p->pBins = pBinsNew; - p->nBins = nBinsNew; -} - -/**Function************************************************************* - - Synopsis [Resizes the table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_TableResizeF( Fraig_HashTable_t * p, int fUseSimR ) -{ - Fraig_Node_t ** pBinsNew; - Fraig_Node_t * pEnt, * pEnt2; - int nBinsNew, Counter, i, clk; - unsigned Key; - -clk = clock(); - // get the new table size - nBinsNew = Cudd_PrimeFraig(2 * p->nBins); - // allocate a new array - pBinsNew = ABC_ALLOC( Fraig_Node_t *, nBinsNew ); - memset( pBinsNew, 0, sizeof(Fraig_Node_t *) * nBinsNew ); - // rehash the entries from the old table - Counter = 0; - for ( i = 0; i < p->nBins; i++ ) - Fraig_TableBinForEachEntrySafeF( p->pBins[i], pEnt, pEnt2 ) - { - if ( fUseSimR ) - Key = pEnt->uHashR % nBinsNew; - else - Key = pEnt->uHashD % nBinsNew; - pEnt->pNextF = pBinsNew[Key]; - pBinsNew[Key] = pEnt; - Counter++; - } - assert( Counter == p->nEntries ); -// printf( "Increasing the functional table size from %6d to %6d. ", p->nBins, nBinsNew ); -// ABC_PRT( "Time", clock() - clk ); - // replace the table and the parameters - ABC_FREE( p->pBins ); - p->pBins = pBinsNew; - p->nBins = nBinsNew; -} - - -/**Function************************************************************* - - Synopsis [Compares two pieces of simulation info.] - - Description [Returns 1 if they are equal.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CompareSimInfo( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand ) -{ - int i; - assert( !Fraig_IsComplement(pNode1) ); - assert( !Fraig_IsComplement(pNode2) ); - if ( fUseRand ) - { - // if their signatures differ, skip - if ( pNode1->uHashR != pNode2->uHashR ) - return 0; - // check the simulation info - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimR[i] != pNode2->puSimR[i] ) - return 0; - } - else - { - // if their signatures differ, skip - if ( pNode1->uHashD != pNode2->uHashD ) - return 0; - // check the simulation info - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimD[i] != pNode2->puSimD[i] ) - return 0; - } - return 1; -} - -/**Function************************************************************* - - Synopsis [Find the number of the different pattern.] - - Description [Returns -1 if there is no such pattern] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_FindFirstDiff( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int fCompl, int iWordLast, int fUseRand ) -{ - int i, v; - assert( !Fraig_IsComplement(pNode1) ); - assert( !Fraig_IsComplement(pNode2) ); - // take into account possible internal complementation - fCompl ^= pNode1->fInv; - fCompl ^= pNode2->fInv; - // find the pattern - if ( fCompl ) - { - if ( fUseRand ) - { - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimR[i] != ~pNode2->puSimR[i] ) - for ( v = 0; v < 32; v++ ) - if ( (pNode1->puSimR[i] ^ ~pNode2->puSimR[i]) & (1 << v) ) - return i * 32 + v; - } - else - { - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimD[i] != ~pNode2->puSimD[i] ) - for ( v = 0; v < 32; v++ ) - if ( (pNode1->puSimD[i] ^ ~pNode2->puSimD[i]) & (1 << v) ) - return i * 32 + v; - } - } - else - { - if ( fUseRand ) - { - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimR[i] != pNode2->puSimR[i] ) - for ( v = 0; v < 32; v++ ) - if ( (pNode1->puSimR[i] ^ pNode2->puSimR[i]) & (1 << v) ) - return i * 32 + v; - } - else - { - for ( i = 0; i < iWordLast; i++ ) - if ( pNode1->puSimD[i] != pNode2->puSimD[i] ) - for ( v = 0; v < 32; v++ ) - if ( (pNode1->puSimD[i] ^ pNode2->puSimD[i]) & (1 << v) ) - return i * 32 + v; - } - } - return -1; -} - -/**Function************************************************************* - - Synopsis [Compares two pieces of simulation info.] - - Description [Returns 1 if they are equal.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CompareSimInfoUnderMask( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand, unsigned * puMask ) -{ - unsigned * pSims1, * pSims2; - int i; - assert( !Fraig_IsComplement(pNode1) ); - assert( !Fraig_IsComplement(pNode2) ); - // get hold of simulation info - pSims1 = fUseRand? pNode1->puSimR : pNode1->puSimD; - pSims2 = fUseRand? pNode2->puSimR : pNode2->puSimD; - // check the simulation info - for ( i = 0; i < iWordLast; i++ ) - if ( (pSims1[i] & puMask[i]) != (pSims2[i] & puMask[i]) ) - return 0; - return 1; -} - -/**Function************************************************************* - - Synopsis [Compares two pieces of simulation info.] - - Description [Returns 1 if they are equal.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_CollectXors( Fraig_Node_t * pNode1, Fraig_Node_t * pNode2, int iWordLast, int fUseRand, unsigned * puMask ) -{ - unsigned * pSims1, * pSims2; - int i; - assert( !Fraig_IsComplement(pNode1) ); - assert( !Fraig_IsComplement(pNode2) ); - // get hold of simulation info - pSims1 = fUseRand? pNode1->puSimR : pNode1->puSimD; - pSims2 = fUseRand? pNode2->puSimR : pNode2->puSimD; - // check the simulation info - for ( i = 0; i < iWordLast; i++ ) - puMask[i] = ( pSims1[i] ^ pSims2[i] ); -} - - -/**Function************************************************************* - - Synopsis [Prints stats of the structural table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_TablePrintStatsS( Fraig_Man_t * pMan ) -{ - Fraig_HashTable_t * pT = pMan->pTableS; - Fraig_Node_t * pNode; - int i, Counter; - - printf( "Structural table. Table size = %d. Number of entries = %d.\n", pT->nBins, pT->nEntries ); - for ( i = 0; i < pT->nBins; i++ ) - { - Counter = 0; - Fraig_TableBinForEachEntryS( pT->pBins[i], pNode ) - Counter++; - if ( Counter > 1 ) - { - printf( "%d ", Counter ); - if ( Counter > 50 ) - printf( "{%d} ", i ); - } - } - printf( "\n" ); -} - -/**Function************************************************************* - - Synopsis [Prints stats of the structural table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_TablePrintStatsF( Fraig_Man_t * pMan ) -{ - Fraig_HashTable_t * pT = pMan->pTableF; - Fraig_Node_t * pNode; - int i, Counter; - - printf( "Functional table. Table size = %d. Number of entries = %d.\n", pT->nBins, pT->nEntries ); - for ( i = 0; i < pT->nBins; i++ ) - { - Counter = 0; - Fraig_TableBinForEachEntryF( pT->pBins[i], pNode ) - Counter++; - if ( Counter > 1 ) - printf( "{%d} ", Counter ); - } - printf( "\n" ); -} - -/**Function************************************************************* - - Synopsis [Prints stats of the structural table.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_TablePrintStatsF0( Fraig_Man_t * pMan ) -{ - Fraig_HashTable_t * pT = pMan->pTableF0; - Fraig_Node_t * pNode; - int i, Counter; - - printf( "Zero-node table. Table size = %d. Number of entries = %d.\n", pT->nBins, pT->nEntries ); - for ( i = 0; i < pT->nBins; i++ ) - { - Counter = 0; - Fraig_TableBinForEachEntryF( pT->pBins[i], pNode ) - Counter++; - if ( Counter == 0 ) - continue; -/* - printf( "\nBin = %4d : Number of entries = %4d\n", i, Counter ); - Fraig_TableBinForEachEntryF( pT->pBins[i], pNode ) - printf( "Node %5d. Hash = %10d.\n", pNode->Num, pNode->uHashD ); -*/ - } - printf( "\n" ); -} - -/**Function************************************************************* - - Synopsis [Rehashes the table after the simulation info has changed.] - - Description [Assumes that the hash values have been updated after performing - additional simulation. Rehashes the table using the new hash values. - Uses pNextF to link the entries in the bins. Uses pNextD to link the entries - with identical hash values. Returns 1 if the identical entries have been found. - Note that identical hash values may mean that the simulation data is different.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_TableRehashF0( Fraig_Man_t * pMan, int fLinkEquiv ) -{ - Fraig_HashTable_t * pT = pMan->pTableF0; - Fraig_Node_t ** pBinsNew; - Fraig_Node_t * pEntF, * pEntF2, * pEnt, * pEntD2, * pEntN; - int ReturnValue, Counter, i; - unsigned Key; - - // allocate a new array of bins - pBinsNew = ABC_ALLOC( Fraig_Node_t *, pT->nBins ); - memset( pBinsNew, 0, sizeof(Fraig_Node_t *) * pT->nBins ); - - // rehash the entries in the table - // go through all the nodes in the F-lists (and possible in D-lists, if used) - Counter = 0; - ReturnValue = 0; - for ( i = 0; i < pT->nBins; i++ ) - Fraig_TableBinForEachEntrySafeF( pT->pBins[i], pEntF, pEntF2 ) - Fraig_TableBinForEachEntrySafeD( pEntF, pEnt, pEntD2 ) - { - // decide where to put entry pEnt - Key = pEnt->uHashD % pT->nBins; - if ( fLinkEquiv ) - { - // go through the entries in the new bin - Fraig_TableBinForEachEntryF( pBinsNew[Key], pEntN ) - { - // if they have different values skip - if ( pEnt->uHashD != pEntN->uHashD ) - continue; - // they have the same hash value, add pEnt to the D-list pEnt3 - pEnt->pNextD = pEntN->pNextD; - pEntN->pNextD = pEnt; - ReturnValue = 1; - Counter++; - break; - } - if ( pEntN != NULL ) // already linked - continue; - // we did not find equal entry - } - // link the new entry - pEnt->pNextF = pBinsNew[Key]; - pBinsNew[Key] = pEnt; - pEnt->pNextD = NULL; - Counter++; - } - assert( Counter == pT->nEntries ); - // replace the table and the parameters - ABC_FREE( pT->pBins ); - pT->pBins = pBinsNew; - return ReturnValue; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigUtil.c b/src/sat/fraig/fraigUtil.c deleted file mode 100644 index 0d4cdfaf..00000000 --- a/src/sat/fraig/fraigUtil.c +++ /dev/null @@ -1,1039 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigUtil.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Various utilities.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigUtil.c,v 1.15 2005/07/08 01:01:34 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" -#include <limits.h> - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -static int bit_count[256] = { - 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5, - 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6, - 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6, - 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7, - 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6, - 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7, - 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7, - 3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8 -}; - -static void Fraig_Dfs_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode, Fraig_NodeVec_t * vNodes, int fEquiv ); -static int Fraig_CheckTfi_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode, Fraig_Node_t * pOld ); - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Computes the DFS ordering of the nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_Dfs( Fraig_Man_t * pMan, int fEquiv ) -{ - Fraig_NodeVec_t * vNodes; - int i; - pMan->nTravIds++; - vNodes = Fraig_NodeVecAlloc( 100 ); - for ( i = 0; i < pMan->vOutputs->nSize; i++ ) - Fraig_Dfs_rec( pMan, Fraig_Regular(pMan->vOutputs->pArray[i]), vNodes, fEquiv ); - return vNodes; -} - -/**Function************************************************************* - - Synopsis [Computes the DFS ordering of the nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_DfsOne( Fraig_Man_t * pMan, Fraig_Node_t * pNode, int fEquiv ) -{ - Fraig_NodeVec_t * vNodes; - pMan->nTravIds++; - vNodes = Fraig_NodeVecAlloc( 100 ); - Fraig_Dfs_rec( pMan, Fraig_Regular(pNode), vNodes, fEquiv ); - return vNodes; -} - -/**Function************************************************************* - - Synopsis [Computes the DFS ordering of the nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_DfsNodes( Fraig_Man_t * pMan, Fraig_Node_t ** ppNodes, int nNodes, int fEquiv ) -{ - Fraig_NodeVec_t * vNodes; - int i; - pMan->nTravIds++; - vNodes = Fraig_NodeVecAlloc( 100 ); - for ( i = 0; i < nNodes; i++ ) - Fraig_Dfs_rec( pMan, Fraig_Regular(ppNodes[i]), vNodes, fEquiv ); - return vNodes; -} - -/**Function************************************************************* - - Synopsis [Recursively computes the DFS ordering of the nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_Dfs_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode, Fraig_NodeVec_t * vNodes, int fEquiv ) -{ - assert( !Fraig_IsComplement(pNode) ); - // skip the visited node - if ( pNode->TravId == pMan->nTravIds ) - return; - pNode->TravId = pMan->nTravIds; - // visit the transitive fanin - if ( Fraig_NodeIsAnd(pNode) ) - { - Fraig_Dfs_rec( pMan, Fraig_Regular(pNode->p1), vNodes, fEquiv ); - Fraig_Dfs_rec( pMan, Fraig_Regular(pNode->p2), vNodes, fEquiv ); - } - if ( fEquiv && pNode->pNextE ) - Fraig_Dfs_rec( pMan, pNode->pNextE, vNodes, fEquiv ); - // save the node - Fraig_NodeVecPush( vNodes, pNode ); -} - -/**Function************************************************************* - - Synopsis [Computes the DFS ordering of the nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CountNodes( Fraig_Man_t * pMan, int fEquiv ) -{ - Fraig_NodeVec_t * vNodes; - int RetValue; - vNodes = Fraig_Dfs( pMan, fEquiv ); - RetValue = vNodes->nSize; - Fraig_NodeVecFree( vNodes ); - return RetValue; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if pOld is in the TFI of pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CheckTfi( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - assert( !Fraig_IsComplement(pOld) ); - assert( !Fraig_IsComplement(pNew) ); - pMan->nTravIds++; - return Fraig_CheckTfi_rec( pMan, pNew, pOld ); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if pOld is in the TFI of pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CheckTfi_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode, Fraig_Node_t * pOld ) -{ - // check the trivial cases - if ( pNode == NULL ) - return 0; - if ( pNode->Num < pOld->Num && !pMan->fChoicing ) - return 0; - if ( pNode == pOld ) - return 1; - // skip the visited node - if ( pNode->TravId == pMan->nTravIds ) - return 0; - pNode->TravId = pMan->nTravIds; - // check the children - if ( Fraig_CheckTfi_rec( pMan, Fraig_Regular(pNode->p1), pOld ) ) - return 1; - if ( Fraig_CheckTfi_rec( pMan, Fraig_Regular(pNode->p2), pOld ) ) - return 1; - // check equivalent nodes - return Fraig_CheckTfi_rec( pMan, pNode->pNextE, pOld ); -} - - -/**Function************************************************************* - - Synopsis [Returns 1 if pOld is in the TFI of pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CheckTfi2( Fraig_Man_t * pMan, Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - Fraig_NodeVec_t * vNodes; - int RetValue; - vNodes = Fraig_DfsOne( pMan, pNew, 1 ); - RetValue = (pOld->TravId == pMan->nTravIds); - Fraig_NodeVecFree( vNodes ); - return RetValue; -} - -/**Function************************************************************* - - Synopsis [Sets the number of fanouts (none, one, or many).] - - Description [This procedure collects the nodes reachable from - the POs of the AIG and sets the type of fanout counter (none, one, - or many) for each node. This procedure is useful to determine - fanout-free cones of AND-nodes, which is helpful for rebalancing - the AIG (see procedure Fraig_ManRebalance, or something like that).] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManMarkRealFanouts( Fraig_Man_t * p ) -{ - Fraig_NodeVec_t * vNodes; - Fraig_Node_t * pNodeR; - int i; - // collect the nodes reachable - vNodes = Fraig_Dfs( p, 0 ); - // clean the fanouts field - for ( i = 0; i < vNodes->nSize; i++ ) - { - vNodes->pArray[i]->nFanouts = 0; - vNodes->pArray[i]->pData0 = NULL; - } - // mark reachable nodes by setting the two-bit counter pNode->nFans - for ( i = 0; i < vNodes->nSize; i++ ) - { - pNodeR = Fraig_Regular(vNodes->pArray[i]->p1); - if ( pNodeR && ++pNodeR->nFanouts == 3 ) - pNodeR->nFanouts = 2; - pNodeR = Fraig_Regular(vNodes->pArray[i]->p2); - if ( pNodeR && ++pNodeR->nFanouts == 3 ) - pNodeR->nFanouts = 2; - } - Fraig_NodeVecFree( vNodes ); -} - -/**Function************************************************************* - - Synopsis [Creates the constant 1 node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_BitStringCountOnes( unsigned * pString, int nWords ) -{ - unsigned char * pSuppBytes = (unsigned char *)pString; - int i, nOnes, nBytes = sizeof(unsigned) * nWords; - // count the number of ones in the simulation vector - for ( i = nOnes = 0; i < nBytes; i++ ) - nOnes += bit_count[pSuppBytes[i]]; - return nOnes; -} - -/**Function************************************************************* - - Synopsis [Verify one useful property.] - - Description [This procedure verifies one useful property. After - the FRAIG construction with choice nodes is over, each primary node - should have fanins that are primary nodes. The primary nodes is the - one that does not have pNode->pRepr set to point to another node.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManCheckConsistency( Fraig_Man_t * p ) -{ - Fraig_Node_t * pNode; - Fraig_NodeVec_t * pVec; - int i; - pVec = Fraig_Dfs( p, 0 ); - for ( i = 0; i < pVec->nSize; i++ ) - { - pNode = pVec->pArray[i]; - if ( Fraig_NodeIsVar(pNode) ) - { - if ( pNode->pRepr ) - printf( "Primary input %d is a secondary node.\n", pNode->Num ); - } - else if ( Fraig_NodeIsConst(pNode) ) - { - if ( pNode->pRepr ) - printf( "Constant 1 %d is a secondary node.\n", pNode->Num ); - } - else - { - if ( pNode->pRepr ) - printf( "Internal node %d is a secondary node.\n", pNode->Num ); - if ( Fraig_Regular(pNode->p1)->pRepr ) - printf( "Internal node %d has first fanin %d that is a secondary node.\n", - pNode->Num, Fraig_Regular(pNode->p1)->Num ); - if ( Fraig_Regular(pNode->p2)->pRepr ) - printf( "Internal node %d has second fanin %d that is a secondary node.\n", - pNode->Num, Fraig_Regular(pNode->p2)->Num ); - } - } - Fraig_NodeVecFree( pVec ); - return 1; -} - -/**Function************************************************************* - - Synopsis [Prints the node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_PrintNode( Fraig_Man_t * p, Fraig_Node_t * pNode ) -{ - Fraig_NodeVec_t * vNodes; - Fraig_Node_t * pTemp; - int fCompl1, fCompl2, i; - - vNodes = Fraig_DfsOne( p, pNode, 0 ); - for ( i = 0; i < vNodes->nSize; i++ ) - { - pTemp = vNodes->pArray[i]; - if ( Fraig_NodeIsVar(pTemp) ) - { - printf( "%3d : PI ", pTemp->Num ); - Fraig_PrintBinary( stdout, (unsigned *)&pTemp->puSimR, 20 ); - printf( " " ); - Fraig_PrintBinary( stdout, (unsigned *)&pTemp->puSimD, 20 ); - printf( " %d\n", pTemp->fInv ); - continue; - } - - fCompl1 = Fraig_IsComplement(pTemp->p1); - fCompl2 = Fraig_IsComplement(pTemp->p2); - printf( "%3d : %c%3d %c%3d ", pTemp->Num, - (fCompl1? '-':'+'), Fraig_Regular(pTemp->p1)->Num, - (fCompl2? '-':'+'), Fraig_Regular(pTemp->p2)->Num ); - Fraig_PrintBinary( stdout, (unsigned *)&pTemp->puSimR, 20 ); - printf( " " ); - Fraig_PrintBinary( stdout, (unsigned *)&pTemp->puSimD, 20 ); - printf( " %d\n", pTemp->fInv ); - } - Fraig_NodeVecFree( vNodes ); -} - -/**Function************************************************************* - - Synopsis [Prints the bit string.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_PrintBinary( FILE * pFile, unsigned * pSign, int nBits ) -{ - int Remainder, nWords; - int w, i; - - Remainder = (nBits%(sizeof(unsigned)*8)); - nWords = (nBits/(sizeof(unsigned)*8)) + (Remainder>0); - - for ( w = nWords-1; w >= 0; w-- ) - for ( i = ((w == nWords-1 && Remainder)? Remainder-1: 31); i >= 0; i-- ) - fprintf( pFile, "%c", '0' + (int)((pSign[w] & (1<<i)) > 0) ); - -// fprintf( pFile, "\n" ); -} - -/**Function************************************************************* - - Synopsis [Sets up the mask.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_GetMaxLevel( Fraig_Man_t * pMan ) -{ - int nLevelMax, i; - nLevelMax = 0; - for ( i = 0; i < pMan->vOutputs->nSize; i++ ) - nLevelMax = nLevelMax > Fraig_Regular(pMan->vOutputs->pArray[i])->Level? - nLevelMax : Fraig_Regular(pMan->vOutputs->pArray[i])->Level; - return nLevelMax; -} - -/**Function************************************************************* - - Synopsis [Analyses choice nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_MappingUpdateLevel_rec( Fraig_Man_t * pMan, Fraig_Node_t * pNode, int fMaximum ) -{ - Fraig_Node_t * pTemp; - int Level1, Level2, LevelE; - assert( !Fraig_IsComplement(pNode) ); - if ( !Fraig_NodeIsAnd(pNode) ) - return pNode->Level; - // skip the visited node - if ( pNode->TravId == pMan->nTravIds ) - return pNode->Level; - pNode->TravId = pMan->nTravIds; - // compute levels of the children nodes - Level1 = Fraig_MappingUpdateLevel_rec( pMan, Fraig_Regular(pNode->p1), fMaximum ); - Level2 = Fraig_MappingUpdateLevel_rec( pMan, Fraig_Regular(pNode->p2), fMaximum ); - pNode->Level = 1 + ABC_MAX( Level1, Level2 ); - if ( pNode->pNextE ) - { - LevelE = Fraig_MappingUpdateLevel_rec( pMan, pNode->pNextE, fMaximum ); - if ( fMaximum ) - { - if ( pNode->Level < LevelE ) - pNode->Level = LevelE; - } - else - { - if ( pNode->Level > LevelE ) - pNode->Level = LevelE; - } - // set the level of all equivalent nodes to be the same minimum - if ( pNode->pRepr == NULL ) // the primary node - for ( pTemp = pNode->pNextE; pTemp; pTemp = pTemp->pNextE ) - pTemp->Level = pNode->Level; - } - return pNode->Level; -} - -/**Function************************************************************* - - Synopsis [Resets the levels of the nodes in the choice graph.] - - Description [Makes the level of the choice nodes to be equal to the - maximum of the level of the nodes in the equivalence class. This way - sorting by level leads to the reverse topological order, which is - needed for the required time computation.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_MappingSetChoiceLevels( Fraig_Man_t * pMan, int fMaximum ) -{ - int i; - pMan->nTravIds++; - for ( i = 0; i < pMan->vOutputs->nSize; i++ ) - Fraig_MappingUpdateLevel_rec( pMan, Fraig_Regular(pMan->vOutputs->pArray[i]), fMaximum ); -} - -/**Function************************************************************* - - Synopsis [Reports statistics on choice nodes.] - - Description [The number of choice nodes is the number of primary nodes, - which has pNextE set to a pointer. The number of choices is the number - of entries in the equivalent-node lists of the primary nodes.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManReportChoices( Fraig_Man_t * pMan ) -{ - Fraig_Node_t * pNode, * pTemp; - int nChoiceNodes, nChoices; - int i, LevelMax1, LevelMax2; - - // report the number of levels - LevelMax1 = Fraig_GetMaxLevel( pMan ); - Fraig_MappingSetChoiceLevels( pMan, 0 ); - LevelMax2 = Fraig_GetMaxLevel( pMan ); - - // report statistics about choices - nChoiceNodes = nChoices = 0; - for ( i = 0; i < pMan->vNodes->nSize; i++ ) - { - pNode = pMan->vNodes->pArray[i]; - if ( pNode->pRepr == NULL && pNode->pNextE != NULL ) - { // this is a choice node = the primary node that has equivalent nodes - nChoiceNodes++; - for ( pTemp = pNode; pTemp; pTemp = pTemp->pNextE ) - nChoices++; - } - } - printf( "Maximum level: Original = %d. Reduced due to choices = %d.\n", LevelMax1, LevelMax2 ); - printf( "Choice stats: Choice nodes = %d. Total choices = %d.\n", nChoiceNodes, nChoices ); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the node is the root of EXOR/NEXOR gate.] - - Description [The node can be complemented.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsExorType( Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNode1, * pNode2; - // make the node regular (it does not matter for EXOR/NEXOR) - pNode = Fraig_Regular(pNode); - // if the node or its children are not ANDs or not compl, this cannot be EXOR type - if ( !Fraig_NodeIsAnd(pNode) ) - return 0; - if ( !Fraig_NodeIsAnd(pNode->p1) || !Fraig_IsComplement(pNode->p1) ) - return 0; - if ( !Fraig_NodeIsAnd(pNode->p2) || !Fraig_IsComplement(pNode->p2) ) - return 0; - - // get children - pNode1 = Fraig_Regular(pNode->p1); - pNode2 = Fraig_Regular(pNode->p2); - assert( pNode1->Num < pNode2->Num ); - - // compare grandchildren - return pNode1->p1 == Fraig_Not(pNode2->p1) && pNode1->p2 == Fraig_Not(pNode2->p2); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the node is the root of MUX or EXOR/NEXOR.] - - Description [The node can be complemented.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsMuxType( Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNode1, * pNode2; - - // make the node regular (it does not matter for EXOR/NEXOR) - pNode = Fraig_Regular(pNode); - // if the node or its children are not ANDs or not compl, this cannot be EXOR type - if ( !Fraig_NodeIsAnd(pNode) ) - return 0; - if ( !Fraig_NodeIsAnd(pNode->p1) || !Fraig_IsComplement(pNode->p1) ) - return 0; - if ( !Fraig_NodeIsAnd(pNode->p2) || !Fraig_IsComplement(pNode->p2) ) - return 0; - - // get children - pNode1 = Fraig_Regular(pNode->p1); - pNode2 = Fraig_Regular(pNode->p2); - assert( pNode1->Num < pNode2->Num ); - - // compare grandchildren - // node is an EXOR/NEXOR - if ( pNode1->p1 == Fraig_Not(pNode2->p1) && pNode1->p2 == Fraig_Not(pNode2->p2) ) - return 1; - - // otherwise the node is MUX iff it has a pair of equal grandchildren - return pNode1->p1 == Fraig_Not(pNode2->p1) || - pNode1->p1 == Fraig_Not(pNode2->p2) || - pNode1->p2 == Fraig_Not(pNode2->p1) || - pNode1->p2 == Fraig_Not(pNode2->p2); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the node is EXOR, 0 if it is NEXOR.] - - Description [The node should be EXOR type and not complemented.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsExor( Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNode1; - assert( !Fraig_IsComplement(pNode) ); - assert( Fraig_NodeIsExorType(pNode) ); - assert( Fraig_IsComplement(pNode->p1) ); - // get children - pNode1 = Fraig_Regular(pNode->p1); - return Fraig_IsComplement(pNode1->p1) == Fraig_IsComplement(pNode1->p2); -} - -/**Function************************************************************* - - Synopsis [Recognizes what nodes are control and data inputs of a MUX.] - - Description [If the node is a MUX, returns the control variable C. - Assigns nodes T and E to be the then and else variables of the MUX. - Node C is never complemented. Nodes T and E can be complemented. - This function also recognizes EXOR/NEXOR gates as MUXes.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeRecognizeMux( Fraig_Node_t * pNode, Fraig_Node_t ** ppNodeT, Fraig_Node_t ** ppNodeE ) -{ - Fraig_Node_t * pNode1, * pNode2; - assert( !Fraig_IsComplement(pNode) ); - assert( Fraig_NodeIsMuxType(pNode) ); - // get children - pNode1 = Fraig_Regular(pNode->p1); - pNode2 = Fraig_Regular(pNode->p2); - // find the control variable - if ( pNode1->p1 == Fraig_Not(pNode2->p1) ) - { - if ( Fraig_IsComplement(pNode1->p1) ) - { // pNode2->p1 is positive phase of C - *ppNodeT = Fraig_Not(pNode2->p2); - *ppNodeE = Fraig_Not(pNode1->p2); - return pNode2->p1; - } - else - { // pNode1->p1 is positive phase of C - *ppNodeT = Fraig_Not(pNode1->p2); - *ppNodeE = Fraig_Not(pNode2->p2); - return pNode1->p1; - } - } - else if ( pNode1->p1 == Fraig_Not(pNode2->p2) ) - { - if ( Fraig_IsComplement(pNode1->p1) ) - { // pNode2->p2 is positive phase of C - *ppNodeT = Fraig_Not(pNode2->p1); - *ppNodeE = Fraig_Not(pNode1->p2); - return pNode2->p2; - } - else - { // pNode1->p1 is positive phase of C - *ppNodeT = Fraig_Not(pNode1->p2); - *ppNodeE = Fraig_Not(pNode2->p1); - return pNode1->p1; - } - } - else if ( pNode1->p2 == Fraig_Not(pNode2->p1) ) - { - if ( Fraig_IsComplement(pNode1->p2) ) - { // pNode2->p1 is positive phase of C - *ppNodeT = Fraig_Not(pNode2->p2); - *ppNodeE = Fraig_Not(pNode1->p1); - return pNode2->p1; - } - else - { // pNode1->p2 is positive phase of C - *ppNodeT = Fraig_Not(pNode1->p1); - *ppNodeE = Fraig_Not(pNode2->p2); - return pNode1->p2; - } - } - else if ( pNode1->p2 == Fraig_Not(pNode2->p2) ) - { - if ( Fraig_IsComplement(pNode1->p2) ) - { // pNode2->p2 is positive phase of C - *ppNodeT = Fraig_Not(pNode2->p1); - *ppNodeE = Fraig_Not(pNode1->p1); - return pNode2->p2; - } - else - { // pNode1->p2 is positive phase of C - *ppNodeT = Fraig_Not(pNode1->p1); - *ppNodeE = Fraig_Not(pNode2->p1); - return pNode1->p2; - } - } - assert( 0 ); // this is not MUX - return NULL; -} - -/**Function************************************************************* - - Synopsis [Counts the number of EXOR type nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManCountExors( Fraig_Man_t * pMan ) -{ - int i, nExors; - nExors = 0; - for ( i = 0; i < pMan->vNodes->nSize; i++ ) - nExors += Fraig_NodeIsExorType( pMan->vNodes->pArray[i] ); - return nExors; - -} - -/**Function************************************************************* - - Synopsis [Counts the number of EXOR type nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManCountMuxes( Fraig_Man_t * pMan ) -{ - int i, nMuxes; - nMuxes = 0; - for ( i = 0; i < pMan->vNodes->nSize; i++ ) - nMuxes += Fraig_NodeIsMuxType( pMan->vNodes->pArray[i] ); - return nMuxes; - -} - -/**Function************************************************************* - - Synopsis [Returns 1 if siminfo of Node1 is contained in siminfo of Node2.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeSimsContained( Fraig_Man_t * pMan, Fraig_Node_t * pNode1, Fraig_Node_t * pNode2 ) -{ - unsigned * pUnsigned1, * pUnsigned2; - int i; - - // compare random siminfo - pUnsigned1 = pNode1->puSimR; - pUnsigned2 = pNode2->puSimR; - for ( i = 0; i < pMan->nWordsRand; i++ ) - if ( pUnsigned1[i] & ~pUnsigned2[i] ) - return 0; - - // compare systematic siminfo - pUnsigned1 = pNode1->puSimD; - pUnsigned2 = pNode2->puSimD; - for ( i = 0; i < pMan->iWordStart; i++ ) - if ( pUnsigned1[i] & ~pUnsigned2[i] ) - return 0; - - return 1; -} - -/**Function************************************************************* - - Synopsis [Count the number of PI variables.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_CountPis( Fraig_Man_t * p, Msat_IntVec_t * vVarNums ) -{ - int * pVars, nVars, i, Counter; - - nVars = Msat_IntVecReadSize(vVarNums); - pVars = Msat_IntVecReadArray(vVarNums); - Counter = 0; - for ( i = 0; i < nVars; i++ ) - Counter += Fraig_NodeIsVar( p->vNodes->pArray[pVars[i]] ); - return Counter; -} - - - -/**Function************************************************************* - - Synopsis [Counts the number of EXOR type nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_ManPrintRefs( Fraig_Man_t * pMan ) -{ - Fraig_NodeVec_t * vPivots; - Fraig_Node_t * pNode, * pNode2; - int i, k, Counter, nProved; - int clk; - - vPivots = Fraig_NodeVecAlloc( 1000 ); - for ( i = 0; i < pMan->vNodes->nSize; i++ ) - { - pNode = pMan->vNodes->pArray[i]; - - if ( pNode->nOnes == 0 || pNode->nOnes == (unsigned)pMan->nWordsRand * 32 ) - continue; - - if ( pNode->nRefs > 5 ) - { - Fraig_NodeVecPush( vPivots, pNode ); -// printf( "Node %6d : nRefs = %2d Level = %3d.\n", pNode->Num, pNode->nRefs, pNode->Level ); - } - } - printf( "Total nodes = %d. Referenced nodes = %d.\n", pMan->vNodes->nSize, vPivots->nSize ); - -clk = clock(); - // count implications - Counter = nProved = 0; - for ( i = 0; i < vPivots->nSize; i++ ) - for ( k = i+1; k < vPivots->nSize; k++ ) - { - pNode = vPivots->pArray[i]; - pNode2 = vPivots->pArray[k]; - if ( Fraig_NodeSimsContained( pMan, pNode, pNode2 ) ) - { - if ( Fraig_NodeIsImplication( pMan, pNode, pNode2, -1 ) ) - nProved++; - Counter++; - } - else if ( Fraig_NodeSimsContained( pMan, pNode2, pNode ) ) - { - if ( Fraig_NodeIsImplication( pMan, pNode2, pNode, -1 ) ) - nProved++; - Counter++; - } - } - printf( "Number of candidate pairs = %d. Proved = %d.\n", Counter, nProved ); -//ABC_PRT( "Time", clock() - clk ); - return 0; -} - - -/**Function************************************************************* - - Synopsis [Checks if pNew exists among the implication fanins of pOld.] - - Description [If pNew is an implication fanin of pOld, returns 1. - If Fraig_Not(pNew) is an implication fanin of pOld, return -1. - Otherwise returns 0.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsInSupergate( Fraig_Node_t * pOld, Fraig_Node_t * pNew ) -{ - int RetValue1, RetValue2; - if ( Fraig_Regular(pOld) == Fraig_Regular(pNew) ) - return (pOld == pNew)? 1 : -1; - if ( Fraig_IsComplement(pOld) || Fraig_NodeIsVar(pOld) ) - return 0; - RetValue1 = Fraig_NodeIsInSupergate( pOld->p1, pNew ); - RetValue2 = Fraig_NodeIsInSupergate( pOld->p2, pNew ); - if ( RetValue1 == -1 || RetValue2 == -1 ) - return -1; - if ( RetValue1 == 1 || RetValue2 == 1 ) - return 1; - return 0; -} - - -/**Function************************************************************* - - Synopsis [Returns the array of nodes to be combined into one multi-input AND-gate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_CollectSupergate_rec( Fraig_Node_t * pNode, Fraig_NodeVec_t * vSuper, int fFirst, int fStopAtMux ) -{ - // if the new node is complemented or a PI, another gate begins -// if ( Fraig_IsComplement(pNode) || Fraig_NodeIsVar(pNode) || Fraig_NodeIsMuxType(pNode) ) - if ( (!fFirst && Fraig_Regular(pNode)->nRefs > 1) || - Fraig_IsComplement(pNode) || Fraig_NodeIsVar(pNode) || - (fStopAtMux && Fraig_NodeIsMuxType(pNode)) ) - { - Fraig_NodeVecPushUnique( vSuper, pNode ); - return; - } - // go through the branches - Fraig_CollectSupergate_rec( pNode->p1, vSuper, 0, fStopAtMux ); - Fraig_CollectSupergate_rec( pNode->p2, vSuper, 0, fStopAtMux ); -} - -/**Function************************************************************* - - Synopsis [Returns the array of nodes to be combined into one multi-input AND-gate.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_CollectSupergate( Fraig_Node_t * pNode, int fStopAtMux ) -{ - Fraig_NodeVec_t * vSuper; - vSuper = Fraig_NodeVecAlloc( 8 ); - Fraig_CollectSupergate_rec( pNode, vSuper, 1, fStopAtMux ); - return vSuper; -} - - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_ManIncrementTravId( Fraig_Man_t * pMan ) -{ - pMan->nTravIds2++; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeSetTravIdCurrent( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - pNode->TravId2 = pMan->nTravIds2; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsTravIdCurrent( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - return pNode->TravId2 == pMan->nTravIds2; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeIsTravIdPrevious( Fraig_Man_t * pMan, Fraig_Node_t * pNode ) -{ - return pNode->TravId2 == pMan->nTravIds2 - 1; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/fraigVec.c b/src/sat/fraig/fraigVec.c deleted file mode 100644 index 25d50bf3..00000000 --- a/src/sat/fraig/fraigVec.c +++ /dev/null @@ -1,550 +0,0 @@ -/**CFile**************************************************************** - - FileName [fraigVec.c] - - PackageName [FRAIG: Functionally reduced AND-INV graphs.] - - Synopsis [Vector of FRAIG nodes.] - - Author [Alan Mishchenko <alanmi@eecs.berkeley.edu>] - - Affiliation [UC Berkeley] - - Date [Ver. 2.0. Started - October 1, 2004] - - Revision [$Id: fraigVec.c,v 1.7 2005/07/08 01:01:34 alanmi Exp $] - -***********************************************************************/ - -#include "fraigInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Allocates a vector with the given capacity.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_NodeVecAlloc( int nCap ) -{ - Fraig_NodeVec_t * p; - p = ABC_ALLOC( Fraig_NodeVec_t, 1 ); - if ( nCap > 0 && nCap < 8 ) - nCap = 8; - p->nSize = 0; - p->nCap = nCap; - p->pArray = p->nCap? ABC_ALLOC( Fraig_Node_t *, p->nCap ) : NULL; - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecFree( Fraig_NodeVec_t * p ) -{ - ABC_FREE( p->pArray ); - ABC_FREE( p ); -} - -/**Function************************************************************* - - Synopsis [Duplicates the integer array.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_NodeVec_t * Fraig_NodeVecDup( Fraig_NodeVec_t * pVec ) -{ - Fraig_NodeVec_t * p; - p = ABC_ALLOC( Fraig_NodeVec_t, 1 ); - p->nSize = pVec->nSize; - p->nCap = pVec->nCap; - p->pArray = p->nCap? ABC_ALLOC( Fraig_Node_t *, p->nCap ) : NULL; - memcpy( p->pArray, pVec->pArray, sizeof(Fraig_Node_t *) * pVec->nSize ); - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t ** Fraig_NodeVecReadArray( Fraig_NodeVec_t * p ) -{ - return p->pArray; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecReadSize( Fraig_NodeVec_t * p ) -{ - return p->nSize; -} - -/**Function************************************************************* - - Synopsis [Resizes the vector to the given capacity.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecGrow( Fraig_NodeVec_t * p, int nCapMin ) -{ - if ( p->nCap >= nCapMin ) - return; - p->pArray = ABC_REALLOC( Fraig_Node_t *, p->pArray, nCapMin ); - p->nCap = nCapMin; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecShrink( Fraig_NodeVec_t * p, int nSizeNew ) -{ - assert( p->nSize >= nSizeNew ); - p->nSize = nSizeNew; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecClear( Fraig_NodeVec_t * p ) -{ - p->nSize = 0; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecPush( Fraig_NodeVec_t * p, Fraig_Node_t * Entry ) -{ - if ( p->nSize == p->nCap ) - { - if ( p->nCap < 16 ) - Fraig_NodeVecGrow( p, 16 ); - else - Fraig_NodeVecGrow( p, 2 * p->nCap ); - } - p->pArray[p->nSize++] = Entry; -} - -/**Function************************************************************* - - Synopsis [Add the element while ensuring uniqueness.] - - Description [Returns 1 if the element was found, and 0 if it was new. ] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecPushUnique( Fraig_NodeVec_t * p, Fraig_Node_t * Entry ) -{ - int i; - for ( i = 0; i < p->nSize; i++ ) - if ( p->pArray[i] == Entry ) - return 1; - Fraig_NodeVecPush( p, Entry ); - return 0; -} - -/**Function************************************************************* - - Synopsis [Inserts a new node in the order by arrival times.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecPushOrder( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNode1, * pNode2; - int i; - Fraig_NodeVecPush( p, pNode ); - // find the p of the node - for ( i = p->nSize-1; i > 0; i-- ) - { - pNode1 = p->pArray[i ]; - pNode2 = p->pArray[i-1]; - if ( pNode1 >= pNode2 ) - break; - p->pArray[i ] = pNode2; - p->pArray[i-1] = pNode1; - } -} - -/**Function************************************************************* - - Synopsis [Add the element while ensuring uniqueness in the order.] - - Description [Returns 1 if the element was found, and 0 if it was new. ] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecPushUniqueOrder( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ) -{ - int i; - for ( i = 0; i < p->nSize; i++ ) - if ( p->pArray[i] == pNode ) - return 1; - Fraig_NodeVecPushOrder( p, pNode ); - return 0; -} - -/**Function************************************************************* - - Synopsis [Inserts a new node in the order by arrival times.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecPushOrderByLevel( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ) -{ - Fraig_Node_t * pNode1, * pNode2; - int i; - Fraig_NodeVecPush( p, pNode ); - // find the p of the node - for ( i = p->nSize-1; i > 0; i-- ) - { - pNode1 = p->pArray[i ]; - pNode2 = p->pArray[i-1]; - if ( Fraig_Regular(pNode1)->Level <= Fraig_Regular(pNode2)->Level ) - break; - p->pArray[i ] = pNode2; - p->pArray[i-1] = pNode1; - } -} - -/**Function************************************************************* - - Synopsis [Add the element while ensuring uniqueness in the order.] - - Description [Returns 1 if the element was found, and 0 if it was new. ] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecPushUniqueOrderByLevel( Fraig_NodeVec_t * p, Fraig_Node_t * pNode ) -{ - int i; - for ( i = 0; i < p->nSize; i++ ) - if ( p->pArray[i] == pNode ) - return 1; - Fraig_NodeVecPushOrderByLevel( p, pNode ); - return 0; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeVecPop( Fraig_NodeVec_t * p ) -{ - return p->pArray[--p->nSize]; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecRemove( Fraig_NodeVec_t * p, Fraig_Node_t * Entry ) -{ - int i; - for ( i = 0; i < p->nSize; i++ ) - if ( p->pArray[i] == Entry ) - break; - assert( i < p->nSize ); - for ( i++; i < p->nSize; i++ ) - p->pArray[i-1] = p->pArray[i]; - p->nSize--; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecWriteEntry( Fraig_NodeVec_t * p, int i, Fraig_Node_t * Entry ) -{ - assert( i >= 0 && i < p->nSize ); - p->pArray[i] = Entry; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Fraig_Node_t * Fraig_NodeVecReadEntry( Fraig_NodeVec_t * p, int i ) -{ - assert( i >= 0 && i < p->nSize ); - return p->pArray[i]; -} - -/**Function************************************************************* - - Synopsis [Comparison procedure for two clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecCompareLevelsIncreasing( Fraig_Node_t ** pp1, Fraig_Node_t ** pp2 ) -{ - int Level1 = Fraig_Regular(*pp1)->Level; - int Level2 = Fraig_Regular(*pp2)->Level; - if ( Level1 < Level2 ) - return -1; - if ( Level1 > Level2 ) - return 1; - return 0; -} - -/**Function************************************************************* - - Synopsis [Comparison procedure for two clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecCompareLevelsDecreasing( Fraig_Node_t ** pp1, Fraig_Node_t ** pp2 ) -{ - int Level1 = Fraig_Regular(*pp1)->Level; - int Level2 = Fraig_Regular(*pp2)->Level; - if ( Level1 > Level2 ) - return -1; - if ( Level1 < Level2 ) - return 1; - return 0; -} - -/**Function************************************************************* - - Synopsis [Comparison procedure for two clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecCompareNumbers( Fraig_Node_t ** pp1, Fraig_Node_t ** pp2 ) -{ - int Num1 = Fraig_Regular(*pp1)->Num; - int Num2 = Fraig_Regular(*pp2)->Num; - if ( Num1 < Num2 ) - return -1; - if ( Num1 > Num2 ) - return 1; - return 0; -} - -/**Function************************************************************* - - Synopsis [Comparison procedure for two clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Fraig_NodeVecCompareRefCounts( Fraig_Node_t ** pp1, Fraig_Node_t ** pp2 ) -{ - int nRefs1 = Fraig_Regular(*pp1)->nRefs; - int nRefs2 = Fraig_Regular(*pp2)->nRefs; - - if ( nRefs1 < nRefs2 ) - return -1; - if ( nRefs1 > nRefs2 ) - return 1; - - nRefs1 = Fraig_Regular(*pp1)->Level; - nRefs2 = Fraig_Regular(*pp2)->Level; - - if ( nRefs1 < nRefs2 ) - return -1; - if ( nRefs1 > nRefs2 ) - return 1; - return 0; -} - -/**Function************************************************************* - - Synopsis [Sorting the entries by their integer value.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecSortByLevel( Fraig_NodeVec_t * p, int fIncreasing ) -{ - if ( fIncreasing ) - qsort( (void *)p->pArray, p->nSize, sizeof(Fraig_Node_t *), - (int (*)(const void *, const void *)) Fraig_NodeVecCompareLevelsIncreasing ); - else - qsort( (void *)p->pArray, p->nSize, sizeof(Fraig_Node_t *), - (int (*)(const void *, const void *)) Fraig_NodeVecCompareLevelsDecreasing ); -} - -/**Function************************************************************* - - Synopsis [Sorting the entries by their integer value.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecSortByNumber( Fraig_NodeVec_t * p ) -{ - qsort( (void *)p->pArray, p->nSize, sizeof(Fraig_Node_t *), - (int (*)(const void *, const void *)) Fraig_NodeVecCompareNumbers ); -} - -/**Function************************************************************* - - Synopsis [Sorting the entries by their integer value.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Fraig_NodeVecSortByRefCount( Fraig_NodeVec_t * p ) -{ - qsort( (void *)p->pArray, p->nSize, sizeof(Fraig_Node_t *), - (int (*)(const void *, const void *)) Fraig_NodeVecCompareRefCounts ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/fraig/module.make b/src/sat/fraig/module.make deleted file mode 100644 index cc6eb9d3..00000000 --- a/src/sat/fraig/module.make +++ /dev/null @@ -1,12 +0,0 @@ -SRC += src/sat/fraig/fraigApi.c \ - src/sat/fraig/fraigCanon.c \ - src/sat/fraig/fraigFanout.c \ - src/sat/fraig/fraigFeed.c \ - src/sat/fraig/fraigMan.c \ - src/sat/fraig/fraigMem.c \ - src/sat/fraig/fraigNode.c \ - src/sat/fraig/fraigPrime.c \ - src/sat/fraig/fraigSat.c \ - src/sat/fraig/fraigTable.c \ - src/sat/fraig/fraigUtil.c \ - src/sat/fraig/fraigVec.c diff --git a/src/sat/lsat/solver.h b/src/sat/lsat/solver.h index a50c4abe..2baff658 100644 --- a/src/sat/lsat/solver.h +++ b/src/sat/lsat/solver.h @@ -18,8 +18,8 @@ DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. **************************************************************************************************/ -#ifndef Minisat_solver_h -#define Minisat_solver_h +#ifndef ABC__sat__lsat__solver_h +#define ABC__sat__lsat__solver_h ABC_NAMESPACE_HEADER_START diff --git a/src/sat/msat/msat.h b/src/sat/msat/msat.h index 6dc68cf8..4830b12e 100644 --- a/src/sat/msat/msat.h +++ b/src/sat/msat/msat.h @@ -18,8 +18,8 @@ ***********************************************************************/ -#ifndef __MSAT_H__ -#define __MSAT_H__ +#ifndef ABC__sat__msat__msat_h +#define ABC__sat__msat__msat_h //////////////////////////////////////////////////////////////////////// diff --git a/src/sat/msat/msatInt.h b/src/sat/msat/msatInt.h index b4b5ff77..58baa7b4 100644 --- a/src/sat/msat/msatInt.h +++ b/src/sat/msat/msatInt.h @@ -18,8 +18,8 @@ ***********************************************************************/ -#ifndef __MSAT_INT_H__ -#define __MSAT_INT_H__ +#ifndef ABC__sat__msat__msatInt_h +#define ABC__sat__msat__msatInt_h //////////////////////////////////////////////////////////////////////// @@ -33,7 +33,7 @@ #include <time.h> #include <math.h> -#include "abc_global.h" +#include "src/misc/util/abc_global.h" #include "msat.h" ABC_NAMESPACE_HEADER_START diff --git a/src/sat/pdr/module.make b/src/sat/pdr/module.make deleted file mode 100644 index 5cf4491c..00000000 --- a/src/sat/pdr/module.make +++ /dev/null @@ -1,8 +0,0 @@ -SRC += src/sat/pdr/pdr.c \ - src/sat/pdr/pdrCnf.c \ - src/sat/pdr/pdrCore.c \ - src/sat/pdr/pdrInv.c \ - src/sat/pdr/pdrMan.c \ - src/sat/pdr/pdrSat.c \ - src/sat/pdr/pdrTsim.c \ - src/sat/pdr/pdrUtil.c diff --git a/src/sat/pdr/pdr.h b/src/sat/pdr/pdr.h deleted file mode 100644 index 03854509..00000000 --- a/src/sat/pdr/pdr.h +++ /dev/null @@ -1,79 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdr.h] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [External declarations.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdr.h,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#ifndef __PDR_H__ -#define __PDR_H__ - - -ABC_NAMESPACE_HEADER_START - - -//////////////////////////////////////////////////////////////////////// -/// INCLUDES /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// PARAMETERS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// BASIC TYPES /// -//////////////////////////////////////////////////////////////////////// - -typedef struct Pdr_Par_t_ Pdr_Par_t; -struct Pdr_Par_t_ -{ - int iOutput; // zero-based number of primary output to solve - int nRecycle; // limit on vars for recycling - int nFrameMax; // limit on frame count - int nConfLimit; // limit on SAT solver conflicts - int nTimeOut; // timeout in seconds - int fTwoRounds; // use two rounds for generalization - int fMonoCnf; // monolythic CNF - int fDumpInv; // dump inductive invariant - int fShortest; // forces bug traces to be shortest - int fSkipGeneral; // skips expensive generalization step - int fVerbose; // verbose output - int fVeryVerbose; // very verbose output - int iFrame; // explored up to this frame -}; - -//////////////////////////////////////////////////////////////////////// -/// MACRO DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -/*=== pdrCore.c ==========================================================*/ -extern void Pdr_ManSetDefaultParams( Pdr_Par_t * pPars ); -extern int Pdr_ManSolve( Aig_Man_t * p, Pdr_Par_t * pPars, Abc_Cex_t ** ppCex ); - - -ABC_NAMESPACE_HEADER_END - - -#endif - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - diff --git a/src/sat/pdr/pdrClass.c b/src/sat/pdr/pdrClass.c deleted file mode 100644 index 3e990958..00000000 --- a/src/sat/pdr/pdrClass.c +++ /dev/null @@ -1,223 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrClass.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Equivalence classes of register outputs.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrClass.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Performs duplication with the variable map.] - - Description [Var map contains -1 if const0 and <reg_num> otherwise.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Aig_Man_t * Pdr_ManRehashWithMap( Aig_Man_t * pAig, Vec_Int_t * vMap ) -{ - Aig_Man_t * pFrames; - Aig_Obj_t * pObj; - int i, iReg; - assert( Vec_IntSize(vMap) == Aig_ManRegNum(pAig) ); - // start the fraig package - pFrames = Aig_ManStart( Aig_ManObjNumMax(pAig) ); - pFrames->pName = Aig_UtilStrsav( pAig->pName ); - pFrames->pSpec = Aig_UtilStrsav( pAig->pSpec ); - // create CI mapping - Aig_ManCleanData( pAig ); - Aig_ManConst1(pAig)->pData = Aig_ManConst1(pFrames); - Aig_ManForEachPi( pAig, pObj, i ) - pObj->pData = Aig_ObjCreatePi(pFrames); - Saig_ManForEachLo( pAig, pObj, i ) - { - iReg = Vec_IntEntry(vMap, i); - if ( iReg == -1 ) - pObj->pData = Aig_ManConst0(pFrames); - else - pObj->pData = Saig_ManLo(pAig, iReg)->pData; - } - // add internal nodes of this frame - Aig_ManForEachNode( pAig, pObj, i ) - pObj->pData = Aig_And( pFrames, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) ); - // add output nodes - Aig_ManForEachPo( pAig, pObj, i ) - pObj->pData = Aig_ObjCreatePo( pFrames, Aig_ObjChild0Copy(pObj) ); - // finish off - Aig_ManCleanup( pFrames ); - Aig_ManSetRegNum( pFrames, Aig_ManRegNum(pAig) ); - return pFrames; -} - -/**Function************************************************************* - - Synopsis [Creates mapping of registers.] - - Description [Var map contains -1 if const0 and <reg_num> otherwise.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Int_t * Pdr_ManCreateMap( Aig_Man_t * p ) -{ - Aig_Obj_t * pObj; - Vec_Int_t * vMap; - int * pLit2Id, Lit, i; - pLit2Id = ABC_ALLOC( int, Aig_ManObjNumMax(p) * 2 ); - for ( i = 0; i < Aig_ManObjNumMax(p) * 2; i++ ) - pLit2Id[i] = -1; - vMap = Vec_IntAlloc( Aig_ManRegNum(p) ); - Saig_ManForEachLi( p, pObj, i ) - { - if ( Aig_ObjChild0(pObj) == Aig_ManConst0(p) ) - { - Vec_IntPush( vMap, -1 ); - continue; - } - Lit = 2 * Aig_ObjFaninId0(pObj) + Aig_ObjFaninC0(pObj); - if ( pLit2Id[Lit] < 0 ) // the first time - pLit2Id[Lit] = i; - Vec_IntPush( vMap, pLit2Id[Lit] ); - } - ABC_FREE( pLit2Id ); - return vMap; -} - -/**Function************************************************************* - - Synopsis [Counts reduced registers.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManCountMap( Vec_Int_t * vMap ) -{ - int i, Entry, Counter = 0; - Vec_IntForEachEntry( vMap, Entry, i ) - if ( Entry != i ) - Counter++; - return Counter; -} - -/**Function************************************************************* - - Synopsis [Counts reduced registers.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManPrintMap( Vec_Int_t * vMap ) -{ - Vec_Int_t * vMarks; - int f, i, iClass, Entry, Counter = 0; - printf( " Consts: " ); - Vec_IntForEachEntry( vMap, Entry, i ) - if ( Entry == -1 ) - printf( "%d ", i ); - printf( "\n" ); - vMarks = Vec_IntAlloc( 100 ); - Vec_IntForEachEntry( vMap, iClass, f ) - { - if ( iClass == -1 ) - continue; - if ( iClass == f ) - continue; - // check previous classes - if ( Vec_IntFind( vMarks, iClass ) >= 0 ) - continue; - Vec_IntPush( vMarks, iClass ); - // print class - printf( " Class %d : ", iClass ); - Vec_IntForEachEntry( vMap, Entry, i ) - if ( Entry == iClass ) - printf( "%d ", i ); - printf( "\n" ); - } - Vec_IntFree( vMarks ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManEquivClasses( Aig_Man_t * pAig ) -{ - Vec_Int_t * vMap; - Aig_Man_t * pTemp; - int f, nFrames = 100; - assert( Saig_ManRegNum(pAig) > 0 ); - // start the map - vMap = Vec_IntAlloc( 0 ); - Vec_IntFill( vMap, Aig_ManRegNum(pAig), -1 ); - // iterate and print changes - for ( f = 0; f < nFrames; f++ ) - { - // implement variable map - pTemp = Pdr_ManRehashWithMap( pAig, vMap ); - // report the result - printf( "F =%4d : Total = %6d. Nodes = %6d. RedRegs = %6d. Prop = %s\n", - f+1, Aig_ManNodeNum(pAig), Aig_ManNodeNum(pTemp), Pdr_ManCountMap(vMap), - Aig_ObjChild0(Aig_ManPo(pTemp,0)) == Aig_ManConst0(pTemp) ? "proof" : "unknown" ); - // recreate the map - Pdr_ManPrintMap( vMap ); - Vec_IntFree( vMap ); - vMap = Pdr_ManCreateMap( pTemp ); - Aig_ManStop( pTemp ); - if ( Pdr_ManCountMap(vMap) == 0 ) - break; - } - Vec_IntFree( vMap ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrCnf.c b/src/sat/pdr/pdrCnf.c deleted file mode 100644 index fddd292b..00000000 --- a/src/sat/pdr/pdrCnf.c +++ /dev/null @@ -1,357 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrCnf.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [CNF computation on demand.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrCnf.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -/* - The CNF (p->pCnf2) is expressed in terms of object IDs. - Each node in the CNF is marked if it has clauses (p->pCnf2->pObj2Count[Id] > 0). - Each node in the CNF has the first clause (p->pCnf2->pObj2Clause) - and the number of clauses (p->pCnf2->pObj2Count). - Each node used in a CNF of any timeframe has its SAT var recorded. - Each frame has a reserve mapping of SAT variables into ObjIds. -*/ - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Returns SAT variable of the given object.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline int Pdr_ObjSatVar1( Pdr_Man_t * p, int k, Aig_Obj_t * pObj ) -{ - return p->pCnf1->pVarNums[ Aig_ObjId(pObj) ]; -} - -/**Function************************************************************* - - Synopsis [Returns SAT variable of the given object.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline int Pdr_ObjSatVar2FindOrAdd( Pdr_Man_t * p, int k, Aig_Obj_t * pObj ) -{ - assert( p->pCnf2->pObj2Count[Aig_ObjId(pObj)] >= 0 ); - if ( p->pvId2Vars[Aig_ObjId(pObj)] == NULL ) - p->pvId2Vars[Aig_ObjId(pObj)] = Vec_IntStart( 16 ); - if ( Vec_IntGetEntry( p->pvId2Vars[Aig_ObjId(pObj)], k ) == 0 ) - { - sat_solver * pSat = Pdr_ManSolver(p, k); - Vec_Int_t * vVar2Ids = (Vec_Int_t *)Vec_PtrEntry(p->vVar2Ids, k); - int iVarNew = Vec_IntSize( vVar2Ids ); - assert( iVarNew > 0 ); - Vec_IntPush( vVar2Ids, Aig_ObjId(pObj) ); - Vec_IntWriteEntry( p->pvId2Vars[Aig_ObjId(pObj)], k, iVarNew ); - sat_solver_setnvars( pSat, iVarNew + 1 ); - if ( k == 0 && Saig_ObjIsLo(p->pAig, pObj) ) // initialize the register output - { - int Lit = toLitCond( iVarNew, 1 ); - int RetValue = sat_solver_addclause( pSat, &Lit, &Lit + 1 ); - assert( RetValue == 1 ); - sat_solver_compress( pSat ); - } - } - return Vec_IntEntry( p->pvId2Vars[Aig_ObjId(pObj)], k ); -} - -/**Function************************************************************* - - Synopsis [Recursively adds CNF for the given object.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ObjSatVar2( Pdr_Man_t * p, int k, Aig_Obj_t * pObj ) -{ - sat_solver * pSat; - Vec_Int_t * vLits; - Vec_Int_t * vVar2Ids = (Vec_Int_t *)Vec_PtrEntry(p->vVar2Ids, k); - int nVarCount = Vec_IntSize(vVar2Ids); - int iVarThis = Pdr_ObjSatVar2FindOrAdd( p, k, pObj ); - int * pLit, i, iVar, nClauses, iFirstClause, RetValue; - if ( nVarCount == Vec_IntSize(vVar2Ids) ) - return iVarThis; - assert( nVarCount + 1 == Vec_IntSize(vVar2Ids) ); - if ( Aig_ObjIsPi(pObj) ) - return iVarThis; - nClauses = p->pCnf2->pObj2Count[Aig_ObjId(pObj)]; - iFirstClause = p->pCnf2->pObj2Clause[Aig_ObjId(pObj)]; - assert( nClauses > 0 ); - pSat = Pdr_ManSolver(p, k); - vLits = Vec_IntAlloc( 16 ); - for ( i = iFirstClause; i < iFirstClause + nClauses; i++ ) - { - Vec_IntClear( vLits ); - for ( pLit = p->pCnf2->pClauses[i]; pLit < p->pCnf2->pClauses[i+1]; pLit++ ) - { - iVar = Pdr_ObjSatVar2( p, k, Aig_ManObj(p->pAig, lit_var(*pLit)) ); - Vec_IntPush( vLits, toLitCond( iVar, lit_sign(*pLit) ) ); - } - RetValue = sat_solver_addclause( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits)+Vec_IntSize(vLits) ); - assert( RetValue ); - } - Vec_IntFree( vLits ); - return iVarThis; -} - -/**Function************************************************************* - - Synopsis [Returns SAT variable of the given object.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ObjSatVar( Pdr_Man_t * p, int k, Aig_Obj_t * pObj ) -{ - if ( p->pPars->fMonoCnf ) - return Pdr_ObjSatVar1( p, k, pObj ); - else - return Pdr_ObjSatVar2( p, k, pObj ); -} - - -/**Function************************************************************* - - Synopsis [Returns register number for the given SAT variable.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline int Pdr_ObjRegNum1( Pdr_Man_t * p, int k, int iSatVar ) -{ - int RegId; - assert( iSatVar >= 0 ); - // consider the case of auxiliary variable - if ( iSatVar >= p->pCnf1->nVars ) - return -1; - // consider the case of register output - RegId = Vec_IntEntry( p->vVar2Reg, iSatVar ); - assert( RegId >= 0 && RegId < Aig_ManRegNum(p->pAig) ); - return RegId; -} - -/**Function************************************************************* - - Synopsis [Returns register number for the given SAT variable.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline int Pdr_ObjRegNum2( Pdr_Man_t * p, int k, int iSatVar ) -{ - Aig_Obj_t * pObj; - int ObjId; - Vec_Int_t * vVar2Ids = (Vec_Int_t *)Vec_PtrEntry(p->vVar2Ids, k); - assert( iSatVar > 0 && iSatVar < Vec_IntSize(vVar2Ids) ); - ObjId = Vec_IntEntry( vVar2Ids, iSatVar ); - if ( ObjId == -1 ) // activation variable - return -1; - pObj = Aig_ManObj( p->pAig, ObjId ); - if ( Saig_ObjIsLi( p->pAig, pObj ) ) - return Aig_ObjPioNum(pObj)-Saig_ManPoNum(p->pAig); - assert( 0 ); // should be called for register inputs only - return -1; -} - -/**Function************************************************************* - - Synopsis [Returns register number for the given SAT variable.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ObjRegNum( Pdr_Man_t * p, int k, int iSatVar ) -{ - if ( p->pPars->fMonoCnf ) - return Pdr_ObjRegNum1( p, k, iSatVar ); - else - return Pdr_ObjRegNum2( p, k, iSatVar ); -} - - -/**Function************************************************************* - - Synopsis [Returns the index of unused SAT variable.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManFreeVar( Pdr_Man_t * p, int k ) -{ - if ( p->pPars->fMonoCnf ) - return sat_solver_nvars( Pdr_ManSolver(p, k) ); - else - { - Vec_Int_t * vVar2Ids = (Vec_Int_t *)Vec_PtrEntry( p->vVar2Ids, k ); - Vec_IntPush( vVar2Ids, -1 ); - return Vec_IntSize( vVar2Ids ) - 1; - } -} - -/**Function************************************************************* - - Synopsis [Creates SAT solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline sat_solver * Pdr_ManNewSolver1( sat_solver * pSat, Pdr_Man_t * p, int k, int fInit ) -{ - Aig_Obj_t * pObj; - int i; - assert( pSat ); - if ( p->pCnf1 == NULL ) - { - int nRegs = p->pAig->nRegs; - p->pAig->nRegs = Aig_ManPoNum(p->pAig); - p->pCnf1 = Cnf_Derive( p->pAig, Aig_ManPoNum(p->pAig) ); - p->pAig->nRegs = nRegs; - assert( p->vVar2Reg == NULL ); - p->vVar2Reg = Vec_IntStartFull( p->pCnf1->nVars ); - Saig_ManForEachLi( p->pAig, pObj, i ) - Vec_IntWriteEntry( p->vVar2Reg, Pdr_ObjSatVar(p, k, pObj), i ); - } - pSat = (sat_solver *)Cnf_DataWriteIntoSolverInt( pSat, p->pCnf1, 1, fInit ); - sat_solver_set_runtime_limit( pSat, p->timeToStop ); - return pSat; -} - -/**Function************************************************************* - - Synopsis [Creates SAT solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline sat_solver * Pdr_ManNewSolver2( sat_solver * pSat, Pdr_Man_t * p, int k, int fInit ) -{ - Vec_Int_t * vVar2Ids; - int i, Entry; - assert( pSat ); - if ( p->pCnf2 == NULL ) - { - p->pCnf2 = Cnf_DeriveOther( p->pAig ); - p->pvId2Vars = ABC_CALLOC( Vec_Int_t *, Aig_ManObjNumMax(p->pAig) ); - p->vVar2Ids = Vec_PtrAlloc( 256 ); - } - // update the variable mapping - vVar2Ids = (Vec_Int_t *)Vec_PtrGetEntry( p->vVar2Ids, k ); - if ( vVar2Ids == NULL ) - { - vVar2Ids = Vec_IntAlloc( 500 ); - Vec_PtrWriteEntry( p->vVar2Ids, k, vVar2Ids ); - } - Vec_IntForEachEntry( vVar2Ids, Entry, i ) - { - if ( Entry == -1 ) - continue; - assert( Vec_IntEntry( p->pvId2Vars[Entry], k ) > 0 ); - Vec_IntWriteEntry( p->pvId2Vars[Entry], k, 0 ); - } - Vec_IntClear( vVar2Ids ); - Vec_IntPush( vVar2Ids, -1 ); - // start the SAT solver -// pSat = sat_solver_new(); - sat_solver_setnvars( pSat, 500 ); - sat_solver_set_runtime_limit( pSat, p->timeToStop ); - return pSat; -} - -/**Function************************************************************* - - Synopsis [Creates SAT solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -sat_solver * Pdr_ManNewSolver( sat_solver * pSat, Pdr_Man_t * p, int k, int fInit ) -{ - assert( pSat != NULL ); - if ( p->pPars->fMonoCnf ) - return Pdr_ManNewSolver1( pSat, p, k, fInit ); - else - return Pdr_ManNewSolver2( pSat, p, k, fInit ); -} - - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrCore.c b/src/sat/pdr/pdrCore.c deleted file mode 100644 index 025ada06..00000000 --- a/src/sat/pdr/pdrCore.c +++ /dev/null @@ -1,722 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrCore.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Core procedures.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrCore.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Returns 1 if the state could be blocked.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManSetDefaultParams( Pdr_Par_t * pPars ) -{ - memset( pPars, 0, sizeof(Pdr_Par_t) ); - pPars->iOutput = -1; // zero-based output number - pPars->nRecycle = 300; // limit on vars for recycling - pPars->nFrameMax = 5000; // limit on number of timeframes - pPars->nTimeOut = 0; // timeout in seconds - pPars->nConfLimit = 100000; // limit on SAT solver conflicts - pPars->fTwoRounds = 0; // use two rounds for generalization - pPars->fMonoCnf = 0; // monolythic CNF - pPars->fDumpInv = 0; // dump inductive invariant - pPars->fShortest = 0; // forces bug traces to be shortest - pPars->fVerbose = 0; // verbose output - pPars->fVeryVerbose = 0; // very verbose output - pPars->iFrame = -1; // explored up to this frame -} - -/**Function************************************************************* - - Synopsis [Reduces clause using analyzeFinal.] - - Description [Assumes that the SAT solver just terminated an UNSAT call.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_ManReduceClause( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ) -{ - Pdr_Set_t * pCubeMin; - Vec_Int_t * vLits; - int i, Entry, nCoreLits, * pCoreLits; - // get relevant SAT literals - nCoreLits = sat_solver_final(Pdr_ManSolver(p, k), &pCoreLits); - // translate them into register literals and remove auxiliary - vLits = Pdr_ManLitsToCube( p, k, pCoreLits, nCoreLits ); - // skip if there is no improvement - if ( Vec_IntSize(vLits) == pCube->nLits ) - return NULL; - assert( Vec_IntSize(vLits) < pCube->nLits ); - // if the cube overlaps with init, add any literal - Vec_IntForEachEntry( vLits, Entry, i ) - if ( lit_sign(Entry) == 0 ) // positive literal - break; - if ( i == Vec_IntSize(vLits) ) // only negative literals - { - // add the first positive literal - for ( i = 0; i < pCube->nLits; i++ ) - if ( lit_sign(pCube->Lits[i]) == 0 ) // positive literal - { - Vec_IntPush( vLits, pCube->Lits[i] ); - break; - } - assert( i < pCube->nLits ); - } - // generate a starting cube - pCubeMin = Pdr_SetCreateSubset( pCube, Vec_IntArray(vLits), Vec_IntSize(vLits) ); - assert( !Pdr_SetIsInit(pCubeMin, -1) ); -/* - // make sure the cube works - { - int RetValue; - RetValue = Pdr_ManCheckCube( p, k, pCubeMin, NULL, 0 ); - assert( RetValue ); - } -*/ - return pCubeMin; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the state could be blocked.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManPushClauses( Pdr_Man_t * p ) -{ - Pdr_Set_t * pTemp, * pCubeK, * pCubeK1; - Vec_Ptr_t * vArrayK, * vArrayK1; - int i, j, k, m, RetValue = 0, RetValue2, kMax = Vec_PtrSize(p->vSolvers)-1; - int Counter = 0; - int clk = clock(); - Vec_VecForEachLevelStartStop( p->vClauses, vArrayK, k, 1, kMax ) - { - Vec_PtrSort( vArrayK, (int (*)(void))Pdr_SetCompare ); - vArrayK1 = Vec_VecEntry( p->vClauses, k+1 ); - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK, pCubeK, j ) - { - Counter++; - - // remove cubes in the same frame that are contained by pCubeK - Vec_PtrForEachEntryStart( Pdr_Set_t *, vArrayK, pTemp, m, j+1 ) - { - if ( !Pdr_SetContains( pTemp, pCubeK ) ) // pCubeK contains pTemp - continue; - Pdr_SetDeref( pTemp ); - Vec_PtrWriteEntry( vArrayK, m, Vec_PtrEntryLast(vArrayK) ); - Vec_PtrPop(vArrayK); - m--; - } - - // check if the clause can be moved to the next frame - RetValue2 = Pdr_ManCheckCube( p, k, pCubeK, NULL, 0 ); - if ( RetValue2 == -1 ) - return -1; - if ( !RetValue2 ) - continue; - - { - Pdr_Set_t * pCubeMin; - pCubeMin = Pdr_ManReduceClause( p, k, pCubeK ); - if ( pCubeMin != NULL ) - { -// printf( "%d ", pCubeK->nLits - pCubeMin->nLits ); - Pdr_SetDeref( pCubeK ); - pCubeK = pCubeMin; - } - } - - // if it can be moved, add it to the next frame - Pdr_ManSolverAddClause( p, k+1, pCubeK ); - // check if the clause subsumes others - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK1, pCubeK1, i ) - { - if ( !Pdr_SetContains( pCubeK1, pCubeK ) ) // pCubeK contains pCubeK1 - continue; - Pdr_SetDeref( pCubeK1 ); - Vec_PtrWriteEntry( vArrayK1, i, Vec_PtrEntryLast(vArrayK1) ); - Vec_PtrPop(vArrayK1); - i--; - } - // add the last clause - Vec_PtrPush( vArrayK1, pCubeK ); - Vec_PtrWriteEntry( vArrayK, j, Vec_PtrEntryLast(vArrayK) ); - Vec_PtrPop(vArrayK); - j--; - } - if ( Vec_PtrSize(vArrayK) == 0 ) - RetValue = 1; - } - - // clean up the last one - vArrayK = Vec_VecEntry( p->vClauses, kMax ); - Vec_PtrSort( vArrayK, (int (*)(void))Pdr_SetCompare ); - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK, pCubeK, j ) - { - // remove cubes in the same frame that are contained by pCubeK - Vec_PtrForEachEntryStart( Pdr_Set_t *, vArrayK, pTemp, m, j+1 ) - { - if ( !Pdr_SetContains( pTemp, pCubeK ) ) // pCubeK contains pTemp - continue; -/* - printf( "===\n" ); - Pdr_SetPrint( stdout, pCubeK, Aig_ManRegNum(p->pAig), NULL ); - printf( "\n" ); - Pdr_SetPrint( stdout, pTemp, Aig_ManRegNum(p->pAig), NULL ); - printf( "\n" ); -*/ - Pdr_SetDeref( pTemp ); - Vec_PtrWriteEntry( vArrayK, m, Vec_PtrEntryLast(vArrayK) ); - Vec_PtrPop(vArrayK); - m--; - } - } - p->tPush += clock() - clk; - return RetValue; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the clause is contained in higher clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManCheckContainment( Pdr_Man_t * p, int k, Pdr_Set_t * pSet ) -{ - Pdr_Set_t * pThis; - Vec_Ptr_t * vArrayK; - int i, j, kMax = Vec_PtrSize(p->vSolvers)-1; - Vec_VecForEachLevelStartStop( p->vClauses, vArrayK, i, k, kMax+1 ) - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK, pThis, j ) - if ( Pdr_SetContains( pSet, pThis ) ) - return 1; - return 0; -} - - -/**Function************************************************************* - - Synopsis [Sorts literals by priority.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int * Pdr_ManSortByPriority( Pdr_Man_t * p, Pdr_Set_t * pCube ) -{ - int * pPrios = Vec_IntArray(p->vPrio); - int * pArray = p->pOrder; - int temp, i, j, best_i, nSize = pCube->nLits; - // initialize variable order - for ( i = 0; i < nSize; i++ ) - pArray[i] = i; - for ( i = 0; i < nSize-1; i++ ) - { - best_i = i; - for ( j = i+1; j < nSize; j++ ) -// if ( pArray[j] < pArray[best_i] ) - if ( pPrios[pCube->Lits[pArray[j]]>>1] < pPrios[pCube->Lits[pArray[best_i]]>>1] ) - best_i = j; - temp = pArray[i]; - pArray[i] = pArray[best_i]; - pArray[best_i] = temp; - } -/* - for ( i = 0; i < pCube->nLits; i++ ) - printf( "%2d : %5d %5d %5d\n", i, pArray[i], pCube->Lits[pArray[i]]>>1, pPrios[pCube->Lits[pArray[i]]>>1] ); - printf( "\n" ); -*/ - return pArray; -} - - -/**Function************************************************************* - - Synopsis [Returns 1 if the state could be blocked.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManGeneralize( Pdr_Man_t * p, int k, Pdr_Set_t * pCube, Pdr_Set_t ** ppPred, Pdr_Set_t ** ppCubeMin ) -{ - Pdr_Set_t * pCubeMin, * pCubeTmp = NULL; - int i, j, n, Lit, RetValue, clk = clock(); - int * pOrder; - // if there is no induction, return - *ppCubeMin = NULL; - RetValue = Pdr_ManCheckCube( p, k, pCube, ppPred, p->pPars->nConfLimit ); - if ( RetValue == -1 ) - return -1; - if ( RetValue == 0 ) - { - p->tGeneral += clock() - clk; - return 0; - } - - // reduce clause using assumptions -// pCubeMin = Pdr_SetDup( pCube ); - pCubeMin = Pdr_ManReduceClause( p, k, pCube ); - if ( pCubeMin == NULL ) - pCubeMin = Pdr_SetDup( pCube ); - - // perform generalization - if ( !p->pPars->fSkipGeneral ) - { - // sort literals by their occurences - pOrder = Pdr_ManSortByPriority( p, pCubeMin ); - // try removing literals - for ( j = 0; j < pCubeMin->nLits; j++ ) - { - // use ordering - // i = j; - i = pOrder[j]; - - // check init state - assert( pCubeMin->Lits[i] != -1 ); - if ( Pdr_SetIsInit(pCubeMin, i) ) - continue; - // try removing this literal - Lit = pCubeMin->Lits[i]; pCubeMin->Lits[i] = -1; - RetValue = Pdr_ManCheckCube( p, k, pCubeMin, NULL, p->pPars->nConfLimit ); - if ( RetValue == -1 ) - { - Pdr_SetDeref( pCubeMin ); - return -1; - } - pCubeMin->Lits[i] = Lit; - if ( RetValue == 0 ) - continue; - - // remove j-th entry - for ( n = j; n < pCubeMin->nLits-1; n++ ) - pOrder[n] = pOrder[n+1]; - j--; - - // success - update the cube - pCubeMin = Pdr_SetCreateFrom( pCubeTmp = pCubeMin, i ); - Pdr_SetDeref( pCubeTmp ); - assert( pCubeMin->nLits > 0 ); - i--; - - // get the ordering by decreasing priorit - pOrder = Pdr_ManSortByPriority( p, pCubeMin ); - } - - if ( p->pPars->fTwoRounds ) - for ( j = 0; j < pCubeMin->nLits; j++ ) - { - // use ordering - // i = j; - i = pOrder[j]; - - // check init state - assert( pCubeMin->Lits[i] != -1 ); - if ( Pdr_SetIsInit(pCubeMin, i) ) - continue; - // try removing this literal - Lit = pCubeMin->Lits[i]; pCubeMin->Lits[i] = -1; - RetValue = Pdr_ManCheckCube( p, k, pCubeMin, NULL, p->pPars->nConfLimit ); - if ( RetValue == -1 ) - { - Pdr_SetDeref( pCubeMin ); - return -1; - } - pCubeMin->Lits[i] = Lit; - if ( RetValue == 0 ) - continue; - - // remove j-th entry - for ( n = j; n < pCubeMin->nLits-1; n++ ) - pOrder[n] = pOrder[n+1]; - j--; - - // success - update the cube - pCubeMin = Pdr_SetCreateFrom( pCubeTmp = pCubeMin, i ); - Pdr_SetDeref( pCubeTmp ); - assert( pCubeMin->nLits > 0 ); - i--; - - // get the ordering by decreasing priorit - pOrder = Pdr_ManSortByPriority( p, pCubeMin ); - } - } - - assert( ppCubeMin != NULL ); - *ppCubeMin = pCubeMin; - p->tGeneral += clock() - clk; - return 1; -} - -/**Function************************************************************* - - Synopsis [Returns 1 if the state could be blocked.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManBlockCube( Pdr_Man_t * p, Pdr_Set_t * pCube ) -{ - Pdr_Obl_t * pThis; - Pdr_Set_t * pPred, * pCubeMin; - int i, k, RetValue, Prio = ABC_INFINITY, Counter = 0; - int kMax = Vec_PtrSize(p->vSolvers)-1, clk; - p->nBlocks++; - // create first proof obligation - assert( p->pQueue == NULL ); - pThis = Pdr_OblStart( kMax, Prio--, pCube, NULL ); // consume ref - Pdr_QueuePush( p, pThis ); - // try to solve it recursively - while ( !Pdr_QueueIsEmpty(p) ) - { - Counter++; - pThis = Pdr_QueueHead( p ); - if ( pThis->iFrame == 0 ) - return 0; // SAT - pThis = Pdr_QueuePop( p ); - assert( pThis->iFrame > 0 ); - assert( !Pdr_SetIsInit(pThis->pState, -1) ); - - clk = clock(); - if ( Pdr_ManCheckContainment( p, pThis->iFrame, pThis->pState ) ) - { - p->tContain += clock() - clk; - Pdr_OblDeref( pThis ); - continue; - } - p->tContain += clock() - clk; - - // check if the cube is already contained - RetValue = Pdr_ManCheckCubeCs( p, pThis->iFrame, pThis->pState ); - if ( RetValue == -1 ) // cube is blocked by clauses in this frame - { - Pdr_OblDeref( pThis ); - return -1; - } - if ( RetValue ) // cube is blocked by clauses in this frame - { - Pdr_OblDeref( pThis ); - continue; - } - - // check if the cube holds with relative induction - pCubeMin = NULL; - RetValue = Pdr_ManGeneralize( p, pThis->iFrame-1, pThis->pState, &pPred, &pCubeMin ); - if ( RetValue == -1 ) - { - Pdr_OblDeref( pThis ); - return -1; - } - if ( RetValue ) // cube is blocked inductively in this frame - { - assert( pCubeMin != NULL ); - - // k is the last frame where pCubeMin holds - k = pThis->iFrame; - - // check other frames - assert( pPred == NULL ); - for ( k = pThis->iFrame; k < kMax; k++ ) - if ( !Pdr_ManCheckCube( p, k, pCubeMin, NULL, 0 ) ) - break; - - // add new clause - if ( p->pPars->fVeryVerbose ) - { - printf( "Adding cube " ); - Pdr_SetPrint( stdout, pCubeMin, Aig_ManRegNum(p->pAig), NULL ); - printf( " to frame %d.\n", k ); - } - // set priority flops - for ( i = 0; i < pCubeMin->nLits; i++ ) - { - assert( pCubeMin->Lits[i] >= 0 ); - assert( (pCubeMin->Lits[i] / 2) < Aig_ManRegNum(p->pAig) ); - Vec_IntAddToEntry( p->vPrio, pCubeMin->Lits[i] / 2, 1 ); - } - - Vec_VecPush( p->vClauses, k, pCubeMin ); // consume ref - p->nCubes++; - // add clause - for ( i = 1; i <= k; i++ ) - Pdr_ManSolverAddClause( p, i, pCubeMin ); - // schedule proof obligation - if ( k < kMax && !p->pPars->fShortest ) - { - pThis->iFrame = k+1; - pThis->prio = Prio--; - Pdr_QueuePush( p, pThis ); - } - else - { - Pdr_OblDeref( pThis ); - } - } - else - { - assert( pCubeMin == NULL ); - assert( pPred != NULL ); - pThis->prio = Prio--; - Pdr_QueuePush( p, pThis ); - - pThis = Pdr_OblStart( pThis->iFrame-1, Prio--, pPred, Pdr_OblRef(pThis) ); - Pdr_QueuePush( p, pThis ); - } - - // check the timeout - if ( p->timeToStop && time(NULL) > p->timeToStop ) - return -1; - } - return 1; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManSolveInt( Pdr_Man_t * p ) -{ - int fPrintClauses = 0; - Pdr_Set_t * pCube; - int k, RetValue = -1; - int clkTotal = clock(); - int clkStart = clock(); - p->timeToStop = p->pPars->nTimeOut ? time(NULL) + p->pPars->nTimeOut : 0; - assert( Vec_PtrSize(p->vSolvers) == 0 ); - // create the first timeframe - Pdr_ManCreateSolver( p, (k = 0) ); - while ( 1 ) - { - p->nFrames = k; - assert( k == Vec_PtrSize(p->vSolvers)-1 ); - RetValue = Pdr_ManCheckCube( p, k, NULL, &pCube, p->pPars->nConfLimit ); - if ( RetValue == -1 ) - { - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - printf( "Reached conflict limit (%d).\n", p->pPars->nConfLimit ); - p->pPars->iFrame = k; - return -1; - } - if ( RetValue == 0 ) - { - RetValue = Pdr_ManBlockCube( p, pCube ); - if ( RetValue == -1 ) - { - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - printf( "Reached conflict limit (%d).\n", p->pPars->nConfLimit ); - p->pPars->iFrame = k; - return -1; - } - if ( RetValue == 0 ) - { - if ( fPrintClauses ) - { - printf( "*** Clauses after frame %d:\n", k ); - Pdr_ManPrintClauses( p, 0 ); - } - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - p->pPars->iFrame = k; - return 0; // SAT - } - } - else - { - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - // open a new timeframe - assert( pCube == NULL ); - Pdr_ManSetPropertyOutput( p, k ); - Pdr_ManCreateSolver( p, ++k ); - if ( fPrintClauses ) - { - printf( "*** Clauses after frame %d:\n", k ); - Pdr_ManPrintClauses( p, 0 ); - } - // push clauses into this timeframe - RetValue = Pdr_ManPushClauses( p ); - if ( RetValue == -1 ) - { - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - printf( "Reached conflict limit (%d).\n", p->pPars->nConfLimit ); - p->pPars->iFrame = k; - return -1; - } - if ( RetValue ) - { - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - Pdr_ManReportInvariant( p ); - Pdr_ManVerifyInvariant( p ); - p->pPars->iFrame = k; - return 1; // UNSAT - } - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 0, clock() - clkStart ); - clkStart = clock(); - } - - // check the timeout - if ( p->timeToStop && time(NULL) > p->timeToStop ) - { - if ( fPrintClauses ) - { - printf( "*** Clauses after frame %d:\n", k ); - Pdr_ManPrintClauses( p, 0 ); - } - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - printf( "Reached timeout (%d seconds).\n", p->pPars->nTimeOut ); - p->pPars->iFrame = k; - return -1; - } - if ( p->pPars->nFrameMax && k >= p->pPars->nFrameMax ) - { - if ( p->pPars->fVerbose ) - Pdr_ManPrintProgress( p, 1, clock() - clkStart ); - printf( "Reached limit on the number of timeframes (%d).\n", p->pPars->nFrameMax ); - p->pPars->iFrame = k; - return -1; - } - } - return RetValue; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManSolve_( Aig_Man_t * pAig, Pdr_Par_t * pPars, Vec_Int_t ** pvPrioInit, Abc_Cex_t ** ppCex ) -{ - Pdr_Man_t * p; - int RetValue; - int clk = clock(); - p = Pdr_ManStart( pAig, pPars, pvPrioInit? *pvPrioInit : NULL ); - RetValue = Pdr_ManSolveInt( p ); - *ppCex = RetValue ? NULL : Pdr_ManDeriveCex( p ); - if ( p->pPars->fDumpInv ) - Pdr_ManDumpClauses( p, (char *)"inv.pla", RetValue==1 ); - -// if ( *ppCex && pPars->fVerbose ) -// printf( "Found counter-example in frame %d after exploring %d frames.\n", -// (*ppCex)->iFrame, p->nFrames ); - p->tTotal += clock() - clk; - if ( pvPrioInit ) - { - *pvPrioInit = p->vPrio; - p->vPrio = NULL; - } - Pdr_ManStop( p ); - return RetValue; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManSolve( Aig_Man_t * pAig, Pdr_Par_t * pPars, Abc_Cex_t ** ppCex ) -{ -/* - Vec_Int_t * vPrioInit = NULL; - int RetValue, nTimeOut; - if ( pPars->nTimeOut > 0 ) - return Pdr_ManSolve_( pAig, pPars, NULL, ppCex ); - nTimeOut = pPars->nTimeOut; - pPars->nTimeOut = 10; - RetValue = Pdr_ManSolve_( pAig, pPars, &vPrioInit, ppCex ); - pPars->nTimeOut = nTimeOut; - if ( RetValue == -1 ) - RetValue = Pdr_ManSolve_( pAig, pPars, &vPrioInit, ppCex ); - Vec_IntFree( vPrioInit ); - return RetValue; -*/ - return Pdr_ManSolve_( pAig, pPars, NULL, ppCex ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrInt.h b/src/sat/pdr/pdrInt.h deleted file mode 100644 index f49ee7d0..00000000 --- a/src/sat/pdr/pdrInt.h +++ /dev/null @@ -1,198 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrInt.h] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Internal declarations.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrInt.h,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#ifndef __PDR_INT_H__ -#define __PDR_INT_H__ - -//////////////////////////////////////////////////////////////////////// -/// INCLUDES /// -//////////////////////////////////////////////////////////////////////// - -#include "saig.h" -#include "cnf.h" -#include "satSolver.h" -#include "pdr.h" - -ABC_NAMESPACE_HEADER_START - -//////////////////////////////////////////////////////////////////////// -/// PARAMETERS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// BASIC TYPES /// -//////////////////////////////////////////////////////////////////////// - -typedef struct Pdr_Set_t_ Pdr_Set_t; -struct Pdr_Set_t_ -{ - word Sign; // signature - int nRefs; // ref counter - int nTotal; // total literals - int nLits; // num flop literals - int Lits[0]; -}; - -typedef struct Pdr_Obl_t_ Pdr_Obl_t; -struct Pdr_Obl_t_ -{ - int iFrame; // time frame - int prio; // priority - int nRefs; // reference counter - Pdr_Set_t * pState; // state cube - Pdr_Obl_t * pNext; // next one - Pdr_Obl_t * pLink; // queue link -}; - -typedef struct Pdr_Man_t_ Pdr_Man_t; -struct Pdr_Man_t_ -{ - // input problem - Pdr_Par_t * pPars; // parameters - Aig_Man_t * pAig; // user's AIG - // static CNF representation - Cnf_Dat_t * pCnf1; // CNF for this AIG - Vec_Int_t * vVar2Reg; // mapping of SAT var into registers - // dynamic CNF representation - Cnf_Dat_t * pCnf2; // CNF for this AIG - Vec_Int_t** pvId2Vars; // for each used ObjId, maps frame into SAT var - Vec_Ptr_t * vVar2Ids; // for each used frame, maps SAT var into ObjId - // data representation - Vec_Ptr_t * vSolvers; // SAT solvers - Vec_Vec_t * vClauses; // clauses by timeframe - Pdr_Obl_t * pQueue; // proof obligations - int * pOrder; // ordering of the lits - Vec_Int_t * vActVars; // the counter of activation variables - // internal use - Vec_Int_t * vPrio; // priority flops - Vec_Int_t * vLits; // array of literals - Vec_Int_t * vCiObjs; // cone leaves - Vec_Int_t * vCoObjs; // cone roots - Vec_Int_t * vCiVals; // cone leaf values - Vec_Int_t * vCoVals; // cone root values - Vec_Int_t * vNodes; // cone nodes - Vec_Int_t * vUndo; // cone undos - Vec_Int_t * vVisits; // intermediate - Vec_Int_t * vCi2Rem; // CIs to be removed - Vec_Int_t * vRes; // final result - Vec_Int_t * vSuppLits; // support literals - Pdr_Set_t * pCubeJust; // justification - // statistics - int nBlocks; // the number of times blockState was called - int nObligs; // the number of proof obligations derived - int nCubes; // the number of cubes derived - int nCalls; // the number of SAT calls - int nCallsS; // the number of SAT calls (sat) - int nCallsU; // the number of SAT calls (unsat) - int nStarts; // the number of SAT solver restarts - int nFrames; // frames explored - int nCasesSS; - int nCasesSU; - int nCasesUS; - int nCasesUU; - // runtime - int timeStart; - int timeToStop; - // time stats - int tSat; - int tSatSat; - int tSatUnsat; - int tGeneral; - int tPush; - int tTsim; - int tContain; - int tCnf; - int tTotal; -}; - -//////////////////////////////////////////////////////////////////////// -/// MACRO DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -static inline sat_solver * Pdr_ManSolver( Pdr_Man_t * p, int k ) { return (sat_solver *)Vec_PtrEntry(p->vSolvers, k); } - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -/*=== pdrCex.c ==========================================================*/ -extern Abc_Cex_t * Pdr_ManDeriveCex( Pdr_Man_t * p ); -/*=== pdrCnf.c ==========================================================*/ -extern int Pdr_ObjSatVar( Pdr_Man_t * p, int k, Aig_Obj_t * pObj ); -extern int Pdr_ObjRegNum( Pdr_Man_t * p, int k, int iSatVar ); -extern int Pdr_ManFreeVar( Pdr_Man_t * p, int k ); -extern sat_solver * Pdr_ManNewSolver( sat_solver * pSat, Pdr_Man_t * p, int k, int fInit ); -/*=== pdrCore.c ==========================================================*/ -extern int Pdr_ManCheckContainment( Pdr_Man_t * p, int k, Pdr_Set_t * pSet ); -/*=== pdrInv.c ==========================================================*/ -extern void Pdr_ManPrintProgress( Pdr_Man_t * p, int fClose, int Time ); -extern void Pdr_ManPrintClauses( Pdr_Man_t * p, int kStart ); -extern void Pdr_ManDumpClauses( Pdr_Man_t * p, char * pFileName, int fProved ); -extern void Pdr_ManReportInvariant( Pdr_Man_t * p ); -extern void Pdr_ManVerifyInvariant( Pdr_Man_t * p ); -/*=== pdrMan.c ==========================================================*/ -extern Pdr_Man_t * Pdr_ManStart( Aig_Man_t * pAig, Pdr_Par_t * pPars, Vec_Int_t * vPrioInit ); -extern void Pdr_ManStop( Pdr_Man_t * p ); -extern Abc_Cex_t * Pdr_ManDeriveCex( Pdr_Man_t * p ); -/*=== pdrSat.c ==========================================================*/ -extern sat_solver * Pdr_ManCreateSolver( Pdr_Man_t * p, int k ); -extern sat_solver * Pdr_ManFetchSolver( Pdr_Man_t * p, int k ); -extern void Pdr_ManSetPropertyOutput( Pdr_Man_t * p, int k ); -extern Vec_Int_t * Pdr_ManCubeToLits( Pdr_Man_t * p, int k, Pdr_Set_t * pCube, int fCompl, int fNext ); -extern Vec_Int_t * Pdr_ManLitsToCube( Pdr_Man_t * p, int k, int * pArray, int nArray ); -extern void Pdr_ManSolverAddClause( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ); -extern void Pdr_ManCollectValues( Pdr_Man_t * p, int k, Vec_Int_t * vObjIds, Vec_Int_t * vValues ); -extern int Pdr_ManCheckCubeCs( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ); -extern int Pdr_ManCheckCube( Pdr_Man_t * p, int k, Pdr_Set_t * pCube, Pdr_Set_t ** ppPred, int nConfLimit ); -/*=== pdrTsim.c ==========================================================*/ -extern Pdr_Set_t * Pdr_ManTernarySim( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ); -/*=== pdrUtil.c ==========================================================*/ -extern Pdr_Set_t * Pdr_SetAlloc( int nSize ); -extern Pdr_Set_t * Pdr_SetCreate( Vec_Int_t * vLits, Vec_Int_t * vPiLits ); -extern Pdr_Set_t * Pdr_SetCreateFrom( Pdr_Set_t * pSet, int iRemove ); -extern Pdr_Set_t * Pdr_SetCreateSubset( Pdr_Set_t * pSet, int * pLits, int nLits ); -extern Pdr_Set_t * Pdr_SetDup( Pdr_Set_t * pSet ); -extern Pdr_Set_t * Pdr_SetRef( Pdr_Set_t * p ); -extern void Pdr_SetDeref( Pdr_Set_t * p ); -extern int Pdr_SetContains( Pdr_Set_t * pOld, Pdr_Set_t * pNew ); -extern int Pdr_SetContainsSimple( Pdr_Set_t * pOld, Pdr_Set_t * pNew ); -extern int Pdr_SetIsInit( Pdr_Set_t * p, int iRemove ); -extern void Pdr_SetPrint( FILE * pFile, Pdr_Set_t * p, int nRegs, Vec_Int_t * vFlopCounts ); -extern int Pdr_SetCompare( Pdr_Set_t ** pp1, Pdr_Set_t ** pp2 ); -extern Pdr_Obl_t * Pdr_OblStart( int k, int prio, Pdr_Set_t * pState, Pdr_Obl_t * pNext ); -extern Pdr_Obl_t * Pdr_OblRef( Pdr_Obl_t * p ); -extern void Pdr_OblDeref( Pdr_Obl_t * p ); -extern int Pdr_QueueIsEmpty( Pdr_Man_t * p ); -extern Pdr_Obl_t * Pdr_QueueHead( Pdr_Man_t * p ); -extern Pdr_Obl_t * Pdr_QueuePop( Pdr_Man_t * p ); -extern void Pdr_QueuePush( Pdr_Man_t * p, Pdr_Obl_t * pObl ); -extern void Pdr_QueuePrint( Pdr_Man_t * p ); -extern void Pdr_QueueStop( Pdr_Man_t * p ); -extern int Pdr_ManCubeJust( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ); - -ABC_NAMESPACE_HEADER_END - - -#endif - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - diff --git a/src/sat/pdr/pdrInv.c b/src/sat/pdr/pdrInv.c deleted file mode 100644 index 2f630e28..00000000 --- a/src/sat/pdr/pdrInv.c +++ /dev/null @@ -1,376 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrInv.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Invariant computation, printing, verification.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrInv.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "abc.h" // for Abc_NtkCollectCioNames() -#include "main.h" // for Abc_FrameReadGlobalFrame() - -#include "pdrInt.h" -#include "extra.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManPrintProgress( Pdr_Man_t * p, int fClose, int Time ) -{ - static int PastSize; - Vec_Ptr_t * vVec; - int i, ThisSize, Length, LengthStart; - if ( Vec_PtrSize(p->vSolvers) < 2 ) - return; - // count the total length of the printout - Length = 0; - Vec_VecForEachLevel( p->vClauses, vVec, i ) - Length += 1 + Extra_Base10Log(Vec_PtrSize(vVec)+1); - // determine the starting point - LengthStart = ABC_MAX( 0, Length - 70 ); - printf( "%3d :", Vec_PtrSize(p->vSolvers)-1 ); - ThisSize = 6; - if ( LengthStart > 0 ) - { - printf( " ..." ); - ThisSize += 4; - } - Length = 0; - Vec_VecForEachLevel( p->vClauses, vVec, i ) - { - if ( Length < LengthStart ) - { - Length += 1 + Extra_Base10Log(Vec_PtrSize(vVec)+1); - continue; - } - printf( " %d", Vec_PtrSize(vVec) ); - Length += 1 + Extra_Base10Log(Vec_PtrSize(vVec)+1); - ThisSize += 1 + Extra_Base10Log(Vec_PtrSize(vVec)+1); - } - if ( fClose ) - { - for ( i = 0; i < PastSize - ThisSize; i++ ) - printf( " " ); - printf( "\n" ); - } - else - { - printf( "\r" ); - PastSize = ThisSize; - } -// printf(" %.2f sec", (float)(Time)/(float)(CLOCKS_PER_SEC)); -} - -/**Function************************************************************* - - Synopsis [Counts how many times each flop appears in the set of cubes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Int_t * Pdr_ManCountFlops( Pdr_Man_t * p, Vec_Ptr_t * vCubes ) -{ - Vec_Int_t * vFlopCount; - Pdr_Set_t * pCube; - int i, n; - vFlopCount = Vec_IntStart( Aig_ManRegNum(p->pAig) ); - Vec_PtrForEachEntry( Pdr_Set_t *, vCubes, pCube, i ) - for ( n = 0; n < pCube->nLits; n++ ) - { - assert( pCube->Lits[n] >= 0 && pCube->Lits[n] < 2*Aig_ManRegNum(p->pAig) ); - Vec_IntAddToEntry( vFlopCount, pCube->Lits[n] >> 1, 1 ); - } - return vFlopCount; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManFindInvariantStart( Pdr_Man_t * p ) -{ - Vec_Ptr_t * vArrayK; - int k, kMax = Vec_PtrSize(p->vSolvers)-1; - Vec_VecForEachLevelStartStop( p->vClauses, vArrayK, k, 1, kMax+1 ) - if ( Vec_PtrSize(vArrayK) == 0 ) - return k; -// return -1; - // if there is no starting point (as in case of SAT or undecided), return the last frame -// printf( "The last timeframe contains %d clauses.\n", Vec_PtrSize(Vec_VecEntry(p->vClauses, kMax)) ); - return kMax; -} - -/**Function************************************************************* - - Synopsis [Counts the number of variables used in the clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Ptr_t * Pdr_ManCollectCubes( Pdr_Man_t * p, int kStart ) -{ - Vec_Ptr_t * vResult; - Vec_Ptr_t * vArrayK; - Pdr_Set_t * pSet; - int i, j; - vResult = Vec_PtrAlloc( 100 ); - Vec_VecForEachLevelStart( p->vClauses, vArrayK, i, kStart ) - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK, pSet, j ) - Vec_PtrPush( vResult, pSet ); - return vResult; -} - -/**Function************************************************************* - - Synopsis [Counts the number of variables used in the clauses.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManCountVariables( Pdr_Man_t * p, int kStart ) -{ - Vec_Int_t * vFlopCounts; - Vec_Ptr_t * vCubes; - int i, Entry, Counter = 0; - vCubes = Pdr_ManCollectCubes( p, kStart ); - vFlopCounts = Pdr_ManCountFlops( p, vCubes ); - Vec_IntForEachEntry( vFlopCounts, Entry, i ) - Counter += (Entry > 0); - Vec_IntFreeP( &vFlopCounts ); - Vec_PtrFree( vCubes ); - return Counter; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManPrintClauses( Pdr_Man_t * p, int kStart ) -{ - Vec_Ptr_t * vArrayK; - Pdr_Set_t * pCube; - int i, k, Counter = 0; - Vec_VecForEachLevelStart( p->vClauses, vArrayK, k, kStart ) - { - Vec_PtrSort( vArrayK, (int (*)(void))Pdr_SetCompare ); - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK, pCube, i ) - { - printf( "C=%4d. F=%4d ", Counter++, k ); - Pdr_SetPrint( stdout, pCube, Aig_ManRegNum(p->pAig), NULL ); - printf( "\n" ); - } - } -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManDumpClauses( Pdr_Man_t * p, char * pFileName, int fProved ) -{ - int fUseSupp = 1; - FILE * pFile; - Vec_Int_t * vFlopCounts; - Vec_Ptr_t * vCubes; - Pdr_Set_t * pCube; - char ** pNamesCi; - int i, kStart; - // create file - pFile = fopen( pFileName, "w" ); - if ( pFile == NULL ) - { - printf( "Cannot open file \"%s\" for writing invariant.\n", pFileName ); - return; - } - // collect cubes - kStart = Pdr_ManFindInvariantStart( p ); - vCubes = Pdr_ManCollectCubes( p, kStart ); - Vec_PtrSort( vCubes, (int (*)(void))Pdr_SetCompare ); - // collect variable appearances - vFlopCounts = fUseSupp ? Pdr_ManCountFlops( p, vCubes ) : NULL; - // output the header - if ( fProved ) - fprintf( pFile, "# Inductive invariant for \"%s\"\n", p->pAig->pName ); - else - fprintf( pFile, "# Clauses of the last timeframe for \"%s\"\n", p->pAig->pName ); - fprintf( pFile, "# generated by PDR in ABC on %s\n", Aig_TimeStamp() ); - fprintf( pFile, ".i %d\n", fUseSupp ? Pdr_ManCountVariables(p, kStart) : Aig_ManRegNum(p->pAig) ); - fprintf( pFile, ".o 1\n" ); - fprintf( pFile, ".p %d\n", Vec_PtrSize(vCubes) ); - // output flop names - pNamesCi = Abc_NtkCollectCioNames( Abc_FrameReadNtk( Abc_FrameReadGlobalFrame() ), 0 ); - if ( pNamesCi ) - { - fprintf( pFile, ".ilb" ); - for ( i = 0; i < Aig_ManRegNum(p->pAig); i++ ) - if ( !fUseSupp || Vec_IntEntry( vFlopCounts, i ) ) - fprintf( pFile, " %s", pNamesCi[Saig_ManPiNum(p->pAig) + i] ); - fprintf( pFile, "\n" ); - ABC_FREE( pNamesCi ); - fprintf( pFile, ".ob inv\n" ); - } - // output cubes - Vec_PtrForEachEntry( Pdr_Set_t *, vCubes, pCube, i ) - { - Pdr_SetPrint( pFile, pCube, Aig_ManRegNum(p->pAig), vFlopCounts ); - fprintf( pFile, " 1\n" ); - } - fprintf( pFile, ".e\n\n" ); - fclose( pFile ); - Vec_IntFreeP( &vFlopCounts ); - Vec_PtrFree( vCubes ); - if ( fProved ) - printf( "Inductive invariant was written into file \"%s\".\n", pFileName ); - else - printf( "Clauses of the last timeframe were written into file \"%s\".\n", pFileName ); -} - - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManReportInvariant( Pdr_Man_t * p ) -{ - Vec_Ptr_t * vCubes; - int kStart = Pdr_ManFindInvariantStart( p ); - vCubes = Pdr_ManCollectCubes( p, kStart ); - printf( "Invariant F[%d] : %d clauses with %d flops (out of %d)\n", - kStart, Vec_PtrSize(vCubes), Pdr_ManCountVariables(p, kStart), Aig_ManRegNum(p->pAig) ); - Vec_PtrFree( vCubes ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManVerifyInvariant( Pdr_Man_t * p ) -{ - sat_solver * pSat; - Vec_Int_t * vLits; - Vec_Ptr_t * vCubes; - Pdr_Set_t * pCube; - int i, kStart, kThis, RetValue, Counter = 0, clk = clock(); - // collect cubes used in the inductive invariant - kStart = Pdr_ManFindInvariantStart( p ); - vCubes = Pdr_ManCollectCubes( p, kStart ); - // create solver with the cubes - kThis = Vec_PtrSize(p->vSolvers); - pSat = Pdr_ManCreateSolver( p, kThis ); - // add the property output - Pdr_ManSetPropertyOutput( p, kThis ); - // add the clauses - Vec_PtrForEachEntry( Pdr_Set_t *, vCubes, pCube, i ) - { - vLits = Pdr_ManCubeToLits( p, kThis, pCube, 1, 0 ); - RetValue = sat_solver_addclause( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits) + Vec_IntSize(vLits) ); - assert( RetValue ); - sat_solver_compress( pSat ); - } - // check each clause - Vec_PtrForEachEntry( Pdr_Set_t *, vCubes, pCube, i ) - { - vLits = Pdr_ManCubeToLits( p, kThis, pCube, 0, 1 ); - RetValue = sat_solver_solve( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits) + Vec_IntSize(vLits), 0, 0, 0, 0 ); - if ( RetValue != l_False ) - { - printf( "Verification of clause %d failed.\n", i ); - Counter++; - } - } - if ( Counter ) - printf( "Verification of %d clauses has failed.\n", Counter ); - else - { - printf( "Verification of invariant with %d clauses was successful. ", Vec_PtrSize(vCubes) ); - Abc_PrintTime( 1, "Time", clock() - clk ); - } -// sat_solver_delete( pSat ); - Vec_PtrFree( vCubes ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrMan.c b/src/sat/pdr/pdrMan.c deleted file mode 100644 index 95a38efb..00000000 --- a/src/sat/pdr/pdrMan.c +++ /dev/null @@ -1,194 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrMan.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Manager procedures.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrMan.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Creates manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Man_t * Pdr_ManStart( Aig_Man_t * pAig, Pdr_Par_t * pPars, Vec_Int_t * vPrioInit ) -{ - Pdr_Man_t * p; - p = ABC_CALLOC( Pdr_Man_t, 1 ); - p->pPars = pPars; - p->pAig = pAig; - p->vSolvers = Vec_PtrAlloc( 0 ); - p->vClauses = Vec_VecAlloc( 0 ); - p->pQueue = NULL; - p->pOrder = ABC_ALLOC( int, Aig_ManRegNum(pAig) ); - p->vActVars = Vec_IntAlloc( 256 ); - // internal use - p->vPrio = vPrioInit ? vPrioInit : Vec_IntStart( Aig_ManRegNum(pAig) ); // priority flops - p->vLits = Vec_IntAlloc( 100 ); // array of literals - p->vCiObjs = Vec_IntAlloc( 100 ); // cone leaves - p->vCoObjs = Vec_IntAlloc( 100 ); // cone roots - p->vCiVals = Vec_IntAlloc( 100 ); // cone leaf values - p->vCoVals = Vec_IntAlloc( 100 ); // cone root values - p->vNodes = Vec_IntAlloc( 100 ); // cone nodes - p->vUndo = Vec_IntAlloc( 100 ); // cone undos - p->vVisits = Vec_IntAlloc( 100 ); // intermediate - p->vCi2Rem = Vec_IntAlloc( 100 ); // CIs to be removed - p->vRes = Vec_IntAlloc( 100 ); // final result - p->vSuppLits= Vec_IntAlloc( 100 ); // support literals - p->pCubeJust= Pdr_SetAlloc( Saig_ManRegNum(pAig) ); - // additional AIG data-members - if ( pAig->pFanData == NULL ) - Aig_ManFanoutStart( pAig ); - if ( pAig->pTerSimData == NULL ) - pAig->pTerSimData = ABC_CALLOC( unsigned, 1 + (Aig_ManObjNumMax(pAig) / 16) ); - p->timeStart = clock(); - return p; -} - -/**Function************************************************************* - - Synopsis [Frees manager.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManStop( Pdr_Man_t * p ) -{ - Pdr_Set_t * pCla; - sat_solver * pSat; - int i, k; - Aig_ManCleanMarkAB( p->pAig ); - if ( p->pPars->fVerbose ) - { - printf( "Block =%5d Oblig =%6d Clause =%6d Call =%6d (sat=%.1f%%) Start =%4d\n", - p->nBlocks, p->nObligs, p->nCubes, p->nCalls, 100.0 * p->nCallsS / p->nCalls, p->nStarts ); - ABC_PRTP( "SAT solving", p->tSat, p->tTotal ); - ABC_PRTP( " unsat ", p->tSatUnsat, p->tTotal ); - ABC_PRTP( " sat ", p->tSatSat, p->tTotal ); - ABC_PRTP( "Generalize ", p->tGeneral, p->tTotal ); - ABC_PRTP( "Push clause", p->tPush, p->tTotal ); - ABC_PRTP( "Ternary sim", p->tTsim, p->tTotal ); - ABC_PRTP( "Containment", p->tContain, p->tTotal ); - ABC_PRTP( "CNF compute", p->tCnf, p->tTotal ); - ABC_PRTP( "TOTAL ", p->tTotal, p->tTotal ); - } -// printf( "SS =%6d. SU =%6d. US =%6d. UU =%6d.\n", p->nCasesSS, p->nCasesSU, p->nCasesUS, p->nCasesUU ); - Vec_PtrForEachEntry( sat_solver *, p->vSolvers, pSat, i ) - sat_solver_delete( pSat ); - Vec_PtrFree( p->vSolvers ); - Vec_VecForEachEntry( Pdr_Set_t *, p->vClauses, pCla, i, k ) - Pdr_SetDeref( pCla ); - Vec_VecFree( p->vClauses ); - Pdr_QueueStop( p ); - ABC_FREE( p->pOrder ); - Vec_IntFree( p->vActVars ); - // static CNF - Cnf_DataFree( p->pCnf1 ); - Vec_IntFreeP( &p->vVar2Reg ); - // dynamic CNF - Cnf_DataFree( p->pCnf2 ); - if ( p->pvId2Vars ) - for ( i = 0; i < Aig_ManObjNumMax(p->pAig); i++ ) - Vec_IntFreeP( &p->pvId2Vars[i] ); - ABC_FREE( p->pvId2Vars ); - Vec_VecFreeP( (Vec_Vec_t **)&p->vVar2Ids ); - // internal use - Vec_IntFreeP( &p->vPrio ); // priority flops - Vec_IntFree( p->vLits ); // array of literals - Vec_IntFree( p->vCiObjs ); // cone leaves - Vec_IntFree( p->vCoObjs ); // cone roots - Vec_IntFree( p->vCiVals ); // cone leaf values - Vec_IntFree( p->vCoVals ); // cone root values - Vec_IntFree( p->vNodes ); // cone nodes - Vec_IntFree( p->vUndo ); // cone undos - Vec_IntFree( p->vVisits ); // intermediate - Vec_IntFree( p->vCi2Rem ); // CIs to be removed - Vec_IntFree( p->vRes ); // final result - Vec_IntFree( p->vSuppLits ); // support literals - ABC_FREE( p->pCubeJust ); - // additional AIG data-members - if ( p->pAig->pFanData != NULL ) - Aig_ManFanoutStop( p->pAig ); - if ( p->pAig->pTerSimData != NULL ) - ABC_FREE( p->pAig->pTerSimData ); - ABC_FREE( p ); -} - -/**Function************************************************************* - - Synopsis [Derives counter-example.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Abc_Cex_t * Pdr_ManDeriveCex( Pdr_Man_t * p ) -{ - Abc_Cex_t * pCex; - Pdr_Obl_t * pObl; - int i, f, Lit, nFrames = 0; - // count the number of frames - for ( pObl = p->pQueue; pObl; pObl = pObl->pNext ) - nFrames++; - // create the counter-example - pCex = Abc_CexAlloc( Aig_ManRegNum(p->pAig), Saig_ManPiNum(p->pAig), nFrames ); - pCex->iPo = (p->pPars->iOutput==-1)? 0 : p->pPars->iOutput; - pCex->iFrame = nFrames-1; - for ( pObl = p->pQueue, f = 0; pObl; pObl = pObl->pNext, f++ ) - for ( i = pObl->pState->nLits; i < pObl->pState->nTotal; i++ ) - { - Lit = pObl->pState->Lits[i]; - if ( lit_sign(Lit) ) - continue; - assert( lit_var(Lit) < pCex->nPis ); - Aig_InfoSetBit( pCex->pData, pCex->nRegs + f * pCex->nPis + lit_var(Lit) ); - } - assert( f == nFrames ); - return pCex; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrSat.c b/src/sat/pdr/pdrSat.c deleted file mode 100644 index cc4c2b1b..00000000 --- a/src/sat/pdr/pdrSat.c +++ /dev/null @@ -1,373 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrSat.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [SAT solver procedures.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrSat.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Creates new SAT solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -sat_solver * Pdr_ManCreateSolver( Pdr_Man_t * p, int k ) -{ - sat_solver * pSat; - assert( Vec_PtrSize(p->vSolvers) == k ); - assert( Vec_VecSize(p->vClauses) == k ); - assert( Vec_IntSize(p->vActVars) == k ); - // create new solver - pSat = sat_solver_new(); - pSat = Pdr_ManNewSolver( pSat, p, k, (int)(k == 0) ); - Vec_PtrPush( p->vSolvers, pSat ); - Vec_VecExpand( p->vClauses, k ); - Vec_IntPush( p->vActVars, 0 ); - // add property cone - Pdr_ObjSatVar( p, k, Aig_ManPo(p->pAig, (p->pPars->iOutput==-1)?0:p->pPars->iOutput ) ); - return pSat; -} - -/**Function************************************************************* - - Synopsis [Returns old or restarted solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -sat_solver * Pdr_ManFetchSolver( Pdr_Man_t * p, int k ) -{ - sat_solver * pSat; - Vec_Ptr_t * vArrayK; - Pdr_Set_t * pCube; - int i, j; - pSat = Pdr_ManSolver(p, k); - if ( Vec_IntEntry(p->vActVars, k) < p->pPars->nRecycle ) - return pSat; - assert( k < Vec_PtrSize(p->vSolvers) - 1 ); - p->nStarts++; -// sat_solver_delete( pSat ); -// pSat = sat_solver_new(); - sat_solver_rollback( pSat ); - // create new SAT solver - pSat = Pdr_ManNewSolver( pSat, p, k, (int)(k == 0) ); - // write new SAT solver - Vec_PtrWriteEntry( p->vSolvers, k, pSat ); - Vec_IntWriteEntry( p->vActVars, k, 0 ); - // set the property output - Pdr_ManSetPropertyOutput( p, k ); - // add the clauses - Vec_VecForEachLevelStart( p->vClauses, vArrayK, i, k ) - Vec_PtrForEachEntry( Pdr_Set_t *, vArrayK, pCube, j ) - Pdr_ManSolverAddClause( p, k, pCube ); - return pSat; -} - -/**Function************************************************************* - - Synopsis [Converts SAT variables into register IDs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Int_t * Pdr_ManLitsToCube( Pdr_Man_t * p, int k, int * pArray, int nArray ) -{ - int i, RegId; - Vec_IntClear( p->vLits ); - for ( i = 0; i < nArray; i++ ) - { - RegId = Pdr_ObjRegNum( p, k, lit_var(pArray[i]) ); - if ( RegId == -1 ) - continue; - assert( RegId >= 0 && RegId < Aig_ManRegNum(p->pAig) ); - Vec_IntPush( p->vLits, toLitCond(RegId, !lit_sign(pArray[i])) ); - } - assert( Vec_IntSize(p->vLits) >= 0 && Vec_IntSize(p->vLits) <= nArray ); - return p->vLits; -} - -/**Function************************************************************* - - Synopsis [Converts the cube in terms of RO numbers into array of CNF literals.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Vec_Int_t * Pdr_ManCubeToLits( Pdr_Man_t * p, int k, Pdr_Set_t * pCube, int fCompl, int fNext ) -{ - Aig_Obj_t * pObj; - int i, iVar, iVarMax = 0; - int clk = clock(); - Vec_IntClear( p->vLits ); - for ( i = 0; i < pCube->nLits; i++ ) - { - if ( pCube->Lits[i] == -1 ) - continue; - if ( fNext ) - pObj = Saig_ManLi( p->pAig, lit_var(pCube->Lits[i]) ); - else - pObj = Saig_ManLo( p->pAig, lit_var(pCube->Lits[i]) ); - iVar = Pdr_ObjSatVar( p, k, pObj ); assert( iVar >= 0 ); - iVarMax = ABC_MAX( iVarMax, iVar ); - Vec_IntPush( p->vLits, toLitCond( iVar, fCompl ^ lit_sign(pCube->Lits[i]) ) ); - } -// sat_solver_setnvars( Pdr_ManSolver(p, k), iVarMax + 1 ); - p->tCnf += clock() - clk; - return p->vLits; -} - -/**Function************************************************************* - - Synopsis [Sets the property output to 0 (sat) forever.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManSetPropertyOutput( Pdr_Man_t * p, int k ) -{ - sat_solver * pSat; - int Lit, RetValue; - pSat = Pdr_ManSolver(p, k); - Lit = toLitCond( Pdr_ObjSatVar(p, k, Aig_ManPo(p->pAig, (p->pPars->iOutput==-1)?0:p->pPars->iOutput)), 1 ); // neg literal - RetValue = sat_solver_addclause( pSat, &Lit, &Lit + 1 ); - assert( RetValue == 1 ); - sat_solver_compress( pSat ); -} - -/**Function************************************************************* - - Synopsis [Adds one clause in terms of ROs to the k-th SAT solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManSolverAddClause( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ) -{ - sat_solver * pSat; - Vec_Int_t * vLits; - int RetValue; - pSat = Pdr_ManSolver(p, k); - vLits = Pdr_ManCubeToLits( p, k, pCube, 1, 0 ); - RetValue = sat_solver_addclause( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits) + Vec_IntSize(vLits) ); - assert( RetValue == 1 ); - sat_solver_compress( pSat ); -} - -/**Function************************************************************* - - Synopsis [Collects values of the RO/RI variables in k-th SAT solver.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManCollectValues( Pdr_Man_t * p, int k, Vec_Int_t * vObjIds, Vec_Int_t * vValues ) -{ - sat_solver * pSat; - Aig_Obj_t * pObj; - int iVar, i; - Vec_IntClear( vValues ); - pSat = Pdr_ManSolver(p, k); - Aig_ManForEachObjVec( vObjIds, p->pAig, pObj, i ) - { - iVar = Pdr_ObjSatVar( p, k, pObj ); assert( iVar >= 0 ); - Vec_IntPush( vValues, sat_solver_var_value(pSat, iVar) ); - } -} - -/**Function************************************************************* - - Synopsis [Checks if the cube holds (UNSAT) in the given timeframe.] - - Description [Return 1/0 if cube or property are proved to hold/fail - in k-th timeframe. Returns the predecessor bad state in ppPred.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManCheckCubeCs( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ) -{ - sat_solver * pSat; - Vec_Int_t * vLits; - int RetValue; - pSat = Pdr_ManFetchSolver( p, k ); - vLits = Pdr_ManCubeToLits( p, k, pCube, 0, 0 ); - RetValue = sat_solver_solve( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits) + Vec_IntSize(vLits), 0, 0, 0, 0 ); - if ( RetValue == l_Undef ) - return -1; - return (RetValue == l_False); -} - -/**Function************************************************************* - - Synopsis [Checks if the cube holds (UNSAT) in the given timeframe.] - - Description [Return 1/0 if cube or property are proved to hold/fail - in k-th timeframe. Returns the predecessor bad state in ppPred.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManCheckCube( Pdr_Man_t * p, int k, Pdr_Set_t * pCube, Pdr_Set_t ** ppPred, int nConfLimit ) -{ - int fUseLit = 1; - int fLitUsed = 0; - sat_solver * pSat; - Vec_Int_t * vLits; - int Lit, RetValue, clk; - p->nCalls++; - pSat = Pdr_ManFetchSolver( p, k ); - if ( pCube == NULL ) // solve the property - { - clk = clock(); - Lit = toLit( Pdr_ObjSatVar(p, k, Aig_ManPo(p->pAig, (p->pPars->iOutput==-1)?0:p->pPars->iOutput)) ); // pos literal (property fails) - RetValue = sat_solver_solve( pSat, &Lit, &Lit + 1, nConfLimit, 0, 0, 0 ); - if ( RetValue == l_Undef ) - return -1; - } - else // check relative containment in terms of next states - { - if ( fUseLit ) - { - fLitUsed = 1; - Vec_IntAddToEntry( p->vActVars, k, 1 ); - // add the cube in terms of current state variables - vLits = Pdr_ManCubeToLits( p, k, pCube, 1, 0 ); - // add activation literal - Lit = toLit( Pdr_ManFreeVar(p, k) ); - // add activation literal - Vec_IntPush( vLits, Lit ); - RetValue = sat_solver_addclause( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits) + Vec_IntSize(vLits) ); - assert( RetValue == 1 ); - sat_solver_compress( pSat ); - // create assumptions - vLits = Pdr_ManCubeToLits( p, k, pCube, 0, 1 ); - // add activation literal - Vec_IntPush( vLits, lit_neg(Lit) ); - } - else - vLits = Pdr_ManCubeToLits( p, k, pCube, 0, 1 ); - - // solve - clk = clock(); - RetValue = sat_solver_solve( pSat, Vec_IntArray(vLits), Vec_IntArray(vLits) + Vec_IntSize(vLits), nConfLimit, 0, 0, 0 ); - if ( RetValue == l_Undef ) - return -1; -/* - if ( RetValue == l_True ) - { - int RetValue2 = Pdr_ManCubeJust( p, k, pCube ); - if ( RetValue2 ) - p->nCasesSS++; - else - p->nCasesSU++; - } - else - { - int RetValue2 = Pdr_ManCubeJust( p, k, pCube ); - if ( RetValue2 ) - p->nCasesUS++; - else - p->nCasesUU++; - } -*/ - } - clk = clock() - clk; - p->tSat += clk; - assert( RetValue != l_Undef ); - if ( RetValue == l_False ) - { - p->tSatUnsat += clk; - p->nCallsU++; - if ( ppPred ) - *ppPred = NULL; - RetValue = 1; - } - else // if ( RetValue == l_True ) - { - p->tSatSat += clk; - p->nCallsS++; - if ( ppPred ) - *ppPred = Pdr_ManTernarySim( p, k, pCube ); - RetValue = 0; - } - -/* // for some reason, it does not work... - if ( fLitUsed ) - { - int RetValue; - Lit = lit_neg(Lit); - RetValue = sat_solver_addclause( pSat, &Lit, &Lit + 1 ); - assert( RetValue == 1 ); - sat_solver_compress( pSat ); - } -*/ - return RetValue; -} - - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrTsim.c b/src/sat/pdr/pdrTsim.c deleted file mode 100644 index 6fec1605..00000000 --- a/src/sat/pdr/pdrTsim.c +++ /dev/null @@ -1,450 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrTsim.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Ternary simulation.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrTsim.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -#define PDR_ZER 1 -#define PDR_ONE 2 -#define PDR_UND 3 - -static inline int Pdr_ManSimInfoNot( int Value ) -{ - if ( Value == PDR_ZER ) - return PDR_ONE; - if ( Value == PDR_ONE ) - return PDR_ZER; - return PDR_UND; -} - -static inline int Pdr_ManSimInfoAnd( int Value0, int Value1 ) -{ - if ( Value0 == PDR_ZER || Value1 == PDR_ZER ) - return PDR_ZER; - if ( Value0 == PDR_ONE && Value1 == PDR_ONE ) - return PDR_ONE; - return PDR_UND; -} - -static inline int Pdr_ManSimInfoGet( Aig_Man_t * p, Aig_Obj_t * pObj ) -{ - return 3 & (p->pTerSimData[Aig_ObjId(pObj) >> 4] >> ((Aig_ObjId(pObj) & 15) << 1)); -} - -static inline void Pdr_ManSimInfoSet( Aig_Man_t * p, Aig_Obj_t * pObj, int Value ) -{ - assert( Value >= PDR_ZER && Value <= PDR_UND ); - Value ^= Pdr_ManSimInfoGet( p, pObj ); - p->pTerSimData[Aig_ObjId(pObj) >> 4] ^= (Value << ((Aig_ObjId(pObj) & 15) << 1)); -} - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Marks the TFI cone and collects CIs and nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManCollectCone_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_t * vCiObjs, Vec_Int_t * vNodes ) -{ - assert( !Aig_IsComplement(pObj) ); - if ( Aig_ObjIsTravIdCurrent(pAig, pObj) ) - return; - Aig_ObjSetTravIdCurrent(pAig, pObj); - if ( Aig_ObjIsPi(pObj) ) - { - Vec_IntPush( vCiObjs, Aig_ObjId(pObj) ); - return; - } - Pdr_ManCollectCone_rec( pAig, Aig_ObjFanin0(pObj), vCiObjs, vNodes ); - if ( Aig_ObjIsPo(pObj) ) - return; - Pdr_ManCollectCone_rec( pAig, Aig_ObjFanin1(pObj), vCiObjs, vNodes ); - Vec_IntPush( vNodes, Aig_ObjId(pObj) ); -} - -/**Function************************************************************* - - Synopsis [Marks the TFI cone and collects CIs and nodes.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManCollectCone( Aig_Man_t * pAig, Vec_Int_t * vCoObjs, Vec_Int_t * vCiObjs, Vec_Int_t * vNodes ) -{ - Aig_Obj_t * pObj; - int i; - Vec_IntClear( vCiObjs ); - Vec_IntClear( vNodes ); - Aig_ManIncrementTravId( pAig ); - Aig_ObjSetTravIdCurrent( pAig, Aig_ManConst1(pAig) ); - Aig_ManForEachObjVec( vCoObjs, pAig, pObj, i ) - Pdr_ManCollectCone_rec( pAig, pObj, vCiObjs, vNodes ); -} - -/**Function************************************************************* - - Synopsis [Performs ternary simulation for one node.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManExtendOneEval( Aig_Man_t * pAig, Aig_Obj_t * pObj ) -{ - int Value0, Value1, Value; - Value0 = Pdr_ManSimInfoGet( pAig, Aig_ObjFanin0(pObj) ); - if ( Aig_ObjFaninC0(pObj) ) - Value0 = Pdr_ManSimInfoNot( Value0 ); - if ( Aig_ObjIsPo(pObj) ) - { - Pdr_ManSimInfoSet( pAig, pObj, Value0 ); - return Value0; - } - assert( Aig_ObjIsNode(pObj) ); - Value1 = Pdr_ManSimInfoGet( pAig, Aig_ObjFanin1(pObj) ); - if ( Aig_ObjFaninC1(pObj) ) - Value1 = Pdr_ManSimInfoNot( Value1 ); - Value = Pdr_ManSimInfoAnd( Value0, Value1 ); - Pdr_ManSimInfoSet( pAig, pObj, Value ); - return Value; -} - -/**Function************************************************************* - - Synopsis [Performs ternary simulation for one design.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManSimDataInit( Aig_Man_t * pAig, - Vec_Int_t * vCiObjs, Vec_Int_t * vCiVals, Vec_Int_t * vNodes, - Vec_Int_t * vCoObjs, Vec_Int_t * vCoVals, Vec_Int_t * vCi2Rem ) -{ - Aig_Obj_t * pObj; - int i; - // set the CI values - Pdr_ManSimInfoSet( pAig, Aig_ManConst1(pAig), PDR_ONE ); - Aig_ManForEachObjVec( vCiObjs, pAig, pObj, i ) - Pdr_ManSimInfoSet( pAig, pObj, (Vec_IntEntry(vCiVals, i)?PDR_ONE:PDR_ZER) ); - // set the FOs to remove - if ( vCi2Rem != NULL ) - Aig_ManForEachObjVec( vCi2Rem, pAig, pObj, i ) - Pdr_ManSimInfoSet( pAig, pObj, PDR_UND ); - // perform ternary simulation - Aig_ManForEachObjVec( vNodes, pAig, pObj, i ) - Pdr_ManExtendOneEval( pAig, pObj ); - // transfer results to the output - Aig_ManForEachObjVec( vCoObjs, pAig, pObj, i ) - Pdr_ManExtendOneEval( pAig, pObj ); - // check the results - Aig_ManForEachObjVec( vCoObjs, pAig, pObj, i ) - if ( Pdr_ManSimInfoGet( pAig, pObj ) != (Vec_IntEntry(vCoVals, i)?PDR_ONE:PDR_ZER) ) - return 0; - return 1; -} - -/**Function************************************************************* - - Synopsis [Tries to assign ternary value to one of the CIs.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManExtendOne( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_t * vUndo, Vec_Int_t * vVis ) -{ - Aig_Obj_t * pFanout; - int i, k, iFanout, Value, Value2; - assert( Saig_ObjIsLo(pAig, pObj) ); - assert( Aig_ObjIsTravIdCurrent(pAig, pObj) ); - // save original value - Value = Pdr_ManSimInfoGet( pAig, pObj ); - assert( Value == PDR_ZER || Value == PDR_ONE ); - Vec_IntPush( vUndo, Aig_ObjId(pObj) ); - Vec_IntPush( vUndo, Value ); - // update original value - Pdr_ManSimInfoSet( pAig, pObj, PDR_UND ); - // traverse - Vec_IntClear( vVis ); - Vec_IntPush( vVis, Aig_ObjId(pObj) ); - Aig_ManForEachObjVec( vVis, pAig, pObj, i ) - { - Aig_ObjForEachFanout( pAig, pObj, pFanout, iFanout, k ) - { - if ( !Aig_ObjIsTravIdCurrent(pAig, pFanout) ) - continue; - assert( Aig_ObjId(pObj) < Aig_ObjId(pFanout) ); - Value = Pdr_ManSimInfoGet( pAig, pFanout ); - if ( Value == PDR_UND ) - continue; - Value2 = Pdr_ManExtendOneEval( pAig, pFanout ); - if ( Value2 == Value ) - continue; - assert( Value2 == PDR_UND ); - Vec_IntPush( vUndo, Aig_ObjId(pFanout) ); - Vec_IntPush( vUndo, Value ); - if ( Aig_ObjIsPo(pFanout) ) - return 0; - assert( Aig_ObjIsNode(pFanout) ); - Vec_IntPushOrder( vVis, Aig_ObjId(pFanout) ); - } - } - return 1; -} - -/**Function************************************************************* - - Synopsis [Undoes the partial results of ternary simulation.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManExtendUndo( Aig_Man_t * pAig, Vec_Int_t * vUndo ) -{ - Aig_Obj_t * pObj; - int i, Value; - Aig_ManForEachObjVec( vUndo, pAig, pObj, i ) - { - Value = Vec_IntEntry(vUndo, ++i); - assert( Pdr_ManSimInfoGet(pAig, pObj) == PDR_UND ); - Pdr_ManSimInfoSet( pAig, pObj, Value ); - } -} - -/**Function************************************************************* - - Synopsis [Derives the resulting cube.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManDeriveResult( Aig_Man_t * pAig, Vec_Int_t * vCiObjs, Vec_Int_t * vCiVals, Vec_Int_t * vCi2Rem, Vec_Int_t * vRes, Vec_Int_t * vPiLits ) -{ - Aig_Obj_t * pObj; - int i, Lit; - // mark removed flop outputs - Aig_ManIncrementTravId( pAig ); - Aig_ManForEachObjVec( vCi2Rem, pAig, pObj, i ) - { - assert( Saig_ObjIsLo( pAig, pObj ) ); - Aig_ObjSetTravIdCurrent(pAig, pObj); - } - // collect flop outputs that are not marked - Vec_IntClear( vRes ); - Vec_IntClear( vPiLits ); - Aig_ManForEachObjVec( vCiObjs, pAig, pObj, i ) - { - if ( Saig_ObjIsPi(pAig, pObj) ) - { - Lit = toLitCond( Aig_ObjPioNum(pObj), (Vec_IntEntry(vCiVals, i) == 0) ); - Vec_IntPush( vPiLits, Lit ); - continue; - } - assert( Saig_ObjIsLo(pAig, pObj) ); - if ( Aig_ObjIsTravIdCurrent(pAig, pObj) ) - continue; - Lit = toLitCond( Aig_ObjPioNum(pObj) - Saig_ManPiNum(pAig), (Vec_IntEntry(vCiVals, i) == 0) ); - Vec_IntPush( vRes, Lit ); - } - if ( Vec_IntSize(vRes) == 0 ) - Vec_IntPush(vRes, 0); -} - -/**Function************************************************************* - - Synopsis [Derives the resulting cube.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_ManPrintCex( Aig_Man_t * pAig, Vec_Int_t * vCiObjs, Vec_Int_t * vCiVals, Vec_Int_t * vCi2Rem ) -{ - Aig_Obj_t * pObj; - int i; - char * pBuff = ABC_ALLOC( char, Aig_ManPiNum(pAig)+1 ); - for ( i = 0; i < Aig_ManPiNum(pAig); i++ ) - pBuff[i] = '-'; - pBuff[i] = 0; - Aig_ManForEachObjVec( vCiObjs, pAig, pObj, i ) - pBuff[Aig_ObjPioNum(pObj)] = (Vec_IntEntry(vCiVals, i)? '1':'0'); - if ( vCi2Rem ) - Aig_ManForEachObjVec( vCi2Rem, pAig, pObj, i ) - pBuff[Aig_ObjPioNum(pObj)] = 'x'; - printf( "%s\n", pBuff ); - ABC_FREE( pBuff ); -} - -/**Function************************************************************* - - Synopsis [Shrinks values using ternary simulation.] - - Description [The cube contains the set of flop index literals which, - when converted into a clause and applied to the combinational outputs, - led to a satisfiable SAT run in frame k (values stored in the SAT solver). - If the cube is NULL, it is assumed that the first property output was - asserted and failed. - The resulting array is a set of flop index literals that asserts the COs. - Priority contains 0 for i-th entry if the i-th FF is desirable to remove.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_ManTernarySim( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ) -{ - Vec_Int_t * vPrio = p->vPrio; // priority flops (flop indices) - Vec_Int_t * vPiLits = p->vLits; // array of literals (0/1 PI values) - Vec_Int_t * vCiObjs = p->vCiObjs; // cone leaves (CI obj IDs) - Vec_Int_t * vCoObjs = p->vCoObjs; // cone roots (CO obj IDs) - Vec_Int_t * vCiVals = p->vCiVals; // cone leaf values (0/1 CI values) - Vec_Int_t * vCoVals = p->vCoVals; // cone root values (0/1 CO values) - Vec_Int_t * vNodes = p->vNodes; // cone nodes (node obj IDs) - Vec_Int_t * vUndo = p->vUndo; // cone undos (node obj IDs) - Vec_Int_t * vVisits = p->vVisits; // intermediate (obj IDs) - Vec_Int_t * vCi2Rem = p->vCi2Rem; // CIs to be removed (CI obj IDs) - Vec_Int_t * vRes = p->vRes; // final result (flop literals) - Aig_Obj_t * pObj; - int i, Entry, RetValue; - int clk = clock(); - - // collect CO objects - Vec_IntClear( vCoObjs ); - if ( pCube == NULL ) // the target is the property output - Vec_IntPush( vCoObjs, Aig_ObjId(Aig_ManPo(p->pAig, (p->pPars->iOutput==-1)?0:p->pPars->iOutput)) ); - else // the target is the cube - { - for ( i = 0; i < pCube->nLits; i++ ) - { - if ( pCube->Lits[i] == -1 ) - continue; - pObj = Saig_ManLi(p->pAig, (pCube->Lits[i] >> 1)); - Vec_IntPush( vCoObjs, Aig_ObjId(pObj) ); - } - } -if ( p->pPars->fVeryVerbose ) -{ -printf( "Trying to justify cube " ); -if ( pCube ) - Pdr_SetPrint( stdout, pCube, Aig_ManRegNum(p->pAig), NULL ); -else - printf( "<prop=fail>" ); -printf( " in frame %d.\n", k ); -} - - // collect CI objects - Pdr_ManCollectCone( p->pAig, vCoObjs, vCiObjs, vNodes ); - // collect values - Pdr_ManCollectValues( p, k, vCiObjs, vCiVals ); - Pdr_ManCollectValues( p, k, vCoObjs, vCoVals ); - // simulate for the first time -if ( p->pPars->fVeryVerbose ) -Pdr_ManPrintCex( p->pAig, vCiObjs, vCiVals, NULL ); - RetValue = Pdr_ManSimDataInit( p->pAig, vCiObjs, vCiVals, vNodes, vCoObjs, vCoVals, NULL ); - assert( RetValue ); - - // try removing high-priority flops - Vec_IntClear( vCi2Rem ); - Aig_ManForEachObjVec( vCiObjs, p->pAig, pObj, i ) - { - if ( !Saig_ObjIsLo( p->pAig, pObj ) ) - continue; - Entry = Aig_ObjPioNum(pObj) - Saig_ManPiNum(p->pAig); - if ( vPrio != NULL && Vec_IntEntry( vPrio, Entry ) != 0 ) - continue; - Vec_IntClear( vUndo ); - if ( Pdr_ManExtendOne( p->pAig, pObj, vUndo, vVisits ) ) - Vec_IntPush( vCi2Rem, Aig_ObjId(pObj) ); - else - Pdr_ManExtendUndo( p->pAig, vUndo ); - } - // try removing low-priority flops - Aig_ManForEachObjVec( vCiObjs, p->pAig, pObj, i ) - { - if ( !Saig_ObjIsLo( p->pAig, pObj ) ) - continue; - Entry = Aig_ObjPioNum(pObj) - Saig_ManPiNum(p->pAig); - if ( vPrio == NULL || Vec_IntEntry( vPrio, Entry ) == 0 ) - continue; - Vec_IntClear( vUndo ); - if ( Pdr_ManExtendOne( p->pAig, pObj, vUndo, vVisits ) ) - Vec_IntPush( vCi2Rem, Aig_ObjId(pObj) ); - else - Pdr_ManExtendUndo( p->pAig, vUndo ); - } -if ( p->pPars->fVeryVerbose ) -Pdr_ManPrintCex( p->pAig, vCiObjs, vCiVals, vCi2Rem ); - RetValue = Pdr_ManSimDataInit( p->pAig, vCiObjs, vCiVals, vNodes, vCoObjs, vCoVals, vCi2Rem ); - assert( RetValue ); - - // derive the set of resulting registers - Pdr_ManDeriveResult( p->pAig, vCiObjs, vCiVals, vCi2Rem, vRes, vPiLits ); - assert( Vec_IntSize(vRes) > 0 ); - p->tTsim += clock() - clk; - return Pdr_SetCreate( vRes, vPiLits ); -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/pdr/pdrUtil.c b/src/sat/pdr/pdrUtil.c deleted file mode 100644 index 1107aec7..00000000 --- a/src/sat/pdr/pdrUtil.c +++ /dev/null @@ -1,719 +0,0 @@ -/**CFile**************************************************************** - - FileName [pdrUtil.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Property driven reachability.] - - Synopsis [Various utilities.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - November 20, 2010.] - - Revision [$Id: pdrUtil.c,v 1.00 2010/11/20 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "pdrInt.h" - -ABC_NAMESPACE_IMPL_START - - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_SetAlloc( int nSize ) -{ - Pdr_Set_t * p; - assert( nSize >= 0 && nSize < (1<<30) ); - p = (Pdr_Set_t *)ABC_CALLOC( char, sizeof(Pdr_Set_t) + nSize * sizeof(int) ); - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_SetCreate( Vec_Int_t * vLits, Vec_Int_t * vPiLits ) -{ - Pdr_Set_t * p; - int i; - assert( Vec_IntSize(vLits) + Vec_IntSize(vPiLits) < (1<<30) ); - p = (Pdr_Set_t *)ABC_ALLOC( char, sizeof(Pdr_Set_t) + (Vec_IntSize(vLits) + Vec_IntSize(vPiLits)) * sizeof(int) ); - p->nLits = Vec_IntSize(vLits); - p->nTotal = Vec_IntSize(vLits) + Vec_IntSize(vPiLits); - p->nRefs = 1; - p->Sign = 0; - for ( i = 0; i < p->nLits; i++ ) - { - p->Lits[i] = Vec_IntEntry(vLits, i); - p->Sign |= ((word)1 << (p->Lits[i] % 63)); - } - Vec_IntSelectSort( p->Lits, p->nLits ); -/* - for ( i = 0; i < p->nLits; i++ ) - printf( "%d ", p->Lits[i] ); - printf( "\n" ); -*/ - // remember PI literals - for ( i = p->nLits; i < p->nTotal; i++ ) - p->Lits[i] = Vec_IntEntry(vPiLits, i-p->nLits); - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_SetCreateFrom( Pdr_Set_t * pSet, int iRemove ) -{ - Pdr_Set_t * p; - int i, k = 0; - assert( iRemove >= 0 && iRemove < pSet->nLits ); - p = (Pdr_Set_t *)ABC_ALLOC( char, sizeof(Pdr_Set_t) + (pSet->nTotal - 1) * sizeof(int) ); - p->nLits = pSet->nLits - 1; - p->nTotal = pSet->nTotal - 1; - p->nRefs = 1; - p->Sign = 0; - for ( i = 0; i < pSet->nTotal; i++ ) - { - if ( i == iRemove ) - continue; - p->Lits[k++] = pSet->Lits[i]; - if ( i >= pSet->nLits ) - continue; - p->Sign |= ((word)1 << (pSet->Lits[i] % 63)); - } - assert( k == p->nTotal ); - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_SetCreateSubset( Pdr_Set_t * pSet, int * pLits, int nLits ) -{ - Pdr_Set_t * p; - int i, k = 0; - assert( nLits >= 0 && nLits <= pSet->nLits ); - p = (Pdr_Set_t *)ABC_ALLOC( char, sizeof(Pdr_Set_t) + (nLits + pSet->nTotal - pSet->nLits) * sizeof(int) ); - p->nLits = nLits; - p->nTotal = nLits + pSet->nTotal - pSet->nLits; - p->nRefs = 1; - p->Sign = 0; - for ( i = 0; i < nLits; i++ ) - { - assert( pLits[i] >= 0 ); - p->Lits[k++] = pLits[i]; - p->Sign |= ((word)1 << (pLits[i] % 63)); - } - Vec_IntSelectSort( p->Lits, p->nLits ); - for ( i = pSet->nLits; i < pSet->nTotal; i++ ) - p->Lits[k++] = pSet->Lits[i]; - assert( k == p->nTotal ); - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_SetDup( Pdr_Set_t * pSet ) -{ - Pdr_Set_t * p; - int i; - p = (Pdr_Set_t *)ABC_ALLOC( char, sizeof(Pdr_Set_t) + pSet->nTotal * sizeof(int) ); - p->nLits = pSet->nLits; - p->nTotal = pSet->nTotal; - p->nRefs = 1; - p->Sign = pSet->Sign; - for ( i = 0; i < pSet->nTotal; i++ ) - p->Lits[i] = pSet->Lits[i]; - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Set_t * Pdr_SetRef( Pdr_Set_t * p ) -{ - p->nRefs++; - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_SetDeref( Pdr_Set_t * p ) -{ - if ( --p->nRefs == 0 ) - ABC_FREE( p ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_SetPrint( FILE * pFile, Pdr_Set_t * p, int nRegs, Vec_Int_t * vFlopCounts ) -{ - char * pBuff; - int i, k, Entry; - pBuff = ABC_ALLOC( char, nRegs + 1 ); - for ( i = 0; i < nRegs; i++ ) - pBuff[i] = '-'; - pBuff[i] = 0; - for ( i = 0; i < p->nLits; i++ ) - { - if ( p->Lits[i] == -1 ) - continue; - pBuff[lit_var(p->Lits[i])] = (lit_sign(p->Lits[i])? '0':'1'); - } - if ( vFlopCounts ) - { - // skip some literals - k = 0; - Vec_IntForEachEntry( vFlopCounts, Entry, i ) - if ( Entry ) - pBuff[k++] = pBuff[i]; - pBuff[k] = 0; - } - fprintf( pFile, "%s", pBuff ); - ABC_FREE( pBuff ); -} - -/**Function************************************************************* - - Synopsis [Return 1 if pOld set-theoretically contains pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_SetContains( Pdr_Set_t * pOld, Pdr_Set_t * pNew ) -{ - int * pOldInt, * pNewInt; - assert( pOld->nLits > 0 ); - assert( pNew->nLits > 0 ); - if ( pOld->nLits < pNew->nLits ) - return 0; - if ( (pOld->Sign & pNew->Sign) != pNew->Sign ) - return 0; - pOldInt = pOld->Lits + pOld->nLits - 1; - pNewInt = pNew->Lits + pNew->nLits - 1; - while ( pNew->Lits <= pNewInt ) - { - if ( pOld->Lits > pOldInt ) - return 0; - assert( *pNewInt != -1 ); - assert( *pOldInt != -1 ); - if ( *pNewInt == *pOldInt ) - pNewInt--, pOldInt--; - else if ( *pNewInt < *pOldInt ) - pOldInt--; - else - return 0; - } - return 1; -} - -/**Function************************************************************* - - Synopsis [Return 1 if pOld set-theoretically contains pNew.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_SetContainsSimple( Pdr_Set_t * pOld, Pdr_Set_t * pNew ) -{ - int * pOldInt, * pNewInt; - assert( pOld->nLits > 0 ); - assert( pNew->nLits > 0 ); - pOldInt = pOld->Lits + pOld->nLits - 1; - pNewInt = pNew->Lits + pNew->nLits - 1; - while ( pNew->Lits <= pNewInt ) - { - assert( *pOldInt != -1 ); - if ( *pNewInt == -1 ) - { - pNewInt--; - continue; - } - if ( pOld->Lits > pOldInt ) - return 0; - assert( *pNewInt != -1 ); - assert( *pOldInt != -1 ); - if ( *pNewInt == *pOldInt ) - pNewInt--, pOldInt--; - else if ( *pNewInt < *pOldInt ) - pOldInt--; - else - return 0; - } - return 1; -} - -/**Function************************************************************* - - Synopsis [Return 1 if the state cube contains init state (000...0).] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_SetIsInit( Pdr_Set_t * pCube, int iRemove ) -{ - int i; - for ( i = 0; i < pCube->nLits; i++ ) - { - assert( pCube->Lits[i] != -1 ); - if ( i == iRemove ) - continue; - if ( lit_sign( pCube->Lits[i] ) == 0 ) - return 0; - } - return 1; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_SetCompare( Pdr_Set_t ** pp1, Pdr_Set_t ** pp2 ) -{ - Pdr_Set_t * p1 = *pp1; - Pdr_Set_t * p2 = *pp2; - int i; - for ( i = 0; i < p1->nLits && i < p2->nLits; i++ ) - { - if ( p1->Lits[i] > p2->Lits[i] ) - return -1; - if ( p1->Lits[i] < p2->Lits[i] ) - return 1; - } - if ( i == p1->nLits && i < p2->nLits ) - return -1; - if ( i < p1->nLits && i == p2->nLits ) - return 1; - return 0; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Obl_t * Pdr_OblStart( int k, int prio, Pdr_Set_t * pState, Pdr_Obl_t * pNext ) -{ - Pdr_Obl_t * p; - p = ABC_ALLOC( Pdr_Obl_t, 1 ); - p->iFrame = k; - p->prio = prio; - p->nRefs = 1; - p->pState = pState; - p->pNext = pNext; - p->pLink = NULL; - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Obl_t * Pdr_OblRef( Pdr_Obl_t * p ) -{ - p->nRefs++; - return p; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_OblDeref( Pdr_Obl_t * p ) -{ - if ( --p->nRefs == 0 ) - { - if ( p->pNext ) - Pdr_OblDeref( p->pNext ); - Pdr_SetDeref( p->pState ); - ABC_FREE( p ); - } -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_QueueIsEmpty( Pdr_Man_t * p ) -{ - return p->pQueue == NULL; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Obl_t * Pdr_QueueHead( Pdr_Man_t * p ) -{ - return p->pQueue; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Pdr_Obl_t * Pdr_QueuePop( Pdr_Man_t * p ) -{ - Pdr_Obl_t * pRes = p->pQueue; - if ( p->pQueue == NULL ) - return NULL; - p->pQueue = p->pQueue->pLink; - Pdr_OblDeref( pRes ); - return pRes; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_QueuePush( Pdr_Man_t * p, Pdr_Obl_t * pObl ) -{ - Pdr_Obl_t * pTemp, ** ppPrev; - p->nObligs++; - Pdr_OblRef( pObl ); - if ( p->pQueue == NULL ) - { - p->pQueue = pObl; - return; - } - for ( ppPrev = &p->pQueue, pTemp = p->pQueue; pTemp; ppPrev = &pTemp->pLink, pTemp = pTemp->pLink ) - if ( pTemp->iFrame > pObl->iFrame || (pTemp->iFrame == pObl->iFrame && pTemp->prio > pObl->prio) ) - break; - *ppPrev = pObl; - pObl->pLink = pTemp; -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_QueuePrint( Pdr_Man_t * p ) -{ - Pdr_Obl_t * pObl; - for ( pObl = p->pQueue; pObl; pObl = pObl->pLink ) - printf( "Frame = %2d. Prio = %8d.\n", pObl->iFrame, pObl->prio ); -} - -/**Function************************************************************* - - Synopsis [] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Pdr_QueueStop( Pdr_Man_t * p ) -{ - Pdr_Obl_t * pObl; - while ( !Pdr_QueueIsEmpty(p) ) - { - pObl = Pdr_QueuePop(p); - Pdr_OblDeref( pObl ); - } - p->pQueue = NULL; -} - - -#define PDR_VAL0 1 -#define PDR_VAL1 2 -#define PDR_VALX 3 - -/**Function************************************************************* - - Synopsis [Returns value (0 or 1) or X if unassigned.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -static inline int Pdr_ObjSatValue( Aig_Man_t * pAig, Aig_Obj_t * pNode, int fCompl ) -{ - if ( Aig_ObjIsTravIdCurrent(pAig, pNode) ) - return (pNode->fMarkA ^ fCompl) ? PDR_VAL1 : PDR_VAL0; - return PDR_VALX; -} - -/**Function************************************************************* - - Synopsis [Recursively searched for a satisfying assignment.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_NtkFindSatAssign_rec( Aig_Man_t * pAig, Aig_Obj_t * pNode, int Value, Pdr_Set_t * pCube, int Heur ) -{ - int Value0, Value1; - if ( Aig_ObjIsConst1(pNode) ) - return 1; - if ( Aig_ObjIsTravIdCurrent(pAig, pNode) ) - return ((int)pNode->fMarkA == Value); - Aig_ObjSetTravIdCurrent(pAig, pNode); - pNode->fMarkA = Value; - if ( Aig_ObjIsPi(pNode) ) - { -// if ( vSuppLits ) -// Vec_IntPush( vSuppLits, Aig_Var2Lit( Aig_ObjPioNum(pNode), !Value ) ); - if ( Saig_ObjIsLo(pAig, pNode) ) - { -// pCube->Lits[pCube->nLits++] = Aig_Var2Lit( Aig_ObjPioNum(pNode) - Saig_ManPiNum(pAig), !Value ); - pCube->Lits[pCube->nLits++] = Aig_Var2Lit( Aig_ObjPioNum(pNode) - Saig_ManPiNum(pAig), Value ); - pCube->Sign |= ((word)1 << (pCube->Lits[pCube->nLits-1] % 63)); - } - return 1; - } - assert( Aig_ObjIsNode(pNode) ); - // propagation - if ( Value ) - { - if ( !Pdr_NtkFindSatAssign_rec(pAig, Aig_ObjFanin0(pNode), !Aig_ObjFaninC0(pNode), pCube, Heur) ) - return 0; - return Pdr_NtkFindSatAssign_rec(pAig, Aig_ObjFanin1(pNode), !Aig_ObjFaninC1(pNode), pCube, Heur); - } - // justification - Value0 = Pdr_ObjSatValue( pAig, Aig_ObjFanin0(pNode), Aig_ObjFaninC0(pNode) ); - if ( Value0 == PDR_VAL0 ) - return 1; - Value1 = Pdr_ObjSatValue( pAig, Aig_ObjFanin1(pNode), Aig_ObjFaninC1(pNode) ); - if ( Value1 == PDR_VAL0 ) - return 1; - if ( Value0 == PDR_VAL1 && Value1 == PDR_VAL1 ) - return 0; - if ( Value0 == PDR_VAL1 ) - return Pdr_NtkFindSatAssign_rec(pAig, Aig_ObjFanin1(pNode), Aig_ObjFaninC1(pNode), pCube, Heur); - if ( Value1 == PDR_VAL1 ) - return Pdr_NtkFindSatAssign_rec(pAig, Aig_ObjFanin0(pNode), Aig_ObjFaninC0(pNode), pCube, Heur); - assert( Value0 == PDR_VALX && Value1 == PDR_VALX ); - // decision making -// if ( rand() % 10 == Heur ) - if ( Aig_ObjId(pNode) % 4 == Heur ) - return Pdr_NtkFindSatAssign_rec(pAig, Aig_ObjFanin1(pNode), Aig_ObjFaninC1(pNode), pCube, Heur); - else - return Pdr_NtkFindSatAssign_rec(pAig, Aig_ObjFanin0(pNode), Aig_ObjFaninC0(pNode), pCube, Heur); -} - -/**Function************************************************************* - - Synopsis [Returns 1 if SAT assignment is found; 0 otherwise.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Pdr_ManCubeJust( Pdr_Man_t * p, int k, Pdr_Set_t * pCube ) -{ - Aig_Obj_t * pNode; - int i, v, fCompl; -// return 0; - for ( i = 0; i < 4; i++ ) - { - // derive new assignment - p->pCubeJust->nLits = 0; - p->pCubeJust->Sign = 0; - Aig_ManIncrementTravId( p->pAig ); - for ( v = 0; v < pCube->nLits; v++ ) - { - if ( pCube->Lits[v] == -1 ) - continue; - pNode = Saig_ManLi( p->pAig, lit_var(pCube->Lits[v]) ); - fCompl = lit_sign(pCube->Lits[v]) ^ Aig_ObjFaninC0(pNode); - if ( !Pdr_NtkFindSatAssign_rec( p->pAig, Aig_ObjFanin0(pNode), !fCompl, p->pCubeJust, i ) ) - break; - } - if ( v < pCube->nLits ) - continue; - // figure this out!!! - if ( p->pCubeJust->nLits == 0 ) - continue; - // successfully derived new assignment - Vec_IntSelectSort( p->pCubeJust->Lits, p->pCubeJust->nLits ); - // check assignment against this cube - if ( Pdr_SetContainsSimple( p->pCubeJust, pCube ) ) - continue; -//printf( "\n" ); -//Pdr_SetPrint( stdout, pCube, Saig_ManRegNum(p->pAig), NULL ); printf( "\n" ); -//Pdr_SetPrint( stdout, p->pCubeJust, Saig_ManRegNum(p->pAig), NULL ); printf( "\n" ); - // check assignment against the clauses - if ( Pdr_ManCheckContainment( p, k, p->pCubeJust ) ) - continue; - // find good assignment - return 1; - } - return 0; -} - - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - -ABC_NAMESPACE_IMPL_END - diff --git a/src/sat/proof/pr.c b/src/sat/proof/pr.c index 0da16eaf..45bc2e33 100644 --- a/src/sat/proof/pr.c +++ b/src/sat/proof/pr.c @@ -25,7 +25,7 @@ #include <time.h> //#include "vec.h" -#include "abc_global.h" +#include "src/misc/util/abc_global.h" #include "pr.h" ABC_NAMESPACE_IMPL_START diff --git a/src/sat/proof/pr.h b/src/sat/proof/pr.h index 9088c89b..b060b52b 100644 --- a/src/sat/proof/pr.h +++ b/src/sat/proof/pr.h @@ -18,8 +18,8 @@ ***********************************************************************/ -#ifndef __PR_H__ -#define __PR_H__ +#ifndef ABC__sat__proof__pr_h +#define ABC__sat__proof__pr_h #ifdef _WIN32 diff --git a/src/sat/psat/m114p.h b/src/sat/psat/m114p.h index 9319d918..12f98135 100644 --- a/src/sat/psat/m114p.h +++ b/src/sat/psat/m114p.h @@ -1,7 +1,7 @@ // C-language header for MiniSat 1.14p -#ifndef m114p_h -#define m114p_h +#ifndef ABC__sat__psat__m114p_h +#define ABC__sat__psat__m114p_h #include "m114p_types.h" diff --git a/src/sat/psat/m114p_types.h b/src/sat/psat/m114p_types.h index 29d70a87..770cd417 100644 --- a/src/sat/psat/m114p_types.h +++ b/src/sat/psat/m114p_types.h @@ -1,7 +1,7 @@ // C-language header for MiniSat 1.14p -#ifndef m114p_types_h -#define m114p_types_h +#ifndef ABC__sat__psat__m114p_types_h +#define ABC__sat__psat__m114p_types_h ABC_NAMESPACE_HEADER_START |