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-rw-r--r--src/aig/saig/saig.h1
-rw-r--r--src/aig/saig/saigAbsCba.c27
-rw-r--r--src/aig/saig/saigCexMin.c531
-rw-r--r--src/base/abci/abc.c5
4 files changed, 370 insertions, 194 deletions
diff --git a/src/aig/saig/saig.h b/src/aig/saig/saig.h
index b84bc0a1..4437413f 100644
--- a/src/aig/saig/saig.h
+++ b/src/aig/saig/saig.h
@@ -105,6 +105,7 @@ static inline int Saig_ObjIsLo( Aig_Man_t * p, Aig_Obj_t * pObj ) {
static inline int Saig_ObjIsLi( Aig_Man_t * p, Aig_Obj_t * pObj ) { return Aig_ObjIsPo(pObj) && Aig_ObjPioNum(pObj) >= Saig_ManPoNum(p); }
static inline Aig_Obj_t * Saig_ObjLoToLi( Aig_Man_t * p, Aig_Obj_t * pObj ) { assert(Saig_ObjIsLo(p, pObj)); return (Aig_Obj_t *)Vec_PtrEntry(p->vPos, Saig_ManPoNum(p)+Aig_ObjPioNum(pObj)-Saig_ManPiNum(p)); }
static inline Aig_Obj_t * Saig_ObjLiToLo( Aig_Man_t * p, Aig_Obj_t * pObj ) { assert(Saig_ObjIsLi(p, pObj)); return (Aig_Obj_t *)Vec_PtrEntry(p->vPis, Saig_ManPiNum(p)+Aig_ObjPioNum(pObj)-Saig_ManPoNum(p)); }
+static inline int Saig_ObjRegId( Aig_Man_t * p, Aig_Obj_t * pObj ) { if ( Saig_ObjIsLo(p, pObj) ) return Aig_ObjPioNum(pObj)-Saig_ManPiNum(p); if ( Saig_ObjIsLi(p, pObj) ) return Aig_ObjPioNum(pObj)-Saig_ManPoNum(p); else assert(0); return -1; }
// iterator over the primary inputs/outputs
#define Saig_ManForEachPi( p, pObj, i ) \
diff --git a/src/aig/saig/saigAbsCba.c b/src/aig/saig/saigAbsCba.c
index 66cf5586..78a77ecb 100644
--- a/src/aig/saig/saigAbsCba.c
+++ b/src/aig/saig/saigAbsCba.c
@@ -151,6 +151,16 @@ Abc_Cex_t * Saig_ManCbaReason2Cex( Saig_ManCba_t * p, Vec_Int_t * vReasons )
iFrame = Vec_IntEntry( p->vMapPiF2A, 2*Entry+1 );
Aig_InfoSetBit( pCare->pData, pCare->nRegs + pCare->nPis * iFrame + iInput );
}
+/*
+ for ( iFrame = 0; iFrame <= pCare->iFrame; iFrame++ )
+ {
+ int Count = 0;
+ for ( i = 0; i < pCare->nPis; i++ )
+ Count += Aig_InfoHasBit(pCare->pData, pCare->nRegs + pCare->nPis * iFrame + i);
+ printf( "%d ", Count );
+ }
+printf( "\n" );
+*/
return pCare;
}
@@ -216,28 +226,19 @@ void Saig_ManCbaFindReason_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Int_t * vPr
Vec_Int_t * Saig_ManCbaFindReason( Saig_ManCba_t * p )
{
Aig_Obj_t * pObj;
- Vec_Int_t * vPrios, * vPi2Prio, * vReasons;
- int i, CountPrios;
-
- vPi2Prio = Vec_IntStartFull( Saig_ManPiNum(p->pAig) );
- vPrios = Vec_IntStartFull( Aig_ManObjNumMax(p->pFrames) );
+ Vec_Int_t * vPrios, * vReasons;
+ int i;
// set PI values according to CEX
- CountPrios = 0;
+ vPrios = Vec_IntStartFull( Aig_ManObjNumMax(p->pFrames) );
Aig_ManConst1(p->pFrames)->fPhase = 1;
Aig_ManForEachPi( p->pFrames, pObj, i )
{
int iInput = Vec_IntEntry( p->vMapPiF2A, 2*i );
int iFrame = Vec_IntEntry( p->vMapPiF2A, 2*i+1 );
pObj->fPhase = Aig_InfoHasBit( p->pCex->pData, p->pCex->nRegs + p->pCex->nPis * iFrame + iInput );
- // assign priority
- if ( Vec_IntEntry(vPi2Prio, iInput) == ~0 )
- Vec_IntWriteEntry( vPi2Prio, iInput, CountPrios++ );
-// Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), Vec_IntEntry(vPi2Prio, iInput) );
Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), i );
}
-// printf( "Priority numbers = %d.\n", CountPrios );
- Vec_IntFree( vPi2Prio );
// traverse and set the priority
Aig_ManForEachNode( p->pFrames, pObj, i )
@@ -341,7 +342,9 @@ Aig_Man_t * Saig_ManCbaUnrollWithCex( Aig_Man_t * pAig, Abc_Cex_t * pCex, int nI
Saig_ManCbaUnrollCollect_rec( pAig, pObj,
Vec_VecEntryInt(vFrameObjs, f),
(Vec_Int_t *)(f ? Vec_VecEntry(vFrameCos, f-1) : NULL) );
+//printf( "%d ", Vec_VecLevelSize(vFrameCos, f) );
}
+//printf( "\n" );
// derive unrolled timeframes
pFrames = Aig_ManStart( 10000 );
diff --git a/src/aig/saig/saigCexMin.c b/src/aig/saig/saigCexMin.c
index 5dfcda01..dd88fb70 100644
--- a/src/aig/saig/saigCexMin.c
+++ b/src/aig/saig/saigCexMin.c
@@ -19,6 +19,7 @@
***********************************************************************/
#include "saig.h"
+#include "ioa.h"
ABC_NAMESPACE_IMPL_START
@@ -33,7 +34,7 @@ ABC_NAMESPACE_IMPL_START
/**Function*************************************************************
- Synopsis [Returns reasons for the property to fail.]
+ Synopsis [Find the roots to begin traversal.]
Description []
@@ -42,48 +43,85 @@ ABC_NAMESPACE_IMPL_START
SeeAlso []
***********************************************************************/
-void Saig_ManCexMinFindReason_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Int_t * vPrios, Vec_Int_t * vReasonPis, Vec_Int_t * vReasonLis )
+void Saig_ManCexMinGetCos( Aig_Man_t * pAig, Abc_Cex_t * pCex, Vec_Int_t * vLeaves, Vec_Int_t * vRoots )
{
- if ( Aig_ObjIsTravIdCurrent(p, pObj) )
- return;
- Aig_ObjSetTravIdCurrent(p, pObj);
- if ( Saig_ObjIsPi(p, pObj) )
+ Aig_Obj_t * pObj;
+ int i;
+ Vec_IntClear( vRoots );
+ if ( vLeaves == NULL )
{
- Vec_IntPush( vReasonPis, Aig_ObjPioNum(pObj) );
+ pObj = Aig_ManPo( pAig, pCex->iPo );
+ Vec_IntPush( vRoots, Aig_ObjId(pObj) );
return;
}
- if ( Saig_ObjIsLo(p, pObj) )
- {
- Vec_IntPush( vReasonLis, Aig_ObjPioNum(pObj) - Aig_ManRegNum(p) );
+ Aig_ManForEachObjVec( vLeaves, pAig, pObj, i )
+ if ( Saig_ObjIsLo(pAig, pObj) )
+ Vec_IntPush( vRoots, Aig_ObjId( Saig_ObjLoToLi(pAig, pObj) ) );
+}
+
+/**Function*************************************************************
+
+ Synopsis [Collects CI of the given timeframe.]
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Saig_ManCexMinCollectFrameTerms_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_t * vFrameCisOne )
+{
+ if ( Aig_ObjIsTravIdCurrent(pAig, pObj) )
return;
- }
- assert( Aig_ObjIsNode(pObj) );
- if ( pObj->fPhase )
+ Aig_ObjSetTravIdCurrent(pAig, pObj);
+ if ( Aig_ObjIsPo(pObj) )
+ Saig_ManCexMinCollectFrameTerms_rec( pAig, Aig_ObjFanin0(pObj), vFrameCisOne );
+ else if ( Aig_ObjIsNode(pObj) )
{
- Saig_ManCexMinFindReason_rec( p, Aig_ObjFanin0(pObj), vPrios, vReasonPis, vReasonLis );
- Saig_ManCexMinFindReason_rec( p, Aig_ObjFanin1(pObj), vPrios, vReasonPis, vReasonLis );
+ Saig_ManCexMinCollectFrameTerms_rec( pAig, Aig_ObjFanin0(pObj), vFrameCisOne );
+ Saig_ManCexMinCollectFrameTerms_rec( pAig, Aig_ObjFanin1(pObj), vFrameCisOne );
}
- else
+ else if ( Aig_ObjIsPi(pObj) )
+ Vec_IntPush( vFrameCisOne, Aig_ObjId(pObj) );
+}
+
+/**Function*************************************************************
+
+ Synopsis [Collects CIs of all timeframes.]
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Vec_Vec_t * Saig_ManCexMinCollectFrameTerms( Aig_Man_t * pAig, Abc_Cex_t * pCex )
+{
+ Vec_Vec_t * vFrameCis;
+ Vec_Int_t * vRoots, * vLeaves;
+ Aig_Obj_t * pObj;
+ int i, f;
+ // create terminals
+ vRoots = Vec_IntAlloc( 1000 );
+ vFrameCis = Vec_VecStart( pCex->iFrame+1 );
+ for ( f = pCex->iFrame; f >= 0; f-- )
{
- int fPhase0 = Aig_ObjFaninC0(pObj) ^ Aig_ObjFanin0(pObj)->fPhase;
- int fPhase1 = Aig_ObjFaninC1(pObj) ^ Aig_ObjFanin1(pObj)->fPhase;
- assert( !fPhase0 || !fPhase1 );
- if ( !fPhase0 && fPhase1 )
- Saig_ManCexMinFindReason_rec( p, Aig_ObjFanin0(pObj), vPrios, vReasonPis, vReasonLis );
- else if ( fPhase0 && !fPhase1 )
- Saig_ManCexMinFindReason_rec( p, Aig_ObjFanin1(pObj), vPrios, vReasonPis, vReasonLis );
- else
- {
- int iPrio0 = Vec_IntEntry( vPrios, Aig_ObjFaninId0(pObj) );
- int iPrio1 = Vec_IntEntry( vPrios, Aig_ObjFaninId1(pObj) );
- if ( iPrio0 >= iPrio1 )
- Saig_ManCexMinFindReason_rec( p, Aig_ObjFanin0(pObj), vPrios, vReasonPis, vReasonLis );
- else
- Saig_ManCexMinFindReason_rec( p, Aig_ObjFanin1(pObj), vPrios, vReasonPis, vReasonLis );
- }
+ // create roots
+ vLeaves = (f == pCex->iFrame) ? NULL : Vec_VecEntryInt(vFrameCis, f+1);
+ Saig_ManCexMinGetCos( pAig, pCex, vLeaves, vRoots );
+ // collect nodes starting from the roots
+ Aig_ManIncrementTravId( pAig );
+ Aig_ManForEachObjVec( vRoots, pAig, pObj, i )
+ Saig_ManCexMinCollectFrameTerms_rec( pAig, pObj, Vec_VecEntryInt(vFrameCis, f) );
}
+ Vec_IntFree( vRoots );
+ return vFrameCis;
}
+
+
/**Function*************************************************************
Synopsis [Recursively sets phase and priority.]
@@ -95,41 +133,42 @@ void Saig_ManCexMinFindReason_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Int_t *
SeeAlso []
***********************************************************************/
-void Saig_ManCexMinComputePrio_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_t * vPrios )
+void Saig_ManCexMinDerivePhasePriority_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj )
{
if ( Aig_ObjIsTravIdCurrent(pAig, pObj) )
return;
Aig_ObjSetTravIdCurrent(pAig, pObj);
if ( Aig_ObjIsPo(pObj) )
{
- Saig_ManCexMinComputePrio_rec( pAig, Aig_ObjFanin0(pObj), vPrios );
- pObj->fPhase = Aig_ObjFaninC0(pObj) ^ Aig_ObjFanin0(pObj)->fPhase;
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), Vec_IntEntry( vPrios, Aig_ObjFaninId0(pObj) ) );
+ Saig_ManCexMinDerivePhasePriority_rec( pAig, Aig_ObjFanin0(pObj) );
+ assert( Aig_ObjFanin0(pObj)->iData >= 0 );
+ pObj->iData = Aig_ObjFanin0(pObj)->iData ^ Aig_ObjFaninC0(pObj);
}
else if ( Aig_ObjIsNode(pObj) )
{
int fPhase0, fPhase1, iPrio0, iPrio1;
- Saig_ManCexMinComputePrio_rec( pAig, Aig_ObjFanin0(pObj), vPrios );
- Saig_ManCexMinComputePrio_rec( pAig, Aig_ObjFanin1(pObj), vPrios );
- fPhase0 = Aig_ObjFaninC0(pObj) ^ Aig_ObjFanin0(pObj)->fPhase;
- fPhase1 = Aig_ObjFaninC1(pObj) ^ Aig_ObjFanin1(pObj)->fPhase;
- iPrio0 = Vec_IntEntry( vPrios, Aig_ObjFaninId0(pObj) );
- iPrio1 = Vec_IntEntry( vPrios, Aig_ObjFaninId1(pObj) );
- pObj->fPhase = fPhase0 && fPhase1;
+ Saig_ManCexMinDerivePhasePriority_rec( pAig, Aig_ObjFanin0(pObj) );
+ Saig_ManCexMinDerivePhasePriority_rec( pAig, Aig_ObjFanin1(pObj) );
+ assert( Aig_ObjFanin0(pObj)->iData >= 0 );
+ assert( Aig_ObjFanin1(pObj)->iData >= 0 );
+ fPhase0 = Aig_LitIsCompl( Aig_ObjFanin0(pObj)->iData ) ^ Aig_ObjFaninC0(pObj);
+ fPhase1 = Aig_LitIsCompl( Aig_ObjFanin1(pObj)->iData ) ^ Aig_ObjFaninC1(pObj);
+ iPrio0 = Aig_Lit2Var( Aig_ObjFanin0(pObj)->iData );
+ iPrio1 = Aig_Lit2Var( Aig_ObjFanin1(pObj)->iData );
if ( fPhase0 && fPhase1 ) // both are one
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), Abc_MinInt(iPrio0, iPrio1) );
+ pObj->iData = Aig_Var2Lit( Abc_MinInt(iPrio0, iPrio1), 1 );
else if ( !fPhase0 && fPhase1 )
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), iPrio0 );
+ pObj->iData = Aig_Var2Lit( iPrio0, 0 );
else if ( fPhase0 && !fPhase1 )
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), iPrio1 );
+ pObj->iData = Aig_Var2Lit( iPrio1, 0 );
else // both are zero
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), Abc_MaxInt(iPrio0, iPrio1) );
+ pObj->iData = Aig_Var2Lit( Abc_MaxInt(iPrio0, iPrio1), 0 );
}
}
/**Function*************************************************************
- Synopsis [Collect nodes in the unrolled timeframes.]
+ Synopsis [Verify phase.]
Description []
@@ -138,27 +177,33 @@ void Saig_ManCexMinComputePrio_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_
SeeAlso []
***********************************************************************/
-void Saig_ManCollectFrameTerms_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_t * vFramePis, Vec_Int_t * vFrameLis )
+void Saig_ManCexMinVerifyPhase( Aig_Man_t * pAig, Abc_Cex_t * pCex, int f )
{
- if ( Aig_ObjIsTravIdCurrent(pAig, pObj) )
- return;
- Aig_ObjSetTravIdCurrent(pAig, pObj);
- if ( Aig_ObjIsPo(pObj) )
- Saig_ManCollectFrameTerms_rec( pAig, Aig_ObjFanin0(pObj), vFramePis, vFrameLis );
- else if ( Aig_ObjIsNode(pObj) )
+ Aig_Obj_t * pObj;
+ int i;
+ Aig_ManConst1(pAig)->fPhase = 1;
+ Saig_ManForEachPi( pAig, pObj, i )
+ pObj->fPhase = Aig_InfoHasBit(pCex->pData, pCex->nRegs + f * pCex->nPis + i);
+ if ( f == 0 )
{
- Saig_ManCollectFrameTerms_rec( pAig, Aig_ObjFanin0(pObj), vFramePis, vFrameLis );
- Saig_ManCollectFrameTerms_rec( pAig, Aig_ObjFanin1(pObj), vFramePis, vFrameLis );
+ Saig_ManForEachLo( pAig, pObj, i )
+ pObj->fPhase = 0;
}
- if ( Saig_ObjIsPi( pAig, pObj ) )
- Vec_IntPush( vFramePis, Aig_ObjId(pObj) );
- if ( vFrameLis && Saig_ObjIsLo( pAig, pObj ) )
- Vec_IntPush( vFrameLis, Aig_ObjId( Saig_ObjLoToLi(pAig, pObj) ) );
+ else
+ {
+ Saig_ManForEachLo( pAig, pObj, i )
+ pObj->fPhase = Saig_ObjLoToLi(pAig, pObj)->fPhase;
+ }
+ Aig_ManForEachNode( pAig, pObj, i )
+ pObj->fPhase = (Aig_ObjFaninC0(pObj) ^ Aig_ObjFanin0(pObj)->fPhase) &
+ (Aig_ObjFaninC1(pObj) ^ Aig_ObjFanin1(pObj)->fPhase);
+ Aig_ManForEachPo( pAig, pObj, i )
+ pObj->fPhase = (Aig_ObjFaninC0(pObj) ^ Aig_ObjFanin0(pObj)->fPhase);
}
/**Function*************************************************************
- Synopsis [Derive unrolled timeframes.]
+ Synopsis [Collects phase and priority of all timeframes.]
Description []
@@ -167,79 +212,162 @@ void Saig_ManCollectFrameTerms_rec( Aig_Man_t * pAig, Aig_Obj_t * pObj, Vec_Int_
SeeAlso []
***********************************************************************/
-void Saig_ManCollectFrameTerms( Aig_Man_t * pAig, Abc_Cex_t * pCex, Vec_Vec_t * vFramePis, Vec_Vec_t * vFrameLis )
+void Saig_ManCexMinDerivePhasePriority( Aig_Man_t * pAig, Abc_Cex_t * pCex, Vec_Vec_t * vFrameCis, Vec_Vec_t * vFramePPs, int f, Vec_Int_t * vRoots )
{
+ Vec_Int_t * vFramePPsOne, * vFrameCisOne, * vLeaves;
Aig_Obj_t * pObj;
- int i, f, Entry;
- // sanity checks
- assert( Saig_ManPiNum(pAig) == pCex->nPis );
- assert( Saig_ManRegNum(pAig) == pCex->nRegs );
- assert( pCex->iPo >= 0 && pCex->iPo < Saig_ManPoNum(pAig) );
- // initialized the topmost frame
- pObj = Aig_ManPo( pAig, pCex->iPo );
- Vec_VecPushInt( vFrameLis, pCex->iFrame, Aig_ObjId(pObj) );
- for ( f = pCex->iFrame; f >= 0; f-- )
+ int i;
+ // set PP for the CIs
+ vFrameCisOne = Vec_VecEntryInt( vFrameCis, f );
+ vFramePPsOne = Vec_VecEntryInt( vFramePPs, f );
+ Aig_ManForEachObjVec( vFrameCisOne, pAig, pObj, i )
{
- // collect nodes starting from the roots
- Aig_ManIncrementTravId( pAig );
- Vec_VecForEachEntryIntLevel( vFrameLis, Entry, i, f )
- Saig_ManCollectFrameTerms_rec( pAig, Aig_ManObj(pAig, Entry),
- Vec_VecEntryInt( vFramePis, f ),
- (Vec_Int_t *)(f ? Vec_VecEntry( vFrameLis, f-1 ) : NULL) );
+ pObj->iData = Vec_IntEntry( vFramePPsOne, i );
+ assert( pObj->iData >= 0 );
+ }
+// if ( f == 0 )
+// Saig_ManCexMinVerifyPhase( pAig, pCex, f );
+
+ // create roots
+ vLeaves = (f == pCex->iFrame) ? NULL : Vec_VecEntryInt(vFrameCis, f+1);
+ Saig_ManCexMinGetCos( pAig, pCex, vLeaves, vRoots );
+ // derive for the nodes starting from the roots
+ Aig_ManIncrementTravId( pAig );
+ Aig_ManForEachObjVec( vRoots, pAig, pObj, i )
+ {
+ Saig_ManCexMinDerivePhasePriority_rec( pAig, pObj );
+// if ( f == 0 )
+// assert( (pObj->iData & 1) == pObj->fPhase );
}
}
/**Function*************************************************************
- Synopsis []
+ Synopsis [Collects phase and priority of all timeframes.]
Description []
SideEffects []
SeeAlso []
-
+
***********************************************************************/
-void Saig_ManCexMinPhasePriority( Aig_Man_t * pAig, Abc_Cex_t * pCex, int f,
- Vec_Vec_t * vFramePis, Vec_Vec_t * vFrameLis, Vec_Vec_t * vPrioPis, Vec_Vec_t * vPrioLis, Vec_Vec_t * vPhaseLis, Vec_Int_t * vPrios )
+Vec_Vec_t * Saig_ManCexMinCollectPhasePriority( Aig_Man_t * pAig, Abc_Cex_t * pCex, Vec_Vec_t * vFrameCis )
{
+ Vec_Vec_t * vFramePPs;
+ Vec_Int_t * vRoots, * vFramePPsOne, * vFrameCisOne;
Aig_Obj_t * pObj;
- int i, Entry;
- // set PI priority for this frame
- Vec_VecForEachEntryIntLevel( vFramePis, Entry, i, f )
+ int i, f, nPrioOffset;
+
+ // initialize phase and priority
+ Aig_ManForEachObj( pAig, pObj, i )
+ pObj->iData = -1;
+
+ // set the constant node to higher priority than the flops
+ vFramePPs = Vec_VecStart( pCex->iFrame+1 );
+ nPrioOffset = (pCex->iFrame + 1) * pCex->nPis;
+ Aig_ManConst1(pAig)->iData = Aig_Var2Lit( nPrioOffset + pCex->nRegs, 1 );
+ vRoots = Vec_IntAlloc( 1000 );
+//printf( "Const1 = %d Offset = %d\n", Aig_ManConst1(pAig)->iData, nPrioOffset );
+ for ( f = 0; f <= pCex->iFrame; f++ )
+ {
+ int nPiCount = 0;
+ // fill in PP for the CIs
+ vFrameCisOne = Vec_VecEntryInt( vFrameCis, f );
+ vFramePPsOne = Vec_VecEntryInt( vFramePPs, f );
+ assert( Vec_IntSize(vFramePPsOne) == 0 );
+ Aig_ManForEachObjVec( vFrameCisOne, pAig, pObj, i )
+ {
+ assert( Aig_ObjIsPi(pObj) );
+ if ( Saig_ObjIsPi(pAig, pObj) )
+ Vec_IntPush( vFramePPsOne, Aig_Var2Lit( (f+1) * pCex->nPis - nPiCount++, Aig_InfoHasBit(pCex->pData, pCex->nRegs + f * pCex->nPis + Aig_ObjPioNum(pObj)) ) );
+ else if ( f == 0 )
+ Vec_IntPush( vFramePPsOne, Aig_Var2Lit( nPrioOffset + Saig_ObjRegId(pAig, pObj), 0 ) );
+ else
+ {
+ Aig_Obj_t * pObj0 = Saig_ObjLoToLi(pAig, pObj);
+ int Value = Saig_ObjLoToLi(pAig, pObj)->iData;
+ Vec_IntPush( vFramePPsOne, Saig_ObjLoToLi(pAig, pObj)->iData );
+ }
+//printf( "%d ", Vec_IntEntryLast(vFramePPsOne) );
+ }
+//printf( "\n" );
+ // compute the PP info
+ Saig_ManCexMinDerivePhasePriority( pAig, pCex, vFrameCis, vFramePPs, f, vRoots );
+ }
+ Vec_IntFree( vRoots );
+ // check the output
+ pObj = Aig_ManPo( pAig, pCex->iPo );
+ assert( Aig_LitIsCompl(pObj->iData) );
+ return vFramePPs;
+}
+
+
+/**Function*************************************************************
+
+ Synopsis [Returns reasons for the property to fail.]
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Saig_ManCexMinCollectReason_rec( Aig_Man_t * p, Aig_Obj_t * pObj, Vec_Int_t * vReason, int fPiReason )
+{
+ if ( Aig_ObjIsTravIdCurrent(p, pObj) )
+ return;
+ Aig_ObjSetTravIdCurrent(p, pObj);
+ if ( Aig_ObjIsPi(pObj) )
{
- pObj = Aig_ManObj( pAig, Entry );
- pObj->fPhase = Aig_InfoHasBit( pCex->pData, pCex->nRegs + pCex->nPis * f + i );
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), Vec_VecEntryEntryInt(vPrioPis, f, i) );
+ if ( fPiReason && Saig_ObjIsPi(p, pObj) )
+ Vec_IntPush( vReason, Aig_Var2Lit( Aig_ObjPioNum(pObj), !Aig_LitIsCompl(pObj->iData) ) );
+ else if ( !fPiReason && Saig_ObjIsLo(p, pObj) )
+ Vec_IntPush( vReason, Aig_Var2Lit( Saig_ObjRegId(p, pObj), !Aig_LitIsCompl(pObj->iData) ) );
+ return;
}
- // set LO priority for this frame
- if ( f == 0 )
+ if ( Aig_ObjIsPo(pObj) )
{
- int nPiPrioStart = Vec_VecSizeSize(vFramePis);
- Saig_ManForEachLo( pAig, pObj, i )
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), nPiPrioStart + i );
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin0(pObj), vReason, fPiReason );
+ return;
+ }
+ if ( Aig_ObjIsConst1(pObj) )
+ return;
+ assert( Aig_ObjIsNode(pObj) );
+ if ( Aig_LitIsCompl(pObj->iData) ) // value 1
+ {
+ int fPhase0 = Aig_LitIsCompl( Aig_ObjFanin0(pObj)->iData ) ^ Aig_ObjFaninC0(pObj);
+ int fPhase1 = Aig_LitIsCompl( Aig_ObjFanin1(pObj)->iData ) ^ Aig_ObjFaninC1(pObj);
+ assert( fPhase0 && fPhase1 );
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin0(pObj), vReason, fPiReason );
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin1(pObj), vReason, fPiReason );
}
else
{
- Vec_Int_t * vPrioLiOne = Vec_VecEntryInt( vPrioLis, f-1 );
- Vec_Int_t * vPhaseLiOne = Vec_VecEntryInt( vPhaseLis, f-1 );
- Vec_VecForEachEntryIntLevel( vFrameLis, Entry, i, f-1 )
+ int fPhase0 = Aig_LitIsCompl( Aig_ObjFanin0(pObj)->iData ) ^ Aig_ObjFaninC0(pObj);
+ int fPhase1 = Aig_LitIsCompl( Aig_ObjFanin1(pObj)->iData ) ^ Aig_ObjFaninC1(pObj);
+ assert( !fPhase0 || !fPhase1 );
+ if ( !fPhase0 && fPhase1 )
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin0(pObj), vReason, fPiReason );
+ else if ( fPhase0 && !fPhase1 )
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin1(pObj), vReason, fPiReason );
+ else
{
- pObj = Saig_ObjLiToLo( pAig, Aig_ManObj(pAig, Entry) );
- pObj->fPhase = Vec_IntEntry( vPhaseLiOne, i );
- Vec_IntWriteEntry( vPrios, Aig_ObjId(pObj), Vec_IntEntry(vPrioLiOne, i) );
+ int iPrio0 = Aig_Lit2Var( Aig_ObjFanin0(pObj)->iData );
+ int iPrio1 = Aig_Lit2Var( Aig_ObjFanin1(pObj)->iData );
+ if ( iPrio0 >= iPrio1 )
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin0(pObj), vReason, fPiReason );
+ else
+ Saig_ManCexMinCollectReason_rec( p, Aig_ObjFanin1(pObj), vReason, fPiReason );
}
}
- // traverse, set phase and priority for internal nodes
- Aig_ManIncrementTravId( pAig );
- Vec_VecForEachEntryIntLevel( vFrameLis, Entry, i, f )
- Saig_ManCexMinComputePrio_rec( pAig, Aig_ManObj(pAig, Entry), vPrios );
}
/**Function*************************************************************
- Synopsis []
+ Synopsis [Collects phase and priority of all timeframes.]
Description []
@@ -248,77 +376,31 @@ void Saig_ManCexMinPhasePriority( Aig_Man_t * pAig, Abc_Cex_t * pCex, int f,
SeeAlso []
***********************************************************************/
-Abc_Cex_t * Saig_ManCexMinPerform( Aig_Man_t * pAig, Abc_Cex_t * pCex )
+Vec_Vec_t * Saig_ManCexMinCollectReason( Aig_Man_t * pAig, Abc_Cex_t * pCex, Vec_Vec_t * vFrameCis, Vec_Vec_t * vFramePPs, int fPiReason )
{
- Abc_Cex_t * pCexMin = NULL;
+ Vec_Vec_t * vFrameReas;
+ Vec_Int_t * vRoots, * vLeaves;
Aig_Obj_t * pObj;
- Vec_Vec_t * vFramePis, * vFrameLis, * vPrioPis, * vPrioLis, * vPhaseLis, * vReasonPis, * vReasonLis;
- Vec_Int_t * vPrios;
- int f, i, Entry, nPiPrioStart;
-
- // collect PIs and LOs visited in each frame
- vFramePis = Vec_VecStart( pCex->iFrame+1 );
- vFrameLis = Vec_VecStart( pCex->iFrame+1 );
- Saig_ManCollectFrameTerms( pAig, pCex, vFramePis, vFrameLis );
-
- // set priority for the PIs
- nPiPrioStart = 0;
- vPrioPis = Vec_VecStart( pCex->iFrame+1 );
- Vec_VecForEachEntryInt( vFramePis, Entry, f, i )
- Vec_VecPushInt( vPrioPis, f, nPiPrioStart++ );
- assert( nPiPrioStart == Vec_VecSizeSize(vFramePis) );
-
- // storage for priorities
- vPrios = Vec_IntStartFull( Aig_ManObjNumMax(pAig) );
- Vec_IntWriteEntry( vPrios, Aig_ObjId(Aig_ManConst1(pAig)), Vec_VecSizeSize(vFramePis) + Aig_ManRegNum(pAig) );
-
- // compute LO priority and phase
- vPrioLis = Vec_VecStart( pCex->iFrame+1 );
- vPhaseLis = Vec_VecStart( pCex->iFrame+1 );
- for ( f = 0; f <= pCex->iFrame; f++ )
- {
- // set phase and polarity
- Saig_ManCexMinPhasePriority( pAig, pCex, f, vFramePis, vFrameLis, vPrioPis, vPrioLis, vPhaseLis, vPrios );
- // save phase and priority
- Vec_VecForEachEntryIntLevel( vFrameLis, Entry, i, f )
- {
- pObj = Aig_ManObj( pAig, Entry );
- Vec_VecPushInt( vPrioLis, f, Vec_IntEntry(vPrios, Aig_ObjId(pObj)) );
- Vec_VecPushInt( vPhaseLis, f, pObj->fPhase );
- }
- }
- // check the property output
- pObj = Aig_ManPo( pAig, pCex->iPo );
- assert( pObj->fPhase );
-
+ int i, f;
// select reason for the property to fail
- vReasonPis = Vec_VecStart( pCex->iFrame+1 );
- vReasonLis = Vec_VecStart( pCex->iFrame+1 );
+ vFrameReas = Vec_VecStart( pCex->iFrame+1 );
+ vRoots = Vec_IntAlloc( 1000 );
for ( f = pCex->iFrame; f >= 0; f-- )
{
// set phase and polarity
- Saig_ManCexMinPhasePriority( pAig, pCex, f, vFramePis, vFrameLis, vPrioPis, vPrioLis, vPhaseLis, vPrios );
- // select reasons
+ Saig_ManCexMinDerivePhasePriority( pAig, pCex, vFrameCis, vFramePPs, f, vRoots );
+ // create roots
+ vLeaves = (f == pCex->iFrame) ? NULL : Vec_VecEntryInt(vFrameCis, f+1);
+ Saig_ManCexMinGetCos( pAig, pCex, vLeaves, vRoots );
+ // collect nodes starting from the roots
Aig_ManIncrementTravId( pAig );
- Vec_VecForEachEntryIntLevel( vFrameLis, Entry, i, f )
- Saig_ManCexMinFindReason_rec( pAig, Aig_ManObj(pAig, Entry), vPrios,
- Vec_VecEntryInt( vReasonPis, f ),
- (Vec_Int_t *)(f ? Vec_VecEntry( vReasonLis, f-1 ) : NULL) );
+ Aig_ManForEachObjVec( vRoots, pAig, pObj, i )
+ Saig_ManCexMinCollectReason_rec( pAig, pObj, Vec_VecEntryInt(vFrameReas, f), fPiReason );
+//printf( "%d(%d) ", Vec_VecLevelSize(vFrameCis, f), Vec_VecLevelSize(vFrameReas, f) );
}
-
- // here are computes the reasons
- printf( "Total number of reason PIs = %d.\n", Vec_VecSizeSize(vReasonPis) );
-
- // clean up
- Vec_VecFree( vFramePis );
- Vec_VecFree( vFrameLis );
- Vec_VecFree( vPrioPis );
- Vec_VecFree( vPrioLis );
- Vec_VecFree( vPhaseLis );
- Vec_VecFree( vReasonPis );
- Vec_VecFree( vReasonLis );
- Vec_IntFree( vPrios );
- return pCexMin;
+//printf( "\n" );
+ Vec_IntFree( vRoots );
+ return vFrameReas;
}
/**Function*************************************************************
@@ -332,25 +414,114 @@ Abc_Cex_t * Saig_ManCexMinPerform( Aig_Man_t * pAig, Abc_Cex_t * pCex )
SeeAlso []
***********************************************************************/
-void Saig_ManCexMinGetCos( Aig_Man_t * pAig, Abc_Cex_t * pCex, Vec_Vec_t * vFrameCis, int f, Vec_Int_t * vTemp )
+Vec_Vec_t * Saig_ManCexMinComputeReason( Aig_Man_t * pAig, Abc_Cex_t * pCex, int fPiReason )
{
- Vec_Int_t * vFrameCisOne;
- Aig_Obj_t * pObj;
- int i;
- Vec_IntClear( vTemp );
- if ( f == Vec_VecSize(vFrameCis) - 1 )
+ Vec_Vec_t * vFrameCis, * vFramePPs, * vFrameReas;
+ // sanity checks
+ assert( pCex->nPis == Saig_ManPiNum(pAig) );
+ assert( pCex->nRegs == Saig_ManRegNum(pAig) );
+ assert( pCex->iPo >= 0 && pCex->iPo < Saig_ManPoNum(pAig) );
+ // derive frame terms
+ vFrameCis = Saig_ManCexMinCollectFrameTerms( pAig, pCex );
+ // derive phase and priority
+ vFramePPs = Saig_ManCexMinCollectPhasePriority( pAig, pCex, vFrameCis );
+ // derive reasons for property failure
+ vFrameReas = Saig_ManCexMinCollectReason( pAig, pCex, vFrameCis, vFramePPs, fPiReason );
+ Vec_VecFree( vFramePPs );
+ Vec_VecFree( vFrameCis );
+ return vFrameReas;
+}
+
+
+/**Function*************************************************************
+
+ Synopsis [Duplicate with literals.]
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Aig_Man_t * Saig_ManCexMinDupWithCubes( Aig_Man_t * pAig, Vec_Vec_t * vReg2Value )
+{
+ Vec_Int_t * vLevel;
+ Aig_Man_t * pAigNew;
+ Aig_Obj_t * pObj, * pMiter;
+ int i, k, Lit;
+ assert( pAig->nConstrs == 0 );
+ // start the new manager
+ pAigNew = Aig_ManStart( Aig_ManNodeNum(pAig) + Vec_VecSizeSize(vReg2Value) + Vec_VecSize(vReg2Value) );
+ pAigNew->pName = Aig_UtilStrsav( pAig->pName );
+ // map the constant node
+ Aig_ManConst1(pAig)->pData = Aig_ManConst1( pAigNew );
+ // create variables for PIs
+ Aig_ManForEachPi( pAig, pObj, i )
+ pObj->pData = Aig_ObjCreatePi( pAigNew );
+ // add internal nodes of this frame
+ Aig_ManForEachNode( pAig, pObj, i )
+ pObj->pData = Aig_And( pAigNew, Aig_ObjChild0Copy(pObj), Aig_ObjChild1Copy(pObj) );
+ // create POs for cubes
+ Vec_VecForEachLevelInt( vReg2Value, vLevel, i )
{
- pObj = Aig_ManPo( pAig, pCex->iPo );
- Vec_IntPush( vTemp, Aig_ObjId(pObj) );
- return;
+ if ( i == 0 )
+ continue;
+ pMiter = Aig_ManConst1( pAigNew );
+ Vec_IntForEachEntry( vLevel, Lit, k )
+ {
+ assert( Lit >= 0 && Lit < 2 * Aig_ManRegNum(pAig) );
+ pObj = Saig_ManLi( pAig, Aig_Lit2Var(Lit) );
+ pMiter = Aig_And( pAigNew, pMiter, Aig_NotCond(Aig_ObjChild0Copy(pObj), Aig_LitIsCompl(Lit)) );
+ }
+ Aig_ObjCreatePo( pAigNew, pMiter );
}
- vFrameCisOne = Vec_VecEntryInt( vFrameCis, f+1 );
- Aig_ManForEachObjVec( vFrameCisOne, pAig, pObj, i )
- if ( Saig_ObjIsLo(pAig, pObj) )
- Vec_IntPush( vTemp, Aig_ObjId( Saig_ObjLoToLi(pAig, pObj) ) );
+ // transfer to register outputs
+ Saig_ManForEachLi( pAig, pObj, i )
+ Aig_ObjCreatePo( pAigNew, Aig_ObjChild0Copy(pObj) );
+ // finalize
+ Aig_ManCleanup( pAigNew );
+ Aig_ManSetRegNum( pAigNew, Aig_ManRegNum(pAig) );
+ return pAigNew;
}
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Abc_Cex_t * Saig_ManCexMinPerform( Aig_Man_t * pAig, Abc_Cex_t * pCex )
+{
+ int fReasonPi = 0;
+
+ Abc_Cex_t * pCexMin = NULL;
+ Aig_Man_t * pManNew = NULL;
+ Vec_Vec_t * vFrameReas;
+ vFrameReas = Saig_ManCexMinComputeReason( pAig, pCex, fReasonPi );
+ printf( "Reason size = %d. Ave = %d.\n", Vec_VecSizeSize(vFrameReas), Vec_VecSizeSize(vFrameReas)/(pCex->iFrame + 1) );
+
+ // try reducing the frames
+ if ( !fReasonPi )
+ {
+ char * pFileName = "aigcube.aig";
+ pManNew = Saig_ManCexMinDupWithCubes( pAig, vFrameReas );
+ Ioa_WriteAiger( pManNew, pFileName, 0, 0 );
+ Aig_ManStop( pManNew );
+ printf( "Intermediate AIG is written into file \"%s\".\n", pFileName );
+ }
+
+ // find reduced counter-example
+ Vec_VecFree( vFrameReas );
+ return pCexMin;
+}
+
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index 54f6a1ff..5e9041b1 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -20701,11 +20701,12 @@ int Abc_CommandCexMin( Abc_Frame_t * pAbc, int argc, char ** argv )
else if ( iPoOld != pAbc->pCex->iPo )
Abc_Print( 0, "Main AIG: The cex refined PO %d instead of PO %d.\n", pAbc->pCex->iPo, iPoOld );
// perform minimization
-// vCexNew = Saig_ManCexMinPerform( pAig, pAbc->pCex );
+ vCexNew = Saig_ManCexMinPerform( pAig, pAbc->pCex );
Aig_ManStop( pAig );
+ Abc_CexFree( vCexNew );
// Abc_FrameReplaceCex( pAbc, &vCexNew );
- printf( "Implementation of this command is not finished.\n" );
+// printf( "Implementation of this command is not finished.\n" );
}
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 03:25:03 +0000