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-rw-r--r--abcexe.dsp4
-rw-r--r--src/base/abci/abc.c30
-rw-r--r--src/sat/bmc/bmc.h4
-rw-r--r--src/sat/bmc/bmcMaj.c1002
4 files changed, 1031 insertions, 9 deletions
diff --git a/abcexe.dsp b/abcexe.dsp
index 823af19e..9d5152fc 100644
--- a/abcexe.dsp
+++ b/abcexe.dsp
@@ -88,10 +88,6 @@ LINK32=link.exe
# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
# Begin Source File
-SOURCE=.\src\aig\gia\giaSif.c
-# End Source File
-# Begin Source File
-
SOURCE=.\src\base\main\main.c
# End Source File
# End Group
diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index eb6f6145..775172e7 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -8766,11 +8766,13 @@ int Abc_CommandTwoExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
extern void Exa_ManExactSynthesis( Bmc_EsPar_t * pPars );
extern void Exa_ManExactSynthesis2( Bmc_EsPar_t * pPars );
- int c;
+ extern void Exa_ManExactSynthesis4( Bmc_EsPar_t * pPars );
+ extern void Exa_ManExactSynthesis5( Bmc_EsPar_t * pPars );
+ int c, fKissat = 0, fKissat2 = 0;
Bmc_EsPar_t Pars, * pPars = &Pars;
Bmc_EsParSetDefault( pPars );
Extra_UtilGetoptReset();
- while ( ( c = Extra_UtilGetopt( argc, argv, "INTadcogvh" ) ) != EOF )
+ while ( ( c = Extra_UtilGetopt( argc, argv, "INTadconugklvh" ) ) != EOF )
{
switch ( c )
{
@@ -8819,9 +8821,21 @@ int Abc_CommandTwoExact( Abc_Frame_t * pAbc, int argc, char ** argv )
case 'o':
pPars->fFewerVars ^= 1;
break;
+ case 'n':
+ pPars->fOrderNodes ^= 1;
+ break;
+ case 'u':
+ pPars->fUniqFans ^= 1;
+ break;
case 'g':
pPars->fGlucose ^= 1;
break;
+ case 'k':
+ fKissat ^= 1;
+ break;
+ case 'l':
+ fKissat2 ^= 1;
+ break;
case 'v':
pPars->fVerbose ^= 1;
break;
@@ -8853,14 +8867,18 @@ int Abc_CommandTwoExact( Abc_Frame_t * pAbc, int argc, char ** argv )
Abc_Print( -1, "Function should not have more than 10 inputs.\n" );
return 1;
}
- if ( pPars->fGlucose )
+ if ( fKissat )
+ Exa_ManExactSynthesis4( pPars );
+ else if ( fKissat2 )
+ Exa_ManExactSynthesis5( pPars );
+ else if ( pPars->fGlucose )
Exa_ManExactSynthesis( pPars );
else
Exa_ManExactSynthesis2( pPars );
return 0;
usage:
- Abc_Print( -2, "usage: twoexact [-INT <num>] [-adcogvh] <hex>\n" );
+ Abc_Print( -2, "usage: twoexact [-INT <num>] [-adconugklvh] <hex>\n" );
Abc_Print( -2, "\t exact synthesis of multi-input function using two-input gates\n" );
Abc_Print( -2, "\t-I <num> : the number of input variables [default = %d]\n", pPars->nVars );
Abc_Print( -2, "\t-N <num> : the number of two-input nodes [default = %d]\n", pPars->nNodes );
@@ -8869,7 +8887,11 @@ usage:
Abc_Print( -2, "\t-d : toggle using dynamic constraint addition [default = %s]\n", pPars->fDynConstr ? "yes" : "no" );
Abc_Print( -2, "\t-c : toggle dumping CNF into a file [default = %s]\n", pPars->fDumpCnf ? "yes" : "no" );
Abc_Print( -2, "\t-o : toggle using additional optimizations [default = %s]\n", pPars->fFewerVars ? "yes" : "no" );
+ Abc_Print( -2, "\t-n : toggle ordering internal nodes [default = %s]\n", pPars->fOrderNodes ? "yes" : "no" );
+ Abc_Print( -2, "\t-u : toggle using unique fanouts [default = %s]\n", pPars->fUniqFans ? "yes" : "no" );
Abc_Print( -2, "\t-g : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", pPars->fGlucose ? "yes" : "no" );
+ Abc_Print( -2, "\t-k : toggle using Kissat by Armin Biere [default = %s]\n", fKissat ? "yes" : "no" );
+ Abc_Print( -2, "\t-l : toggle using Kissat by Armin Biere [default = %s]\n", fKissat2 ? "yes" : "no" );
Abc_Print( -2, "\t-v : toggle verbose printout [default = %s]\n", pPars->fVerbose ? "yes" : "no" );
Abc_Print( -2, "\t-h : print the command usage\n" );
Abc_Print( -2, "\t<hex> : truth table in hex notation\n" );
diff --git a/src/sat/bmc/bmc.h b/src/sat/bmc/bmc.h
index 4de0bd7d..844497ad 100644
--- a/src/sat/bmc/bmc.h
+++ b/src/sat/bmc/bmc.h
@@ -60,6 +60,8 @@ struct Bmc_EsPar_t_
int fOrderNodes;
int fEnumSols;
int fFewerVars;
+ int fQuadrEnc;
+ int fUniqFans;
int RuntimeLim;
int fVerbose;
char * pTtStr;
@@ -81,6 +83,8 @@ static inline void Bmc_EsParSetDefault( Bmc_EsPar_t * pPars )
pPars->fOrderNodes = 0;
pPars->fEnumSols = 0;
pPars->fFewerVars = 0;
+ pPars->fQuadrEnc = 0;
+ pPars->fUniqFans = 0;
pPars->RuntimeLim = 0;
pPars->fVerbose = 1;
}
diff --git a/src/sat/bmc/bmcMaj.c b/src/sat/bmc/bmcMaj.c
index 49b5dcc9..fda9dcdd 100644
--- a/src/sat/bmc/bmcMaj.c
+++ b/src/sat/bmc/bmcMaj.c
@@ -30,7 +30,7 @@ ABC_NAMESPACE_IMPL_START
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
-#define MAJ_NOBJS 32 // Const0 + Const1 + nVars + nNodes
+#define MAJ_NOBJS 64 // Const0 + Const1 + nVars + nNodes
typedef struct Maj_Man_t_ Maj_Man_t;
struct Maj_Man_t_
@@ -1459,6 +1459,1006 @@ void Exa3_ManExactSynthesis( Bmc_EsPar_t * pPars )
Abc_PrintTime( 1, "Total runtime", Abc_Clock() - clkTotal );
}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+Vec_Int_t * Exa4_ManParse( char * pFileName )
+{
+ Vec_Int_t * vRes = NULL;
+ char * pToken, pBuffer[1000];
+ FILE * pFile = fopen( pFileName, "rb" );
+ if ( pFile == NULL )
+ {
+ Abc_Print( -1, "Cannot open file \"%s\".\n", pFileName );
+ return NULL;
+ }
+ while ( fgets( pBuffer, 1000, pFile ) != NULL )
+ {
+ if ( pBuffer[0] == 's' )
+ {
+ if ( strncmp(pBuffer+2, "SAT", 3) )
+ break;
+ assert( vRes == NULL );
+ vRes = Vec_IntAlloc( 100 );
+ }
+ else if ( pBuffer[0] == 'v' )
+ {
+ pToken = strtok( pBuffer+1, " \n\r\t" );
+ while ( pToken )
+ {
+ int Token = atoi(pToken);
+ if ( Token == 0 )
+ break;
+ Vec_IntSetEntryFull( vRes, Abc_AbsInt(Token), Token > 0 );
+ pToken = strtok( NULL, " \n\r\t" );
+ }
+ }
+ else if ( pBuffer[0] != 'c' )
+ assert( 0 );
+ }
+ fclose( pFile );
+ return vRes;
+}
+Vec_Int_t * Exa4_ManSolve( char * pFileNameIn, char * pFileNameOut, int TimeOut, int fVerbose )
+{
+ int fVerboseSolver = 0;
+ abctime clkTotal = Abc_Clock();
+ Vec_Int_t * vRes = NULL;
+#ifdef _WIN32
+ char * pKissat = "kissat.exe";
+#else
+ char * pKissat = "kissat";
+#endif
+ char Command[1000], * pCommand = (char *)&Command;
+ if ( TimeOut )
+ sprintf( pCommand, "%s --time=%d %s %s > %s", pKissat, TimeOut, fVerboseSolver ? "": "-q", pFileNameIn, pFileNameOut );
+ else
+ sprintf( pCommand, "%s %s %s > %s", pKissat, fVerboseSolver ? "": "-q", pFileNameIn, pFileNameOut );
+ if ( system( pCommand ) == -1 )
+ {
+ fprintf( stdout, "Command \"%s\" did not succeed.\n", pCommand );
+ return 0;
+ }
+ vRes = Exa4_ManParse( pFileNameOut );
+ if ( fVerbose )
+ {
+ if ( vRes )
+ printf( "The problem has a solution. " );
+ else if ( vRes == NULL && TimeOut == 0 )
+ printf( "The problem has no solution. " );
+ else if ( vRes == NULL )
+ printf( "The problem has no solution or timed out after %d sec. ", TimeOut );
+ Abc_PrintTime( 1, "SAT solver time", Abc_Clock() - clkTotal );
+ }
+ return vRes;
+}
+
+
+typedef struct Exa4_Man_t_ Exa4_Man_t;
+struct Exa4_Man_t_
+{
+ Vec_Wrd_t * vSimsIn; // input signatures (nWords = 1, nIns <= 64)
+ Vec_Wrd_t * vSimsOut; // output signatures (nWords = 1, nOuts <= 6)
+ int fVerbose;
+ int nIns;
+ int nDivs; // divisors (const + inputs + tfi + sidedivs)
+ int nNodes;
+ int nOuts;
+ int nObjs;
+ int VarMarks[MAJ_NOBJS][2][MAJ_NOBJS];
+ int nCnfVars;
+ int nCnfClauses;
+ FILE * pFile;
+};
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+int Exa4_ManMarkup( Exa4_Man_t * p )
+{
+ int i, k, j, nVars[3] = {1 + 5*p->nNodes, 0, 3*p->nNodes*Vec_WrdSize(p->vSimsIn)};
+ assert( p->nObjs <= MAJ_NOBJS );
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ for ( k = 0; k < 2; k++ )
+ for ( j = 1+!k; j < i-k; j++ )
+ p->VarMarks[i][k][j] = nVars[0] + nVars[1]++;
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ for ( j = p->nOuts == 1 ? p->nDivs + p->nNodes - 1 : 0; j < p->nDivs + p->nNodes; j++ )
+ p->VarMarks[i][0][j] = nVars[0] + nVars[1]++;
+ if ( p->fVerbose )
+ printf( "Variables: Function = %d. Structure = %d. Internal = %d. Total = %d.\n",
+ nVars[0], nVars[1], nVars[2], nVars[0] + nVars[1] + nVars[2] );
+ if ( 1 )
+ {
+ for ( j = 0; j < 2; j++ )
+ {
+ printf( " : " );
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ for ( k = 0; k < 2; k++ )
+ printf( "%3d ", j ? k : i );
+ printf( " " );
+ }
+ printf( " " );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ printf( "%3d ", j ? 0 : i );
+ printf( " " );
+ }
+ printf( "\n" );
+ }
+ for ( j = 0; j < 5 + p->nNodes*9 + p->nOuts*5; j++ )
+ printf( "-" );
+ printf( "\n" );
+ for ( j = p->nObjs - 2; j >= 0; j-- )
+ {
+ if ( j > 0 && j <= p->nIns )
+ printf( " %c : ", 'a'+j-1 );
+ else
+ printf( "%2d : ", j );
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ for ( k = 0; k < 2; k++ )
+ printf( "%3d ", p->VarMarks[i][k][j] );
+ printf( " " );
+ }
+ printf( " " );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ printf( "%3d ", p->VarMarks[i][0][j] );
+ printf( " " );
+ }
+ printf( "\n" );
+ }
+ }
+ return nVars[0] + nVars[1] + nVars[2];
+}
+Exa4_Man_t * Exa4_ManAlloc( Vec_Wrd_t * vSimsIn, Vec_Wrd_t * vSimsOut, int nIns, int nDivs, int nOuts, int nNodes, int fVerbose )
+{
+ Exa4_Man_t * p = ABC_CALLOC( Exa4_Man_t, 1 );
+ assert( Vec_WrdSize(vSimsIn) == Vec_WrdSize(vSimsOut) );
+ p->vSimsIn = vSimsIn;
+ p->vSimsOut = vSimsOut;
+ p->fVerbose = fVerbose;
+ p->nIns = nIns;
+ p->nDivs = nDivs;
+ p->nNodes = nNodes;
+ p->nOuts = nOuts;
+ p->nObjs = p->nDivs + p->nNodes + p->nOuts;
+ p->nCnfVars = Exa4_ManMarkup( p );
+ return p;
+}
+void Exa4_ManFree( Exa4_Man_t * p )
+{
+ ABC_FREE( p );
+}
+
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+static inline int Exa4_ManAddClause( Exa4_Man_t * p, int * pLits, int nLits )
+{
+ int i, k = 0;
+ for ( i = 0; i < nLits; i++ )
+ if ( pLits[i] == 1 )
+ return 0;
+ else if ( pLits[i] == 0 )
+ continue;
+ else if ( pLits[i] <= 2*p->nCnfVars )
+ pLits[k++] = pLits[i];
+ else assert( 0 );
+ nLits = k;
+ assert( nLits > 0 );
+ if ( p->pFile )
+ {
+ p->nCnfClauses++;
+ for ( i = 0; i < nLits; i++ )
+ fprintf( p->pFile, "%s%d ", Abc_LitIsCompl(pLits[i]) ? "-" : "", Abc_Lit2Var(pLits[i]) );
+ fprintf( p->pFile, "0\n" );
+ }
+ if ( 0 )
+ {
+ for ( i = 0; i < nLits; i++ )
+ fprintf( stdout, "%s%d ", Abc_LitIsCompl(pLits[i]) ? "-" : "", Abc_Lit2Var(pLits[i]) );
+ fprintf( stdout, "\n" );
+ }
+ return 1;
+}
+static inline int Exa4_ManAddClause4( Exa4_Man_t * p, int Lit0, int Lit1, int Lit2, int Lit3 )
+{
+ int pLits[4] = { Lit0, Lit1, Lit2, Lit3 };
+ return Exa4_ManAddClause( p, pLits, 4 );
+}
+int Exa4_ManGenStart( Exa4_Man_t * p, int fOnlyAnd, int fFancy, int fOrderNodes, int fUniqFans )
+{
+ int pLits[2*MAJ_NOBJS], i, j, k, n, m, nLits;
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ int iVarStart = 1 + 5*(i - p->nDivs);//
+ for ( k = 0; k < 2; k++ )
+ {
+ nLits = 0;
+ for ( j = 0; j < p->nObjs; j++ )
+ if ( p->VarMarks[i][k][j] )
+ pLits[nLits++] = Abc_Var2Lit( p->VarMarks[i][k][j], 0 );
+ assert( nLits > 0 );
+ Exa4_ManAddClause( p, pLits, nLits );
+ for ( n = 0; n < nLits; n++ )
+ for ( m = n+1; m < nLits; m++ )
+ Exa4_ManAddClause4( p, Abc_LitNot(pLits[n]), Abc_LitNot(pLits[m]), 0, 0 );
+ if ( k == 1 )
+ break;
+ for ( j = 0; j < p->nObjs; j++ ) if ( p->VarMarks[i][0][j] )
+ for ( n = j; n < p->nObjs; n++ ) if ( p->VarMarks[i][1][n] )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][0][j], 1), Abc_Var2Lit(p->VarMarks[i][1][n], 1), 0, 0 );
+ }
+ if ( fOrderNodes )
+ for ( j = p->nDivs; j < i; j++ )
+ for ( n = 0; n < p->nObjs; n++ ) if ( p->VarMarks[i][0][n] )
+ for ( m = n+1; m < p->nObjs; m++ ) if ( p->VarMarks[j][0][m] )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][0][n], 1), Abc_Var2Lit(p->VarMarks[j][0][m], 1), 0, 0 );
+ for ( j = p->nDivs; j < i; j++ )
+ for ( k = 0; k < 2; k++ ) if ( p->VarMarks[i][k][j] )
+ for ( n = 0; n < p->nObjs; n++ ) if ( p->VarMarks[i][!k][n] )
+ for ( m = 0; m < 2; m++ ) if ( p->VarMarks[j][m][n] )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][k][j], 1), Abc_Var2Lit(p->VarMarks[i][!k][n], 1), Abc_Var2Lit(p->VarMarks[j][m][n], 1), 0 );
+ if ( fFancy )
+ {
+ nLits = 0;
+ for ( k = 0; k < 5-fOnlyAnd; k++ )
+ pLits[nLits++] = Abc_Var2Lit( iVarStart+k, 0 );
+ Exa4_ManAddClause( p, pLits, nLits );
+ for ( n = 0; n < nLits; n++ )
+ for ( m = n+1; m < nLits; m++ )
+ Exa4_ManAddClause4( p, Abc_LitNot(pLits[n]), Abc_LitNot(pLits[m]), 0, 0 );
+ }
+ else
+ {
+ for ( k = 0; k < 3; k++ )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart, k==1), Abc_Var2Lit(iVarStart+1, k==2), Abc_Var2Lit(iVarStart+2, k!=0), 0);
+ if ( fOnlyAnd )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart, 1), Abc_Var2Lit(iVarStart+1, 1), Abc_Var2Lit(iVarStart+2, 0), 0);
+ }
+ }
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ nLits = 0;
+ for ( k = 0; k < 2; k++ )
+ for ( j = i+1; j < p->nObjs; j++ )
+ if ( p->VarMarks[j][k][i] )
+ pLits[nLits++] = Abc_Var2Lit( p->VarMarks[j][k][i], 0 );
+ Exa4_ManAddClause( p, pLits, nLits );
+ if ( fUniqFans )
+ for ( n = 0; n < nLits; n++ )
+ for ( m = n+1; m < nLits; m++ )
+ Exa4_ManAddClause4( p, Abc_LitNot(pLits[n]), Abc_LitNot(pLits[m]), 0, 0 );
+ }
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ nLits = 0;
+ for ( j = 0; j < p->nDivs + p->nNodes; j++ ) if ( p->VarMarks[i][0][j] )
+ pLits[nLits++] = Abc_Var2Lit( p->VarMarks[i][0][j], 0 );
+ Exa4_ManAddClause( p, pLits, nLits );
+ for ( n = 0; n < nLits; n++ )
+ for ( m = n+1; m < nLits; m++ )
+ Exa4_ManAddClause4( p, Abc_LitNot(pLits[n]), Abc_LitNot(pLits[m]), 0, 0 );
+ }
+ return 1;
+}
+void Exa4_ManGenMint( Exa4_Man_t * p, int iMint, int fOnlyAnd, int fFancy )
+{
+ int iNodeVar = p->nCnfVars + 3*p->nNodes*(iMint - Vec_WrdSize(p->vSimsIn));
+ int iOutMint = Abc_Tt6FirstBit( Vec_WrdEntry(p->vSimsOut, iMint) );
+ int i, k, n, j, VarVals[MAJ_NOBJS];
+ assert( p->nObjs <= MAJ_NOBJS );
+ assert( iMint < Vec_WrdSize(p->vSimsIn) );
+ for ( i = 0; i < p->nDivs; i++ )
+ VarVals[i] = (Vec_WrdEntry(p->vSimsIn, iMint) >> i) & 1;
+ for ( i = 0; i < p->nNodes; i++ )
+ VarVals[p->nDivs + i] = Abc_Var2Lit(iNodeVar + 3*i + 2, 0);
+ for ( i = 0; i < p->nOuts; i++ )
+ VarVals[p->nDivs + p->nNodes + i] = (iOutMint >> i) & 1;
+ if ( 0 )
+ {
+ printf( "Adding minterm %d: ", iMint );
+ for ( i = 0; i < p->nObjs; i++ )
+ printf( " %d=%d", i, VarVals[i] );
+ printf( "\n" );
+ }
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ int iVarStart = 1 + 5*(i - p->nDivs);//
+ int iBaseVarI = iNodeVar + 3*(i - p->nDivs);
+ for ( k = 0; k < 2; k++ )
+ for ( j = 0; j < i; j++ ) if ( p->VarMarks[i][k][j] )
+ for ( n = 0; n < 2; n++ )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][k][j], 1), Abc_Var2Lit(iBaseVarI + k, n), Abc_LitNotCond(VarVals[j], !n), 0);
+ if ( fFancy )
+ {
+ // Clauses for a*b = c
+ // a + ~c
+ // b + ~c
+ // ~a + ~b + c
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 0, 1), Abc_Var2Lit(iBaseVarI + 0, 0), 0, Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 0, 1), 0, Abc_Var2Lit(iBaseVarI + 1, 0), Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 0, 1), Abc_Var2Lit(iBaseVarI + 0, 1), Abc_Var2Lit(iBaseVarI + 1, 1), Abc_Var2Lit(iBaseVarI + 2, 0) );
+
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 1, 1), Abc_Var2Lit(iBaseVarI + 0, 1), 0, Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 1, 1), 0, Abc_Var2Lit(iBaseVarI + 1, 0), Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 1, 1), Abc_Var2Lit(iBaseVarI + 0, 0), Abc_Var2Lit(iBaseVarI + 1, 1), Abc_Var2Lit(iBaseVarI + 2, 0) );
+
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 2, 1), Abc_Var2Lit(iBaseVarI + 0, 0), 0, Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 2, 1), 0, Abc_Var2Lit(iBaseVarI + 1, 1), Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 2, 1), Abc_Var2Lit(iBaseVarI + 0, 1), Abc_Var2Lit(iBaseVarI + 1, 0), Abc_Var2Lit(iBaseVarI + 2, 0) );
+ // Clauses for a+b = c
+ // ~a + c
+ // ~b + c
+ // a + b + ~c
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 3, 1), Abc_Var2Lit(iBaseVarI + 0, 1), 0, Abc_Var2Lit(iBaseVarI + 2, 0) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 3, 1), 0, Abc_Var2Lit(iBaseVarI + 1, 1), Abc_Var2Lit(iBaseVarI + 2, 0) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 3, 1), Abc_Var2Lit(iBaseVarI + 0, 0), Abc_Var2Lit(iBaseVarI + 1, 0), Abc_Var2Lit(iBaseVarI + 2, 1) );
+ // Clauses for a^b = c
+ // ~a + ~b + ~c
+ // ~a + b + c
+ // a + ~b + c
+ // a + b + ~c
+ if ( !fOnlyAnd )
+ {
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 4, 1), Abc_Var2Lit(iBaseVarI + 0, 1), Abc_Var2Lit(iBaseVarI + 1, 1), Abc_Var2Lit(iBaseVarI + 2, 1) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 4, 1), Abc_Var2Lit(iBaseVarI + 0, 1), Abc_Var2Lit(iBaseVarI + 1, 0), Abc_Var2Lit(iBaseVarI + 2, 0) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 4, 1), Abc_Var2Lit(iBaseVarI + 0, 0), Abc_Var2Lit(iBaseVarI + 1, 1), Abc_Var2Lit(iBaseVarI + 2, 0) );
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iVarStart + 4, 1), Abc_Var2Lit(iBaseVarI + 0, 0), Abc_Var2Lit(iBaseVarI + 1, 0), Abc_Var2Lit(iBaseVarI + 2, 1) );
+ }
+ }
+ else
+ {
+ for ( k = 0; k < 4; k++ )
+ for ( n = 0; n < 2; n++ )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(iBaseVarI + 0, k&1), Abc_Var2Lit(iBaseVarI + 1, k>>1), Abc_Var2Lit(iBaseVarI + 2, !n), Abc_Var2Lit(k ? iVarStart + k-1 : 0, n));
+ }
+ }
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ for ( j = 0; j < p->nDivs + p->nNodes; j++ ) if ( p->VarMarks[i][0][j] )
+ for ( n = 0; n < 2; n++ )
+ Exa4_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][0][j], 1), Abc_LitNotCond(VarVals[j], n), Abc_LitNotCond(VarVals[i], !n), 0);
+ }
+}
+void Exa4_ManGenCnf( Exa4_Man_t * p, char * pFileName, int fOnlyAnd, int fFancy, int fOrderNodes, int fUniqFans )
+{
+ int m;
+ assert( p->pFile == NULL );
+ p->pFile = fopen( pFileName, "wb" );
+ fputs( "p cnf \n", p->pFile );
+ Exa4_ManGenStart( p, fOnlyAnd, fFancy, fOrderNodes, fUniqFans );
+ for ( m = 1; m < Vec_WrdSize(p->vSimsIn); m++ )
+ Exa4_ManGenMint( p, m, fOnlyAnd, fFancy );
+ rewind( p->pFile );
+ fprintf( p->pFile, "p cnf %d %d", p->nCnfVars, p->nCnfClauses );
+ fclose( p->pFile );
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+static inline int Exa4_ManFindFanin( Exa4_Man_t * p, Vec_Int_t * vValues, int i, int k )
+{
+ int j, Count = 0, iVar = -1;
+ for ( j = 0; j < p->nObjs; j++ )
+ if ( p->VarMarks[i][k][j] && Vec_IntEntry(vValues, p->VarMarks[i][k][j]) )
+ {
+ iVar = j;
+ Count++;
+ }
+ assert( Count == 1 );
+ return iVar;
+}
+static inline void Exa4_ManPrintFanin( Exa4_Man_t * p, int iNode, int fComp )
+{
+ if ( iNode == 0 )
+ printf( " %s", fComp ? "const1" : "const0" );
+ else if ( iNode > 0 && iNode <= p->nIns )
+ printf( " %s%c", fComp ? "~" : "", 'a'+iNode-1 );
+ else if ( iNode > p->nIns && iNode < p->nDivs )
+ printf( " %s%c", fComp ? "~" : "", 'A'+iNode-p->nIns-1 );
+ else
+ printf( " %s%d", fComp ? "~" : "", iNode );
+}
+void Exa4_ManPrintSolution( Exa4_Man_t * p, Vec_Int_t * vValues, int fFancy )
+{
+ int i, k;
+ printf( "Circuit for %d-var function with %d divisors contains %d two-input gates:\n", p->nIns, p->nDivs, p->nNodes );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ int iVar = Exa4_ManFindFanin( p, vValues, i, 0 );
+ printf( "%2d = ", i );
+ Exa4_ManPrintFanin( p, iVar, 0 );
+ printf( "\n" );
+ }
+ for ( i = p->nDivs + p->nNodes - 1; i >= p->nDivs; i-- )
+ {
+ int iVarStart = 1 + 5*(i - p->nDivs);//
+ if ( fFancy )
+ {
+ int Val1 = Vec_IntEntry(vValues, iVarStart);
+ int Val2 = Vec_IntEntry(vValues, iVarStart+1);
+ int Val3 = Vec_IntEntry(vValues, iVarStart+2);
+ int Val4 = Vec_IntEntry(vValues, iVarStart+3);
+ int Val5 = Vec_IntEntry(vValues, iVarStart+4);
+ printf( "%2d = ", i );
+ for ( k = 0; k < 2; k++ )
+ {
+ int iNode = Exa4_ManFindFanin( p, vValues, i, !k );
+ int fComp = k ? Val1 | Val3 : Val2 | Val3;
+ Exa4_ManPrintFanin( p, iNode, fComp );
+ if ( k ) break;
+ printf( " %c", (Val1 || Val2 || Val3) ? '&' : (Val4 ? '|' : '^') );
+ }
+ }
+ else
+ {
+ int Val1 = Vec_IntEntry(vValues, iVarStart);
+ int Val2 = Vec_IntEntry(vValues, iVarStart+1);
+ int Val3 = Vec_IntEntry(vValues, iVarStart+2);
+ printf( "%2d = ", i );
+ for ( k = 0; k < 2; k++ )
+ {
+ int iNode = Exa4_ManFindFanin( p, vValues, i, !k );
+ int fComp = k ? !Val1 && Val2 && !Val3 : Val1 && !Val2 && !Val3;
+ Exa4_ManPrintFanin( p, iNode, fComp );
+ if ( k ) break;
+ printf( " %c", (Val1 && Val2) ? (Val3 ? '|' : '^') : '&' );
+ }
+ }
+ printf( "\n" );
+ }
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Exa4_ManGenTest( Vec_Wrd_t * vSimsIn, Vec_Wrd_t * vSimsOut, int nIns, int nDivs, int nOuts, int nNodes, int TimeOut, int fOnlyAnd, int fFancy, int fOrderNodes, int fUniqFans, int fVerbose )
+{
+ abctime clkTotal = Abc_Clock();
+ Vec_Int_t * vValues = NULL;
+ char * pFileNameIn = "_temp_.cnf";
+ char * pFileNameOut = "_temp_out.cnf";
+ Exa4_Man_t * p = Exa4_ManAlloc( vSimsIn, vSimsOut, nIns, nDivs, nOuts, nNodes, fVerbose );
+ Exa4_ManGenCnf( p, pFileNameIn, fOnlyAnd, fFancy, fOrderNodes, fUniqFans );
+ if ( fVerbose )
+ printf( "Timeout = %d. OnlyAnd = %d. Fancy = %d. OrderNodes = %d. UniqueFans = %d. Verbose = %d.\n", TimeOut, fOnlyAnd, fFancy, fOrderNodes, fUniqFans, fVerbose );
+ if ( fVerbose )
+ printf( "CNF with %d variables and %d clauses was dumped into file \"%s\".\n", p->nCnfVars, p->nCnfClauses, pFileNameIn );
+ vValues = Exa4_ManSolve( pFileNameIn, pFileNameOut, TimeOut, fVerbose );
+ if ( vValues ) Exa4_ManPrintSolution( p, vValues, fFancy );
+ Vec_IntFreeP( &vValues );
+ Exa4_ManFree( p );
+ Abc_PrintTime( 1, "Total runtime", Abc_Clock() - clkTotal );
+}
+void Exa_ManExactSynthesis4_( Bmc_EsPar_t * pPars )
+{
+ int i, m, fCompl = 0;
+ Vec_Wrd_t * vSimsIn = Vec_WrdStart( 8 );
+ Vec_Wrd_t * vSimsOut = Vec_WrdStart( 8 );
+ int Truths[2] = { 0x96969696, 0xE8E8E8E8 };
+ for ( m = 0; m < 8; m++ )
+ {
+ int iOutMint = 0;
+ for ( i = 0; i < 2; i++ )
+ if ( (Truths[i] >> m) & 1 )
+ iOutMint |= 1 << i;
+ Abc_TtSetBit( Vec_WrdEntryP(vSimsOut, m), iOutMint );
+ for ( i = 0; i < 3; i++ )
+ if ( (m >> i) & 1 )
+ Abc_TtSetBit( Vec_WrdEntryP(vSimsIn, m), 1+i );
+ }
+ Exa4_ManGenTest( vSimsIn, vSimsOut, 3, 4, 2, pPars->nNodes, pPars->RuntimeLim, pPars->fOnlyAnd, pPars->fFewerVars, pPars->fOrderNodes, pPars->fUniqFans, pPars->fVerbose );
+ Vec_WrdFree( vSimsIn );
+ Vec_WrdFree( vSimsOut );
+}
+void Exa_ManExactSynthesis4( Bmc_EsPar_t * pPars )
+{
+ int i, m, nMints = 1 << pPars->nVars, fCompl = 0;
+ Vec_Wrd_t * vSimsIn = Vec_WrdStart( nMints );
+ Vec_Wrd_t * vSimsOut = Vec_WrdStart( nMints );
+ word pTruth[16]; Abc_TtReadHex( pTruth, pPars->pTtStr );
+ if ( pTruth[0] & 1 ) { fCompl = 1; Abc_TtNot( pTruth, Abc_TtWordNum(pPars->nVars) ); }
+ assert( pPars->nVars <= 10 );
+ for ( m = 0; m < nMints; m++ )
+ {
+ Abc_TtSetBit( Vec_WrdEntryP(vSimsOut, m), Abc_TtGetBit(pTruth, m) );
+ for ( i = 0; i < pPars->nVars; i++ )
+ if ( (m >> i) & 1 )
+ Abc_TtSetBit( Vec_WrdEntryP(vSimsIn, m), 1+i );
+ }
+ assert( Vec_WrdSize(vSimsIn) == (1 << pPars->nVars) );
+ Exa4_ManGenTest( vSimsIn, vSimsOut, pPars->nVars, 1+pPars->nVars, 1, pPars->nNodes, pPars->RuntimeLim, pPars->fOnlyAnd, pPars->fFewerVars, pPars->fOrderNodes, pPars->fUniqFans, pPars->fVerbose );
+ if ( fCompl ) printf( "The resulting circuit, if computed, will be complemented.\n" );
+ Vec_WrdFree( vSimsIn );
+ Vec_WrdFree( vSimsOut );
+}
+
+
+
+typedef struct Exa5_Man_t_ Exa5_Man_t;
+struct Exa5_Man_t_
+{
+ Vec_Wrd_t * vSimsIn;
+ Vec_Wrd_t * vSimsOut;
+ int fVerbose;
+ int nIns;
+ int nDivs; // divisors (const + inputs + tfi + sidedivs)
+ int nNodes;
+ int nOuts;
+ int nObjs;
+ int VarMarks[MAJ_NOBJS][MAJ_NOBJS];
+ int nCnfVars;
+ int nCnfClauses;
+ FILE * pFile;
+ Vec_Int_t * vFans;
+};
+
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+int Exa5_ManMarkup( Exa5_Man_t * p )
+{
+ int i, j, k, nVars[3] = {1 + 3*p->nNodes, 0, p->nNodes*Vec_WrdSize(p->vSimsIn)};
+ assert( p->nObjs <= MAJ_NOBJS );
+ Vec_IntFill( p->vFans, 1 + 3*p->nNodes, 0 );
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ for ( j = 2; j < i; j++ )
+ {
+ p->VarMarks[i][j] = nVars[0] + nVars[1];
+ Vec_IntPush( p->vFans, 0 );
+ for ( k = 1; k < j; k++ )
+ Vec_IntPush( p->vFans, (i << 16) | (j << 8) | k );
+ nVars[1] += j;
+ }
+ assert( Vec_IntSize(p->vFans) == nVars[0] + nVars[1] );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ for ( j = p->nOuts == 1 ? p->nDivs + p->nNodes - 1 : 0; j < p->nDivs + p->nNodes; j++ )
+ p->VarMarks[i][j] = nVars[0] + nVars[1]++;
+ if ( p->fVerbose )
+ printf( "Variables: Function = %d. Structure = %d. Internal = %d. Total = %d.\n",
+ nVars[0], nVars[1], nVars[2], nVars[0] + nVars[1] + nVars[2] );
+ if ( 1 )
+ {
+ {
+ printf( " : " );
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ printf( "%3d ", i );
+ printf( " " );
+ }
+ printf( " " );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ printf( "%3d ", i );
+ printf( " " );
+ }
+ printf( "\n" );
+ }
+ for ( j = 0; j < 5 + p->nNodes*5 + p->nOuts*5; j++ )
+ printf( "-" );
+ printf( "\n" );
+ for ( j = p->nObjs - 2; j >= 0; j-- )
+ {
+ if ( j > 0 && j <= p->nIns )
+ printf( " %c : ", 'a'+j-1 );
+ else
+ printf( "%2d : ", j );
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ printf( "%3d ", p->VarMarks[i][j] );
+ printf( " " );
+ }
+ printf( " " );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ printf( "%3d ", p->VarMarks[i][j] );
+ printf( " " );
+ }
+ printf( "\n" );
+ }
+ }
+ return nVars[0] + nVars[1] + nVars[2];
+}
+Exa5_Man_t * Exa5_ManAlloc( Vec_Wrd_t * vSimsIn, Vec_Wrd_t * vSimsOut, int nIns, int nDivs, int nOuts, int nNodes, int fVerbose )
+{
+ Exa5_Man_t * p = ABC_CALLOC( Exa5_Man_t, 1 );
+ assert( Vec_WrdSize(vSimsIn) == Vec_WrdSize(vSimsOut) );
+ p->vSimsIn = vSimsIn;
+ p->vSimsOut = vSimsOut;
+ p->fVerbose = fVerbose;
+ p->nIns = nIns;
+ p->nDivs = nDivs;
+ p->nNodes = nNodes;
+ p->nOuts = nOuts;
+ p->nObjs = p->nDivs + p->nNodes + p->nOuts;
+ p->vFans = Vec_IntAlloc( 5000 );
+ p->nCnfVars = Exa5_ManMarkup( p );
+ return p;
+}
+void Exa5_ManFree( Exa5_Man_t * p )
+{
+ Vec_IntFree( p->vFans );
+ ABC_FREE( p );
+}
+
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+static inline int Exa5_ManAddClause( Exa5_Man_t * p, int * pLits, int nLits )
+{
+ int i, k = 0;
+ for ( i = 0; i < nLits; i++ )
+ if ( pLits[i] == 1 )
+ return 0;
+ else if ( pLits[i] == 0 )
+ continue;
+ else if ( pLits[i] <= 2*p->nCnfVars )
+ pLits[k++] = pLits[i];
+ else assert( 0 );
+ nLits = k;
+ assert( nLits > 0 );
+ if ( p->pFile )
+ {
+ p->nCnfClauses++;
+ for ( i = 0; i < nLits; i++ )
+ fprintf( p->pFile, "%s%d ", Abc_LitIsCompl(pLits[i]) ? "-" : "", Abc_Lit2Var(pLits[i]) );
+ fprintf( p->pFile, "0\n" );
+ }
+ if ( 0 )
+ {
+ for ( i = 0; i < nLits; i++ )
+ fprintf( stdout, "%s%d ", Abc_LitIsCompl(pLits[i]) ? "-" : "", Abc_Lit2Var(pLits[i]) );
+ fprintf( stdout, "\n" );
+ }
+ return 1;
+}
+static inline int Exa5_ManAddClause4( Exa5_Man_t * p, int Lit0, int Lit1, int Lit2, int Lit3, int Lit4 )
+{
+ int pLits[5] = { Lit0, Lit1, Lit2, Lit3, Lit4 };
+ return Exa5_ManAddClause( p, pLits, 5 );
+}
+static inline void Exa5_ManAddOneHot( Exa5_Man_t * p, int * pLits, int nLits )
+{
+ int n, m;
+ for ( n = 0; n < nLits; n++ )
+ for ( m = n+1; m < nLits; m++ )
+ Exa5_ManAddClause4( p, Abc_LitNot(pLits[n]), Abc_LitNot(pLits[m]), 0, 0, 0 );
+}
+static inline void Exa5_ManAddGroup( Exa5_Man_t * p, int iVar, int nVars )
+{
+ int i, pLits[MAJ_NOBJS];
+ assert( nVars+1 <= MAJ_NOBJS );
+ pLits[0] = Abc_Var2Lit( iVar, 1 );
+ for ( i = 1; i <= nVars; i++ )
+ pLits[i] = Abc_Var2Lit( iVar+i, 0 );
+ Exa5_ManAddClause( p, pLits, nVars+1 );
+ Exa5_ManAddOneHot( p, pLits+1, nVars );
+ for ( i = 1; i <= nVars; i++ )
+ Exa5_ManAddClause4( p, Abc_LitNot(pLits[0]), Abc_LitNot(pLits[i]), 0, 0, 0 );
+}
+int Exa5_ManGenStart( Exa5_Man_t * p, int fOnlyAnd, int fFancy, int fOrderNodes, int fUniqFans )
+{
+ Vec_Int_t * vArray = Vec_IntAlloc( 100 );
+ int pLits[MAJ_NOBJS], i, j, k, n, m, nLits, iObj;
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ int iVarStart = 1 + 3*(i - p->nDivs);//
+ nLits = 0;
+ for ( j = 0; j < i; j++ ) if ( p->VarMarks[i][j] )
+ Exa5_ManAddGroup( p, p->VarMarks[i][j], j-1 ), pLits[nLits++] = Abc_Var2Lit(p->VarMarks[i][j], 0);
+ Exa5_ManAddClause( p, pLits, nLits );
+ Exa5_ManAddOneHot( p, pLits, nLits );
+ if ( fOrderNodes )
+ for ( j = p->nDivs; j < i; j++ )
+ for ( n = 0; n < p->nObjs; n++ ) if ( p->VarMarks[i][n] )
+ for ( m = n+1; m < p->nObjs; m++ ) if ( p->VarMarks[j][m] )
+ Exa5_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][n], 1), Abc_Var2Lit(p->VarMarks[j][m], 1), 0, 0, 0 );
+ for ( j = p->nDivs; j < i; j++ ) if ( p->VarMarks[i][j] )
+ {
+ // go through all variables of i that point to j and k
+ for ( n = 1; n < j; n++ )
+ {
+ int iVar = p->VarMarks[i][j] + n; // variable of i pointing to j
+ int iObj = Vec_IntEntry( p->vFans, iVar );
+ int iNode0 = (iObj >> 0) & 0xFF;
+ int iNode1 = (iObj >> 8) & 0xFF;
+ int iNode2 = (iObj >> 16) & 0xFF;
+ assert( iObj > 0 );
+ assert( iNode1 == j );
+ assert( iNode2 == i );
+ // go through all variables of j and block those that point to k
+ assert( p->VarMarks[j][2] > 0 );
+ assert( p->VarMarks[j+1][2] > 0 );
+ for ( m = p->VarMarks[j][2]+1; m < p->VarMarks[j+1][2]; m++ )
+ {
+ int jObj = Vec_IntEntry( p->vFans, m );
+ int jNode0 = (jObj >> 0) & 0xFF;
+ int jNode1 = (jObj >> 8) & 0xFF;
+ int jNode2 = (jObj >> 16) & 0xFF;
+ if ( jObj == 0 )
+ continue;
+ assert( jNode2 == j );
+ if ( iNode0 == jNode0 || iNode0 == jNode1 )
+ Exa5_ManAddClause4( p, Abc_Var2Lit(iVar, 1), Abc_Var2Lit(m, 1), 0, 0, 0 );
+ }
+ }
+ }
+ for ( k = 0; k < 3; k++ )
+ Exa5_ManAddClause4( p, Abc_Var2Lit(iVarStart, k==1), Abc_Var2Lit(iVarStart+1, k==2), Abc_Var2Lit(iVarStart+2, k!=0), 0, 0);
+ if ( fOnlyAnd )
+ Exa5_ManAddClause4( p, Abc_Var2Lit(iVarStart, 1), Abc_Var2Lit(iVarStart+1, 1), Abc_Var2Lit(iVarStart+2, 0), 0, 0);
+ }
+ for ( i = p->nDivs; i < p->nDivs + p->nNodes; i++ )
+ {
+ Vec_IntClear( vArray );
+ Vec_IntForEachEntry( p->vFans, iObj, k )
+ if ( iObj && ((iObj & 0xFF) == i || ((iObj >> 8) & 0xFF) == i) )
+ Vec_IntPush( vArray, Abc_Var2Lit(k, 0) );
+ for ( k = p->nDivs + p->nNodes; k < p->nObjs; k++ ) if ( p->VarMarks[k][i] )
+ Vec_IntPush( vArray, Abc_Var2Lit(p->VarMarks[k][i], 0) );
+ Exa5_ManAddClause( p, Vec_IntArray(vArray), Vec_IntSize(vArray) );
+ if ( fUniqFans )
+ Exa5_ManAddOneHot( p, pLits, nLits );
+ }
+ Vec_IntFree( vArray );
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ nLits = 0;
+ for ( j = 0; j < p->nDivs + p->nNodes; j++ ) if ( p->VarMarks[i][j] )
+ pLits[nLits++] = Abc_Var2Lit( p->VarMarks[i][j], 0 );
+ Exa5_ManAddClause( p, pLits, nLits );
+ Exa5_ManAddOneHot( p, pLits, nLits );
+ }
+ return 1;
+}
+void Exa5_ManGenMint( Exa5_Man_t * p, int iMint, int fOnlyAnd, int fFancy )
+{
+ int iNodeVar = p->nCnfVars + p->nNodes*(iMint - Vec_WrdSize(p->vSimsIn));
+ int iOutMint = Abc_Tt6FirstBit( Vec_WrdEntry(p->vSimsOut, iMint) );
+ int i, k, n, j, VarVals[MAJ_NOBJS], iNodes[3], iVarStart, iObj;
+ assert( p->nObjs <= MAJ_NOBJS );
+ assert( iMint < Vec_WrdSize(p->vSimsIn) );
+ for ( i = 0; i < p->nDivs; i++ )
+ VarVals[i] = (Vec_WrdEntry(p->vSimsIn, iMint) >> i) & 1;
+ for ( i = 0; i < p->nNodes; i++ )
+ VarVals[p->nDivs + i] = Abc_Var2Lit(iNodeVar + i, 0);
+ for ( i = 0; i < p->nOuts; i++ )
+ VarVals[p->nDivs + p->nNodes + i] = (iOutMint >> i) & 1;
+ if ( 0 )
+ {
+ printf( "Adding minterm %d: ", iMint );
+ for ( i = 0; i < p->nObjs; i++ )
+ printf( " %d=%d", i, VarVals[i] );
+ printf( "\n" );
+ }
+ Vec_IntForEachEntry( p->vFans, iObj, i )
+ {
+ if ( iObj == 0 ) continue;
+ iNodes[1] = (iObj >> 0) & 0xFF;
+ iNodes[0] = (iObj >> 8) & 0xFF;
+ iNodes[2] = (iObj >> 16) & 0xFF;
+ iVarStart = 1 + 3*(iNodes[2] - p->nDivs);//
+ for ( k = 0; k < 4; k++ )
+ for ( n = 0; n < 2; n++ )
+ Exa5_ManAddClause4( p, Abc_Var2Lit(i, 1), Abc_LitNotCond(VarVals[iNodes[0]], k&1), Abc_LitNotCond(VarVals[iNodes[1]], k>>1), Abc_LitNotCond(VarVals[iNodes[2]], !n), Abc_Var2Lit(k ? iVarStart + k-1 : 0, n));
+ }
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ for ( j = 0; j < p->nDivs + p->nNodes; j++ ) if ( p->VarMarks[i][j] )
+ for ( n = 0; n < 2; n++ )
+ Exa5_ManAddClause4( p, Abc_Var2Lit(p->VarMarks[i][j], 1), Abc_LitNotCond(VarVals[j], n), Abc_LitNotCond(VarVals[i], !n), 0, 0);
+ }
+}
+void Exa5_ManGenCnf( Exa5_Man_t * p, char * pFileName, int fOnlyAnd, int fFancy, int fOrderNodes, int fUniqFans )
+{
+ int m;
+ assert( p->pFile == NULL );
+ p->pFile = fopen( pFileName, "wb" );
+ fputs( "p cnf \n", p->pFile );
+ Exa5_ManGenStart( p, fOnlyAnd, fFancy, fOrderNodes, fUniqFans );
+ for ( m = 1; m < Vec_WrdSize(p->vSimsIn); m++ )
+ Exa5_ManGenMint( p, m, fOnlyAnd, fFancy );
+ rewind( p->pFile );
+ fprintf( p->pFile, "p cnf %d %d", p->nCnfVars, p->nCnfClauses );
+ fclose( p->pFile );
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+static inline int Exa5_ManFindFanin( Exa5_Man_t * p, Vec_Int_t * vValues, int i )
+{
+ int j, Count = 0, iVar = -1;
+ for ( j = 0; j < p->nObjs; j++ )
+ if ( p->VarMarks[i][j] && Vec_IntEntry(vValues, p->VarMarks[i][j]) )
+ {
+ iVar = j;
+ Count++;
+ }
+ assert( Count == 1 );
+ return iVar;
+}
+static inline void Exa5_ManPrintFanin( Exa5_Man_t * p, int iNode, int fComp )
+{
+ if ( iNode == 0 )
+ printf( " %s", fComp ? "const1" : "const0" );
+ else if ( iNode > 0 && iNode <= p->nIns )
+ printf( " %s%c", fComp ? "~" : "", 'a'+iNode-1 );
+ else if ( iNode > p->nIns && iNode < p->nDivs )
+ printf( " %s%c", fComp ? "~" : "", 'A'+iNode-p->nIns-1 );
+ else
+ printf( " %s%d", fComp ? "~" : "", iNode );
+}
+void Exa5_ManPrintSolution( Exa5_Man_t * p, Vec_Int_t * vValues, int fFancy )
+{
+ int Fan0[MAJ_NOBJS] = {0};
+ int Fan1[MAJ_NOBJS] = {0};
+ int Count[MAJ_NOBJS] = {0};
+ int i, k, iObj, iNodes[3];
+ printf( "Circuit for %d-var function with %d divisors contains %d two-input gates:\n", p->nIns, p->nDivs, p->nNodes );
+ Vec_IntForEachEntry( p->vFans, iObj, i )
+ {
+ if ( iObj == 0 || Vec_IntEntry(vValues, i) == 0 )
+ continue;
+ iNodes[0] = (iObj >> 0) & 0xFF;
+ iNodes[1] = (iObj >> 8) & 0xFF;
+ iNodes[2] = (iObj >> 16) & 0xFF;
+ assert( p->nDivs <= iNodes[2] && iNodes[2] < p->nDivs + p->nNodes );
+ Fan0[iNodes[2]] = iNodes[0];
+ Fan1[iNodes[2]] = iNodes[1];
+ Count[iNodes[2]]++;
+ }
+ for ( i = p->nDivs + p->nNodes; i < p->nObjs; i++ )
+ {
+ int iVar = Exa5_ManFindFanin( p, vValues, i );
+ printf( "%2d = ", i );
+ Exa5_ManPrintFanin( p, iVar, 0 );
+ printf( "\n" );
+ }
+ for ( i = p->nDivs + p->nNodes - 1; i >= p->nDivs; i-- )
+ {
+ int iVarStart = 1 + 3*(i - p->nDivs);//
+ int Val1 = Vec_IntEntry(vValues, iVarStart);
+ int Val2 = Vec_IntEntry(vValues, iVarStart+1);
+ int Val3 = Vec_IntEntry(vValues, iVarStart+2);
+ assert( Count[i] == 1 );
+ printf( "%2d = ", i );
+ for ( k = 0; k < 2; k++ )
+ {
+ int iNode = k ? Fan1[i] : Fan0[i];
+ int fComp = k ? !Val1 && Val2 && !Val3 : Val1 && !Val2 && !Val3;
+ Exa5_ManPrintFanin( p, iNode, fComp );
+ if ( k ) break;
+ printf( " %c", (Val1 && Val2) ? (Val3 ? '|' : '^') : '&' );
+ }
+ printf( "\n" );
+ }
+}
+
+/**Function*************************************************************
+
+ Synopsis []
+
+ Description []
+
+ SideEffects []
+
+ SeeAlso []
+
+***********************************************************************/
+void Exa5_ManGenTest( Vec_Wrd_t * vSimsIn, Vec_Wrd_t * vSimsOut, int nIns, int nDivs, int nOuts, int nNodes, int TimeOut, int fOnlyAnd, int fFancy, int fOrderNodes, int fUniqFans, int fVerbose )
+{
+ abctime clkTotal = Abc_Clock();
+ Vec_Int_t * vValues = NULL;
+ char * pFileNameIn = "_temp_.cnf";
+ char * pFileNameOut = "_temp_out.cnf";
+ Exa5_Man_t * p = Exa5_ManAlloc( vSimsIn, vSimsOut, nIns, nDivs, nOuts, nNodes, fVerbose );
+ Exa5_ManGenCnf( p, pFileNameIn, fOnlyAnd, fFancy, fOrderNodes, fUniqFans );
+ if ( fVerbose )
+ printf( "Timeout = %d. OnlyAnd = %d. Fancy = %d. OrderNodes = %d. UniqueFans = %d. Verbose = %d.\n", TimeOut, fOnlyAnd, fFancy, fOrderNodes, fUniqFans, fVerbose );
+ if ( fVerbose )
+ printf( "CNF with %d variables and %d clauses was dumped into file \"%s\".\n", p->nCnfVars, p->nCnfClauses, pFileNameIn );
+ vValues = Exa4_ManSolve( pFileNameIn, pFileNameOut, TimeOut, fVerbose );
+ if ( vValues ) Exa5_ManPrintSolution( p, vValues, fFancy );
+ Vec_IntFreeP( &vValues );
+ Exa5_ManFree( p );
+ Abc_PrintTime( 1, "Total runtime", Abc_Clock() - clkTotal );
+}
+void Exa_ManExactSynthesis5( Bmc_EsPar_t * pPars )
+{
+ int i, m, nMints = 1 << pPars->nVars, fCompl = 0;
+ Vec_Wrd_t * vSimsIn = Vec_WrdStart( nMints );
+ Vec_Wrd_t * vSimsOut = Vec_WrdStart( nMints );
+ word pTruth[16]; Abc_TtReadHex( pTruth, pPars->pTtStr );
+ if ( pTruth[0] & 1 ) { fCompl = 1; Abc_TtNot( pTruth, Abc_TtWordNum(pPars->nVars) ); }
+ assert( pPars->nVars <= 10 );
+ for ( m = 0; m < nMints; m++ )
+ {
+ Abc_TtSetBit( Vec_WrdEntryP(vSimsOut, m), Abc_TtGetBit(pTruth, m) );
+ for ( i = 0; i < pPars->nVars; i++ )
+ if ( (m >> i) & 1 )
+ Abc_TtSetBit( Vec_WrdEntryP(vSimsIn, m), 1+i );
+ }
+ assert( Vec_WrdSize(vSimsIn) == (1 << pPars->nVars) );
+ Exa5_ManGenTest( vSimsIn, vSimsOut, pPars->nVars, 1+pPars->nVars, 1, pPars->nNodes, pPars->RuntimeLim, pPars->fOnlyAnd, pPars->fFewerVars, pPars->fOrderNodes, pPars->fUniqFans, pPars->fVerbose );
+ if ( fCompl ) printf( "The resulting circuit, if computed, will be complemented.\n" );
+ Vec_WrdFree( vSimsIn );
+ Vec_WrdFree( vSimsOut );
+}
+
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 18:25:44 +0000