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Improvements to SAT based SOP computation.

This commit is contained in:
Alan Mishchenko 2017-10-06 17:16:16 +03:00
parent 02972e53c2
commit f97b8d2882
5 changed files with 44 additions and 25 deletions
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1
src/aig/gia/gia.h
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@ -1353,6 +1353,7 @@ extern void Gia_ManHashProfile( Gia_Man_t * p );
extern int Gia_ManHashLookupInt( Gia_Man_t * p, int iLit0, int iLit1 );
extern int Gia_ManHashLookup( Gia_Man_t * p, Gia_Obj_t * p0, Gia_Obj_t * p1 );
extern int Gia_ManHashAndMulti( Gia_Man_t * p, Vec_Int_t * vLits );
extern int Gia_ManHashAndMulti2( Gia_Man_t * p, Vec_Int_t * vLits );
/*=== giaIf.c ===========================================================*/
extern void Gia_ManPrintMappingStats( Gia_Man_t * p, char * pDumpFile );
extern void Gia_ManPrintPackingStats( Gia_Man_t * p );

7
src/aig/gia/giaHash.c
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@ -798,6 +798,13 @@ int Gia_ManHashAndMulti( Gia_Man_t * p, Vec_Int_t * vLits )
assert( Vec_IntSize(vLits) == 1 );
return Vec_IntEntry(vLits, 0);
}
int Gia_ManHashAndMulti2( Gia_Man_t * p, Vec_Int_t * vLits )
{
int i, iLit, iRes = 1;
Vec_IntForEachEntry( vLits, iLit, i )
iRes = Gia_ManHashAnd( p, iRes, iLit );
return iRes;
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///

4
src/base/abc/abcUtil.c
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@ -3235,7 +3235,7 @@ Gia_Man_t * Abc_NtkStrashToGia( Abc_Ntk_t * pNtk )
Gia_ManStop( pTemp );
return pNew;
}
Gia_Man_t * Abc_SopSynthesizeOne( char * pSop )
Gia_Man_t * Abc_SopSynthesizeOne( char * pSop, int fClp )
{
Abc_Ntk_t * pNtkNew, * pNtk;
Vec_Ptr_t * vSops;
@ -3253,6 +3253,8 @@ Gia_Man_t * Abc_SopSynthesizeOne( char * pSop )
pNtk = Abc_NtkCreateFromSops( "top", vSops );
Vec_PtrFree( vSops );
Abc_FrameReplaceCurrentNetwork( Abc_FrameReadGlobalFrame(), pNtk );
if ( fClp )
Cmd_CommandExecute( Abc_FrameGetGlobalFrame(), "clp; sop" );
Cmd_CommandExecute( Abc_FrameGetGlobalFrame(), "fx; strash; balance; dc2" );
pNtkNew = Abc_FrameReadNtk( Abc_FrameReadGlobalFrame() );
return Abc_NtkStrashToGia( pNtkNew );

55
src/sat/glucose/AbcGlucose.cpp
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@ -745,25 +745,25 @@ Vec_Int_t * Glucose_SolverFromAig2( Gia_Man_t * p, SimpSolver& S )
SeeAlso []
***********************************************************************/
Vec_Str_t * Glucose_GenerateCubes( bmcg_sat_solver * pSat[2], Vec_Int_t * vVars, Vec_Int_t * vVarMap )
Vec_Str_t * Glucose_GenerateCubes( bmcg_sat_solver * pSat[2], Vec_Int_t * vAllVars, Vec_Int_t * vVarMap )
{
int fCreatePrime = 1;
int nVars = Vec_IntSize(vVars);
int nVars = Vec_IntCountLarger( vVarMap, -1 );
Vec_Str_t * vSop = Vec_StrAlloc( 1000 );
Vec_Int_t * vLits = Vec_IntAlloc( nVars );
Vec_Int_t * vLits = Vec_IntAlloc( Vec_IntSize(vAllVars) );
Vec_Str_t * vCube = Vec_StrAlloc( nVars + 4 );
Vec_StrFill( vCube, nVars, '-' );
Vec_StrPrintF( vCube, " 1\n\0" );
while ( 1 )
{
int * pFinal, nFinal, iVar, i;
int * pFinal, nFinal, iVar, i, k = 0;
// generate onset minterm
int status = bmcg_sat_solver_solve( pSat[1], NULL, 0 );
if ( status == GLUCOSE_UNSAT )
break;
assert( status == GLUCOSE_SAT );
Vec_IntClear( vLits );
Vec_IntForEachEntry( vVars, iVar, i )
Vec_IntForEachEntry( vAllVars, iVar, i )
Vec_IntPush( vLits, Abc_Var2Lit(iVar, !bmcg_sat_solver_read_cex_varvalue(pSat[1], iVar)) );
// expand against offset
if ( fCreatePrime )
@ -785,9 +785,13 @@ Vec_Str_t * Glucose_GenerateCubes( bmcg_sat_solver * pSat[2], Vec_Int_t * vVars,
for ( i = 0; i < nFinal; i++ )
{
iVar = Vec_IntEntry(vVarMap, Abc_Lit2Var(pFinal[i]));
if ( iVar == -1 )
continue;
pFinal[k++] = pFinal[i];
assert( iVar >= 0 && iVar < nVars );
Vec_StrWriteEntry( vCube, iVar, (char)('0' + Abc_LitIsCompl(pFinal[i])) );
}
nFinal = k;
Vec_StrAppend( vSop, Vec_StrArray(vCube) );
//printf( "%4d : %s", Count++, Vec_StrArray(vCube) );
// add blocking clause
@ -805,7 +809,7 @@ void Glucose_GenerateSop( Gia_Man_t * p )
// generate CNF for the on-set and off-set
Cnf_Dat_t * pCnf = (Cnf_Dat_t *)Mf_ManGenerateCnf( p, 8 /*nLutSize*/, 0 /*fCnfObjIds*/, 0/*fAddOrCla*/, 0, 0/*verbose*/ );
int i,n,nVars = Gia_ManCiNum(p), Lit;//, Count = 0;
int i, n, nVars = Gia_ManCiNum(p), Lit;//, Count = 0;
int iFirstVar = pCnf->nVars - nVars;
assert( Gia_ManCoNum(p) == 1 );
for ( n = 0; n < 2; n++ )
@ -851,8 +855,9 @@ void Glucose_GenerateSop( Gia_Man_t * p )
SeeAlso []
***********************************************************************/
int Gia_ManSatAndCollect_rec( Gia_Man_t * p, int iObj, int(*pFuncCiToKeep)(int),
Vec_Int_t * vCiSatVarsToKeep, Vec_Int_t * vObjsUsed )
int Gia_ManSatAndCollect_rec( Gia_Man_t * p, int iObj,
Vec_Int_t * vObjsUsed, Vec_Int_t * vCisUsed, Vec_Int_t * vCiSatVarsToKeep,
int(*pFuncCiToKeep)(void *, int), void * pData )
{
Gia_Obj_t * pObj; int iVar;
if ( (iVar = Gia_ObjCopyArray(p, iObj)) > 0 )
@ -864,14 +869,16 @@ int Gia_ManSatAndCollect_rec( Gia_Man_t * p, int iObj, int(*pFuncCiToKeep)(int),
assert( Gia_ObjIsCand(pObj) );
if ( Gia_ObjIsAnd(pObj) )
{
Gia_ManSatAndCollect_rec( p, Gia_ObjFaninId0(pObj, iObj), pFuncCiToKeep, vCiSatVarsToKeep, vObjsUsed );
Gia_ManSatAndCollect_rec( p, Gia_ObjFaninId1(pObj, iObj), pFuncCiToKeep, vCiSatVarsToKeep, vObjsUsed );
Gia_ManSatAndCollect_rec( p, Gia_ObjFaninId0(pObj, iObj), vObjsUsed, vCisUsed, vCiSatVarsToKeep, pFuncCiToKeep, pData );
Gia_ManSatAndCollect_rec( p, Gia_ObjFaninId1(pObj, iObj), vObjsUsed, vCisUsed, vCiSatVarsToKeep, pFuncCiToKeep, pData );
}
else if ( pFuncCiToKeep && pFuncCiToKeep(Gia_ObjCioId(pObj)) )
else if ( pFuncCiToKeep && pFuncCiToKeep(pData, Gia_ObjCioId(pObj)) )
Vec_IntPush( vCiSatVarsToKeep, iVar );
if ( vCisUsed && Gia_ObjIsCi(pObj) )
Vec_IntPush( vCisUsed, iVar );
return iVar;
}
void Gia_ManQuantLoadCnf( Gia_Man_t * p, Vec_Int_t * vObjsUsed, bmcg_sat_solver * pSats[2] )
void Gia_ManQuantLoadCnf( Gia_Man_t * p, Vec_Int_t * vObjsUsed, bmcg_sat_solver * pSats[] )
{
Gia_Obj_t * pObj; int i;
bmcg_sat_solver_set_nvars( pSats[0], Vec_IntSize(vObjsUsed) );
@ -891,8 +898,8 @@ void Gia_ManQuantLoadCnf( Gia_Man_t * p, Vec_Int_t * vObjsUsed, bmcg_sat_solver
}
int Gia_ManFactorSop( Gia_Man_t * p, Vec_Int_t * vCiObjIds, Vec_Str_t * vSop, int fHash )
{
extern Gia_Man_t * Abc_SopSynthesizeOne( char * pSop );
Gia_Man_t * pMan = Abc_SopSynthesizeOne( Vec_StrArray(vSop) );
extern Gia_Man_t * Abc_SopSynthesizeOne( char * pSop, int fClp );
Gia_Man_t * pMan = Abc_SopSynthesizeOne( Vec_StrArray(vSop), 1 );
Gia_Obj_t * pObj; int i, Result;
assert( Gia_ManPiNum(pMan) == Vec_IntSize(vCiObjIds) );
Gia_ManConst0(pMan)->Value = 0;
@ -908,10 +915,11 @@ int Gia_ManFactorSop( Gia_Man_t * p, Vec_Int_t * vCiObjIds, Vec_Str_t * vSop, in
Gia_ManStop( pMan );
return Result;
}
int bmcg_sat_solver_quantify( bmcg_sat_solver * pSats[2], Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(int), int fHash )
int bmcg_sat_solver_quantify( bmcg_sat_solver * pSats[], Gia_Man_t * p, int iLit, int fHash, int(*pFuncCiToKeep)(void *, int), void * pData )
{
Vec_Int_t * vCiSatVarsToKeep = Vec_IntAlloc( 100 );
Vec_Int_t * vObjsUsed = Vec_IntAlloc( 100 );
Vec_Int_t * vObjsUsed = Vec_IntAlloc( 100 );
Vec_Int_t * vCisUsed = Vec_IntAlloc( 100 );
Vec_Int_t * vVarMap = NULL; Vec_Str_t * vSop = NULL;
int i, iVar, iVarLast, Lit, RetValue, Result = -1;
@ -919,7 +927,7 @@ int bmcg_sat_solver_quantify( bmcg_sat_solver * pSats[2], Gia_Man_t * p, int iLi
Gia_ManCleanCopyArray(p);
Vec_IntPush( vObjsUsed, 0 );
iVarLast = Gia_ManSatAndCollect_rec( p, Abc_Lit2Var(iLit), pFuncCiToKeep, vCiSatVarsToKeep, vObjsUsed );
iVarLast = Gia_ManSatAndCollect_rec( p, Abc_Lit2Var(iLit), vObjsUsed, vCisUsed, vCiSatVarsToKeep, pFuncCiToKeep, pData );
Gia_ManQuantLoadCnf( p, vObjsUsed, pSats );
Lit = Abc_Var2Lit( iVarLast, !Abc_LitIsCompl(iLit) );
@ -943,7 +951,7 @@ int bmcg_sat_solver_quantify( bmcg_sat_solver * pSats[2], Gia_Man_t * p, int iLi
Vec_IntForEachEntry( vCiSatVarsToKeep, iVar, i )
Vec_IntWriteEntry( vVarMap, iVar, i );
vSop = Glucose_GenerateCubes( pSats, vCiSatVarsToKeep, vVarMap );
vSop = Glucose_GenerateCubes( pSats, vCisUsed, vVarMap );
printf( "%s", Vec_StrArray(vSop) );
// remap SAT vars into obj IDs of CI nodes
@ -957,21 +965,22 @@ cleanup:
Gia_ObjSetCopyArray( p, iVar, -1 );
Vec_IntFree( vCiSatVarsToKeep );
Vec_IntFree( vObjsUsed );
Vec_IntFree( vCisUsed );
Vec_IntFreeP( &vVarMap );
Vec_StrFreeP( &vSop );
return Abc_LitNotCond( Result, Abc_LitIsCompl(iLit) );
}
int Gia_ManCiIsToKeep( int i )
int Gia_ManCiIsToKeep( void * pData, int i )
{
return i & 1;
return i % 5 != 0;
// return 1;
}
void Glucose_QuantifyAigTest( Gia_Man_t * p )
{
bmcg_sat_solver * pSats[2] = { bmcg_sat_solver_start(), bmcg_sat_solver_start() };
int iRes = bmcg_sat_solver_quantify( pSats, p, Gia_ObjFaninLit0p(p, Gia_ManPo(p, 0)), Gia_ManCiIsToKeep, 0 );
int iRes = bmcg_sat_solver_quantify( pSats, p, Gia_ObjFaninLit0p(p, Gia_ManPo(p, 0)), 0, Gia_ManCiIsToKeep, NULL );
Gia_ManAppendCo( p, iRes );
bmcg_sat_solver_stop( pSats[0] );
@ -997,8 +1006,8 @@ int bmcg_sat_solver_equiv_overlap_check( bmcg_sat_solver * pSat, Gia_Man_t * p,
if ( Vec_IntSize(&p->vCopies) == 0 )
Gia_ManCleanCopyArray(p);
Vec_IntPush( vObjsUsed, 0 );
iSatVar[0] = Gia_ManSatAndCollect_rec( p, Abc_Lit2Var(iLit0), NULL, NULL, vObjsUsed );
iSatVar[1] = Gia_ManSatAndCollect_rec( p, Abc_Lit2Var(iLit1), NULL, NULL, vObjsUsed );
iSatVar[0] = Gia_ManSatAndCollect_rec( p, Abc_Lit2Var(iLit0), vObjsUsed, NULL, NULL, NULL, NULL );
iSatVar[1] = Gia_ManSatAndCollect_rec( p, Abc_Lit2Var(iLit1), vObjsUsed, NULL, NULL, NULL, NULL );
iSatLit[0] = Abc_Var2Lit( iSatVar[0], Abc_LitIsCompl(iLit0) );
iSatLit[1] = Abc_Var2Lit( iSatVar[1], Abc_LitIsCompl(iLit1) );
Gia_ManQuantLoadCnf( p, vObjsUsed, pSats );

2
src/sat/glucose/AbcGlucose.h
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@ -93,7 +93,7 @@ extern int bmcg_sat_solver_learntnum( bmcg_sat_solver* s );
extern int bmcg_sat_solver_conflictnum( bmcg_sat_solver* s );
extern int bmcg_sat_solver_minimize_assumptions( bmcg_sat_solver * s, int * plits, int nlits, int pivot );
extern int bmcg_sat_solver_add_and( bmcg_sat_solver * s, int iVar, int iVar0, int iVar1, int fCompl0, int fCompl1, int fCompl );
extern int bmcg_sat_solver_quantify( bmcg_sat_solver * s[2], Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(int), int fHash );
extern int bmcg_sat_solver_quantify( bmcg_sat_solver * s[], Gia_Man_t * p, int iLit, int fHash, int(*pFuncCiToKeep)(void *, int), void * pData );
extern int bmcg_sat_solver_equiv_overlap_check( bmcg_sat_solver * s, Gia_Man_t * p, int iLit0, int iLit1, int fEquiv );
extern void Glucose_SolveCnf( char * pFilename, Glucose_Pars * pPars );