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Scalable gate-level abstraction.

This commit is contained in:
Alan Mishchenko 2012-08-03 21:44:00 -07:00
parent 5760c3225d
commit a01b479013
3 changed files with 24 additions and 6 deletions
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10
src/aig/gia/giaAbsGla2.c
View File

@ -1549,8 +1549,8 @@ int Ga2_ManPerform( Gia_Man_t * pAig, Gia_ParVta_t * pPars )
continue;
assert( Lit > 1 );
// check for counter-examples
// if ( p->nSatVars > sat_solver2_nvars(p->pSat) )
// sat_solver2_setnvars( p->pSat, p->nSatVars );
if ( p->nSatVars > sat_solver2_nvars(p->pSat) )
sat_solver2_setnvars( p->pSat, p->nSatVars );
nVarsOld = p->nSatVars;
for ( c = 0; ; c++ )
{
@ -1666,9 +1666,9 @@ int Ga2_ManPerform( Gia_Man_t * pAig, Gia_ParVta_t * pPars )
// if abstraction grew more than a certain percentage, force a restart
if ( pPars->nRatioMax == 0 )
break;
if ( Vec_IntSize(p->vAbs) - nAbsOld >= nAbsOld * pPars->nRatioMax / 100 )
if ( (f > 20 || Vec_IntSize(p->vAbs) > 100) && Vec_IntSize(p->vAbs) - nAbsOld >= nAbsOld * pPars->nRatioMax / 100 )
{
if ( p->pPars->fVeryVerbose )
if ( p->pPars->fVerbose )
Abc_Print( 1, "Forcing restart because abstraction grew from %d to %d (more than %d %%).\n",
nAbsOld, Vec_IntSize(p->vAbs), pPars->nRatioMax );
break;
@ -1685,7 +1685,7 @@ int Ga2_ManPerform( Gia_Man_t * pAig, Gia_ParVta_t * pPars )
}
finish:
Prf_ManStopP( &p->pSat->pPrf2 );
if ( p->pPars->fVeryVerbose )
if ( p->pPars->fVerbose )
Abc_Print( 1, "\n" );
// analize the results
if ( pAig->pCexSeq == NULL )

2
src/aig/gia/giaAbsVta.c
View File

@ -158,7 +158,7 @@ void Gia_VtaSetDefaultParams( Gia_ParVta_t * p )
p->nLearnedPerce = 40; // max number of learned clauses
p->nTimeOut = 0; // timeout in seconds
p->nRatioMin = 10; // stop when less than this % of object is abstracted
p->nRatioMax = 0; // restart when more than this % of object is abstracted
p->nRatioMax = 30; // restart when more than this % of object is abstracted
p->fUseTermVars = 0; // use terminal variables
p->fUseRollback = 0; // use rollback to the starting number of frames
p->fVerbose = 0; // verbose flag

18
src/aig/gia/giaUtil.c
View File

@ -847,6 +847,24 @@ int Gia_NodeRef_rec( Gia_Man_t * p, Gia_Obj_t * pNode )
return Counter + 1;
}
/**Function*************************************************************
Synopsis [References the node's MFFC.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Gia_ManPoMffcSize( Gia_Man_t * p )
{
Gia_ManCreateRefs( p );
return Gia_NodeDeref_rec( p, Gia_ObjFanin0(Gia_ManPo(p, 0)) );
}
/**Function*************************************************************
Synopsis [Returns the number of internal nodes in the MFFC.]