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Bug fix in &gla.

This commit is contained in:
Alan Mishchenko 2012-06-29 13:50:01 -07:00
parent 7e9ccf7a23
commit 2c9827cb15
1 changed files with 10 additions and 0 deletions
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10
src/aig/gia/giaAbsGla.c
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@ -672,6 +672,8 @@ int Gla_ManGetOutLit( Gla_Man_t * p, int f )
Gla_Obj_t * pFanin = Gla_ManObj( p, p->pObjRoot->Fanins[0] );
int iSat = Vec_IntEntry( &pFanin->vFrames, f );
assert( iSat > 0 );
if ( f == 0 && pFanin->fRo && !p->pObjRoot->fCompl0 )
return -1;
return Abc_Var2Lit( iSat, p->pObjRoot->fCompl0 );
}
Vec_Int_t * Gla_ManUnsatCore( Gla_Man_t * p, int f, Vec_Int_t * vCla2Obj, sat_solver2 * pSat, int nConfMax, int fVerbose, int * piRetValue, int * pnConfls )
@ -682,6 +684,14 @@ Vec_Int_t * Gla_ManUnsatCore( Gla_Man_t * p, int f, Vec_Int_t * vCla2Obj, sat_so
int i, Entry, RetValue, clk = clock();
if ( piRetValue )
*piRetValue = 1;
// consider special case when PO points to the flop
// this leads to immediate conflict in the first timeframe
if ( iLit == -1 )
{
vCore = Vec_IntAlloc( 1 );
Vec_IntPush( vCore, p->pObjRoot->Fanins[0] );
return vCore;
}
// solve the problem
RetValue = sat_solver2_solve( pSat, &iLit, &iLit+1, (ABC_INT64_T)nConfMax, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0 );
if ( pnConfls )