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Bug fix in interpolation (false positive if property fails in frame 0).

This commit is contained in:
Alan Mishchenko 2011-08-14 20:04:08 +07:00
parent 3344a46b26
commit e21d307544
2 changed files with 17 additions and 4 deletions
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4
src/aig/int/intCore.c
View File

@ -93,12 +93,14 @@ int Inter_ManPerformInterpolation( Aig_Man_t * pAig, Inter_ManParams_t * pPars,
assert( Saig_ManPoNum(pAig)-Saig_ManConstrNum(pAig) == 1 );
if ( pPars->fVerbose && Saig_ManConstrNum(pAig) )
printf( "Performing interpolation with %d constraints...\n", Saig_ManConstrNum(pAig) );
/*
if ( Inter_ManCheckInitialState(pAig) )
{
*piFrame = 0;
printf( "Property trivially fails in the initial state.\n" );
return 0;
}
/*
if ( Inter_ManCheckAllStates(pAig) )
{
printf( "Property trivially holds in all states.\n" );

17
src/aig/int/intUtil.c
View File

@ -46,17 +46,28 @@ ABC_NAMESPACE_IMPL_START
int Inter_ManCheckInitialState( Aig_Man_t * p )
{
Cnf_Dat_t * pCnf;
Aig_Obj_t * pObj;
sat_solver * pSat;
int status;
int i, status;
int clk = clock();
pCnf = Cnf_Derive( p, Saig_ManRegNum(p) );
pSat = (sat_solver *)Cnf_DataWriteIntoSolver( pCnf, 1, 1 );
Cnf_DataFree( pCnf );
if ( pSat == NULL )
{
Cnf_DataFree( pCnf );
return 0;
}
status = sat_solver_solve( pSat, NULL, NULL, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0 );
sat_solver_delete( pSat );
ABC_PRT( "Time", clock() - clk );
if ( status == l_True )
{
p->pSeqModel = Abc_CexAlloc( Aig_ManRegNum(p), Saig_ManPiNum(p), 1 );
Saig_ManForEachPi( p, pObj, i )
if ( sat_solver_var_value( pSat, pCnf->pVarNums[Aig_ObjId(pObj)] ) )
Aig_InfoSetBit( p->pSeqModel->pData, Aig_ManRegNum(p) + i );
}
Cnf_DataFree( pCnf );
sat_solver_delete( pSat );
return status == l_True;
}