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-rw-r--r--src/base/abci/abc.c2
-rw-r--r--src/sat/cnf/cnfUtil.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c
index 0fb139d3..e5b6e49d 100644
--- a/src/base/abci/abc.c
+++ b/src/base/abci/abc.c
@@ -21839,7 +21839,7 @@ int Abc_CommandDSat( Abc_Frame_t * pAbc, int argc, char ** argv )
return 0;
}
fclose( pFile );
- Cnf_DataSolveFromFile( pFileName, nConfLimit, nLearnedStart, nLearnedDelta, nLearnedPerce, fVerbose, &pModel, Abc_NtkPiNum(pNtk) );
+ Cnf_DataSolveFromFile( pFileName, nConfLimit, nLearnedStart, nLearnedDelta, nLearnedPerce, fVerbose, &pModel, pNtk ? Abc_NtkPiNum(pNtk) : 0 );
if ( pModel && pNtk )
{
int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pModel );
diff --git a/src/sat/cnf/cnfUtil.c b/src/sat/cnf/cnfUtil.c
index a5037718..73bcd8a1 100644
--- a/src/sat/cnf/cnfUtil.c
+++ b/src/sat/cnf/cnfUtil.c
@@ -449,7 +449,7 @@ int Cnf_DataSolveFromFile( char * pFileName, int nConfLimit, int nLearnedStart,
//Abc_Print( -1, "\n" );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
// derive SAT assignment
- if ( RetValue == 0 )
+ if ( RetValue == 0 && nPis > 0 )
{
*ppModel = ABC_ALLOC( int, nPis );
for ( i = 0; i < nPis; i++ )