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-rw-r--r--src/sat/bsat/satProof.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sat/bsat/satProof.c b/src/sat/bsat/satProof.c
index d54f94b4..7613e022 100644
--- a/src/sat/bsat/satProof.c
+++ b/src/sat/bsat/satProof.c
@@ -397,6 +397,8 @@ int Sat_ProofReduce( Vec_Set_t * vProof, void * pRoots, int hProofPivot )
static clock_t TimeTotal = 0;
int RetValue;
+Sat_ProofCheck0( vProof );
+
// collect visited nodes
nSize = Proof_MarkUsedRec( vProof, vRoots );
vUsed = Vec_PtrAlloc( nSize );