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-rw-r--r--src/sat/aig/fraigCore.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sat/aig/fraigCore.c b/src/sat/aig/fraigCore.c
index e7df1335..decf05ee 100644
--- a/src/sat/aig/fraigCore.c
+++ b/src/sat/aig/fraigCore.c
@@ -68,6 +68,8 @@ Aig_ProofType_t Aig_FraigProve( Aig_Man_t * pMan )
// create equivalence classes
Aig_EngineSimulateRandomFirst( pMan );
+ // reduce equivalence classes using simulation
+ Aig_EngineSimulateFirst( pMan );
return RetValue;
}