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-rw-r--r--src/base/abci/abcFx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/base/abci/abcFx.c b/src/base/abci/abcFx.c
index cf600148..5d887104 100644
--- a/src/base/abci/abcFx.c
+++ b/src/base/abci/abcFx.c
@@ -948,7 +948,7 @@ void Fx_ManUpdate( Fx_Man_t * p, int iDiv )
// if the input cover is not prime, it may happen that we are extracting divisor (x + !x)
// although it is not strictly correct, it seems to be fine to just skip such divisors
- if ( Abc_Lit2Var(Lit0) == Abc_Lit2Var(Lit1) )
+ if ( Abc_Lit2Var(Lit0) == Abc_Lit2Var(Lit1) && Vec_IntSize(Hsh_VecReadEntry(p->pHash, iDiv)) == 2 )
return;
// collect single-cube-divisor cubes