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-rw-r--r--src/aig/gia/giaDup.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/aig/gia/giaDup.c b/src/aig/gia/giaDup.c
index 3672f7c3..62586103 100644
--- a/src/aig/gia/giaDup.c
+++ b/src/aig/gia/giaDup.c
@@ -521,6 +521,7 @@ Gia_Man_t * Gia_ManDupMarked( Gia_Man_t * p )
int i, nRos = 0, nRis = 0;
Gia_ManFillValue( p );
pNew = Gia_ManStart( Gia_ManObjNum(p) );
+ pNew->nConstrs = p->nConstrs;
pNew->pName = Gia_UtilStrsav( p->pName );
Gia_ManConst0(p)->Value = 0;
Gia_ManForEachObj1( p, pObj, i )