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-rw-r--r--src/base/abci/abcSat.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/base/abci/abcSat.c b/src/base/abci/abcSat.c
index 5376444b..f7400313 100644
--- a/src/base/abci/abcSat.c
+++ b/src/base/abci/abcSat.c
@@ -400,6 +400,10 @@ int Abc_NtkMiterSatCreateInt( solver * pSat, Abc_Ntk_t * pNtk )
assert( Abc_NtkIsStrash(pNtk) );
+ // clean the CI node pointers
+ Abc_NtkForEachCi( pNtk, pNode, i )
+ pNode->pCopy = NULL;
+
// start the data structures
vNodes = Vec_PtrAlloc( 1000 ); // the nodes corresponding to vars in the solver
vSuper = Vec_PtrAlloc( 100 ); // the nodes belonging to the given implication supergate