Corner-case bug fixed in CNF generation.

c3dccf30 · Alan Mishchenko · feebac41 · c3dccf30
Commit c3dccf30 authored Dec 28, 2017 by Alan Mishchenko
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src/aig/gia/giaMf.c
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--- a/src/aig/gia/giaMf.c
+++ b/src/aig/gia/giaMf.c
@@ -425,6 +425,7 @@ Cnf_Dat_t * Mf_ManDeriveCnf( Mf_Man_t * p, int fCnfObjIds, int fAddOrCla )
        {
            pCnf->pClauses[iCla++] = pCnf->pClauses[0] + iLit;
            pCnf->pClauses[0][iLit++] = Abc_Var2Lit(pCnfIds[Id], !fComplLast);
+            assert( pCnf->vMapping == NULL ); // bug fix does not handle generated mapping
            continue;
        }
        for ( k = 0; k < Mf_CutSize(pCut); k++ )