diff options
| -rw-r--r-- | src/prop/cnf_stream.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/prop/cnf_stream.cpp b/src/prop/cnf_stream.cpp index 9136a73c3..e95322348 100644 --- a/src/prop/cnf_stream.cpp +++ b/src/prop/cnf_stream.cpp @@ -364,6 +364,13 @@ SatLiteral TseitinCnfStream::toCNF(TNode node, bool negated) { case AND: nodeLit = handleAnd(node); break; + case EQUAL: + if(node[0].getType().isBoolean() && node[1].getType().isBoolean()) { + nodeLit = handleIff(node[0].iffNode(node[1])); + } else { + nodeLit = convertAtom(node); + } + break; default: { //TODO make sure this does not contain any boolean substructure |