diff options
Diffstat (limited to 'src/theory/booleans')
| -rw-r--r-- | src/theory/booleans/theory_bool_rewriter.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/theory/booleans/theory_bool_rewriter.cpp b/src/theory/booleans/theory_bool_rewriter.cpp index c53610efa..1c5eab364 100644 --- a/src/theory/booleans/theory_bool_rewriter.cpp +++ b/src/theory/booleans/theory_bool_rewriter.cpp @@ -316,6 +316,14 @@ RewriteResponse TheoryBoolRewriter::preRewrite(TNode n) { // return RewriteResponse(REWRITE_AGAIN, resp); // } } + + if (n[0].getKind() == kind::NOT) + { + // ite(not(c), x, y) ---> ite(c, y, x) + return RewriteResponse( + REWRITE_AGAIN, nodeManager->mkNode(kind::ITE, n[0][0], n[2], n[1])); + } + // else if (n[2].isConst()) { // if(n[2] == ff){ // Node resp = (n[0]).andNode(n[1]); |