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fix #3961 fix #3940

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-14 17:33:44 -07:00
parent 7ed9996fc0
commit 835b57b775
9 changed files with 100 additions and 97 deletions
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8
src/ast/rewriter/bool_rewriter.cpp
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@ -646,13 +646,13 @@ br_status bool_rewriter::try_ite_value(app * ite, app * val, expr_ref & result)
}
expr* cond2 = nullptr, *t2 = nullptr, *e2 = nullptr;
if (m().is_ite(t, cond2, t2, e2) && m().is_value(t2) && m().is_value(e2)) {
VERIFY(BR_FAILED != try_ite_value(to_app(t), val, result));
if (m().is_ite(t, cond2, t2, e2) && m().is_value(t2) && m().is_value(e2) &&
BR_FAILED != try_ite_value(to_app(t), val, result)) {
result = m().mk_ite(cond, result, mk_eq(e, val));
return BR_REWRITE2;
}
if (m().is_ite(e, cond2, t2, e2) && m().is_value(t2) && m().is_value(e2)) {
VERIFY(BR_FAILED != try_ite_value(to_app(e), val, result));
if (m().is_ite(e, cond2, t2, e2) && m().is_value(t2) && m().is_value(e2) &&
BR_FAILED != try_ite_value(to_app(e), val, result)) {
result = m().mk_ite(cond, mk_eq(t, val), result);
return BR_REWRITE2;
}