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z3str3: check relevancy of subformulas for negated non-relevant formulas in bitvector model construction

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Murphy Berzish 2020-02-27 18:56:58 -05:00 committed by Nikolaj Bjorner
parent f18bd7bf08
commit 01299dacbf
1 changed files with 12 additions and 2 deletions
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14
src/smt/theory_str_mc.cpp
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@ -882,8 +882,18 @@ namespace smt {
for (expr * f : formulas) {
if (!get_context().is_relevant(f)) {
TRACE("str_fl", tout << "skip reducing formula " << mk_pp(f, m) << ", not relevant" << std::endl;);
continue;
expr * subformula = nullptr;
if (m.is_not(f, subformula)) {
if (!get_context().is_relevant(subformula)) {
TRACE("str_fl", tout << "skip reducing formula " << mk_pp(f, m) << ", not relevant (and neither is its subformula)" << std::endl;);
continue;
} else {
TRACE("str_fl", tout << "considering formula " << mk_pp(f, m) << ", its subformula is relevant but it is not" << std::endl;);
}
} else {
TRACE("str_fl", tout << "skip reducing formula " << mk_pp(f, m) << ", not relevant" << std::endl;);
continue;
}
}
// reduce string formulas only. ignore others
sort * fSort = m.get_sort(f);