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Do not evaluate quantified formulas in a model

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This commit is contained in:
Arie Gurfinkel 2018-06-27 16:40:49 -04:00
parent 704c19920d
commit 7c924c49f6
1 changed files with 10 additions and 1 deletions
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11
src/muz/spacer/spacer_context.cpp
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@ -1184,7 +1184,16 @@ expr_ref pred_transformer::get_origin_summary (model &mdl,
}
// bail out of if the model is insufficient
if (!mdl.is_true(summary)) return expr_ref(m);
// (skip quantified lemmas cause we can't validate them in the model)
// TBD: for quantified lemmas use current instances
flatten_and(summary);
for (auto *s : summary) {
if (!is_quantifier(s) && !mdl.is_true(s)) {
TRACE("spacer", tout << "Summary not true in the model: "
<< mk_pp(s, m) << "\n";);
return expr_ref(m);
}
}
// -- pick an implicant
expr_ref_vector lits(m);