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https://github.com/Z3Prover/z3
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address some crashes reported by Caleb
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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@ -525,7 +525,8 @@ namespace smt {
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lits.reset();
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lits.push_back(~lit);
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if (!m.is_true(cond)) {
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lits.push_back(th.mk_literal(mk_forall(m, hd, mk_not(m, cond))));
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expr_ref ncond(mk_not(m, cond), m);
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lits.push_back(th.mk_literal(mk_forall(m, hd, ncond)));
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}
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expr_ref is_empty1 = sk().mk_is_empty(p.second, re().mk_union(u, r));
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lits.push_back(th.mk_literal(is_empty1));
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@ -128,7 +128,7 @@ namespace smt {
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enode* theory::ensure_enode(expr* e) {
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if (!ctx.e_internalized(e)) {
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ctx.internalize(e, false);
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ctx.internalize(e, is_quantifier(e));
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}
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enode* n = ctx.get_enode(e);
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ctx.mark_as_relevant(n);
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@ -720,7 +720,7 @@ bool theory_seq::is_solved() {
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}
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#if 0
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// debug code
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// debug code
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for (enode* n : ctx.enodes()) {
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expr* e = nullptr;
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rational len1, len2;
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@ -2881,8 +2881,11 @@ literal theory_seq::mk_simplified_literal(expr * _e) {
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literal theory_seq::mk_literal(expr* _e) {
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expr_ref e(_e, m);
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bool is_not = m.is_not(_e, _e);
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ensure_enode(_e);
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if (!ctx.e_internalized(_e)) {
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ctx.internalize(_e, is_quantifier(_e));
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}
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literal lit = ctx.get_literal(_e);
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ctx.mark_as_relevant(lit);
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if (is_not) lit.neg();
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return lit;
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}
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