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fix #2618

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-10-06 19:44:33 -07:00
parent 7c10fb83a0
commit a8e7074ddd
2 changed files with 33 additions and 28 deletions
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4
src/smt/theory_seq.cpp
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@ -3701,8 +3701,8 @@ void theory_seq::add_stoi_axiom(expr* e) {
literal l = mk_simplified_literal(m_autil.mk_ge(e, m_autil.mk_int(-1)));
add_axiom(l);
// stoi("") = -1
add_axiom(mk_eq(m_util.str.mk_stoi(m_util.str.mk_empty(m.get_sort(s))), m_autil.mk_int(-1), false));
// stoi("") = -1
add_axiom(~mk_literal(m_util.str.mk_is_empty(s)), mk_eq(m_util.str.mk_stoi(s), m_autil.mk_int(-1), false));
}
void theory_seq::add_itos_axiom(expr* e) {