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fix #7745

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axioms for len(substr(...)) escaped due to nested rewriting
This commit is contained in:
Nikolaj Bjorner 2025-07-26 12:30:42 -07:00
parent 95be0cf9ba
commit 0528c86905
2 changed files with 28 additions and 7 deletions
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6
src/smt/theory_seq.cpp
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@ -439,7 +439,6 @@ final_check_status theory_seq::final_check_eh() {
}
bool theory_seq::set_empty(expr* x) {
add_axiom(~mk_eq(m_autil.mk_int(0), mk_len(x), false), mk_eq_empty(x));
return true;
@ -475,9 +474,8 @@ bool theory_seq::check_fixed_length(bool is_zero, bool check_long_strings) {
bool found = false;
for (unsigned i = 0; i < m_length.size(); ++i) {
expr* e = m_length.get(i);
if (fixed_length(e, is_zero, check_long_strings)) {
found = true;
}
if (fixed_length(e, is_zero, check_long_strings))
found = true;
}
return found;
}