mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-24 01:25:31 +00:00
Code Activity

filter length limits to be non-skolems and under concat/""/unit

Browse source
This commit is contained in:
Nikolaj Bjorner 2022-09-15 07:41:00 -07:00
parent af258d1720
commit 088898834c
3 changed files with 43 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/smt/theory_seq.cpp
View file

@ -1538,10 +1538,23 @@ void theory_seq::add_length(expr* l) {
Add length limit restrictions to sequence s.
*/
void theory_seq::add_length_limit(expr* s, unsigned k, bool is_searching) {
if (m_sk.is_indexof_left(s))
if (m_util.str.is_concat(s)) {
for (expr* e : *to_app(s))
add_length_limit(e, k, is_searching);
return;
if (m_sk.is_indexof_right(s))
}
if (m_util.str.is_unit(s))
return;
if (m_util.str.is_empty(s))
return;
if (m_sk.is_skolem(s)) {
for (expr* e : *to_app(s))
if (m_util.is_seq(e) || m_sk.is_skolem(e))
add_length_limit(e, k, is_searching);
return;
}
expr_ref lim_e = m_ax.add_length_limit(s, k);
unsigned k0 = 0;
if (m_length_limit_map.find(s, k0)) {