mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-06-27 00:18:45 +00:00
Code Activity

fix #7446, by adding rewrite simplification

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-11-11 19:08:11 -08:00
parent 30ad22a4ef
commit 1cc808c58d
1 changed files with 4 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/ast/rewriter/seq_rewriter.cpp
View file

@ -2467,6 +2467,10 @@ br_status seq_rewriter::mk_str_le(expr* a, expr* b, expr_ref& result) {
br_status seq_rewriter::mk_str_lt(expr* a, expr* b, expr_ref& result) { br_status seq_rewriter::mk_str_lt(expr* a, expr* b, expr_ref& result) {
zstring as, bs; zstring as, bs;
if (str().is_empty(b)) {
result = m().mk_false();
return BR_DONE;
}
if (str().is_string(a, as) && str().is_string(b, bs)) { if (str().is_string(a, as) && str().is_string(b, bs)) {
unsigned sz = std::min(as.length(), bs.length()); unsigned sz = std::min(as.length(), bs.length());
for (unsigned i = 0; i < sz; ++i) { for (unsigned i = 0; i < sz; ++i) {