mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-10-09 01:11:55 +00:00
Code Activity

better behavior on disequality and branch selection

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-07-30 22:10:33 -07:00
parent 02084dc95b
commit 4392c03b57
2 changed files with 8 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/smt/theory_seq.cpp
View file

@ -3101,7 +3101,12 @@ void theory_seq::new_diseq_eh(theory_var v1, theory_var v2) {
}
dependency* dep = m_dm.mk_leaf(assumption(~lit));
m_nqs.push_back(ne(e1, e2, dep));
expr_ref len1(m_util.str.mk_length(e1), m);
expr_ref len2(m_util.str.mk_length(e2), m);
m_rewrite(len1);
m_rewrite(len2);
literal eqlen = mk_eq(len1, len2, false);
m_nqs.push_back(ne(e1, e2, eqlen, dep));
if (ctx.get_assignment(lit) != l_undef) {
solve_nqs(m_nqs.size() - 1);
}