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dbg proagate_eq

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-05-27 10:33:45 -07:00
parent 9dd8ebb474
commit dbd90e5f86
3 changed files with 7 additions and 9 deletions
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14
src/smt/seq_regex.cpp
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@ -280,21 +280,17 @@ namespace smt {
}
void seq_regex::propagate_eq(expr* r1, expr* r2) {
expr_ref r = symmetric_diff(r1, r2);
sort* seq_sort = nullptr;
VERIFY(u().is_re(r, seq_sort));
expr_ref emp(re().mk_empty(seq_sort), m);
expr_ref r = symmetric_diff(r1, r2);
expr_ref emp(re().mk_empty(m.get_sort(r)), m);
expr_ref is_empty = sk().mk_is_empty(r, emp);
th.add_axiom(~th.mk_eq(r, emp, false), th.mk_literal(is_empty));
th.add_axiom(~th.mk_eq(r1, r2, false), th.mk_literal(is_empty));
}
void seq_regex::propagate_ne(expr* r1, expr* r2) {
expr_ref r = symmetric_diff(r1, r2);
sort* seq_sort = nullptr;
VERIFY(u().is_re(r, seq_sort));
expr_ref emp(re().mk_empty(seq_sort), m);
expr_ref emp(re().mk_empty(m.get_sort(r)), m);
expr_ref is_non_empty = sk().mk_is_non_empty(r, emp);
th.add_axiom(th.mk_eq(r, emp, false), th.mk_literal(is_non_empty));
th.add_axiom(th.mk_eq(r1, r2, false), th.mk_literal(is_non_empty));
}
bool seq_regex::is_member(expr* r, expr* u) {