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batch length enforcement

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-10-06 15:25:33 -07:00
parent b53f66bf2f
commit f9b6e4e247
1 changed files with 11 additions and 2 deletions
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13
src/smt/theory_seq.cpp
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@ -1904,16 +1904,25 @@ bool theory_seq::check_length_coherence() {
return true;
}
}
for (expr* l : m_length) {
bool change = false;
unsigned sz = m_length.size();
for (unsigned i = 0; i < sz; ++i) {
expr* l = m_length.get(i);
expr* e = nullptr;
VERIFY(m_util.str.is_length(l, e));
if (check_length_coherence(e)) {
return true;
}
enode* n = ensure_enode(e);
enode* r = n->get_root();
if (r != n && has_length(r->get_owner())) {
continue;
}
if (add_length_to_eqc(e)) {
return true;
change = true;
}
}
return change;
}
bool theory_seq::fixed_length(bool is_zero) {