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more rewrite rules

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-02-18 22:14:53 -08:00
parent b2eb248bad
commit 27584d68db
3 changed files with 96 additions and 25 deletions
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11
src/smt/seq_axioms.cpp
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@ -69,6 +69,17 @@ literal seq_axioms::mk_literal(expr* _e) {
}
void seq_axioms::add_clause(expr_ref_vector const& clause) {
expr* a = nullptr, *b = nullptr;
if (clause.size() == 1 && m.is_eq(clause[0], a, b)) {
enode* n1 = th.ensure_enode(a);
enode* n2 = th.ensure_enode(b);
justification* js =
ctx().mk_justification(
ext_theory_eq_propagation_justification(
th.get_id(), ctx().get_region(), 0, nullptr, 0, nullptr, n1, n2));
ctx().assign_eq(n1, n2, eq_justification(js));
return;
}
literal lits[5] = { null_literal, null_literal, null_literal, null_literal, null_literal };
unsigned idx = 0;
for (expr* e : clause) {