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fix #2387, add ite-hoist rewriting, allow assumptions to be compound expressions

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-07-09 07:40:20 +01:00
parent cd93cdd819
commit 88aa689a70
6 changed files with 118 additions and 33 deletions
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2
src/smt/theory_seq.cpp
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@ -5961,7 +5961,7 @@ void theory_seq::add_lt_axiom(expr* n) {
add_axiom(lt, eq, e1xcy);
add_axiom(lt, eq, emp2, ltdc);
add_axiom(lt, eq, emp2, e2xdz);
if (e1->get_id() <= e2->get_id() || true) {
if (e1->get_id() <= e2->get_id()) {
literal gt = mk_literal(m_util.str.mk_lex_lt(e2, e1));
add_axiom(lt, eq, gt);
add_axiom(~eq, ~lt);