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add missing tactic descriptions, add rewrite for tamagochi

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-01-08 13:32:26 -08:00
parent 95cb06d8cf
commit fcea32344e
19 changed files with 147 additions and 49 deletions
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4
src/ast/rewriter/bool_rewriter.cpp
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@ -857,6 +857,7 @@ br_status bool_rewriter::mk_ite_core(expr * c, expr * t, expr * e, expr_ref & re
s = true;
}
// (ite c (ite c t1 t2) t3) ==> (ite c t1 t3
if (m().is_ite(t) && to_app(t)->get_arg(0) == c) {
// Remark: (ite c (ite (not c) t1 t2) t3) ==> (ite c t2 t3) does not happen if applying rewrites bottom up
@ -943,7 +944,6 @@ br_status bool_rewriter::mk_ite_core(expr * c, expr * t, expr * e, expr_ref & re
}
#if 0
expr* t1, *t2;
// (ite c (not (= t1 t2)) t1) ==> (not (= t1 (and c t2)))
if (m().is_not(t, t1) && m().is_eq(t1, t1, t2) && e == t1) {
expr_ref a(m());
@ -960,6 +960,8 @@ br_status bool_rewriter::mk_ite_core(expr * c, expr * t, expr * e, expr_ref & re
#endif
if (m().is_ite(t) && m_ite_extra_rules && m_elim_ite) {
// (ite c1 (ite c2 t1 t2) t1) ==> (ite (and c1 (not c2)) t2 t1)
if (e == to_app(t)->get_arg(1)) {