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add contextual simplification to bv-bounds-tactic

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-01-24 17:49:48 -08:00
parent 6c9358ce41
commit f100d2f4de
2 changed files with 48 additions and 0 deletions
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2
src/ast/simplifiers/bound_simplifier.cpp
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@ -72,11 +72,13 @@ br_status bound_simplifier::reduce_app(func_decl* f, unsigned num_args, expr* co
return BR_FAILED;
if (N > hi && lo >= 0) {
result = x;
TRACE("propagate-ineqs", tout << expr_ref(m.mk_app(f, num_args, args), m) << " -> " << result << "\n");
return BR_DONE;
}
if (2 * N > hi && lo >= N) {
result = a.mk_sub(x, a.mk_int(N));
m_rewriter(result);
TRACE("propagate-ineqs", tout << expr_ref(m.mk_app(f, num_args, args), m) << " -> " << result << "\n");
return BR_DONE;
}
IF_VERBOSE(2, verbose_stream() << "potentially missed simplification: " << mk_pp(x, m) << " " << lo << " " << hi << " not reduced\n");