mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-24 01:25:31 +00:00
Code Activity

disable bv delay until it is debugged #6324

Browse source 
regression introduced when filter for when to apply delay was fixed, but then it exercises delay tactic that isn't tested.
This commit is contained in:
Nikolaj Bjorner 2022-09-07 00:04:57 -07:00
parent 5322d4f241
commit 55d5af00cc
2 changed files with 7 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/sat/smt/bv_delay_internalize.cpp
View file

@ -145,9 +145,12 @@ namespace bv {
if (!check_mul_invertibility(e, args, r1))
return false;
#if 0
// unsound?
if (!check_lazy_mul(e, r1, r2))
return false;
#endif
// Some other possible approaches:
// algebraic rules:
// x*(y+z), and there are nodes for x*y or x*z -> x*(y+z) = x*y + x*z
@ -229,18 +232,17 @@ namespace bv {
bool solver::check_mul_zero(app* n, expr_ref_vector const& arg_values, expr* mul_value, expr* arg_value) {
SASSERT(mul_value != arg_value);
SASSERT(!(bv.is_zero(mul_value) && bv.is_zero(arg_value)));
if (bv.is_zero(arg_value)) {
if (bv.is_zero(arg_value) && false) {
unsigned sz = n->get_num_args();
expr_ref_vector args(m, sz, n->get_args());
for (unsigned i = 0; i < sz && !s().inconsistent(); ++i) {
args[i] = arg_value;
expr_ref r(m.mk_app(n->get_decl(), args), m);
set_delay_internalize(r, internalize_mode::init_bits_only_i); // do not bit-blast this multiplier.
args[i] = n->get_arg(i);
add_unit(eq_internalize(r, arg_value));
}
IF_VERBOSE(2, verbose_stream() << "delay internalize @" << s().scope_lvl() << "\n");
IF_VERBOSE(2, verbose_stream() << "delay internalize @" << s().scope_lvl() << " " << mk_pp(n, m) << "\n");
return false;
}
if (bv.is_zero(mul_value)) {