mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-14 12:58:44 +00:00
Code Activity

fix tmp_eq

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-09-28 14:27:46 -07:00
parent da124e4275
commit 67ae75bac7
1 changed files with 14 additions and 25 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
src/ast/euf/euf_egraph.cpp
View file

@ -600,15 +600,6 @@ namespace euf {
return true;
if (ra->get_sort() != rb->get_sort())
return true;
if (ra->num_parents() > rb->num_parents())
std::swap(ra, rb);
if (ra->num_parents() <= 3) {
for (enode* p : enode_parents(ra))
if (p->is_equality() && p->get_root()->value() == l_false &&
(rb == p->get_arg(0)->get_root() || rb == p->get_arg(1)->get_root()))
return true;
return false;
}
enode* r = tmp_eq(ra, rb);
if (r && r->get_root()->value() == l_false)
return true;
@ -622,21 +613,15 @@ namespace euf {
}
enode* egraph::tmp_eq(enode* a, enode* b) {
func_decl* f = nullptr;
for (unsigned i = m_eq_decls.size(); i-- > 0; ) {
auto e = m_eq_decls.get(i);
if (e->get_domain(0) == a->get_sort()) {
f = e;
break;
}
}
if (!f) {
app_ref eq(m.mk_eq(a->get_expr(), b->get_expr()), m);
m_eq_decls.push_back(eq->get_decl());
f = eq->get_decl();
}
enode* args[2] = { a, b };
return get_enode_eq_to(f, 2, args);
SASSERT(a->is_root());
SASSERT(b->is_root());
if (a->num_parents() > b->num_parents())
std::swap(a, b);
for (enode* p : enode_parents(a))
if (p->is_equality() &&
(b == p->get_arg(0)->get_root() || b == p->get_arg(1)->get_root()))
return p;
return nullptr;
}
/**
@ -736,7 +721,11 @@ namespace euf {
explain_eq(justifications, b, rb);
return sat::null_bool_var;
}
enode* r = tmp_eq(a, b);
enode* r = tmp_eq(ra, rb);
if (!r) {
std::cout << bpp(a) << " " << bpp(b) << "\n";
display(std::cout);
}
SASSERT(r && r->get_root()->value() == l_false);
explain_eq(justifications, r, r->get_root());
return r->get_root()->bool_var();