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fix #3846, another bug in eq2bv-tactic

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-09 19:55:40 -07:00
parent 066413516f
commit addbe55823
2 changed files with 9 additions and 83 deletions
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74
src/tactic/bv/bv_bounds_tactic.cpp
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@ -241,64 +241,6 @@ namespace {
return false;
}
#if 0
expr_set* get_expr_vars(expr* t) {
unsigned id = t->get_id();
m_expr_vars.reserve(id + 1);
expr_set*& entry = m_expr_vars[id];
if (entry)
return entry;
expr_set* set = alloc(expr_set);
entry = set;
if (!m_bv.is_numeral(t))
set->insert(t, true);
if (!is_app(t))
return set;
app* a = to_app(t);
for (unsigned i = 0; i < a->get_num_args(); ++i) {
expr_set* set_arg = get_expr_vars(a->get_arg(i));
for (expr_set::iterator I = set_arg->begin(), E = set_arg->end(); I != E; ++I) {
set->insert(I->m_key, true);
}
}
return set;
}
#endif
#if 0
expr_cnt* get_expr_bounds(expr* t) {
unsigned id = t->get_id();
m_bound_exprs.reserve(id + 1);
expr_cnt*& entry = m_bound_exprs[id];
if (entry)
return entry;
expr_cnt* set = alloc(expr_cnt);
entry = set;
if (!is_app(t))
return set;
interval b;
expr* e;
if (is_bound(t, e, b)) {
set->insert_if_not_there2(e, 0)->get_data().m_value++;
}
app* a = to_app(t);
for (unsigned i = 0; i < a->get_num_args(); ++i) {
expr_cnt* set_arg = get_expr_bounds(a->get_arg(i));
for (expr_cnt::iterator I = set_arg->begin(), E = set_arg->end(); I != E; ++I) {
set->insert_if_not_there2(I->m_key, 0)->get_data().m_value += I->m_value;
}
}
return set;
}
#endif
public:
bv_bounds_simplifier(ast_manager& m, params_ref const& p) : m(m), m_params(p), m_bv(m) {
@ -475,15 +417,6 @@ namespace {
if (contains(t, v.m_key)) return true;
}
#if 0
expr_set* used_exprs = get_expr_vars(t);
for (map::iterator I = m_bound.begin(), E = m_bound.end(); I != E; ++I) {
if (contains(t, I->m_key)) return true;
if (I->m_value.is_singleton() && used_exprs->contains(I->m_key))
return true;
}
#endif
expr* t1;
interval b;
// skip common case: single bound constraint without any context for simplification
@ -494,13 +427,6 @@ namespace {
if (contains_bound(t)) {
return true;
}
#if 0
expr_cnt* bounds = get_expr_bounds(t);
for (expr_cnt::iterator I = bounds->begin(), E = bounds->end(); I != E; ++I) {
if (I->m_value > 1 || m_bound.contains(I->m_key))
return true;
}
#endif
return false;
}