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return unknown if m_array_weak was used and result is satisfiable

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-08-02 00:20:41 +08:00
parent 3f032e85e0
commit 0a29002c2f
6 changed files with 61 additions and 18 deletions
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27
src/smt/theory_array.cpp
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@ -100,10 +100,14 @@ namespace smt {
for (enode* n : d->m_stores) {
instantiate_axiom2a(s, n);
}
if (!m_params.m_array_weak && !m_params.m_array_delay_exp_axiom && d->m_prop_upward) {
if (!m_params.m_array_delay_exp_axiom && d->m_prop_upward) {
for (enode* store : d->m_parent_stores) {
SASSERT(is_store(store));
if (!m_params.m_array_cg || store->is_cgr()) {
if (m_params.m_array_weak) {
found_unsupported_op(store->get_owner());
break;
}
instantiate_axiom2b(s, store);
}
}
@ -118,10 +122,17 @@ namespace smt {
var_data * d = m_var_data[v];
d->m_parent_stores.push_back(s);
m_trail_stack.push(push_back_trail<theory_array, enode *, false>(d->m_parent_stores));
if (!m_params.m_array_weak && !m_params.m_array_delay_exp_axiom && d->m_prop_upward)
for (enode* n : d->m_parent_selects)
if (!m_params.m_array_cg || n->is_cgr())
if (d->m_prop_upward && !m_params.m_array_delay_exp_axiom) {
for (enode* n : d->m_parent_selects) {
if (!m_params.m_array_cg || n->is_cgr()) {
if (m_params.m_array_weak) {
found_unsupported_op(s);
break;
}
instantiate_axiom2b(n, s);
}
}
}
}
bool theory_array::instantiate_axiom2b_for(theory_var v) {
@ -138,15 +149,17 @@ namespace smt {
\brief Mark v for upward propagation. That is, enables the propagation of select(v, i) to store(v,j,k).
*/
void theory_array::set_prop_upward(theory_var v) {
if (m_params.m_array_weak)
return;
v = find(v);
var_data * d = m_var_data[v];
if (!d->m_prop_upward) {
TRACE("array", tout << "#" << v << "\n";);
m_trail_stack.push(reset_flag_trail<theory_array>(d->m_prop_upward));
d->m_prop_upward = true;
if (!m_params.m_array_delay_exp_axiom)
if (m_params.m_array_weak) {
found_unsupported_op(v);
return;
}
if (!m_params.m_array_delay_exp_axiom)
instantiate_axiom2b_for(v);
for (enode * n : d->m_stores)
set_prop_upward(n);