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fix #6127 again

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this time adding inheritance to the recfun plugin so it properly contains the recursive definitions from the source.
This commit is contained in:
Nikolaj Bjorner 2022-07-04 12:42:11 -07:00
parent 6ed2b444b5
commit 0353fc38ff
5 changed files with 86 additions and 17 deletions
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38
src/sat/smt/dt_solver.cpp
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@ -506,7 +506,7 @@ namespace dt {
return m_nodes;
}
ptr_vector<euf::enode> const& solver::get_seq_args(enode* n) {
ptr_vector<euf::enode> const& solver::get_seq_args(enode* n, enode*& sibling) {
m_nodes.reset();
m_todo.reset();
auto add_todo = [&](enode* n) {
@ -515,9 +515,15 @@ namespace dt {
m_todo.push_back(n);
}
};
for (enode* sib : euf::enode_class(n))
add_todo(sib);
for (enode* sib : euf::enode_class(n)) {
if (m_sutil.str.is_concat_of_units(sib->get_expr())) {
add_todo(sib);
sibling = sib;
break;
}
}
for (unsigned i = 0; i < m_todo.size(); ++i) {
enode* n = m_todo[i];
@ -551,10 +557,10 @@ namespace dt {
// collect equalities on all children that may have been used.
bool found = false;
auto add = [&](enode* arg) {
if (arg->get_root() == child->get_root()) {
if (arg != child)
m_used_eqs.push_back(enode_pair(arg, child));
auto add = [&](enode* seq_arg) {
if (seq_arg->get_root() == child->get_root()) {
if (seq_arg != child)
m_used_eqs.push_back(enode_pair(seq_arg, child));
found = true;
}
};
@ -564,11 +570,14 @@ namespace dt {
if (m_autil.is_array(s) && dt.is_datatype(get_array_range(s)))
for (enode* aarg : get_array_args(arg))
add(aarg);
}
sort* se;
if (m_sutil.is_seq(child->get_sort(), se) && dt.is_datatype(se)) {
for (enode* aarg : get_seq_args(child))
add(aarg);
sort* se;
if (m_sutil.is_seq(arg->get_sort(), se) && dt.is_datatype(se)) {
enode* sibling = nullptr;
for (enode* seq_arg : get_seq_args(arg, sibling))
add(seq_arg);
if (sibling && sibling != arg)
m_used_eqs.push_back(enode_pair(arg, sibling));
}
}
VERIFY(found);
@ -636,12 +645,13 @@ namespace dt {
// explore `arg` (with parent)
expr* earg = arg->get_expr();
sort* s = earg->get_sort(), *se;
enode* sibling;
if (dt.is_datatype(s)) {
m_parent.insert(arg->get_root(), parent);
oc_push_stack(arg);
}
else if (m_sutil.is_seq(s, se) && dt.is_datatype(se)) {
for (enode* sarg : get_seq_args(arg))
for (enode* sarg : get_seq_args(arg, sibling))
if (process_arg(sarg))
return true;
}