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fix #3860 fix #3861

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-08 16:09:37 -07:00
parent c5e08f0444
commit e1d2480a8b
6 changed files with 67 additions and 48 deletions
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36
src/ast/rewriter/rewriter_def.h
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@ -47,8 +47,7 @@ void rewriter_tpl<Config>::process_var(var * v) {
tout << "index " << index << " bindings " << m_bindings.size() << "\n";
display_bindings(tout););
SASSERT(v->get_sort() == m().get_sort(r));
if (!is_ground(r) && m_shifts[index] != m_bindings.size()) {
if (!is_ground(r) && m_shifts[index] != m_bindings.size()) {
unsigned shift_amount = m_bindings.size() - m_shifts[index];
expr* c = get_cached(r, shift_amount);
if (c) {
@ -58,8 +57,7 @@ void rewriter_tpl<Config>::process_var(var * v) {
expr_ref tmp(m());
m_shifter(r, shift_amount, tmp);
result_stack().push_back(tmp);
TRACE("rewriter", tout << "shift: " << shift_amount << " idx: " << idx << " --> " << tmp << "\n";
display_bindings(tout););
TRACE("rewriter", display_bindings(tout << "shift: " << shift_amount << " idx: " << idx << " --> " << tmp << "\n"););
cache_shifted_result(r, shift_amount, tmp);
}
}
@ -514,14 +512,12 @@ void rewriter_tpl<Config>::process_quantifier(quantifier * q, frame & fr) {
SASSERT(fr.m_state == PROCESS_CHILDREN);
unsigned num_decls = q->get_num_decls();
if (fr.m_i == 0) {
if (!ProofGen) {
begin_scope();
m_root = q->get_expr();
unsigned sz = m_bindings.size();
for (unsigned i = 0; i < num_decls; i++) {
m_bindings.push_back(nullptr);
m_shifts.push_back(sz);
}
begin_scope();
m_root = q->get_expr();
unsigned sz = m_bindings.size();
for (unsigned i = 0; i < num_decls; i++) {
m_bindings.push_back(nullptr);
m_shifts.push_back(sz);
}
m_num_qvars += num_decls;
}
@ -595,17 +591,11 @@ void rewriter_tpl<Config>::process_quantifier(quantifier * q, frame & fr) {
result_stack().shrink(fr.m_spos);
result_stack().push_back(m_r.get());
SASSERT(m().get_sort(q) == m().get_sort(m_r));
if (!ProofGen) {
SASSERT(num_decls <= m_bindings.size());
m_bindings.shrink(m_bindings.size() - num_decls);
m_shifts.shrink(m_shifts.size() - num_decls);
end_scope();
cache_result<ProofGen>(q, m_r, m_pr, fr.m_cache_result);
}
else {
cache_result<ProofGen>(q, m_r, m_pr, fr.m_cache_result);
m_pr = nullptr;
}
SASSERT(num_decls <= m_bindings.size());
m_bindings.shrink(m_bindings.size() - num_decls);
m_shifts.shrink(m_shifts.size() - num_decls);
end_scope();
cache_result<ProofGen>(q, m_r, m_pr, fr.m_cache_result);
m_r = nullptr;
frame_stack().pop_back();
set_new_child_flag(q, m_r);