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Fixed interruption/cancelation issue in rewriter.

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This commit is contained in:
Christoph M. Wintersteiger 2016-11-17 16:28:49 +00:00
parent 1600823435
commit a97358965b
1 changed files with 14 additions and 12 deletions
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26
src/ast/rewriter/rewriter_def.h
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@ -27,7 +27,7 @@ void rewriter_tpl<Config>::process_var(var * v) {
SASSERT(v->get_sort() == m().get_sort(m_r));
if (ProofGen) {
result_pr_stack().push_back(m_pr);
m_pr = 0;
m_pr = 0;
}
set_new_child_flag(v);
TRACE("rewriter", tout << mk_ismt2_pp(v, m()) << " -> " << m_r << "\n";);
@ -43,7 +43,7 @@ void rewriter_tpl<Config>::process_var(var * v) {
if (r != 0) {
SASSERT(v->get_sort() == m().get_sort(r));
if (!is_ground(r) && m_shifts[index] != m_bindings.size()) {
unsigned shift_amount = m_bindings.size() - m_shifts[index];
expr_ref tmp(m());
m_shifter(r, shift_amount, tmp);
@ -195,9 +195,9 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
// this optimization is only used when Proof generation is disabled.
if (f->is_associative() && t->get_ref_count() <= 1 && frame_stack().size() > 1) {
frame & prev_fr = frame_stack()[frame_stack().size() - 2];
if (is_app(prev_fr.m_curr) &&
to_app(prev_fr.m_curr)->get_decl() == f &&
prev_fr.m_state == PROCESS_CHILDREN &&
if (is_app(prev_fr.m_curr) &&
to_app(prev_fr.m_curr)->get_decl() == f &&
prev_fr.m_state == PROCESS_CHILDREN &&
flat_assoc(f)) {
frame_stack().pop_back();
set_new_child_flag(t);
@ -223,7 +223,7 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
}
br_status st = m_cfg.reduce_app(f, new_num_args, new_args, m_r, m_pr2);
SASSERT(st != BR_DONE || m().get_sort(m_r) == m().get_sort(t));
TRACE("reduce_app",
TRACE("reduce_app",
tout << mk_ismt2_pp(t, m()) << "\n";
tout << "st: " << st;
if (m_r) tout << " --->\n" << mk_ismt2_pp(m_r, m());
@ -296,11 +296,11 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
expr * def;
proof * def_pr;
quantifier * def_q;
// When get_macro succeeds, then
// When get_macro succeeds, then
// we know that:
// forall X. f(X) = def[X]
// and def_pr is a proof for this quantifier.
//
//
// Remark: def_q is only used for proof generation.
// It is the quantifier forall X. f(X) = def[X]
if (get_macro(f, def, def_q, def_pr)) {
@ -318,7 +318,7 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
if (ProofGen) {
NOT_IMPLEMENTED_YET();
// We do not support the use of bindings in proof generation mode.
// Thus we have to apply the subsitution here, and
// Thus we have to apply the subsitution here, and
// beta_reducer subst(m());
// subst.set_bindings(new_num_args, new_args);
// expr_ref r2(m());
@ -333,7 +333,7 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
unsigned i = num_args;
while (i > 0) {
--i;
m_bindings.push_back(new_args[i]); // num_args - i - 1]);
m_bindings.push_back(new_args[i]); // num_args - i - 1]);
m_shifts.push_back(sz);
}
result_stack().push_back(def);
@ -465,7 +465,7 @@ void rewriter_tpl<Config>::process_quantifier(quantifier * q, frame & fr) {
}
else {
new_pats = q->get_patterns();
new_no_pats = q->get_no_patterns();
new_no_pats = q->get_no_patterns();
}
if (ProofGen) {
quantifier * new_q = m().update_quantifier(q, q->get_num_patterns(), new_pats, q->get_num_no_patterns(), new_no_pats, new_body);
@ -559,7 +559,7 @@ template<typename Config>
void rewriter_tpl<Config>::display_bindings(std::ostream& out) {
out << "bindings:\n";
for (unsigned i = 0; i < m_bindings.size(); i++) {
if (m_bindings[i])
if (m_bindings[i])
out << i << ": " << mk_ismt2_pp(m_bindings[i], m()) << "\n";
}
}
@ -596,6 +596,7 @@ template<typename Config>
template<bool ProofGen>
void rewriter_tpl<Config>::main_loop(expr * t, expr_ref & result, proof_ref & result_pr) {
if (m_cancel_check && m().canceled()) {
reset();
throw rewriter_exception(m().limit().get_cancel_msg());
}
SASSERT(!ProofGen || result_stack().size() == result_pr_stack().size());
@ -630,6 +631,7 @@ void rewriter_tpl<Config>::resume_core(expr_ref & result, proof_ref & result_pr)
SASSERT(!frame_stack().empty());
while (!frame_stack().empty()) {
if (m_cancel_check && m().canceled()) {
reset();
throw rewriter_exception(m().limit().get_cancel_msg());
}
SASSERT(!ProofGen || result_stack().size() == result_pr_stack().size());