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fix bug incorrect clearing of goals during node creation. Issue #777

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-11-19 10:06:16 -08:00
parent a5bae72bdf
commit 2ff5af7d42
3 changed files with 15 additions and 10 deletions
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8
src/muz/pdr/pdr_context.cpp
View file

@ -895,14 +895,12 @@ namespace pdr {
void model_node::dequeue(model_node*& root) {
TRACE("pdr", tout << this << " " << state() << "\n";);
root = 0;
TRACE("pdr", tout << this << " root: " << root << " " << state() << "\n";);
if (!m_next && !m_prev) return;
SASSERT(m_next);
SASSERT(m_prev);
SASSERT(children().empty());
if (this == m_next) {
// SASSERT(root == this);
root = 0;
}
else {
@ -975,7 +973,7 @@ namespace pdr {
}
void model_search::enqueue_leaf(model_node* n) {
TRACE("pdr_verbose", tout << n << " " << n->state() << " goal: " << m_goal << "\n";);
TRACE("pdr_verbose", tout << "node: " << n << " " << n->state() << " goal: " << m_goal << "\n";);
SASSERT(n->is_open());
if (!m_goal) {
m_goal = n;
@ -1005,7 +1003,7 @@ namespace pdr {
return m_cache[l];
}
void model_search::erase_children(model_node& n, bool backtrack) {
void model_search::erase_children(model_node& n, bool backtrack) {
ptr_vector<model_node> todo, nodes;
todo.append(n.children());
remove_goal(n);

1
src/muz/pdr/pdr_dl_interface.cpp
View file

@ -148,6 +148,7 @@ lbool dl_interface::query(expr * query) {
TRACE("pdr",
tout << "rules:\n";
m_ctx.display_rules(tout);
m_ctx.display_smt2(0, 0, tout);
);
IF_VERBOSE(2, m_ctx.display_rules(verbose_stream()););