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fix messup with closing nodes

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2025-09-08 16:35:36 -07:00
parent 189a03c94a
commit 96bb3caa9e
2 changed files with 19 additions and 0 deletions
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4
src/smt/smt_parallel2.cpp
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@ -220,6 +220,10 @@ namespace smt {
IF_VERBOSE(1, verbose_stream() << "Batch manager splitting on literal: " << mk_bounded_pp(lit, m, 3) << "\n");
if (m_state != state::is_running)
return;
// optional heuristic:
// node->get_status() == status::active
// and depth is 'high' enough
// then ignore split, and instead set the status of node to open.
m_search_tree.split(node, lit, nlit);
cv.notify_all();
}

15
src/util/search_tree.h
View file

@ -80,6 +80,8 @@ namespace search_tree {
if (res)
return res;
}
if (m_left->get_status() == status::closed && m_right->get_status() == status::closed)
m_status = status::closed;
return nullptr;
}
@ -137,6 +139,19 @@ namespace search_tree {
n->set_status(status::closed);
close_node(n->left());
close_node(n->right());
while (n) {
auto p = n->parent();
if (!p)
return;
if (p->get_status() != status::open)
return;
if (p->left()->get_status() != status::closed)
return;
if (p->right()->get_status() != status::closed)
return;
p->set_status(status::closed);
n = p;
}
}
public: