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remove uneeded calls to datalog_context::get_rules(), since it can be expensive.

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thanks to Henning Guenther for finding this.

Signed-off-by: Nuno Lopes <nlopes@microsoft.com>
This commit is contained in:
Nuno Lopes 2015-07-08 13:39:15 +01:00
parent eeef4d29d6
commit 8edd551f20
4 changed files with 23 additions and 16 deletions
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13
src/muz/bmc/dl_bmc_engine.cpp
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@ -1438,8 +1438,9 @@ namespace datalog {
m_ctx.ensure_opened();
m_rules.reset();
datalog::rule_manager& rule_manager = m_ctx.get_rule_manager();
datalog::rule_set old_rules(m_ctx.get_rules());
rule_manager.mk_query(query, m_ctx.get_rules());
rule_set& rules0 = m_ctx.get_rules();
datalog::rule_set old_rules(rules0);
rule_manager.mk_query(query, rules0);
expr_ref bg_assertion = m_ctx.get_background_assertion();
apply_default_transformation(m_ctx);
@ -1449,12 +1450,14 @@ namespace datalog {
transformer.register_plugin(slice);
m_ctx.transform_rules(transformer);
}
if (m_ctx.get_rules().get_output_predicates().empty()) {
const rule_set& rules = m_ctx.get_rules();
if (rules.get_output_predicates().empty()) {
return l_false;
}
m_query_pred = m_ctx.get_rules().get_output_predicate();
m_rules.replace_rules(m_ctx.get_rules());
m_query_pred = rules.get_output_predicate();
m_rules.replace_rules(rules);
m_rules.close();
m_ctx.reopen();
m_ctx.replace_rules(old_rules);