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disable bottom-up COI on rules with negated predicates. Fixes issue #140

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-06-23 18:57:16 +02:00
parent 77c8e5b0a0
commit 46ca7e17e0
4 changed files with 10 additions and 0 deletions
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1
src/muz/base/dl_context.cpp
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@ -298,6 +298,7 @@ namespace datalog {
bool context::explanations_on_relation_level() const { return m_params->datalog_explanations_on_relation_level(); }
bool context::magic_sets_for_queries() const { return m_params->datalog_magic_sets_for_queries(); }
symbol context::tab_selection() const { return m_params->tab_selection(); }
bool context::xform_coi() const { return m_params->xform_coi(); }
bool context::xform_slice() const { return m_params->xform_slice(); }
bool context::xform_bit_blast() const { return m_params->xform_bit_blast(); }
bool context::karr() const { return m_params->xform_karr(); }

1
src/muz/base/dl_context.h
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@ -277,6 +277,7 @@ namespace datalog {
bool instantiate_quantifiers() const;
bool xform_bit_blast() const;
bool xform_slice() const;
bool xform_coi() const;
void register_finite_sort(sort * s, sort_kind k);

1
src/muz/base/fixedpoint_params.pyg
View file

@ -142,6 +142,7 @@ def_module_params('fixedpoint',
('xform.instantiate_quantifiers', BOOL, False,
"instantiate quantified Horn clauses using E-matching heuristic"),
('xform.coalesce_rules', BOOL, False, "coalesce rules"),
('xform.coi', BOOL, True, "use cone of influence simplificaiton"),
('duality.enable_restarts', BOOL, False, 'DUALITY: enable restarts'),
))

7
src/muz/transforms/dl_mk_coi_filter.cpp
View file

@ -36,6 +36,9 @@ namespace datalog {
// -----------------------------------
rule_set * mk_coi_filter::operator()(rule_set const & source) {
if (!m_context.xform_coi()) {
return 0;
}
if (source.empty()) {
return 0;
}
@ -70,6 +73,10 @@ namespace datalog {
e->get_data().m_value = alloc(ptr_vector<rule>);
}
e->get_data().m_value->push_back(r);
if (r->is_neg_tail(i)) {
// don't try COI on rule with negation.
return 0;
}
}
}
}