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bind variables in queries generated from Horn tactic to enforce that rule formulas don't contain free variables. Issue #328

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-12-01 14:47:33 -08:00
parent aa777bd5c6
commit b3e8020c88
5 changed files with 21 additions and 5 deletions
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2
src/muz/base/bind_variables.h
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@ -7,7 +7,7 @@ Module Name:
Abstract:
Utility to find constants that are declard as varaibles.
Utility to find constants that are declard as variables.
Author:

3
src/muz/base/dl_context.cpp
View file

@ -973,7 +973,7 @@ namespace datalog {
}
}
void context::get_raw_rule_formulas(expr_ref_vector& rules, svector<symbol>& names, vector<unsigned> &bounds) {
void context::get_raw_rule_formulas(expr_ref_vector& rules, svector<symbol>& names, unsigned_vector &bounds) {
for (unsigned i = 0; i < m_rule_fmls.size(); ++i) {
expr_ref r = bind_vars(m_rule_fmls[i].get(), true);
rules.push_back(r.get());
@ -988,7 +988,6 @@ namespace datalog {
// ensure that rules are all using bound variables.
for (unsigned i = m_rule_fmls_head; i < m_rule_fmls.size(); ++i) {
ptr_vector<sort> sorts;
m_free_vars(m_rule_fmls[i].get());
if (!m_free_vars.empty()) {
rm.mk_rule(m_rule_fmls[i].get(), 0, m_rule_set, m_rule_names[i]);

2
src/muz/base/dl_context.h
View file

@ -377,7 +377,7 @@ namespace datalog {
rule_set & get_rules() { flush_add_rules(); return m_rule_set; }
void get_rules_as_formulas(expr_ref_vector& fmls, expr_ref_vector& qs, svector<symbol>& names);
void get_raw_rule_formulas(expr_ref_vector& fmls, svector<symbol>& names, vector<unsigned> &bounds);
void get_raw_rule_formulas(expr_ref_vector& fmls, svector<symbol>& names, unsigned_vector &bounds);
void add_fact(app * head);
void add_fact(func_decl * pred, const relation_fact & fact);