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fix #2771

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-12-02 15:41:56 -08:00
parent 37a4dd68d0
commit 28cb13fb96
3 changed files with 14 additions and 13 deletions
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8
src/smt/theory_utvpi.cpp
View file

@ -138,14 +138,12 @@ namespace smt {
m_coeff_map.insert_if_not_there2(e, rational(0))->get_data().m_value += mul;
}
}
obj_map<expr, rational>::iterator it = m_coeff_map.begin();
obj_map<expr, rational>::iterator end = m_coeff_map.end();
for (; it != end; ++it) {
rational r = it->m_value;
for (auto const& kv : m_coeff_map) {
rational r = kv.m_value;
if (r.is_zero()) {
continue;
}
m_terms.push_back(std::make_pair(it->m_key, r));
m_terms.push_back(std::make_pair(kv.m_key, r));
if (m_terms.size() > 2) {
return false;
}

4
src/smt/theory_utvpi.h
View file

@ -138,7 +138,7 @@ namespace smt {
smt_params m_params;
arith_util a;
arith_eq_adapter m_arith_eq_adapter;
th_var m_zero; //cache the variable representing the zero variable.
th_var m_izero, m_rzero; //cache the variable representing the zero variable.
dl_graph<GExt> m_graph;
nc_functor m_nc_functor;
@ -299,7 +299,7 @@ namespace smt {
void new_eq_or_diseq(bool is_eq, th_var v1, th_var v2, justification& eq_just);
th_var get_zero(sort* s) { init_zero(); return m_zero; }
th_var get_zero(sort* s) { init_zero(); return a.is_int(s) ? m_izero : m_rzero; }
th_var get_zero(expr* e) { return get_zero(get_manager().get_sort(e)); }

15
src/smt/theory_utvpi_def.h
View file

@ -62,7 +62,8 @@ namespace smt {
theory(m.mk_family_id("arith")),
a(m),
m_arith_eq_adapter(*this, m_params, a),
m_zero(null_theory_var),
m_izero(null_theory_var),
m_rzero(null_theory_var),
m_nc_functor(*this),
m_asserted_qhead(0),
m_agility(0.5),
@ -133,7 +134,8 @@ namespace smt {
template<typename Ext>
void theory_utvpi<Ext>::reset_eh() {
m_graph .reset();
m_zero = null_theory_var;
m_izero = null_theory_var;
m_rzero = null_theory_var;
m_atoms .reset();
m_asserted_atoms .reset();
m_stats .reset();
@ -259,13 +261,13 @@ namespace smt {
template<typename Ext>
void theory_utvpi<Ext>::init(context* ctx) {
theory::init(ctx);
m_zero = null_theory_var;
}
template<typename Ext>
void theory_utvpi<Ext>::init_zero() {
if (m_zero == null_theory_var) {
m_zero = mk_var(get_context().mk_enode(a.mk_numeral(rational(0), true), false, false, true));
if (m_izero == null_theory_var) {
m_izero = mk_var(get_context().mk_enode(a.mk_numeral(rational(0), true), false, false, true));
m_rzero = mk_var(get_context().mk_enode(a.mk_numeral(rational(0), false), false, false, true));
}
}
@ -783,7 +785,8 @@ namespace smt {
m.register_factory(m_factory);
enforce_parity();
init_zero();
m_graph.set_to_zero(to_var(m_zero), neg(to_var(m_zero)));
m_graph.set_to_zero(to_var(m_izero), neg(to_var(m_izero)));
m_graph.set_to_zero(to_var(m_rzero), neg(to_var(m_rzero)));
compute_delta();
DEBUG_CODE(model_validate(););
}