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Merge branch 'master' into unit_prop_on_monomials

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Nikolaj Bjorner 2023-09-26 20:14:06 -07:00 • committed by GitHub
commit e8fcc876c9
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9 changed files with 31 additions and 19 deletions
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5
src/smt/params/smt_params_helper.pyg
View file

@ -80,7 +80,10 @@ def_module_params(module_name='smt',
('arith.nl.grobner_cnfl_to_report', UINT, 1, 'grobner\'s maximum number of conflicts to report'),
('arith.nl.gr_q', UINT, 10, 'grobner\'s quota'),
('arith.nl.grobner_subs_fixed', UINT, 1, '0 - no subs, 1 - substitute, 2 - substitute fixed zeros only'),
('arith.nl.delay', UINT, 500, 'number of calls to final check before invoking bounded nlsat check'),
('arith.nl.delay', UINT, 500, 'number of calls to final check before invoking bounded nlsat check'),
('arith.nl.propagate_linear_monomials', BOOL, True, 'propagate linear monomials'),
('arith.nl.optimize_bounds', BOOL, True, 'enable bounds optimization'),
('arith.nl.cross_nested', BOOL, True, 'enable cross-nested consistency checking'),
('arith.propagate_eqs', BOOL, True, 'propagate (cheap) equalities'),
('arith.propagation_mode', UINT, 1, '0 - no propagation, 1 - propagate existing literals, 2 - refine finite bounds'),
('arith.branch_cut_ratio', UINT, 2, 'branch/cut ratio for linear integer arithmetic'),

6
src/smt/params/theory_arith_params.cpp
View file

@ -36,6 +36,9 @@ void theory_arith_params::updt_params(params_ref const & _p) {
m_arith_bound_prop = static_cast<bound_prop_mode>(p.arith_propagation_mode());
m_arith_eager_eq_axioms = p.arith_eager_eq_axioms();
m_arith_auto_config_simplex = p.arith_auto_config_simplex();
m_nl_arith_propagate_linear_monomials = p.arith_nl_propagate_linear_monomials();
m_nl_arith_optimize_bounds = p.arith_nl_optimize_bounds();
m_nl_arith_cross_nested = p.arith_nl_cross_nested();
arith_rewriter_params ap(_p);
m_arith_eq2ineq = ap.eq2ineq();
@ -89,4 +92,7 @@ void theory_arith_params::display(std::ostream & out) const {
DISPLAY_PARAM(m_nl_arith_max_degree);
DISPLAY_PARAM(m_nl_arith_branching);
DISPLAY_PARAM(m_nl_arith_rounds);
DISPLAY_PARAM(m_nl_arith_propagate_linear_monomials);
DISPLAY_PARAM(m_nl_arith_optimize_bounds);
DISPLAY_PARAM(m_nl_arith_cross_nested);
}

3
src/smt/params/theory_arith_params.h
View file

@ -105,6 +105,9 @@ struct theory_arith_params {
unsigned m_nl_arith_max_degree = 6;
bool m_nl_arith_branching = true;
unsigned m_nl_arith_rounds = 1024;
bool m_nl_arith_propagate_linear_monomials = true;
bool m_nl_arith_optimize_bounds = true;
bool m_nl_arith_cross_nested = true;
theory_arith_params(params_ref const & p = params_ref()) {

4
src/smt/smt_context.h
View file

@ -134,7 +134,6 @@ namespace smt {
enode * m_lhs;
enode * m_rhs;
eq_justification m_justification;
new_eq() {}
new_eq(enode * lhs, enode * rhs, eq_justification const & js):
m_lhs(lhs), m_rhs(rhs), m_justification(js) {}
};
@ -143,7 +142,6 @@ namespace smt {
theory_id m_th_id;
theory_var m_lhs;
theory_var m_rhs;
new_th_eq():m_th_id(null_theory_id), m_lhs(null_theory_var), m_rhs(null_theory_var) {}
new_th_eq(theory_id id, theory_var l, theory_var r):m_th_id(id), m_lhs(l), m_rhs(r) {}
};
svector<new_th_eq> m_th_eq_propagation_queue;
@ -215,7 +213,7 @@ namespace smt {
// -----------------------------------
proto_model_ref m_proto_model;
model_ref m_model;
std::string m_unknown;
const char * m_unknown;
void mk_proto_model();
void reset_model() { m_model = nullptr; m_proto_model = nullptr; }

2
src/smt/smt_context_pp.cpp
View file

@ -66,6 +66,7 @@ namespace smt {
std::string context::last_failure_as_string() const {
std::string r;
switch(m_last_search_failure) {
case UNKNOWN:
case OK: r = m_unknown; break;
case MEMOUT: r = "memout"; break;
case CANCELED: r = "canceled"; break;
@ -82,7 +83,6 @@ namespace smt {
case RESOURCE_LIMIT: r = "(resource limits reached)"; break;
case QUANTIFIERS: r = "(incomplete quantifiers)"; break;
case LAMBDAS: r = "(incomplete lambdas)"; break;
case UNKNOWN: r = m_unknown; break;
}
return r;
}

6
src/smt/theory_arith_nl.h
View file

@ -902,6 +902,8 @@ bool theory_arith<Ext>::propagate_linear_monomial(theory_var v) {
*/
template<typename Ext>
bool theory_arith<Ext>::propagate_linear_monomials() {
if (!m_params.m_nl_arith_propagate_linear_monomials)
return false;
if (!reflection_enabled())
return false;
TRACE("non_linear", tout << "propagating linear monomials...\n";);
@ -2278,6 +2280,8 @@ typename theory_arith<Ext>::gb_result theory_arith<Ext>::compute_grobner(svector
*/
template<typename Ext>
bool theory_arith<Ext>::max_min_nl_vars() {
if (!m_params.m_nl_arith_optimize_bounds)
return true;
var_set already_found;
svector<theory_var> vars;
for (theory_var v : m_nl_monomials) {
@ -2360,7 +2364,7 @@ final_check_status theory_arith<Ext>::process_non_linear() {
}
break;
case 1:
if (!is_cross_nested_consistent(vars))
if (m_params.m_nl_arith_cross_nested && !is_cross_nested_consistent(vars))
progress = true;
break;
case 2: