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combine PS_THEORY with cache on/off mode

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-02-01 09:50:00 -08:00
parent 3ec7146ec8
commit 74fc8cfde7
5 changed files with 23 additions and 7 deletions
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2
src/smt/params/smt_params.cpp
View file

@ -39,6 +39,7 @@ void smt_params::updt_local_params(params_ref const & _p) {
m_max_conflicts = p.max_conflicts();
m_restart_max = p.restart_max();
m_threads = p.threads();
m_threads_max_conflicts = p.threads_max_conflicts();
m_core_validate = p.core_validate();
m_logic = _p.get_sym("logic", m_logic);
m_string_solver = p.string_solver();
@ -100,6 +101,7 @@ void smt_params::display(std::ostream & out) const {
DISPLAY_PARAM(m_minimize_lemmas);
DISPLAY_PARAM(m_max_conflicts);
DISPLAY_PARAM(m_threads);
DISPLAY_PARAM(m_threads_max_conflicts);
DISPLAY_PARAM(m_simplify_clauses);
DISPLAY_PARAM(m_tick);
DISPLAY_PARAM(m_display_features);

2
src/smt/params/smt_params.h
View file

@ -104,6 +104,7 @@ struct smt_params : public preprocessor_params,
unsigned m_max_conflicts;
unsigned m_restart_max;
unsigned m_threads;
unsigned m_threads_max_conflicts;
bool m_simplify_clauses;
unsigned m_tick;
bool m_display_features;
@ -255,6 +256,7 @@ struct smt_params : public preprocessor_params,
m_minimize_lemmas(true),
m_max_conflicts(UINT_MAX),
m_threads(1),
m_threads_max_conflicts(UINT_MAX),
m_simplify_clauses(true),
m_tick(1000),
m_display_features(false),

1
src/smt/params/smt_params_helper.pyg
View file

@ -21,6 +21,7 @@ def_module_params(module_name='smt',
('max_conflicts', UINT, UINT_MAX, 'maximum number of conflicts before giving up.'),
('restart.max', UINT, UINT_MAX, 'maximal number of restarts.'),
('threads', UINT, 1, 'maximal number of parallel threads.'),
('threads.max_conflicts', UINT, 400, 'maximal number of conflicts between rounds of cubing for parallel SMT'),
('mbqi', BOOL, True, 'model based quantifier instantiation (MBQI)'),
('mbqi.max_cexs', UINT, 1, 'initial maximal number of counterexamples used in MBQI, each counterexample generates a quantifier instantiation'),
('mbqi.max_cexs_incr', UINT, 0, 'increment for MBQI_MAX_CEXS, the increment is performed after each round of MBQI'),

15
src/smt/smt_context.cpp
View file

@ -1850,15 +1850,24 @@ namespace smt {
else {
switch (m_fparams.m_phase_selection) {
case PS_THEORY:
if (d.is_theory_atom()) {
if (m_phase_cache_on && d.m_phase_available) {
is_pos = m_bdata[var].m_phase;
}
else if (!m_phase_cache_on && d.is_theory_atom()) {
theory * th = m_theories.get_plugin(d.get_theory());
lbool ph = th->get_phase(var);
if (ph != l_undef) {
is_pos = ph == l_true;
break;
}
else {
is_pos = m_phase_default;
}
}
Z3_fallthrough;
else {
TRACE("phase_selection", tout << "setting to false\n";);
is_pos = m_phase_default;
}
break;
case PS_CACHING:
case PS_CACHING_CONSERVATIVE:
case PS_CACHING_CONSERVATIVE2:

10
src/smt/smt_parallel.cpp
View file

@ -45,7 +45,7 @@ namespace smt {
unsigned error_code = 0;
bool done = false;
unsigned num_rounds = 0;
unsigned max_conflicts = 400;
unsigned max_conflicts = ctx.get_fparams().m_threads_max_conflicts;
for (unsigned i = 0; i < num_threads; ++i) {
ast_manager* new_m = alloc(ast_manager, m, true);
@ -87,10 +87,10 @@ namespace smt {
}
}
unsigned sz = unit_trail.size();
for (unsigned i = 0; i < num_threads; ++i) {
context& pctx = *pctxs[i];
ast_translation tr(ctx.m, pctx.m);
unsigned sz = unit_trail.size();
for (unsigned j = unit_lim[i]; j < sz; ++j) {
expr_ref src(ctx.m), dst(pctx.m);
dst = tr(unit_trail.get(j));
@ -105,7 +105,7 @@ namespace smt {
auto worker_thread = [&](int i) {
try {
IF_VERBOSE(0, verbose_stream() << "thread " << i << "\n";);
IF_VERBOSE(1, verbose_stream() << "thread " << i << "\n";);
context& pctx = *pctxs[i];
ast_manager& pm = *pms[i];
expr_ref_vector lasms(pasms[i]);
@ -146,14 +146,16 @@ namespace smt {
catch (z3_error & err) {
error_code = err.error_code();
ex_kind = ERROR_EX;
done = true;
}
catch (z3_exception & ex) {
ex_msg = ex.msg();
ex_kind = DEFAULT_EX;
done = true;
}
};
while (!done) {
while (true) {
vector<std::thread> threads(num_threads);
for (unsigned i = 0; i < num_threads; ++i) {
threads[i] = std::thread([&, i]() { worker_thread(i); });