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https://github.com/Z3Prover/z3
synced 2025-11-03 21:09:11 +00:00
fix build
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner
parent
5f89ead54b
commit
9fab72b3ef
3 changed files with 88 additions and 52 deletions
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@ -112,7 +112,7 @@ namespace smt {
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unsigned m_final_check_idx; // circular counter used for implementing fairness
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bool m_is_auxiliary; // used to prevent unwanted information from being logged.
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parallel* m_par;
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class parallel* m_par;
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unsigned m_par_index;
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// -----------------------------------
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@ -413,26 +413,17 @@ namespace smt {
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return js.get_kind() == b_justification::JUSTIFICATION && js.get_justification()->get_from_theory() == th_id;
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}
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void set_par(unsigned idx, parallel* p) { m_par = p; m_par_index = idx; }
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void set_random_seed(unsigned s) { m_random.set_seed(s); }
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int get_random_value() { return m_random(); }
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bool is_searching() const { return m_searching; }
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svector<double> const & get_activity_vector() const {
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return m_activity;
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}
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svector<double> const & get_activity_vector() const { return m_activity; }
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double get_activity(bool_var v) const {
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return m_activity[v];
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}
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double get_activity(bool_var v) const { return m_activity[v]; }
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void set_activity(bool_var v, double act) {
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m_activity[v] = act;
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}
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void set_activity(bool_var v, double act) { m_activity[v] = act; }
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void activity_changed(bool_var v, bool increased) {
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if (increased) {
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@ -1617,6 +1608,8 @@ namespace smt {
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return m_unsat_core.get(idx);
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}
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expr_ref_vector const& unsat_core() const { return m_unsat_core; }
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void get_levels(ptr_vector<expr> const& vars, unsigned_vector& depth);
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expr_ref_vector get_trail();
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@ -15,29 +15,13 @@ Author:
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--*/
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#include "smt/smt_parallel.h"
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#include "util/scoped_ptr_vector.h"
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#include "ast/ast_util.h"
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#include "ast/ast_translation.h"
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#include "smt/smt_parallel.h"
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#include "smt/smt_lookahead.h"
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namespace smt {
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void parallel::add_unit(context& pctx, expr* e) {
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std::lock_guard<std::mutex> lock(m_mux);
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ast_translation tr(pctx.m, ctx.m);
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expr_ref u (tr(e), ctx.m);
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if (!m_unit_set.contains(u)) {
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m_unit_trail.push_back(u);
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m_unit_set.insert(u);
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}
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}
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void parallel::get_units(unsigned idx, context& pctx) {
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std::lock_guard<std::mutex> lock(m_mux);
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ast_translation tr(ctx.m, pctx.m);
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for (unsigned i = m_unit_lim[idx]; i < m_unit_trail.size(); ++i) {
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expr_ref u (tr(m_unit_trail.get(i)), pctx.m);
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pctx.assert_expr(u);
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}
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}
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lbool parallel::operator()(expr_ref_vector const& asms) {
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@ -58,6 +42,9 @@ namespace smt {
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std::string ex_msg;
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par_exception_kind ex_kind = DEFAULT_EX;
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unsigned error_code = 0;
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bool done = false;
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unsigned num_rounds = 0;
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unsigned max_conflicts = 400;
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for (unsigned i = 0; i < num_threads; ++i) {
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ast_manager* new_m = alloc(ast_manager, m, true);
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@ -68,18 +55,74 @@ namespace smt {
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new_ctx.set_random_seed(i + ctx.get_fparams().m_random_seed);
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ast_translation tr(*new_m, m);
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pasms.push_back(tr(asms));
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m_unit_lim.push_back(0);
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new_ctx.set_par(i, this);
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}
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std::function<void(context&,expr_ref_vector&,expr_ref&)> cube = [&](context& ctx, expr_ref_vector& lasms, expr_ref& c) {
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lookahead lh(ctx);
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c = lh.choose();
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if (c) lasms.push_back(c);
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};
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obj_hashtable<expr> unit_set;
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expr_ref_vector unit_trail(ctx.m);
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unsigned_vector unit_lim;
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for (unsigned i = 0; i < num_threads; ++i) unit_lim.push_back(0);
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std::function<void(void)> collect_units = [&,this]() {
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for (unsigned i = 0; i < num_threads; ++i) {
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context& pctx = *pctxs[i];
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pctx.pop_to_base_lvl();
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ast_translation tr(pctx.m, ctx.m);
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unsigned sz = pctx.assigned_literals().size();
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for (unsigned j = unit_lim[i]; j < sz; ++j) {
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literal lit = pctx.assigned_literals()[j];
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expr_ref e(pctx.bool_var2expr(lit.var()), pctx.m);
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if (lit.sign()) e = pctx.m.mk_not(e);
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expr_ref ce(tr(e.get()), ctx.m);
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if (!unit_set.contains(ce)) {
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unit_set.insert(ce);
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unit_trail.push_back(ce);
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}
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}
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}
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for (unsigned i = 0; i < num_threads; ++i) {
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context& pctx = *pctxs[i];
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ast_translation tr(ctx.m, pctx.m);
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unsigned sz = unit_trail.size();
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for (unsigned j = unit_lim[i]; j < sz; ++j) {
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expr_ref src(ctx.m), dst(pctx.m);
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dst = tr(unit_trail.get(j));
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pctx.assert_expr(dst);
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}
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unit_lim[i] = sz;
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}
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};
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std::mutex mux;
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auto worker_thread = [&](int i) {
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try {
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IF_VERBOSE(0, verbose_stream() << "thread " << i << "\n";);
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context& pctx = *pctxs[i];
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ast_manager& pm = *pms[i];
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expr_ref_vector lasms(pasms[i]);
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expr_ref c(pm);
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pctx.get_fparams().m_max_conflicts = max_conflicts;
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if (num_iterations > 0) {
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cube(pctx, lasms, c);
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}
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lbool r = pctx.check(lasms.size(), lasms.c_ptr());
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if (r == l_undef && pctx.m_num_conflicts >= max_conflicts) {
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return;
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}
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if (r == l_false && pctx.unsat_core().contains(c)) {
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pctx.assert_expr(mk_not(mk_and(pctx.unsat_core())));
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return;
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}
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lbool r = pctx.check(pasms[i].size(), pasms[i].c_ptr());
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bool first = false;
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{
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std::lock_guard<std::mutex> lock(mux);
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@ -87,6 +130,7 @@ namespace smt {
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finished_id = i;
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first = true;
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result = r;
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done = true;
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}
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}
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if (!first) return;
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@ -106,14 +150,20 @@ namespace smt {
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}
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};
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vector<std::thread> threads(num_threads);
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for (unsigned i = 0; i < num_threads; ++i) {
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threads[i] = std::thread([&, i]() { worker_thread(i); });
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}
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for (auto & th : threads) {
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th.join();
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}
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while (!done) {
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vector<std::thread> threads(num_threads);
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for (unsigned i = 0; i < num_threads; ++i) {
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threads[i] = std::thread([&, i]() { worker_thread(i); });
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}
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for (auto & th : threads) {
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th.join();
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}
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if (done) break;
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collect_units();
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++num_rounds;
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max_conflicts *= 2;
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}
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for (context* c : pctxs) {
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c->collect_statistics(ctx.m_aux_stats);
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@ -137,7 +187,7 @@ namespace smt {
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}
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break;
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case l_false:
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for (expr* e : pctx.m_unsat_core)
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for (expr* e : pctx.unsat_core())
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ctx.m_unsat_core.push_back(tr(e));
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break;
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default:
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@ -24,18 +24,11 @@ namespace smt {
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class parallel {
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context& ctx;
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expr_ref_vector m_unit_trail;
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obj_hashtable<expr> m_unit_set;
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unsigned_vector m_unit_lim;
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std::mutex m_mux;
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public:
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parallel(context& ctx): ctx(ctx), m_unit_trail(ctx.m) {}
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parallel(context& ctx): ctx(ctx) {}
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lbool operator()(expr_ref_vector const& asms);
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void add_unit(context& ctx, expr* e);
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void get_units(unsigned idx, context& pctx);
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};
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}
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