mirror of
https://github.com/Z3Prover/z3
synced 2025-04-08 18:31:49 +00:00
Merge branch 'master' of https://github.com/z3prover/z3 into opt
This commit is contained in:
commit
cb10a618a1
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@ -289,6 +289,10 @@ extern "C" {
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//LOG_Z3_optimize_from_file(c, d, s);
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std::ifstream is(s);
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if (!is) {
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std::ostringstream strm;
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strm << "Could not open file " << s;
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throw default_exception(strm.str());
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SET_ERROR_CODE(Z3_PARSER_ERROR);
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return;
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}
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@ -350,8 +350,10 @@ namespace opt {
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for (unsigned i = 0; i < m_soft_constraints.size(); ++i) {
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expr* e = m_soft_constraints[i];
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bool is_not = m.is_not(e, e);
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out << mk_pp(e, m)
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<< ((is_not != get_assignment(i))?" |-> true\n":" |-> false\n");
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out << m_weights[i] << ": " << mk_pp(e, m)
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<< ((is_not != get_assignment(i))?" |-> true ":" |-> false ")
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<< "\n";
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}
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}
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@ -792,10 +792,14 @@ namespace opt {
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arg = mk_not(m, arg);
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offset -= weight;
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}
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if (m.is_true(arg) || weight.is_zero()) {
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if (m.is_true(arg)) {
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IF_VERBOSE(1, verbose_stream() << weight << ": " << mk_pp(m_objectives[index].m_terms[i].get(), m) << " |-> true\n";);
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}
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else if (weight.is_zero()) {
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// skip
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}
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else if (m.is_false(arg)) {
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IF_VERBOSE(1, verbose_stream() << weight << ": " << mk_pp(m_objectives[index].m_terms[i].get(), m) << " |-> false\n";);
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offset += weight;
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}
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else {
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@ -26,6 +26,7 @@ namespace sat {
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m_always_true("always_true"),
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m_always_false("always_false"),
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m_caching("caching"),
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m_restart_max(0),
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m_random("random"),
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m_geometric("geometric"),
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m_luby("luby"),
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@ -66,7 +67,8 @@ namespace sat {
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m_restart_initial = p.restart_initial();
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m_restart_factor = p.restart_factor();
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m_restart_max = p.restart_max();
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m_random_freq = p.random_freq();
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m_random_seed = p.random_seed();
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if (m_random_seed == 0)
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@ -52,6 +52,7 @@ namespace sat {
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restart_strategy m_restart;
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unsigned m_restart_initial;
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double m_restart_factor; // for geometric case
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unsigned m_restart_max;
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double m_random_freq;
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unsigned m_random_seed;
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unsigned m_burst_search;
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@ -7,6 +7,7 @@ def_module_params('sat',
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('phase.caching.off', UINT, 100, 'phase caching off period (in number of conflicts)'),
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('restart', SYMBOL, 'luby', 'restart strategy: luby or geometric'),
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('restart.initial', UINT, 100, 'initial restart (number of conflicts)'),
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('restart.max', UINT, 0, 'maximal number of restarts. Ignored if set to 0'),
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('restart.factor', DOUBLE, 1.5, 'restart increment factor for geometric strategy'),
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('random_freq', DOUBLE, 0.01, 'frequency of random case splits'),
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('random_seed', UINT, 0, 'random seed'),
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@ -744,7 +744,6 @@ namespace sat {
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simplify_problem();
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if (check_inconsistent()) return l_false;
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if (m_config.m_max_conflicts == 0) {
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IF_VERBOSE(SAT_VB_LVL, verbose_stream() << "(sat \"abort: max-conflicts = 0\")\n";);
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return l_undef;
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@ -766,6 +765,12 @@ namespace sat {
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simplify_problem();
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if (check_inconsistent()) return l_false;
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gc();
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if (m_config.m_restart_max != 0 && m_config.m_restart_max <= m_restarts) {
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IF_VERBOSE(SAT_VB_LVL, verbose_stream() << "(sat \"abort: max-restarts\")\n";);
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return l_undef;
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}
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}
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}
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catch (abort_solver) {
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@ -1126,6 +1131,7 @@ namespace sat {
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m_restart_threshold = m_config.m_restart_initial;
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m_luby_idx = 1;
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m_gc_threshold = m_config.m_gc_initial;
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m_restarts = 0;
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m_min_d_tk = 1.0;
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m_stopwatch.reset();
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m_stopwatch.start();
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@ -1308,6 +1314,7 @@ namespace sat {
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void solver::restart() {
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m_stats.m_restart++;
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m_restarts++;
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IF_VERBOSE(1,
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verbose_stream() << "(sat-restart :conflicts " << m_stats.m_conflict << " :decisions " << m_stats.m_decision
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<< " :restarts " << m_stats.m_restart << mk_stat(*this)
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@ -293,6 +293,7 @@ namespace sat {
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protected:
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unsigned m_conflicts;
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unsigned m_restarts;
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unsigned m_conflicts_since_restart;
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unsigned m_restart_threshold;
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unsigned m_luby_idx;
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@ -264,7 +264,7 @@ namespace smt {
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}
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void arith_eq_adapter::collect_statistics(::statistics & st) const {
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st.update("eq adapter", m_stats.m_num_eq_axioms);
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st.update("arith eq adapter", m_stats.m_num_eq_axioms);
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}
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void arith_eq_adapter::display_already_processed(std::ostream & out) const {
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@ -465,7 +465,7 @@ namespace smt {
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tout << s_ante << "\n" << s_conseq << "\n";);
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literal lits[2] = {l_ante, l_conseq};
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ctx.mk_th_axiom(get_id(), 2, lits);
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mk_clause(l_ante, l_conseq, 0, 0);
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if (ctx.relevancy()) {
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if (l_ante == false_literal) {
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ctx.mark_as_relevant(l_conseq);
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@ -934,11 +934,13 @@ namespace smt {
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template<typename Ext>
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void theory_arith<Ext>::mk_clause(literal l1, literal l2, unsigned num_params, parameter * params) {
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TRACE("arith", literal lits[2]; lits[0] = l1; lits[1] = l2; get_context().display_literals_verbose(tout, 2, lits); tout << "\n";);
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get_context().mk_th_axiom(get_id(), l1, l2, num_params, params);
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}
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template<typename Ext>
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void theory_arith<Ext>::mk_clause(literal l1, literal l2, literal l3, unsigned num_params, parameter * params) {
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TRACE("arith", literal lits[3]; lits[0] = l1; lits[1] = l2; lits[2] = l3; get_context().display_literals_verbose(tout, 3, lits); tout << "\n";);
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get_context().mk_th_axiom(get_id(), l1, l2, l3, num_params, params);
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}
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@ -44,6 +44,7 @@ namespace smt {
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SASSERT(lower_bound(v).is_rational());
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numeral const & val = lower_bound(v).get_rational();
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value_sort_pair key(val, is_int_src(v));
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TRACE("arith_eq", tout << mk_pp(get_enode(v)->get_owner(), get_manager()) << " = " << val << "\n";);
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theory_var v2;
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if (m_fixed_var_table.find(key, v2)) {
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if (v2 < static_cast<int>(get_num_vars()) && is_fixed(v2) && lower_bound(v2).get_rational() == val) {
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@ -247,6 +248,7 @@ namespace smt {
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//
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// x1 <= k1 x1 >= k1, x2 <= x1 + k2 x2 >= x1 + k2
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//
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TRACE("arith_eq_propagation", tout << "fixed\n";);
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lower(x2)->push_justification(ante, numeral::zero(), proofs_enabled());
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upper(x2)->push_justification(ante, numeral::zero(), proofs_enabled());
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m_stats.m_fixed_eqs++;
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@ -324,28 +326,42 @@ namespace smt {
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template<typename Ext>
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void theory_arith<Ext>::propagate_eq_to_core(theory_var x, theory_var y, antecedents& antecedents) {
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// Ignore equality if variables are already known to be equal.
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ast_manager& m = get_manager();
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if (is_equal(x, y))
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return;
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// I doesn't make sense to propagate an equality (to the core) of variables of different sort.
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if (get_manager().get_sort(var2expr(x)) != get_manager().get_sort(var2expr(y))) {
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TRACE("arith", tout << mk_pp(var2expr(x), get_manager()) << " = " << mk_pp(var2expr(y), get_manager()) << "\n";);
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if (m.get_sort(var2expr(x)) != m.get_sort(var2expr(y))) {
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TRACE("arith", tout << mk_pp(var2expr(x), m) << " = " << mk_pp(var2expr(y), m) << "\n";);
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return;
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}
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context & ctx = get_context();
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region & r = ctx.get_region();
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enode * _x = get_enode(x);
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enode * _y = get_enode(y);
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eq_vector const& eqs = antecedents.eqs();
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literal_vector const& lits = antecedents.lits();
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justification * js =
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ctx.mk_justification(
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ext_theory_eq_propagation_justification(
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get_id(), r,
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antecedents.lits().size(), antecedents.lits().c_ptr(),
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antecedents.eqs().size(), antecedents.eqs().c_ptr(),
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lits.size(), lits.c_ptr(),
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eqs.size(), eqs.c_ptr(),
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_x, _y,
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antecedents.num_params(), antecedents.params("eq-propagate")));
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TRACE("arith_eq", tout << "detected equality: #" << _x->get_owner_id() << " = #" << _y->get_owner_id() << "\n";
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display_var(tout, x);
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display_var(tout, y););
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TRACE("arith_eq_propagation",
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for (unsigned i = 0; i < lits.size(); ++i) {
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ctx.display_detailed_literal(tout, lits[i]);
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tout << "\n";
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}
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for (unsigned i = 0; i < eqs.size(); ++i) {
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tout << mk_pp(eqs[i].first->get_owner(), m) << " = " << mk_pp(eqs[i].second->get_owner(), m) << "\n";
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}
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tout << " ==> ";
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tout << mk_pp(_x->get_owner(), m) << " = " << mk_pp(_y->get_owner(), m) << "\n";
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);
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ctx.assign_eq(_x, _y, eq_justification(js));
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}
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};
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@ -27,22 +27,22 @@ namespace smt {
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template<typename Ext>
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void theory_arith<Ext>::collect_statistics(::statistics & st) const {
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st.update("arith conflicts", m_stats.m_conflicts);
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st.update("add rows", m_stats.m_add_rows);
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st.update("pivots", m_stats.m_pivots);
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st.update("assert lower", m_stats.m_assert_lower);
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st.update("assert upper", m_stats.m_assert_upper);
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st.update("assert diseq", m_stats.m_assert_diseq);
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st.update("bound prop", m_stats.m_bound_props);
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st.update("fixed eqs", m_stats.m_fixed_eqs);
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st.update("offset eqs", m_stats.m_offset_eqs);
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st.update("gcd tests", m_stats.m_gcd_tests);
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st.update("ineq splits", m_stats.m_branches);
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st.update("gomory cuts", m_stats.m_gomory_cuts);
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st.update("max-min", m_stats.m_max_min);
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st.update("grobner", m_stats.m_gb_compute_basis);
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st.update("pseudo nonlinear", m_stats.m_nl_linear);
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st.update("nonlinear bounds", m_stats.m_nl_bounds);
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st.update("nonlinear horner", m_stats.m_nl_cross_nested);
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st.update("arith add rows", m_stats.m_add_rows);
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st.update("arith pivots", m_stats.m_pivots);
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st.update("arith assert lower", m_stats.m_assert_lower);
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st.update("arith assert upper", m_stats.m_assert_upper);
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st.update("arith assert diseq", m_stats.m_assert_diseq);
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st.update("arith bound prop", m_stats.m_bound_props);
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st.update("arith fixed eqs", m_stats.m_fixed_eqs);
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st.update("arith offset eqs", m_stats.m_offset_eqs);
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st.update("arith gcd tests", m_stats.m_gcd_tests);
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st.update("arith ineq splits", m_stats.m_branches);
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st.update("arith gomory cuts", m_stats.m_gomory_cuts);
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st.update("arith max-min", m_stats.m_max_min);
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st.update("arith grobner", m_stats.m_gb_compute_basis);
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st.update("arith pseudo nonlinear", m_stats.m_nl_linear);
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st.update("arith nonlinear bounds", m_stats.m_nl_bounds);
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st.update("arith nonlinear horner", m_stats.m_nl_cross_nested);
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m_arith_eq_adapter.collect_statistics(st);
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}
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@ -808,6 +808,7 @@ namespace smt {
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void theory_pb::assign_eh(bool_var v, bool is_true) {
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ptr_vector<ineq>* ineqs = 0;
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literal nlit(v, is_true);
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init_watch(v);
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TRACE("pb", tout << "assign: " << ~nlit << "\n";);
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ineqs = m_var_infos[v].m_lit_watch[nlit.sign()];
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if (ineqs != 0) {
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