mirror of
https://github.com/Z3Prover/z3
synced 2025-04-30 04:15:51 +00:00
Switch rest of spacer to new model API and remove mev_util
This commit is contained in:
Arie Gurfinkel
parent
a222b6d41f
commit
4204b6ede2
5 changed files with 41 additions and 137 deletions
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@ -36,7 +36,6 @@ Notes:
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#include "muz/base/dl_rule_set.h"
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#include "smt/tactic/unit_subsumption_tactic.h"
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#include "model/model_smt2_pp.h"
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#include "model/model_evaluator.h"
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#include "muz/transforms/dl_mk_rule_inliner.h"
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#include "ast/ast_smt2_pp.h"
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#include "ast/ast_ll_pp.h"
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@ -356,12 +355,10 @@ pob *derivation::create_next_child ()
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// this is possible if m_post was weakened for some reason
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model_ref mdl;
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if (!pt.is_must_reachable(mk_and(summaries), &mdl)) { return nullptr; }
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mdl->set_model_completion(false);
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model_evaluator_util mev (m);
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mev.set_model (*mdl);
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// find must summary used
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reach_fact *rf = pt.get_used_rf (*mev.get_model(), true);
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reach_fact *rf = pt.get_used_rf (*mdl, true);
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// get an implicant of the summary
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expr_ref_vector u(m), lits(m);
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@ -2883,7 +2880,6 @@ expr_ref context::get_ground_sat_answer()
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// smt context to obtain local cexes
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ref<solver> cex_ctx =
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mk_smt_solver(m, params_ref::get_empty(), symbol::null);
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model_evaluator_util mev (m);
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// preorder traversal of the query derivation tree
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for (unsigned curr = 0; curr < pts.size (); curr++) {
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@ -2936,8 +2932,7 @@ expr_ref context::get_ground_sat_answer()
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model_ref local_mdl;
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cex_ctx->get_model (local_mdl);
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cex_ctx->pop (1);
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model_evaluator mev(*local_mdl);
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local_mdl->set_model_completion(true);
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for (unsigned i = 0; i < child_pts.size(); i++) {
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pred_transformer& ch_pt = *(child_pts.get(i));
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unsigned sig_size = ch_pt.sig_size();
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@ -2946,7 +2941,7 @@ expr_ref context::get_ground_sat_answer()
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for (unsigned j = 0; j < sig_size; j++) {
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expr_ref sig_arg(m), sig_val(m);
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sig_arg = m.mk_const (m_pm.o2o(ch_pt.sig(j), 0, i));
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VERIFY(mev.eval (sig_arg, sig_val, true));
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sig_val = (*local_mdl)(sig_arg);
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ground_fact_conjs.push_back(m.mk_eq(sig_arg, sig_val));
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ground_arg_vals.push_back(sig_val);
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}
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@ -3166,7 +3161,7 @@ bool context::is_reachable(pob &n)
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// used in case n is unreachable
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unsigned uses_level = infty_level ();
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model_ref model;
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model_ref mdl;
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// used in case n is reachable
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bool is_concrete;
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@ -3177,7 +3172,7 @@ bool context::is_reachable(pob &n)
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unsigned saved = n.level ();
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n.m_level = infty_level ();
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lbool res = n.pt().is_reachable(n, nullptr, &model,
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lbool res = n.pt().is_reachable(n, nullptr, &mdl,
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uses_level, is_concrete, r,
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reach_pred_used, num_reuse_reach);
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n.m_level = saved;
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@ -3191,11 +3186,9 @@ bool context::is_reachable(pob &n)
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SASSERT(res == l_true);
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SASSERT(is_concrete);
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model_evaluator_util mev (m);
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mev.set_model(*model);
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// -- update must summary
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if (r && r->get_uninterpreted_tail_size () > 0) {
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reach_fact_ref rf = n.pt().mk_rf (n, *mev.get_model(), *r);
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reach_fact_ref rf = n.pt().mk_rf (n, *mdl, *r);
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n.pt ().add_rf (rf.get ());
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}
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@ -3322,6 +3315,7 @@ lbool context::expand_pob(pob& n, pob_ref_buffer &out)
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lbool res = n.pt ().is_reachable (n, &cube, &model, uses_level, is_concrete, r,
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reach_pred_used, num_reuse_reach);
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if (model) model->set_model_completion(false);
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checkpoint ();
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IF_VERBOSE (1, verbose_stream () << "." << std::flush;);
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switch (res) {
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@ -3330,13 +3324,11 @@ lbool context::expand_pob(pob& n, pob_ref_buffer &out)
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// update stats
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m_stats.m_num_reuse_reach += num_reuse_reach;
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model_evaluator_util mev (m);
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mev.set_model (*model);
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// must-reachable
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if (is_concrete) {
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// -- update must summary
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if (r && r->get_uninterpreted_tail_size() > 0) {
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reach_fact_ref rf = n.pt().mk_rf (n, *mev.get_model(), *r);
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reach_fact_ref rf = n.pt().mk_rf (n, *model, *r);
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checkpoint ();
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n.pt ().add_rf (rf.get ());
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checkpoint ();
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@ -3374,7 +3366,7 @@ lbool context::expand_pob(pob& n, pob_ref_buffer &out)
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// create a child of n
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out.push_back(&n);
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VERIFY(create_children (n, *r, mev, reach_pred_used, out));
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VERIFY(create_children (n, *r, *model, reach_pred_used, out));
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IF_VERBOSE(1, verbose_stream () << " U "
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<< std::fixed << std::setprecision(2)
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<< watch.get_seconds () << "\n";);
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@ -3449,12 +3441,10 @@ lbool context::expand_pob(pob& n, pob_ref_buffer &out)
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SASSERT(m_weak_abs);
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m_stats.m_expand_pob_undef++;
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if (r && r->get_uninterpreted_tail_size() > 0) {
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model_evaluator_util mev(m);
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mev.set_model(*model);
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// do not trust reach_pred_used
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for (unsigned i = 0, sz = reach_pred_used.size(); i < sz; ++i)
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{ reach_pred_used[i] = false; }
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has_new_child = create_children(n,*r,mev,reach_pred_used, out);
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has_new_child = create_children(n, *r, *model, reach_pred_used, out);
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}
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IF_VERBOSE(1, verbose_stream() << " UNDEF "
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<< std::fixed << std::setprecision(2)
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@ -3640,7 +3630,7 @@ reach_fact *pred_transformer::mk_rf(pob& n, model &mdl, const datalog::rule& r)
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\brief create children states from model cube.
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*/
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bool context::create_children(pob& n, datalog::rule const& r,
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model_evaluator_util &mev,
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model &mdl,
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const vector<bool> &reach_pred_used,
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pob_ref_buffer &out)
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{
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@ -3649,7 +3639,7 @@ bool context::create_children(pob& n, datalog::rule const& r,
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TRACE("spacer",
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tout << "Model:\n";
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model_smt2_pp(tout, m, *mev.get_model (), 0);
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model_smt2_pp(tout, m, mdl, 0);
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tout << "\n";
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tout << "Transition:\n" << mk_pp(pt.get_transition(r), m) << "\n";
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tout << "Pob:\n" << mk_pp(n.post(), m) << "\n";);
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@ -3665,7 +3655,7 @@ bool context::create_children(pob& n, datalog::rule const& r,
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forms.push_back(pt.get_transition(r));
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forms.push_back(n.post());
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compute_implicant_literals (*mev.get_model(), forms, lits);
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compute_implicant_literals (mdl, forms, lits);
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expr_ref phi = mk_and (lits);
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// primed variables of the head
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@ -3680,7 +3670,7 @@ bool context::create_children(pob& n, datalog::rule const& r,
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// skolems of the pob
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n.get_skolems(vars);
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n.pt().mbp(vars, phi, *mev.get_model (), true, use_ground_pob());
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n.pt().mbp(vars, phi, mdl, true, use_ground_pob());
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//qe::reduce_array_selects (*mev.get_model (), phi1);
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SASSERT (!m_ground_pob || vars.empty ());
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@ -3694,7 +3684,7 @@ bool context::create_children(pob& n, datalog::rule const& r,
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if (m_use_gpdr && preds.size() > 1) {
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SASSERT(vars.empty());
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return gpdr_create_split_children(n, r, phi, mev.get_model(), out);
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return gpdr_create_split_children(n, r, phi, mdl, out);
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}
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derivation *deriv = alloc(derivation, n, r, phi, vars);
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@ -3717,7 +3707,7 @@ bool context::create_children(pob& n, datalog::rule const& r,
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const ptr_vector<app> *aux = nullptr;
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expr_ref sum(m);
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sum = pt.get_origin_summary (*mev.get_model(), prev_level(n.level()),
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sum = pt.get_origin_summary (mdl, prev_level(n.level()),
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j, reach_pred_used[j], &aux);
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if (!sum) {
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dealloc(deriv);
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@ -3727,7 +3717,7 @@ bool context::create_children(pob& n, datalog::rule const& r,
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}
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// create post for the first child and add to queue
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pob* kid = deriv->create_first_child (*mev.get_model());
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pob* kid = deriv->create_first_child (mdl);
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// -- failed to create derivation, cleanup and bail out
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if (!kid) {
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@ -3744,8 +3734,8 @@ bool context::create_children(pob& n, datalog::rule const& r,
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// -- not satisfy 'T && phi'. It is possible to recover from
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// -- that more gracefully. For now, we just remove the
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// -- derivation completely forcing it to be recomputed
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if (m_weak_abs && (!mev.is_true(pt.get_transition(r)) ||
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!mev.is_true(n.post())))
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if (m_weak_abs && (!mdl.is_true(pt.get_transition(r)) ||
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!mdl.is_true(n.post())))
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{ kid->reset_derivation(); }
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out.push_back(kid);
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@ -940,7 +940,7 @@ class context {
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bool gpdr_check_reachability(unsigned lvl, model_search &ms);
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bool gpdr_create_split_children(pob &n, const datalog::rule &r,
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expr *trans,
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model_ref &mdl,
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model &mdl,
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pob_ref_buffer &out);
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// Functions used by search.
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@ -952,7 +952,7 @@ class context {
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bool is_reachable(pob &n);
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lbool expand_pob(pob &n, pob_ref_buffer &out);
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bool create_children(pob& n, const datalog::rule &r,
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model_evaluator_util &mdl,
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model &mdl,
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const vector<bool>& reach_pred_used,
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pob_ref_buffer &out);
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@ -306,7 +306,7 @@ bool context::gpdr_check_reachability(unsigned lvl, model_search &ms) {
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bool context::gpdr_create_split_children(pob &n, const datalog::rule &r,
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expr *trans,
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model_ref &mdl,
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model &mdl,
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pob_ref_buffer &out) {
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pred_transformer &pt = n.pt();
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ptr_vector<func_decl> preds;
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@ -330,7 +330,7 @@ bool context::gpdr_create_split_children(pob &n, const datalog::rule &r,
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expr_ref_vector lits(m);
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flatten_and(trans, lits);
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vector<expr_ref_vector> res(preds.size(), expr_ref_vector(m));
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_mbc(pmap, lits, *mdl.get(), res);
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_mbc(pmap, lits, mdl, res);
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// pick an order to process children
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unsigned_vector kid_order;
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@ -69,64 +69,6 @@ Notes:
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namespace spacer {
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/////////////////////////
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// model_evaluator_util
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//
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model_evaluator_util::model_evaluator_util(ast_manager& m) :
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m(m), m_mev(nullptr) {
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reset (nullptr);
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}
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model_evaluator_util::~model_evaluator_util() {reset (nullptr);}
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void model_evaluator_util::reset(model* model) {
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if (m_mev) {
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dealloc(m_mev);
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m_mev = nullptr;
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}
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m_model = model;
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if (m_model)
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m_mev = alloc(model_evaluator, *m_model);
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}
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bool model_evaluator_util::eval(expr *e, expr_ref &result, bool model_completion) {
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m_mev->set_model_completion (model_completion);
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try {
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m_mev->operator() (e, result);
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return true;
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}
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catch (model_evaluator_exception &ex) {
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(void)ex;
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TRACE("spacer_model_evaluator", tout << ex.msg () << "\n";);
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return false;
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}
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}
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bool model_evaluator_util::eval(const expr_ref_vector &v,
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expr_ref& res, bool model_completion) {
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expr_ref e(m);
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e = mk_and (v);
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return eval(e, res, model_completion);
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}
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bool model_evaluator_util::is_true(const expr_ref_vector &v) {
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expr_ref res(m);
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return eval (v, res, false) && m.is_true (res);
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}
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bool model_evaluator_util::is_false(expr *x) {
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expr_ref res(m);
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return eval(x, res, false) && m.is_false (res);
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}
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bool model_evaluator_util::is_true(expr *x) {
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expr_ref res(m);
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return eval(x, res, false) && m.is_true (res);
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}
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void subst_vars(ast_manager& m,
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app_ref_vector const& vars, model& mdl, expr_ref& fml) {
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model::scoped_model_completion _sc_(mdl, true);
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@ -876,36 +818,36 @@ namespace {
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}
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};
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bool mbqi_project_var(model_evaluator_util &mev, app* var, expr_ref &fml) {
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bool mbqi_project_var(model &mdl, app* var, expr_ref &fml) {
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ast_manager &m = fml.get_manager();
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model::scoped_model_completion _sc_(mdl, false);
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expr_ref val(m);
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mev.eval(var, val, false);
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val = mdl(var);
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TRACE("mbqi_project_verbose",
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tout << "MBQI: var: " << mk_pp(var, m) << "\n"
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<< "fml: " << fml << "\n";);
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tout << "MBQI: var: " << mk_pp(var, m) << "\n"
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<< "fml: " << fml << "\n";);
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expr_ref_vector terms(m);
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index_term_finder finder(m, var, terms);
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for_each_expr(finder, fml);
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TRACE("mbqi_project_verbose",
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tout << "terms:\n" << terms << "\n";);
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TRACE("mbqi_project_verbose", tout << "terms:\n" << terms << "\n";);
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for(expr * term : terms) {
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expr_ref tval(m);
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mev.eval(term, tval, false);
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tval = mdl(term);
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TRACE("mbqi_project_verbose",
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tout << "term: " << mk_pp(term, m)
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<< " tval: " << tval
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<< " val: " << mk_pp(val, m) << "\n";);
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<< " tval: " << tval << " val: " << val << "\n";);
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// -- if the term does not contain an occurrence of var
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// -- and is in the same equivalence class in the model
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if (tval == val && !occurs(var, term)) {
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TRACE("mbqi_project",
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tout << "MBQI: replacing " << mk_pp(var, m) << " with " << mk_pp(term, m) << "\n";);
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tout << "MBQI: replacing " << mk_pp(var, m)
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<< " with " << mk_pp(term, m) << "\n";);
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expr_safe_replace sub(m);
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sub.insert(var, term);
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sub(fml);
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@ -914,23 +856,23 @@ namespace {
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}
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TRACE("mbqi_project",
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tout << "MBQI: failed to eliminate " << mk_pp(var, m) << " from " << fml << "\n";);
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tout << "MBQI: failed to eliminate " << mk_pp(var, m)
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<< " from " << fml << "\n";);
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return false;
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}
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void mbqi_project(model &M, app_ref_vector &vars, expr_ref &fml) {
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void mbqi_project(model &mdl, app_ref_vector &vars, expr_ref &fml) {
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ast_manager &m = fml.get_manager();
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model_evaluator_util mev(m);
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mev.set_model(M);
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expr_ref tmp(m);
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model::scoped_model_completion _sc_(mdl, false);
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// -- evaluate to initialize mev cache
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mev.eval(fml, tmp, false);
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tmp = mdl(fml);
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tmp.reset();
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unsigned j = 0;
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for(app* v : vars)
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if (!mbqi_project_var(mev, v, fml))
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if (!mbqi_project_var(mdl, v, fml))
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vars[j++] = v;
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vars.shrink(j);
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}
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@ -40,7 +40,6 @@ Revision History:
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class model;
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class model_core;
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class model_evaluator;
|
||||
|
||||
namespace spacer {
|
||||
|
||||
|
|
@ -79,33 +78,6 @@ namespace spacer {
|
|||
typedef ptr_vector<func_decl> decl_vector;
|
||||
typedef obj_hashtable<func_decl> func_decl_set;
|
||||
|
||||
// TBD: deprecate
|
||||
class model_evaluator_util {
|
||||
ast_manager& m;
|
||||
model_ref m_model;
|
||||
model_evaluator* m_mev;
|
||||
|
||||
/// initialize with a given model. All previous state is lost. model can be NULL
|
||||
void reset (model *model);
|
||||
public:
|
||||
model_evaluator_util(ast_manager& m);
|
||||
~model_evaluator_util();
|
||||
|
||||
void set_model(model &model) {reset (&model);}
|
||||
model_ref &get_model() {return m_model;}
|
||||
ast_manager& get_ast_manager() const {return m;}
|
||||
|
||||
public:
|
||||
bool is_true (const expr_ref_vector &v);
|
||||
bool is_false(expr* x);
|
||||
bool is_true(expr* x);
|
||||
|
||||
bool eval (const expr_ref_vector &v, expr_ref &result, bool model_completion);
|
||||
/// evaluates an expression
|
||||
bool eval (expr *e, expr_ref &result, bool model_completion);
|
||||
// expr_ref eval(expr* e, bool complete=true);
|
||||
};
|
||||
|
||||
/**
|
||||
\brief hoist non-boolean if expressions.
|
||||
*/
|
||||
|
|
@ -146,7 +118,7 @@ namespace spacer {
|
|||
*/
|
||||
void ground_expr (expr *e, expr_ref &out, app_ref_vector &vars);
|
||||
|
||||
void mbqi_project (model &M, app_ref_vector &vars, expr_ref &fml);
|
||||
void mbqi_project(model &mdl, app_ref_vector &vars, expr_ref &fml);
|
||||
|
||||
bool contains_selects (expr* fml, ast_manager& m);
|
||||
void get_select_indices (expr* fml, app_ref_vector& indices, ast_manager& m);
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue