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https://github.com/Z3Prover/z3
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ac1552d194
move self-checking functionality to inside sat/smt so it can be used on-line and not just off-line. when self-validation fails, use vs, not clause, to check. It allows self-validation without checking and maintaining RUP validation. new options sat.smt.proof.check_rup, sat.smt.proof.check for online validation. z3 sat.smt.proof.check=true sat.euf=true /v:1 sat.smt.proof.check_rup=true /st file.smt2 sat.smt.proof=p.smt2
90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
/*++
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Copyright (c) 2020 Microsoft Corporation
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Module Name:
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euf_ackerman.h
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Abstract:
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Ackerman reduction plugin for EUF
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Author:
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Nikolaj Bjorner (nbjorner) 2020-08-25
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--*/
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#pragma once
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#include "util/dlist.h"
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#include "ast/euf/euf_egraph.h"
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#include "sat/smt/atom2bool_var.h"
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#include "sat/smt/sat_th.h"
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namespace euf {
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class solver;
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class ackerman {
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struct inference : dll_base<inference>{
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expr* a, *b, *c;
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unsigned m_count{ 0 };
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bool is_cc;
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inference(): a(nullptr), b(nullptr), c(nullptr), is_cc(false) {}
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inference(app* a, app* b): a(a), b(b), c(nullptr), is_cc(true) {}
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inference(expr* a, expr* b, expr* c): a(a), b(b), c(c), is_cc(false) {}
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};
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struct inference_eq {
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bool operator()(inference const* a, inference const* b) const {
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return a->is_cc == b->is_cc && a->a == b->a && a->b == b->b && a->c == b->c;
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}
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};
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struct inference_hash {
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unsigned operator()(inference const* a) const {
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SASSERT(a->a && a->b);
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return mk_mix(a->a->get_id(), a->b->get_id(), a->c ? a->c->get_id() : 0);
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}
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};
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typedef hashtable<inference*, inference_hash, inference_eq> table_t;
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solver& ctx;
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ast_manager& m;
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table_t m_table;
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inference* m_queue = nullptr;
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inference* m_tmp_inference = nullptr;
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unsigned m_gc_threshold = 100;
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unsigned m_high_watermark = 1000 ;
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unsigned m_num_propagations_since_last_gc = 0;
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void reset();
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void new_tmp();
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void insert(expr* a, expr* b, expr* lca);
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void insert(app* a, app* b);
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void insert();
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void remove(inference* inf);
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void add_cc(expr* a, expr* b);
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void add_eq(expr* a, expr* b, expr* c);
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void gc();
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bool enable_cc(app* a, app* b);
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bool enable_eq(expr* a, expr* b, expr* c);
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public:
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ackerman(solver& ctx, ast_manager& m);
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~ackerman();
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void cg_conflict_eh(expr * n1, expr * n2);
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void used_eq_eh(expr* a, expr* b, expr* lca);
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void used_cc_eh(app* a, app* b);
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void propagate();
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};
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};
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