From 7692dfc7d6d3309a03b14acdcb79b10763a77c18 Mon Sep 17 00:00:00 2001 From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com> Date: Thu, 12 Mar 2026 16:25:04 +0000 Subject: [PATCH] Delete injectivity_tactic.cpp (deprecated, replaced by injectivity_simplifier.h) Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> --- src/tactic/core/injectivity_tactic.cpp | 281 ------------------------- 1 file changed, 281 deletions(-) delete mode 100644 src/tactic/core/injectivity_tactic.cpp diff --git a/src/tactic/core/injectivity_tactic.cpp b/src/tactic/core/injectivity_tactic.cpp deleted file mode 100644 index eb6470ace..000000000 --- a/src/tactic/core/injectivity_tactic.cpp +++ /dev/null @@ -1,281 +0,0 @@ -/*++ -Copyright (c) 2017 Microsoft Corporation - -Module Name: - - injectivity_tactic.cpp - - -Author: - - Nicolas Braud-Santoni (t-nibrau) 2017-08-10 - ---*/ -#include -#include -#include "tactic/tactical.h" -#include "ast/rewriter/rewriter_def.h" -#include "tactic/core/injectivity_tactic.h" -#include "util/dec_ref_util.h" - - -class injectivity_tactic : public tactic { - - struct InjHelper : public obj_map*> { - ast_manager & m_manager; - - void insert(func_decl* const f, func_decl* const g) { - obj_hashtable *m; - if (! obj_map::find(f, m)) { - m_manager.inc_ref(f); - m = alloc(obj_hashtable); // TODO: Check we don't leak memory - obj_map::insert(f, m); - } - if (!m->contains(g)) { - m_manager.inc_ref(g); - m->insert(g); - } - } - - bool find(func_decl* const f, func_decl* const g) const { - obj_hashtable *m; - if(! obj_map::find(f, m)) - return false; - - return m->contains(g); - } - - InjHelper(ast_manager& m) : obj_map*>(), m_manager(m) {} - ~InjHelper() { - for(auto m : *this) { - for (func_decl* f : *m.get_value()) - m_manager.dec_ref(f); - - m_manager.dec_ref(m.m_key); - dealloc(m.m_value); - } - } - - }; - - struct finder { - ast_manager & m_manager; - InjHelper & inj_map; - - finder(ast_manager & m, InjHelper & map, params_ref const & p) : - m_manager(m), - inj_map(map) { - updt_params(p); - } - - ast_manager & m() const { return m_manager; } - - bool is_axiom(expr* n, func_decl* &f, func_decl* &g) { - if (!is_forall(n)) - return false; - - quantifier* const q = to_quantifier(n); - if (q->get_num_decls() != 1) - return false; - - const expr * const body = q->get_expr(); - - // n ~= forall x. body - - if (!m().is_eq(body)) - return false; - - const app * const body_a = to_app(body); - if (body_a->get_num_args() != 2) - return false; - - const expr* a = body_a->get_arg(0); - const expr* b = body_a->get_arg(1); - - // n ~= forall x. (= a b) - - if (is_app(a) && is_var(b)) { - // Do nothing - } - else if (is_app(b) && is_var(a)) { - std::swap(a, b); - } - else - return false; - - const app* const a_app = to_app(a); - const var* const b_var = to_var(b); - - if (b_var->get_idx() != 0) // idx is the De Bruijn's index - return false; - - if (a_app->get_num_args() != 1) - return false; - - g = a_app->get_decl(); - const expr* const a_body = a_app->get_arg(0); - - // n ~= forall x. (= (g a_body) x) - - if (!is_app(a_body)) - return false; - const app* const a_body_app = to_app(a_body); - if (a_body_app->get_num_args() != 1) // Maybe TODO: support multi-argument functions - return false; - - f = a_body_app->get_decl(); - const expr* const a_body_body = a_body_app->get_arg(0); - - // n ~= forall x. (= (g (f a_body_body)) x) - if (a_body_body != b_var) - return false; - - // n ~= forall x. (= (g (f x)) x) - - return true; - } - - void operator()(goal_ref const & goal, - goal_ref_buffer & result) { - tactic_report report("injectivity", *goal); - fail_if_unsat_core_generation("injectivity", goal); // TODO: Support UNSAT cores - fail_if_proof_generation("injectivity", goal); - - for (unsigned i = 0; i < goal->size(); ++i) { - func_decl *f, *g; - if (!is_axiom(goal->form(i), f, g)) continue; - TRACE(injectivity, tout << "Marking " << f->get_name() << " as injective" << std::endl;); - inj_map.insert(f, g); - // TODO: Record that g is f's pseudoinverse - } - } - - void updt_params(params_ref const & p) {} - }; - - struct rewriter_eq_cfg : public default_rewriter_cfg { - ast_manager & m_manager; - InjHelper & inj_map; - - ast_manager & m() const { return m_manager; } - - rewriter_eq_cfg(ast_manager & m, InjHelper & map, params_ref const & p) : m_manager(m), inj_map(map) { - } - - void cleanup_buffers() { - } - - void reset() { - } - - br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) { - if (num != 2) - return BR_FAILED; - - if (!m().is_eq(f)) - return BR_FAILED; - - // We are rewriting (= a b) - if (!is_app(args[0]) || !is_app(args[1])) - return BR_FAILED; - - const app* const a = to_app(args[0]); - const app* const b = to_app(args[1]); - - // a and b are applications of the same function - if (a->get_decl() != b->get_decl()) - return BR_FAILED; - - // Maybe TODO: Generalize to multi-parameter functions ? - if (a->get_num_args() != 1 || b->get_num_args() != 1) - return BR_FAILED; - - if (!inj_map.contains(a->get_decl())) - return BR_FAILED; - - SASSERT(a->get_arg(0)->get_sort() == b->get_arg(0)->get_sort()); - TRACE(injectivity, tout << "Rewriting (= " << mk_ismt2_pp(args[0], m()) << - " " << mk_ismt2_pp(args[1], m()) << ")" << std::endl;); - result = m().mk_eq(a->get_arg(0), b->get_arg(0)); - result_pr = nullptr; - return BR_DONE; - } - - }; - - struct rewriter_eq : public rewriter_tpl { - rewriter_eq_cfg m_cfg; - rewriter_eq(ast_manager & m, InjHelper & map, params_ref const & p) : - rewriter_tpl(m, m.proofs_enabled(), m_cfg), - m_cfg(m, map, p) { - } - }; - - struct rewriter_inverse { }; - - finder * m_finder; - rewriter_eq * m_eq; - InjHelper * m_map; - params_ref m_params; - ast_manager & m_manager; - -public: - injectivity_tactic(ast_manager & m, params_ref const & p): - m_params(p), - m_manager(m) { - TRACE(injectivity, tout << "constructed new tactic" << std::endl;); - m_map = alloc(InjHelper, m); - m_finder = alloc(finder, m, *m_map, p); - m_eq = alloc(rewriter_eq, m, *m_map, p); - } - - tactic * translate(ast_manager & m) override { - return alloc(injectivity_tactic, m, m_params); - } - - ~injectivity_tactic() override { - dealloc(m_finder); - dealloc(m_eq); - dealloc(m_map); - } - - char const* name() const override { return "injectivity"; } - - void updt_params(params_ref const & p) override { - m_params.append(p); - m_finder->updt_params(m_params); - } - - void collect_param_descrs(param_descrs & r) override { - insert_max_memory(r); - insert_produce_models(r); - } - - void operator()(goal_ref const & g, - goal_ref_buffer & result) override { - (*m_finder)(g, result); - - for (unsigned i = 0; i < g->size(); ++i) { - expr* curr = g->form(i); - expr_ref rw(m_manager); - proof_ref pr(m_manager); - (*m_eq)(curr, rw, pr); - g->update(i, rw, pr, g->dep(i)); - } - result.push_back(g.get()); - } - - void cleanup() override { - InjHelper * m = alloc(InjHelper, m_manager); - finder * f = alloc(finder, m_manager, *m, m_params); - rewriter_eq * r = alloc(rewriter_eq, m_manager, *m, m_params); - std::swap(m, m_map), std::swap(f, m_finder), std::swap(r, m_eq); - dealloc(m), dealloc(f), dealloc(r); - } - - -}; - -tactic * mk_injectivity_tactic(ast_manager & m, params_ref const & p) { - return alloc(injectivity_tactic, m, p); -}