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Current view: top level - buildbot/coverage/build/src/theory/quantifiers - rewrite_verifier.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2025-01-22 12:40:44 Functions: 2 2 100.0 %
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /******************************************************************************
       2                 :            :  * Top contributors (to current version):
       3                 :            :  *   Andrew Reynolds
       4                 :            :  *
       5                 :            :  * This file is part of the cvc5 project.
       6                 :            :  *
       7                 :            :  * Copyright (c) 2009-2024 by the authors listed in the file AUTHORS
       8                 :            :  * in the top-level source directory and their institutional affiliations.
       9                 :            :  * All rights reserved.  See the file COPYING in the top-level source
      10                 :            :  * directory for licensing information.
      11                 :            :  * ****************************************************************************
      12                 :            :  *
      13                 :            :  * A class for finding unsoundness in the rewriter
      14                 :            :  */
      15                 :            : 
      16                 :            : #include "cvc5_private.h"
      17                 :            : 
      18                 :            : #ifndef CVC5__THEORY__QUANTIFIERS__REWRITE_VERIFIER_H
      19                 :            : #define CVC5__THEORY__QUANTIFIERS__REWRITE_VERIFIER_H
      20                 :            : 
      21                 :            : #include "expr/node.h"
      22                 :            : #include "theory/quantifiers/expr_miner.h"
      23                 :            : 
      24                 :            : namespace cvc5::internal {
      25                 :            : namespace theory {
      26                 :            : namespace quantifiers {
      27                 :            : 
      28                 :            : /**
      29                 :            :  * RewriteVerifier, which tests the rewritten form of terms provided to addTerm.
      30                 :            :  */
      31                 :            : class RewriteVerifier : public ExprMiner
      32                 :            : {
      33                 :            :  public:
      34                 :            :   RewriteVerifier(Env& env);
      35                 :         24 :   ~RewriteVerifier() {}
      36                 :            :   /**
      37                 :            :    * Add term to this module, which may add an equality of the form
      38                 :            :    * (= n Rewriter::rewrite(n)) to rewrites if we discover the rewrite is
      39                 :            :    * unsound.
      40                 :            :    */
      41                 :            :   bool addTerm(Node n, std::vector<Node>& rewrites) override;
      42                 :            : 
      43                 :            :  private:
      44                 :            :   /** check equivalent
      45                 :            :    *
      46                 :            :    * Check whether bv and bvr are equivalent on all sample points, print
      47                 :            :    * an error if not. Used with --sygus-rr-verify.
      48                 :            :    *
      49                 :            :    * @param bv The original term
      50                 :            :    * @param bvr The rewritten form of bvr
      51                 :            :    * @param out The output stream to write if the rewrite was unsound.
      52                 :            :    */
      53                 :            :   bool checkEquivalent(Node bv, Node bvr, std::ostream* out = nullptr);
      54                 :            : };
      55                 :            : 
      56                 :            : }  // namespace quantifiers
      57                 :            : }  // namespace theory
      58                 :            : }  // namespace cvc5::internal
      59                 :            : 
      60                 :            : #endif /* CVC5__THEORY__QUANTIFIERS__REWRITE_VERIFIER_H */

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