LCOV - code coverage report
Current view: top level - buildbot/coverage/build/src/smt - proof_post_processor_dsl.cpp (source / functions) Hit Total Coverage
Test: coverage.info Lines: 67 67 100.0 %
Date: 2025-03-22 11:41:52 Functions: 5 5 100.0 %
Branches: 53 84 63.1 %

           Branch data     Line data    Source code
       1                 :            : /******************************************************************************
       2                 :            :  * Top contributors (to current version):
       3                 :            :  *   Andrew Reynolds, Hans-Joerg Schurr, Haniel Barbosa
       4                 :            :  *
       5                 :            :  * This file is part of the cvc5 project.
       6                 :            :  *
       7                 :            :  * Copyright (c) 2009-2025 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                 :            :  * The module for post-processing proof nodes for DSL rewrite reconstruction.
      14                 :            :  */
      15                 :            : 
      16                 :            : #include "smt/proof_post_processor_dsl.h"
      17                 :            : 
      18                 :            : #include "options/base_options.h"
      19                 :            : #include "options/smt_options.h"
      20                 :            : #include "proof/proof_ensure_closed.h"
      21                 :            : 
      22                 :            : using namespace cvc5::internal::theory;
      23                 :            : 
      24                 :            : namespace cvc5::internal {
      25                 :            : namespace smt {
      26                 :            : 
      27                 :       3563 : ProofPostprocessDsl::ProofPostprocessDsl(Env& env, rewriter::RewriteDb* rdb)
      28                 :       3563 :     : EnvObj(env), d_rdbPc(env, rdb)
      29                 :            : {
      30                 :       3563 :   d_true = nodeManager()->mkConst(true);
      31                 :       3563 :   d_tmode = (options().proof.proofGranularityMode
      32                 :            :              == options::ProofGranularityMode::DSL_REWRITE_STRICT)
      33         [ -  + ]:       3563 :                 ? rewriter::TheoryRewriteMode::RESORT
      34                 :            :                 : rewriter::TheoryRewriteMode::STANDARD;
      35                 :       3563 : }
      36                 :            : 
      37                 :       3727 : void ProofPostprocessDsl::reconstruct(
      38                 :            :     std::vector<std::shared_ptr<ProofNode>>& pfs)
      39                 :            : {
      40         [ +  + ]:       3727 :   if (pfs.empty())
      41                 :            :   {
      42                 :        176 :     return;
      43                 :            :   }
      44         [ +  - ]:       7102 :   Trace("pp-dsl") << "Reconstruct proofs for " << pfs.size()
      45                 :       3551 :                   << " trusted steps..." << std::endl;
      46                 :            :   // run an updater for this callback
      47                 :       7102 :   ProofNodeUpdater pnu(d_env, *this, false);
      48         [ +  + ]:     483579 :   for (std::shared_ptr<ProofNode> p : pfs)
      49                 :            :   {
      50                 :     480028 :     d_traversing.clear();
      51         [ +  - ]:     480028 :     Trace("pp-dsl-process") << "BEGIN update" << std::endl;
      52                 :     480028 :     pnu.process(p);
      53         [ +  - ]:     480028 :     Trace("pp-dsl-process") << "END update" << std::endl;
      54 [ -  + ][ -  + ]:     480028 :     Assert(d_traversing.empty());
                 [ -  - ]
      55                 :            :   }
      56                 :            : }
      57                 :            : 
      58                 :    1150050 : bool ProofPostprocessDsl::shouldUpdate(std::shared_ptr<ProofNode> pn,
      59                 :            :                                        const std::vector<Node>& fa,
      60                 :            :                                        bool& continueUpdate)
      61                 :            : {
      62                 :    1150050 :   ProofRule id = pn->getRule();
      63                 :    1150050 :   continueUpdate = true;
      64                 :            :   // we should update if we
      65                 :            :   // - Have rule TRUST or TRUST_THEORY_REWRITE,
      66                 :            :   // - We have no premises
      67                 :            :   // - We are not already recursively expanding >= 3 steps of the above form.
      68                 :            :   // We check for the third criteria by tracking a d_traversing vector.
      69         [ +  + ]:    1136180 :   if ((id == ProofRule::TRUST || id == ProofRule::TRUST_THEORY_REWRITE)
      70 [ +  + ][ +  + ]:    2286230 :       && pn->getChildren().empty() && d_traversing.size() < 3)
         [ +  + ][ +  + ]
      71                 :            :   {
      72         [ +  - ]:     354448 :     Trace("pp-dsl-process") << "...push " << pn.get() << std::endl;
      73                 :     354448 :     d_traversing.push_back(pn);
      74                 :     354448 :     return true;
      75                 :            :   }
      76                 :     795603 :   return false;
      77                 :            : }
      78                 :            : 
      79                 :    1150050 : bool ProofPostprocessDsl::shouldUpdatePost(std::shared_ptr<ProofNode> pn,
      80                 :            :                                            const std::vector<Node>& fa)
      81                 :            : {
      82                 :            :   // clean up d_traversing at post-traversal
      83                 :            :   // note we may have pushed multiple copies of pn consecutively if a proof
      84                 :            :   // was updated to another trust step.
      85 [ +  + ][ +  + ]:    1150050 :   while (!d_traversing.empty() && d_traversing.back() == pn)
                 [ +  + ]
      86                 :            :   {
      87         [ +  - ]:     351138 :     Trace("pp-dsl-process") << "...pop " << pn.get() << std::endl;
      88                 :     351138 :     d_traversing.pop_back();
      89                 :            :   }
      90                 :     798913 :   return false;
      91                 :            : }
      92                 :            : 
      93                 :     354448 : bool ProofPostprocessDsl::update(Node res,
      94                 :            :                                  ProofRule id,
      95                 :            :                                  const std::vector<Node>& children,
      96                 :            :                                  const std::vector<Node>& args,
      97                 :            :                                  CDProof* cdp,
      98                 :            :                                  bool& continueUpdate)
      99                 :            : {
     100                 :     354448 :   continueUpdate = false;
     101 [ +  + ][ -  + ]:     354448 :   Assert(id == ProofRule::TRUST || id == ProofRule::TRUST_THEORY_REWRITE);
         [ -  + ][ -  - ]
     102 [ -  + ][ -  + ]:     354448 :   Assert(children.empty());
                 [ -  - ]
     103 [ -  + ][ -  + ]:     354448 :   Assert(!res.isNull());
                 [ -  - ]
     104                 :     354448 :   bool reqTrueElim = false;
     105                 :            :   // if not an equality, make (= res true).
     106         [ +  + ]:     354448 :   if (res.getKind() != Kind::EQUAL)
     107                 :            :   {
     108                 :       2288 :     res = res.eqNode(d_true);
     109                 :       2288 :     reqTrueElim = true;
     110                 :            :   }
     111                 :     354448 :   TheoryId tid = THEORY_LAST;
     112                 :     354448 :   MethodId mid = MethodId::RW_REWRITE;
     113                 :     354448 :   rewriter::TheoryRewriteMode tm = d_tmode;
     114                 :            :   // if theory rewrite, get diagnostic information
     115         [ +  + ]:     354448 :   if (id == ProofRule::TRUST_THEORY_REWRITE)
     116                 :            :   {
     117                 :     341296 :     builtin::BuiltinProofRuleChecker::getTheoryId(args[1], tid);
     118                 :     341296 :     getMethodId(args[2], mid);
     119                 :            :   }
     120         [ +  - ]:      13152 :   else if (id == ProofRule::TRUST)
     121                 :            :   {
     122                 :            :     TrustId trid;
     123                 :      13152 :     getTrustId(args[0], trid);
     124         [ +  + ]:      13152 :     if (trid == TrustId::MACRO_THEORY_REWRITE_RCONS_SIMPLE)
     125                 :            :     {
     126                 :            :       // If we are MACRO_THEORY_REWRITE_RCONS_SIMPLE, we do not use
     127                 :            :       // theory rewrites. This policy ensures that macro theory rewrites are
     128                 :            :       // disabled on rewrites which we use for their own reconstruction.
     129                 :       4608 :       tm = rewriter::TheoryRewriteMode::NEVER;
     130                 :            :     }
     131                 :            :   }
     132         [ +  - ]:     708896 :   Trace("pp-dsl") << "Prove " << res << " from " << tid << " / " << mid
     133                 :     354448 :                   << ", in mode " << tm << std::endl;
     134                 :     354448 :   int64_t recLimit = options().proof.proofRewriteRconsRecLimit;
     135                 :     354448 :   int64_t stepLimit = options().proof.proofRewriteRconsStepLimit;
     136                 :            :   // Attempt to reconstruct the proof of the equality into cdp using the
     137                 :            :   // rewrite database proof reconstructor.
     138                 :            :   // We record the subgoals in d_subgoals.
     139         [ +  + ]:     354448 :   if (d_rdbPc.prove(cdp, res[0], res[1], recLimit, stepLimit, tm))
     140                 :            :   {
     141                 :            :     // we will update this again, in case the elaboration introduced
     142                 :            :     // new trust steps
     143                 :     351138 :     continueUpdate = true;
     144                 :            :     // If we made (= res true) above, conclude the original res.
     145         [ +  + ]:     351138 :     if (reqTrueElim)
     146                 :            :     {
     147                 :        304 :       cdp->addStep(res[0], ProofRule::TRUE_ELIM, {res}, {});
     148                 :        152 :       res = res[0];
     149                 :            :     }
     150         [ +  - ]:     351138 :     Trace("check-dsl") << "Check closed..." << std::endl;
     151         [ +  - ]:     351138 :     pfgEnsureClosed(options(), res, cdp, "check-dsl", "check dsl");
     152                 :            :     // if successful, we update the proof
     153                 :     351138 :     return true;
     154                 :            :   }
     155                 :            :   // clean up traversing, since we are setting continueUpdate to false
     156 [ -  + ][ -  + ]:       3310 :   Assert (!d_traversing.empty());
                 [ -  - ]
     157         [ +  - ]:       3310 :   Trace("pp-dsl-process") << "...pop due to fail " << d_traversing.back().get() << std::endl;
     158                 :       3310 :   d_traversing.pop_back();
     159                 :            :   // otherwise no update
     160                 :       3310 :   return false;
     161                 :            : }
     162                 :            : 
     163                 :            : }  // namespace smt
     164                 :            : }  // namespace cvc5::internal

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