GCC Code Coverage Report
Directory: . Exec Total Coverage
File: src/theory/bv/bv_solver.h Lines: 21 28 75.0 %
Date: 2021-09-16 Branches: 1 8 12.5 %

Line Exec Source
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/******************************************************************************
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 * Top contributors (to current version):
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 *   Mathias Preiner, Andrew Reynolds, Andres Noetzli
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 *
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 * This file is part of the cvc5 project.
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 *
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 * Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
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 * in the top-level source directory and their institutional affiliations.
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 * All rights reserved.  See the file COPYING in the top-level source
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 * directory for licensing information.
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 * ****************************************************************************
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 *
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 * Bit-vector solver interface.
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 *
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 * Describes the interface for the internal bit-vector solver of TheoryBV.
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 */
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#include "cvc5_private.h"
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#ifndef CVC5__THEORY__BV__BV_SOLVER_H
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#define CVC5__THEORY__BV__BV_SOLVER_H
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#include "smt/env_obj.h"
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#include "theory/theory.h"
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namespace cvc5 {
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namespace theory {
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namespace bv {
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class BVSolver : protected EnvObj
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{
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 public:
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  BVSolver(Env& env, TheoryState& state, TheoryInferenceManager& inferMgr)
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      : EnvObj(env), d_state(state), d_im(inferMgr){};
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  virtual ~BVSolver() {}
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  /**
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   * Returns true if we need an equality engine. If so, we initialize the
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   * information regarding how it should be setup. For details, see the
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   * documentation in Theory::needsEqualityEngine.
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   */
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  virtual bool needsEqualityEngine(EeSetupInfo& esi) { return false; }
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  virtual void finishInit(){};
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  virtual void preRegisterTerm(TNode n) = 0;
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  /**
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   * Forwarded from TheoryBV::preCheck().
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   */
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  virtual bool preCheck(Theory::Effort level = Theory::Effort::EFFORT_FULL)
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  {
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    return false;
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  }
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  /**
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   * Forwarded from TheoryBV::postCheck().
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   */
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  virtual void postCheck(Theory::Effort level = Theory::Effort::EFFORT_FULL){};
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  /**
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   * Forwarded from TheoryBV:preNotifyFact().
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   */
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  virtual bool preNotifyFact(
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      TNode atom, bool pol, TNode fact, bool isPrereg, bool isInternal)
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  {
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    return false;
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  }
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  /**
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   * Forwarded from TheoryBV::notifyFact().
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   */
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  virtual void notifyFact(TNode atom, bool pol, TNode fact, bool isInternal) {}
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  virtual bool needsCheckLastEffort() { return false; }
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  virtual void propagate(Theory::Effort e) {}
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  virtual TrustNode explain(TNode n)
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  {
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    Unimplemented() << "BVSolver propagated a node but doesn't implement the "
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                       "BVSolver::explain() interface!";
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    return TrustNode::null();
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  }
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  /** Additionally collect terms relevant for collecting model values. */
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  virtual void computeRelevantTerms(std::set<Node>& termSet) {}
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  /** Collect model values in m based on the relevant terms given by termSet */
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  virtual bool collectModelValues(TheoryModel* m,
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                                  const std::set<Node>& termSet) = 0;
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  virtual std::string identify() const = 0;
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  virtual TrustNode ppRewrite(TNode t) { return TrustNode::null(); }
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  virtual void ppStaticLearn(TNode in, NodeBuilder& learned) {}
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  virtual void presolve() {}
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  virtual void notifySharedTerm(TNode t) {}
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  virtual EqualityStatus getEqualityStatus(TNode a, TNode b)
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  {
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    return EqualityStatus::EQUALITY_UNKNOWN;
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  }
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  /**
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   * Get the current value of `node`.
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   *
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   * The `initialize` flag indicates whether bits should be zero-initialized
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   * if they don't have a value yet.
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   */
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  virtual Node getValue(TNode node, bool initialize) { return Node::null(); }
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  /** Called by abstraction preprocessing pass. */
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  virtual bool applyAbstraction(const std::vector<Node>& assertions,
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                                std::vector<Node>& new_assertions)
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  {
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    new_assertions.insert(
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        new_assertions.end(), assertions.begin(), assertions.end());
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    return false;
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  };
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 protected:
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  TheoryState& d_state;
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  TheoryInferenceManager& d_im;
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};
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}  // namespace bv
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}  // namespace theory
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}  // namespace cvc5
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#endif /* CVC5__THEORY__BV__BV_SOLVER_H */