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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 "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 |
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{ |
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public: |
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BVSolver(TheoryState& state, TheoryInferenceManager& inferMgr) |
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: 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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/** 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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/** 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 */ |