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/****************************************************************************** |
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* Top contributors (to current version): |
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* Haniel Barbosa |
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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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* The unsat core manager of SmtEngine. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__SMT__UNSAT_CORE_MANAGER_H |
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#define CVC5__SMT__UNSAT_CORE_MANAGER_H |
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#include "context/cdlist.h" |
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#include "expr/node.h" |
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#include "proof/proof_node.h" |
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#include "theory/quantifiers/instantiation_list.h" |
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namespace cvc5 { |
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namespace smt { |
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class Assertions; |
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/** |
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* This class is responsible for managing the proof output of SmtEngine, as |
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* well as setting up the global proof checker and proof node manager. |
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*/ |
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class UnsatCoreManager |
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{ |
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public: |
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UnsatCoreManager() {} |
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~UnsatCoreManager(){}; |
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/** Gets the unsat core. |
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* |
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* The unsat core is the intersection of the assertions in as and the free |
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* assumptions of the underlying refutation proof of pfn. Note that pfn must |
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* be a "final proof", which means that it's a proof of false under a scope |
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* containing all assertions. |
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* |
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* The unsat core is stored in the core argument. |
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*/ |
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void getUnsatCore(std::shared_ptr<ProofNode> pfn, |
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Assertions& as, |
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std::vector<Node>& core); |
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/** Gets the relevant instaniations for the refutation. |
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* |
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* The relevant instantiations are all the conclusions of proof nodes of type |
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* INSTANTIATE that occur in pfn. |
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* |
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* This method populates the insts map from quantified formulas occurring as |
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* premises of INSTANTIATE proof nodes to its instantiations, which are a |
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* matrix with each row corresponding to the terms with which the respective |
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* quantified formula is instiated. |
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*/ |
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void getRelevantInstantiations(std::shared_ptr<ProofNode> pfn, |
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std::map<Node, InstantiationList>& insts, |
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bool getDebugInfo = false); |
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}; /* class UnsatCoreManager */ |
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} // namespace smt |
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} // namespace cvc5 |
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#endif /* CVC5__SMT__UNSAT_CORE_MANAGER_H */ |