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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds, Morgan Deters, Mathias Preiner
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* Representation of unsat cores.
*/
#include "cvc4_private.h"
#ifndef CVC5__UNSAT_CORE_H
#define CVC5__UNSAT_CORE_H
#include <iosfwd>
#include <vector>
#include "expr/node.h"
namespace cvc5 {
/**
* An unsat core, which can optionally be initialized as a list of names
* or as a list of formulas.
*/
class UnsatCore
{
public:
UnsatCore() {}
/** Initialize using assertions */
UnsatCore(const std::vector<Node>& core);
/** Initialize using assertion names */
UnsatCore(std::vector<std::string>& names);
~UnsatCore() {}
/** Whether we are using names for this unsat core */
bool useNames() const { return d_useNames; }
/** Get the assertions in the unsat core */
const std::vector<Node>& getCore() const;
/** Get their names */
const std::vector<std::string>& getCoreNames() const;
typedef std::vector<Node>::const_iterator iterator;
typedef std::vector<Node>::const_iterator const_iterator;
const_iterator begin() const;
const_iterator end() const;
/**
* prints this UnsatCore object to the stream out.
*/
void toStream(std::ostream& out) const;
private:
/** Whether we are using names for this unsat core */
bool d_useNames;
/** The unsat core */
std::vector<Node> d_core;
/** The names of assertions in the above core */
std::vector<std::string> d_names;
};/* class UnsatCore */
/** Print the unsat core to stream out */
std::ostream& operator<<(std::ostream& out, const UnsatCore& core);
} // namespace cvc5
#endif /* CVC5__UNSAT_CORE_H */
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