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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.
* ****************************************************************************
*
* Model class.
*/
#include "cvc5_private.h"
#ifndef CVC5__SMT__MODEL_H
#define CVC5__SMT__MODEL_H
#include <iosfwd>
#include <vector>
#include "expr/node.h"
namespace cvc5 {
namespace smt {
class Model;
std::ostream& operator<<(std::ostream&, const Model&);
/**
* A utility for representing a model for pretty printing.
*/
class Model {
public:
/** Constructor
* @param isKnownSat True if this model is associated with a "sat" response,
* or false if it is associated with an "unknown" response.
*/
Model(bool isKnownSat, const std::string& inputName);
/** get the input name (file name, etc.) this model is associated to */
std::string getInputName() const { return d_inputName; }
/**
* Returns true if this model is guaranteed to be a model of the input
* formula. Notice that when cvc5 answers "unknown", it may have a model
* available for which this method returns false. In this case, this model is
* only a candidate solution.
*/
bool isKnownSat() const { return d_isKnownSat; }
/** Get domain elements */
const std::vector<Node>& getDomainElements(TypeNode tn) const;
/** Get value */
Node getValue(TNode n) const;
/** Get separation logic heap and nil, return true if they have been set */
bool getHeapModel(Node& h, Node& nilEq) const;
//----------------------- model declarations
/**
* Set that tn is a sort that should be printed in the model, when applicable,
* based on the output language.
*
* @param tn The uninterpreted sort
* @param elements The domain elements of tn in the model
*/
void addDeclarationSort(TypeNode tn, const std::vector<Node>& elements);
/**
* Set that n is a variable that should be printed in the model, when
* applicable, based on the output language.
*
* @param n The variable
* @param value The value of the variable in the model
*/
void addDeclarationTerm(Node n, Node value);
/**
* Set the separation logic model information where h is the heap and nilEq
* is the value of sep.nil.
*
* @param h The value of heap in the heap model
* @param nilEq The value of sep.nil in the heap model
*/
void setHeapModel(Node h, Node nilEq);
/** get declared sorts */
const std::vector<TypeNode>& getDeclaredSorts() const;
/** get declared terms */
const std::vector<Node>& getDeclaredTerms() const;
//----------------------- end model declarations
protected:
/** the input name (file name, etc.) this model is associated to */
std::string d_inputName;
/**
* Flag set to false if the model is associated with an "unknown" response
* from the solver.
*/
bool d_isKnownSat;
/**
* The list of types to print, generally corresponding to declare-sort
* commands.
*/
std::vector<TypeNode> d_declareSorts;
/** The interpretation of the above sorts, as a list of domain elements. */
std::map<TypeNode, std::vector<Node>> d_domainElements;
/**
* The list of terms to print, is typically one-to-one with declare-fun
* commands.
*/
std::vector<Node> d_declareTerms;
/** Mapping terms to values */
std::map<Node, Node> d_declareTermValues;
/** Separation logic heap and nil */
Node d_sepHeap;
Node d_sepNilEq;
};
} // namespace smt
} // namespace cvc5
#endif /* CVC5__SMT__MODEL_H */
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