mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Z3 specific Horn solver interface.
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*/
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#pragma once
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#include <libsmtutil/CHCSolverInterface.h>
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#include <libsmtutil/Z3Interface.h>
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#include <tuple>
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#include <vector>
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namespace solidity::smtutil
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{
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class Z3CHCInterface: public CHCSolverInterface
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{
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public:
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Z3CHCInterface(std::optional<unsigned> _queryTimeout = {});
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/// Forwards variable declaration to Z3Interface.
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void declareVariable(std::string const& _name, SortPointer const& _sort) override;
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void registerRelation(Expression const& _expr) override;
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void addRule(Expression const& _expr, std::string const& _name) override;
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std::tuple<CheckResult, Expression, CexGraph> query(Expression const& _expr) override;
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Z3Interface* z3Interface() const { return m_z3Interface.get(); }
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void setSpacerOptions(bool _preProcessing = true);
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private:
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/// Constructs a nonlinear counterexample graph from the refutation.
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CHCSolverInterface::CexGraph cexGraph(z3::expr const& _proof);
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/// @returns the fact from a proof node.
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z3::expr fact(z3::expr const& _node);
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/// @returns @a _predicate's name.
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std::string name(z3::expr const& _predicate);
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/// @returns the arguments of @a _predicate.
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std::vector<std::string> arguments(z3::expr const& _predicate);
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// Used to handle variables.
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std::unique_ptr<Z3Interface> m_z3Interface;
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z3::context* m_context;
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// Horn solver.
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z3::fixedpoint m_solver;
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std::tuple<unsigned, unsigned, unsigned, unsigned> m_version = std::tuple(0, 0, 0, 0);
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};
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}
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