mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
8ea8a1eb99
This allows us to ask for a sort of a sort from its string representation parsed from an SMT-LIB solver response
103 lines
3.0 KiB
C++
103 lines
3.0 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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* Interface for solving Horn systems via smtlib2.
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*/
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#pragma once
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#include <libsmtutil/CHCSolverInterface.h>
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#include <libsmtutil/SMTLib2Interface.h>
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namespace solidity::smtutil
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{
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class CHCSmtLib2Interface: public CHCSolverInterface
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{
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public:
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struct SMTLib2Expression
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{
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using args_t = std::vector<SMTLib2Expression>;
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std::variant<std::string, args_t> data;
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std::string toString() const;
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};
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explicit CHCSmtLib2Interface(
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std::map<util::h256, std::string> const& _queryResponses = {},
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frontend::ReadCallback::Callback _smtCallback = {},
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SMTSolverChoice _enabledSolvers = SMTSolverChoice::All(),
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std::optional<unsigned> _queryTimeout = {}
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);
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void reset();
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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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/// Takes a function application _expr and checks for reachability.
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/// @returns solving result, an invariant, and counterexample graph, if possible.
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std::tuple<CheckResult, Expression, CexGraph> query(Expression const& _expr) override;
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void declareVariable(std::string const& _name, SortPointer const& _sort) override;
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std::string dumpQuery(Expression const& _expr);
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std::vector<std::string> unhandledQueries() const { return m_unhandledQueries; }
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SMTLib2Interface* smtlib2Interface() const { return m_smtlib2.get(); }
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private:
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std::string toSmtLibSort(Sort const& _sort);
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std::string toSmtLibSort(std::vector<SortPointer> const& _sort);
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void writeHeader();
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std::string forall();
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void declareFunction(std::string const& _name, SortPointer const& _sort);
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void write(std::string _data);
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std::string createQueryAssertion(std::string name);
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std::string createHeaderAndDeclarations();
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/// Communicates with the solver via the callback. Throws SMTSolverError on error.
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std::string querySolver(std::string const& _input);
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CexGraph graphFromZ3Proof(std::string const& _proof);
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CexGraph graphFromSMTLib2Expression(SMTLib2Expression const& _proof);
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/// Used to access toSmtLibSort, SExpr, and handle variables.
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std::unique_ptr<SMTLib2Interface> m_smtlib2;
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std::string m_accumulatedOutput;
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std::set<std::string> m_variables;
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std::map<util::h256, std::string> const& m_queryResponses;
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std::vector<std::string> m_unhandledQueries;
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frontend::ReadCallback::Callback m_smtCallback;
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SMTSolverChoice m_enabledSolvers;
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};
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}
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