solidity/libsmtutil/Z3Interface.h

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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
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#pragma once
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#include <libsmtutil/SolverInterface.h>
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#include <boost/noncopyable.hpp>
#include <z3++.h>
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namespace solidity::smtutil
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{
class Z3Interface: public SolverInterface, public boost::noncopyable
{
public:
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Z3Interface(std::optional<unsigned> _queryTimeout = {});
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void reset() override;
void push() override;
void pop() override;
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void declareVariable(std::string const& _name, SortPointer const& _sort) override;
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void addAssertion(Expression const& _expr) override;
std::pair<CheckResult, std::vector<std::string>> check(std::vector<Expression> const& _expressionsToEvaluate) override;
z3::expr toZ3Expr(Expression const& _expr);
smtutil::Expression fromZ3Expr(z3::expr const& _expr);
std::map<std::string, z3::expr> constants() const { return m_constants; }
std::map<std::string, z3::func_decl> functions() const { return m_functions; }
z3::context* context() { return &m_context; }
// Z3 "basic resources" limit.
// This is used to make the runs more deterministic and platform/machine independent.
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static int const resourceLimit = 1000000;
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private:
void declareFunction(std::string const& _name, Sort const& _sort);
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z3::sort z3Sort(Sort const& _sort);
z3::sort_vector z3Sort(std::vector<SortPointer> const& _sorts);
smtutil::SortPointer fromZ3Sort(z3::sort const& _sort);
std::vector<smtutil::SortPointer> fromZ3Sort(z3::sort_vector const& _sorts);
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z3::context m_context;
z3::solver m_solver;
std::map<std::string, z3::expr> m_constants;
std::map<std::string, z3::func_decl> m_functions;
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};
}