[SMTChecker] Integration with CVC4

1 files changed, 62 insertions, 0 deletions

diff --git a/libsolidity/formal/CVC4Interface.h b/libsolidity/formal/CVC4Interface.h
new file mode 100644
index 00000000..cfaeb412
--- /dev/null
+++ b/libsolidity/formal/CVC4Interface.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/>.
+*/
+
+#pragma once
+
+#include <libsolidity/formal/SolverInterface.h>
+
+#include <boost/noncopyable.hpp>
+
+#include <cvc4/cvc4.h>
+
+namespace dev
+{
+namespace solidity
+{
+namespace smt
+{
+
+class CVC4Interface: public SolverInterface, public boost::noncopyable
+{
+public:
+	CVC4Interface();
+
+	void reset() override;
+
+	void push() override;
+	void pop() override;
+
+	Expression newFunction(std::string _name, Sort _domain, Sort _codomain) override;
+	Expression newInteger(std::string _name) override;
+	Expression newBool(std::string _name) override;
+
+	void addAssertion(Expression const& _expr) override;
+	std::pair<CheckResult, std::vector<std::string>> check(std::vector<Expression> const& _expressionsToEvaluate) override;
+
+private:
+	CVC4::Expr toCVC4Expr(Expression const& _expr);
+	CVC4::Type cvc4Sort(smt::Sort _sort);
+
+	CVC4::ExprManager m_context;
+	CVC4::SmtEngine m_solver;
+	std::map<std::string, CVC4::Expr> m_constants;
+	std::map<std::string, CVC4::Expr> m_functions;
+};
+
+}
+}
+}