solidity/test/libsolidity/smtCheckerTests/special/msg_value_3.sol

pragma experimental SMTChecker;
contract C {
	bool lock = true;
	function f() public {
		lock = false;
		g();
		lock = true;
	}
	function g() public payable {
		require(lock == false);
		assert(msg.value == 0);
	}
}