pragma experimental SMTChecker; contract A { uint public x = msg.value; constructor() { assert(x == 0); // can fail when A is constructed as part of C } } contract B { constructor() payable { assert(msg.value >= 0); // should hold } } contract C is A, B { constructor() A() B() payable { assert(msg.value >= 0); // should hold } } // ---- // Warning 6328: (93-107): CHC: Assertion violation happens here.\nCounterexample:\nx = 1\n\nTransaction trace:\nC.constructor(){ value: 1 }