pragma experimental SMTChecker; //pragma abicoder v2; contract C { struct S { uint[2] a; uint u; } S public s; function f() public view { uint u = this.s(); assert(u == s.u); // should hold assert(u == 1); // should fail } } // ---- // Warning 6328: (207-221): CHC: Assertion violation happens here.\nCounterexample:\ns = {a: [0, 0], u: 0}\n\n\n\nTransaction trace:\nconstructor()\nState: s = {a: [0, 0], u: 0}\nf()