pragma experimental SMTChecker; contract C { uint[][] c; function f() public { require(c.length == 0); c.push().push() = 2; assert(c.length == 1); assert(c[0].length == 1); assert(c[0][0] == 2); } function g() public { c.push().push() = 2; assert(c.length > 0); assert(c[c.length - 1].length == 1); assert(c[c.length - 1][c[c.length - 1].length - 1] == 2); // Fails assert(c[c.length - 1][c[c.length - 1].length - 1] == 200); } } // ---- // Warning 6328: (395-453): CHC: Assertion violation happens here.