contract C { function f() public pure { int16 x = 1; int16 y = 0; assert(x | y == 1); x = 0; y = 0; assert(x | y != 0); y = 240; x = 15; int16 z = x | y; assert(z == 255); x = -1; y = 200; assert(x | y == x); assert(x | z != -1); } } // ==== // SMTEngine: all // ---- // Warning 6328: (111-129): CHC: Assertion violation happens here. // Warning 6328: (234-253): CHC: Assertion violation happens here. // Info 1391: CHC: 3 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.