solidity/test/libsolidity/smtCheckerTests/overflow/signed_sub_overflow.sol
2021-01-04 10:03:16 +01:00

11 lines
896 B
Solidity

pragma experimental SMTChecker;
contract C {
function f(int x, int y) public pure returns (int) {
return x - y;
}
}
// ----
// Warning 3944: (110-115): CHC: Underflow (resulting value less than -57896044618658097711785492504343953926634992332820282019728792003956564819968) happens here.\nCounterexample:\n\nx = (- 2)\ny = 57896044618658097711785492504343953926634992332820282019728792003956564819967\n = 0\n\nTransaction trace:\nC.constructor()\nC.f((- 2), 57896044618658097711785492504343953926634992332820282019728792003956564819967)
// Warning 4984: (110-115): CHC: Overflow (resulting value larger than 0x80 * 2**248 - 1) happens here.\nCounterexample:\n\nx = 0\ny = (- 57896044618658097711785492504343953926634992332820282019728792003956564819968)\n = 0\n\nTransaction trace:\nC.constructor()\nC.f(0, (- 57896044618658097711785492504343953926634992332820282019728792003956564819968))