solidity/test/libsolidity/smtCheckerTests/overflow/signed_guard_sub_overflow.sol

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contract C {
function f(int x, int y) public pure returns (int) {
require(x >= y);
return x - y;
}
}
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// ====
// SMTEngine: all
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// ----
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// Warning 4984: (96-101): 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))