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https://github.com/ethereum/solidity
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18 lines
547 B
Solidity
18 lines
547 B
Solidity
pragma experimental SMTChecker;
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contract C
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{
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function f(uint8 x) public pure returns (uint8) {
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x = 100;
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uint8 y = x * 3;
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assert(y == 44);
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x = 128;
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y = x * 4;
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assert(y == 0);
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return y;
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}
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}
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// ----
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// Warning 4984: (120-125): CHC: Overflow (resulting value larger than 255) happens here.\nCounterexample:\n\nx = 100\n = 0\n\nTransaction trace:\nconstructor()\nf(0)
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// Warning 4984: (163-168): CHC: Overflow (resulting value larger than 255) happens here.\nCounterexample:\n\nx = 128\n = 0\n\nTransaction trace:\nconstructor()\nf(0)
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