mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
23 lines
612 B
Solidity
23 lines
612 B
Solidity
==== Source: base ====
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contract Base {
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uint x;
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address a;
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function f() internal returns (uint) {
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a = address(this);
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++x;
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return 2;
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}
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}
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==== Source: der ====
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pragma experimental SMTChecker;
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import "base";
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contract Der is Base {
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function g(uint y) public {
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require(x < 10); // added to restrict the search space and avoid non-determinsm in Spacer
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x += f();
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assert(y > x);
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}
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}
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// ----
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// Warning 6328: (der:205-218): CHC: Assertion violation happens here.\nCounterexample:\nx = 3, a = 0\ny = 0\n\nTransaction trace:\nDer.constructor()\nState: x = 0, a = 0\nDer.g(0)\n Base.f() -- internal call
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