solidity/test/libsolidity/smtCheckerTests/operators/compound_add_mapping.sol

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pragma experimental SMTChecker;
contract C
{
mapping (uint => uint) map;
function f(uint x, uint p) public {
require(x < 100);
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map[p] = 100;
map[p] += map[p] + x;
assert(map[p] < 300);
assert(map[p] < 110);
}
}
// ----
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// Warning 6328: (198-218): CHC: Assertion violation happens here.\nCounterexample:\n\nx = 0\np = 38\n\nTransaction trace:\nC.constructor()\nC.f(0, 38)