solidity/test/libsolidity/smtCheckerTests/operators/compound_sub_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] = 200;
map[p] -= map[p] - x;
assert(map[p] >= 0);
assert(map[p] < 90);
}
}
// ----
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// Warning: (197-216): Assertion violation happens here