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);
require(map[p] == 200);
map[p] -= map[p] - x;
assert(map[p] >= 0);
assert(map[p] < 90);
}
}
// ----
// Warning: (207-226): Assertion violation happens here