solidity/test/libsolidity/smtCheckerTests/functions/functions_bound_1_fail.sol

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pragma experimental SMTChecker;
library L
{
function add(uint x, uint y) internal pure returns (uint) {
require(x < 1000);
require(y < 1000);
return x + y;
}
}
contract C
{
using L for uint;
function f(uint x) public pure {
uint y = x.add(999);
assert(y < 1000);
}
}
// ----
// Warning: (261-277): Assertion violation happens here