solidity/test/libsolidity/smtCheckerTests/loops/for_1_false_positive.sol

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2018-11-09 17:50:06 +00:00
pragma experimental SMTChecker;
contract C
{
function f(uint x) public pure {
require(x < 100);
for(uint i = 0; i < 10; ++i) {
// Overflows due to resetting x.
x = x + 1;
}
// The assertion is true but x is touched and reset.
assert(x > 0);
}
}
// ----
// Warning: (176-181): Overflow (resulting value larger than 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) happens here
// Warning: (172-181): Overflow (resulting value larger than 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) happens here
// Warning: (244-257): Assertion violation happens here