solidity/test/libsolidity/smtCheckerTests/math/addmod_mulmod_zero.sol
2023-03-09 14:59:32 +01:00

30 lines
970 B
Solidity

contract C {
function f(uint256 d) public pure {
uint x = addmod(1, 2, d);
assert(x < d);
}
function g(uint256 d) public pure {
uint x = mulmod(1, 2, d);
assert(x < d);
}
function h() public pure returns (uint256) {
uint x = mulmod(0, 1, 2);
uint y = mulmod(1, 0, 2);
assert(x == y);
uint z = addmod(0, 1, 2);
uint t = addmod(1, 0, 2);
assert(z == t);
}
}
// ====
// SMTEngine: all
// ----
// Warning 6321: (220-227): Unnamed return variable can remain unassigned. Add an explicit return with value to all non-reverting code paths or name the variable.
// Warning 4281: (61-76): CHC: Division by zero happens here.
// Warning 6328: (80-93): CHC: Assertion violation happens here.
// Warning 4281: (147-162): CHC: Division by zero happens here.
// Warning 6328: (166-179): CHC: Assertion violation happens here.
// Info 1391: CHC: 6 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.