solidity/test/libsolidity/smtCheckerTests/math/addmod_mulmod_zero.sol

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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);
}
}
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// ====
// SMTEngine: all
// ----
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// 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.\nCounterexample:\n\nd = 0\nx = 0\n\nTransaction trace:\nC.constructor()\nC.f(0)
// Warning 6328: (80-93): CHC: Assertion violation happens here.\nCounterexample:\n\nd = 0\nx = 0\n\nTransaction trace:\nC.constructor()\nC.f(0)
// Warning 4281: (147-162): CHC: Division by zero happens here.\nCounterexample:\n\nd = 0\nx = 0\n\nTransaction trace:\nC.constructor()\nC.g(0)
// Warning 6328: (166-179): CHC: Assertion violation happens here.\nCounterexample:\n\nd = 0\nx = 0\n\nTransaction trace:\nC.constructor()\nC.g(0)