2021-01-25 17:17:56 +00:00
|
|
|
contract A {
|
|
|
|
function f() public virtual returns (uint256 r) {
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
contract B is A {
|
|
|
|
function f() public virtual override returns (uint256 r) {
|
|
|
|
return super.f() + 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
contract C is A {
|
|
|
|
function f() public virtual override returns (uint256 r) {
|
|
|
|
return 2 * (super.f() + 4);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
contract D is B, C {
|
|
|
|
function f() public override(B, C) returns (uint256 r) {
|
|
|
|
r = super.f() + 8;
|
|
|
|
assert(r == 22); // should hold
|
|
|
|
assert(r == 20); // should fail
|
|
|
|
assert(r == 18); // should fail
|
|
|
|
}
|
|
|
|
}
|
2021-03-31 15:11:54 +00:00
|
|
|
// ====
|
|
|
|
// SMTEngine: all
|
2023-07-24 16:33:43 +00:00
|
|
|
// SMTIgnoreCex: no
|
2021-01-25 17:17:56 +00:00
|
|
|
// ----
|
2023-07-24 16:33:43 +00:00
|
|
|
// Warning 6328: (443-458): CHC: Assertion violation happens here.\nCounterexample:\n\nr = 22\n\nTransaction trace:\nD.constructor()\nD.f()\n C.f() -- internal call\n B.f() -- internal call\n A.f() -- internal call
|
|
|
|
// Warning 6328: (477-492): CHC: Assertion violation happens here.\nCounterexample:\n\nr = 22\n\nTransaction trace:\nD.constructor()\nD.f()\n C.f() -- internal call\n B.f() -- internal call\n A.f() -- internal call
|
2023-02-09 16:07:13 +00:00
|
|
|
// Info 1391: CHC: 5 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
|