Warning: Return value of low-level calls not used.
 --> model_checker_invariants_all/input.sol:6:3:
  |
6 | 		_a.call("");
  | 		^^^^^^^^^^^

Info: Contract invariant(s) for model_checker_invariants_all/input.sol:test:
((x <= 0) || true)
Reentrancy property(ies) for model_checker_invariants_all/input.sol:test:
(((!(x <= 0) || (x' <= 0)) && (!(x <= 0) || (<errorCode> <= 0))) || true)
<errorCode> = 0 -> no errors
<errorCode> = 1 -> Assertion failed at assert(x == 0)
