Warning: Return value of low-level calls not used. --> model_checker_invariants_contract_reentrancy/input.sol:6:3: | 6 | _a.call(""); | ^^^^^^^^^^^ Info: Contract invariant(s) for model_checker_invariants_contract_reentrancy/input.sol:test: ((x <= 0) || true) Reentrancy property(ies) for model_checker_invariants_contract_reentrancy/input.sol:test: (((!(x <= 0) || (x' <= 0)) && (!(x <= 0) || ( <= 0))) || true) = 0 -> no errors = 1 -> Assertion failed at assert(x == 0)