
Fix the following UCLID5 code using the compiler feedback provided below.

```

(define x (input bit))
(define y (output bit))
(define r (register bit))

(init (and (= r #b0) (or (= x #b0) (= x #b1))))

(next (= r (or x r)))

(next (= y (not (xor x r))))

(define-property (always (eventually (= y #b1))))
```

Compiler feedback:

```
Syntax error on tmp.ucl, line 2: end of input expected.
(define x (input bit))

```
Reply with your UCLID5 code inside one unique code block.

I can definitely do that! Here is the UCLID5 code:
```
