```
module main {
    type Side;
    const left: Side;
    const right: Side;

    // Variables representing locations
    var ferryman : Side;
    var goat : Side;
    var cabbage : Side;
    var wolf : Side;
    var carry : Side;

    // Initial state
    init
    {
        ferryman = left;
        goat = left;
        cabbage = left;
        wolf = left;
        carry = left;
    }

    // Transition relation
    next
    {
        ferryman' = carry';
        wolf' = (carry = wolf) ? carry : wolf;
        goat' = (carry = goat) ? carry : goat;
        cabbage' = (carry = cabbage) ? carry : cabbage;
        carry' = (carry = left) ? right : left;
    }

    // Safety condition: goat and cabbage or goat and wolf must not be alone
    constraint
    {
        (goat = cabbage => ferryman = goat) && (goat = wolf => ferryman = goat);
    }

    // Goal state
    define goalState : bool {
        ferryman = right && goat = right && cabbage = right && wolf = right;
    }

    // Reachability property: Can we achieve the goal state without violating constraints?
    control {
        check;
    }
    synth invariant;
}
```
This code fixes the prior syntax issues by replacing the original 'if' syntax with ternary '?' operator statements and ensuring initial and transition states are correctly written in the UCLID5 syntax.