Attempt Number: 3
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To reach the goal state, we need all cars parked alone on separate curbs. Currently, car_1 is double-parked behind car_2. First, move car_1 to the empty curb_3.

New State Description:
Curb_0 has car_0 parked, clear. Curb_1 has car_2 parked, clear. Car_1 has moved to curb_3 and is now parked, clear. Curb_2 has car_3 parked, clear.

Action Chosen:
(move-car-to-curb car_1 car_2 curb_3)
