Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To achieve the goal state, we need to move car_3 from behind car_1 to an empty curb, making both car_1 and curb_3 clear. The immediate step is to use (move-car-to-curb car_3 car_1 curb_2), as curb_2 is empty and car_3 is clear.

New State Description:
Curb_0 has car_0 parked, clear. Curb_1 has car_2 parked, clear. Curb_2 has car_3 parked, clear. Curb_3 has car_1 parked, clear. Car_0 is parked, clear. Car_1 is parked, clear. Car_2 is parked, clear. Car_3 is parked, clear. All curbs are clear.

Action Chosen:
(move-car-to-curb car_3 car_1 curb_2)
