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

Action Reasoning:
To make curb_3 clear and have car_0 alone, let's move car_3 to an empty curb_0, freeing car_0.

New State Description:
- Curb_0: Car_3 is parked on it and is clear.- Curb_1: Car_1 is parked on it and is clear.- Curb_2: Car_2 is parked on it and is clear.- Curb_3: Car_0 is parked on it and is clear.- Car_1: Parked inside curb_1, clear.- Car_2: Parked inside curb_2, clear.- Car_0: Parked inside curb_3, clear.- Car_3: Parked on curb_0, clear.

Action Chosen:
(move-car-to-curb car3 car0 curb_0)
