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

Action Reasoning:
Move car_1 from behind car_2 to a clear curb to make car_2 clear.

New State Description:
Curb_0: car_2 is parked at the curb, and it is clear.  Curb_1: car_0 is parked at the curb, and it is clear.  Curb_2: car_3 is parked at the curb, and it is clear.  Curb_3: car_1 is parked at the curb, and it is clear.

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