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

Action Reasoning:
To place each car in the correct curb, I will use Curb_1 as a temporary space. Since Car_2 is clear and double-parked behind Car_1, I can move it to Curb_1, which is empty and clear.

New State Description:
Curb_0 contains Car_0, clear. Curb_1 contains Car_2, clear. Curb_2 contains Car_1, not clear. Curb_3 contains Car_3, clear. Car_0 is parked and clear. Car_1 is parked and not clear. Car_2 is parked and clear. Car_3 is parked and clear.

Action Chosen:
(move-car-to-curb car_2 car_1 curb_1)
