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

Action Reasoning:
To progress towards the goal state, we need car_1 in curb_1 and car_3 in curb_3 with no other cars, which means moving car_3 from behind car_1 to an empty curb. Since curb_2 is empty, we can move car_3 there.

New State Description:
Curb_0 contains car_0, clear. Curb_1 contains car_2, clear. Curb_2 contains car_3, clear. Curb_3 contains car_1, clear. Car_0 is parked and clear. Car_1 is parked and clear. Car_2 is parked and clear. Car_3 is parked and clear.

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