Attempt Number: 6
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To progress toward the goal state, car0 needs to be moved to clear curb_0. We will place car5, which is currently behind car0 and clear, behind car4 on curb_4 temporarily to allow car0 to move freely when conditions permit.

New State Description:
Curb_0: Contains car0; it remains the lone car parked and blocked as car5 has moved.Curb_1: Contains car2, parked and clear. Curb_2: Contains car1, parked and clear. Curb_3: Contains car3, parked and clear. Curb_4: Contains car4 parked with car5 now double parked behind and clear. Car0: Parched, blocked status remains unchanged in curb_0.Car1: Parked, clear in curb_2.Car2: Parked, clear in curb_1.Car3: Parked, clear in curb_3.Car4: Parked, blocked in curb_4 with car5 double parked behind.Car5: Double parked, clear behind car4 in curb_4.

Action Chosen:
(move-car-to-car car5 car0 car4)
