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

Action Reasoning:
To get closer to the goal state, car5 needs to move behind car0 in curb0. Moving car5 to double park behind car0 gets us closer to fulfilling curb0's requirements in the goal state.

New State Description:
Curb_0: Contains car0, parked and blocked, with car5 double parked and clear behind it.  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 and clear.  Car0: Parked and blocked in curb0 with car5 behind.  Car1: Parked and clear in curb2.  Car2: Parked and clear in curb1.  Car3: Parked and clear in curb3.  Car4: Parked and clear in curb4.  Car5: Double parked and clear behind car0 in curb0.

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