(board-truck driver1 truck1 s1)
(load-truck package3 truck1 s1)
(walk driver2 s0 p2-0)
(walk driver2 p2-0 s2)
(drive-truck truck1 s1 s0 driver1)
(load-truck package2 truck1 s0)
(load-truck package1 truck1 s0)
(drive-truck truck1 s0 s2 driver1)
(unload-truck package3 truck1 s2)
(drive-truck truck1 s2 s1 driver1)
(unload-truck package2 truck1 s1)
(unload-truck package1 truck1 s1)
; cost = 12 (unit cost)
