Plan Found:
  
  (unstack b c)
  (put-down b)
  (unstack c a)
  (put-down c)
  (unstack a d)
  (stack a b)
  (pick-up c)
  (stack c a)
  (pick-up d)
  (stack d c)


Output:
 --- OK.
 Match tree built with 40 nodes.

PDDL problem description loaded: 
	Domain: BLOCKS
	Problem: BLOCKS-4-1
	#Actions: 40
	#Fluents: 29
Landmarks found: 3
Starting search with IW (time budget is 60 secs)...
rel_plan size: 6
#RP_fluents 10
Caption
{#goals, #UNnachieved,  #Achieved} -> IW(max_w)

{3/3/0}:IW(1) -> [2][3][4][5][6][7]rel_plan size: 4
#RP_fluents 7
{3/2/1}:IW(1) -> [2][3]rel_plan size: 2
#RP_fluents 4
{3/1/2}:IW(1) -> [2][3]rel_plan size: 0
#RP_fluents 0Plan found with cost: 10
Total time: -1.8999e-10
Nodes generated during search: 33
Nodes expanded during search: 17
IW search completed