Creating 2 producers and 2 consumers
#IGNORE [B:749] (B) . [B:473] (B) . >0 <0 . . >0 <0 . . >1 <1 . . >2 <2 . . >1 <1 . . >3 <3 . . forcing stop forced stop joining threads j:0 
#IGNORE !X xA 
#IGNORE (E) 
#IGNORE !X xA 
#IGNORE (E) >2 
#IGNORE [E] j:1 j:2 >4 
#IGNORE [E] j:3 
Joined all workers

#IGNORE SUM: 7

 session done.