@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()

(void()) main()
main: scope:[main]  from @1
  [4] phi()
  [5] call new_ball 
  to:main::@return
main::@return: scope:[main]  from main
  [6] return 
  to:@return

(void()) new_ball((byte) new_ball::i)
new_ball: scope:[new_ball]  from main
  [7] *((const byte*) BALLS) ← ++ *((const byte*) BALLS)
  to:new_ball::@return
new_ball::@return: scope:[new_ball]  from new_ball
  [8] return 
  to:@return
