YES
* Step 1: Looptree YES
    + Considered Problem:
        Rules:
          0. zip3(A,B,C)  -> zip3(-1 + A,-1 + B,-1 + C) [A >= 1 && B >= 1 && C >= 1] (?,1)
          1. start(A,B,C) -> zip3(A,B,C)                True                         (1,1)
        Signature:
          {(start,3);(zip3,3)}
        Flow Graph:
          [0->{0},1->{0}]
        
    + Applied Processor:
        Looptree
    + Details:
        We construct a looptree:
          P: [0,1]
          |
          `- p:[0] c: [0]

YES