NO
* Step 1: FromIts NO
    + Considered Problem:
        Rules:
          0. f0(A,B,C,D) -> f6(1,C,C,D)  True                         (1,1)
          1. f6(A,B,C,D) -> f6(A,E,C,E)  [B >= 2 + A && E^2 >= 1 + C] (?,1)
          2. f6(A,B,C,D) -> f6(E,B,C,E)  [B >= 2 + A && C >= E^2]     (?,1)
          3. f6(A,B,C,D) -> f16(A,B,C,D) [1 + A >= B]                 (?,1)
        Signature:
          {(f0,4);(f16,4);(f6,4)}
        Flow Graph:
          [0->{1,2,3},1->{1,2,3},2->{1,2,3},3->{}]
        
    + Applied Processor:
        FromIts
    + Details:
        ()
* Step 2: CloseWith NO
    + Considered Problem:
        Rules:
          f0(A,B,C,D) -> f6(1,C,C,D)   True
          f6(A,B,C,D) -> f6(A,E,C,E)   [B >= 2 + A && E^2 >= 1 + C]
          f6(A,B,C,D) -> f6(E,B,C,E)   [B >= 2 + A && C >= E^2]
          f6(A,B,C,D) -> f16(A,B,C,D)  [1 + A >= B]
        Signature:
          {(f0,4);(f16,4);(f6,4)}
        Rule Graph:
          [0->{1,2,3},1->{1,2,3},2->{1,2,3},3->{}]
    + Applied Processor:
        CloseWith False
    + Details:
        ()

NO