NO
* Step 1: FromIts NO
    + Considered Problem:
        Rules:
          0. f0(A,B,C,D)  -> f6(E,0,C,D)                True                   (1,1)
          1. f6(A,B,C,D)  -> f10(-1 + A,1 + B,C,D)      [A >= 1]               (?,1)
          2. f10(A,B,C,D) -> f14(A,-1 + B,-1 + A,D)     [B >= 1]               (?,1)
          3. f14(A,B,C,D) -> f14(A,B,-1 + C,0)          [C >= 1]               (?,1)
          4. f14(A,B,C,D) -> f14(-1 + A,1 + B,-1 + C,E) [C >= 1 && 0 >= 1 + E] (?,1)
          5. f14(A,B,C,D) -> f14(-1 + A,1 + B,-1 + C,E) [C >= 1 && E >= 1]     (?,1)
          6. f14(A,B,C,D) -> f10(A,B,C,D)               [0 >= C]               (?,1)
          7. f10(A,B,C,D) -> f6(A,B,C,D)                [0 >= B]               (?,1)
          8. f6(A,B,C,D)  -> f25(A,B,C,D)               [0 >= A]               (?,1)
        Signature:
          {(f0,4);(f10,4);(f14,4);(f25,4);(f6,4)}
        Flow Graph:
          [0->{1,8},1->{2,7},2->{3,4,5,6},3->{3,4,5,6},4->{3,4,5,6},5->{3,4,5,6},6->{2,7},7->{1,8},8->{}]
        
    + Applied Processor:
        FromIts
    + Details:
        ()
* Step 2: CloseWith NO
    + Considered Problem:
        Rules:
          f0(A,B,C,D)  -> f6(E,0,C,D)                 True
          f6(A,B,C,D)  -> f10(-1 + A,1 + B,C,D)       [A >= 1]
          f10(A,B,C,D) -> f14(A,-1 + B,-1 + A,D)      [B >= 1]
          f14(A,B,C,D) -> f14(A,B,-1 + C,0)           [C >= 1]
          f14(A,B,C,D) -> f14(-1 + A,1 + B,-1 + C,E)  [C >= 1 && 0 >= 1 + E]
          f14(A,B,C,D) -> f14(-1 + A,1 + B,-1 + C,E)  [C >= 1 && E >= 1]
          f14(A,B,C,D) -> f10(A,B,C,D)                [0 >= C]
          f10(A,B,C,D) -> f6(A,B,C,D)                 [0 >= B]
          f6(A,B,C,D)  -> f25(A,B,C,D)                [0 >= A]
        Signature:
          {(f0,4);(f10,4);(f14,4);(f25,4);(f6,4)}
        Rule Graph:
          [0->{1,8},1->{2,7},2->{3,4,5,6},3->{3,4,5,6},4->{3,4,5,6},5->{3,4,5,6},6->{2,7},7->{1,8},8->{}]
    + Applied Processor:
        CloseWith False
    + Details:
        ()

NO