MAYBE
* Step 1: UnsatPaths MAYBE
    + Considered Problem:
        Rules:
          0. f3(A,B) -> f12(A,B)    [A >= 10]          (?,1)
          1. f3(A,B) -> f3(1 + A,A) [9 >= A && A >= 6] (?,1)
          2. f3(A,B) -> f3(1 + A,A) [9 >= A && 4 >= A] (?,1)
          3. f3(A,B) -> f3(1 + C,B) [A = 5]            (?,1)
          4. f0(A,B) -> f3(0,B)     True               (1,1)
        Signature:
          {(f0,2);(f12,2);(f3,2)}
        Flow Graph:
          [0->{},1->{0,1,2,3},2->{0,1,2,3},3->{0,1,2,3},4->{0,1,2,3}]
        
    + Applied Processor:
        UnsatPaths
    + Details:
        We remove following edges from the transition graph: [(1,2),(1,3),(2,0),(2,1),(4,0),(4,1),(4,3)]
* Step 2: TrivialSCCs MAYBE
    + Considered Problem:
        Rules:
          0. f3(A,B) -> f12(A,B)    [A >= 10]          (?,1)
          1. f3(A,B) -> f3(1 + A,A) [9 >= A && A >= 6] (?,1)
          2. f3(A,B) -> f3(1 + A,A) [9 >= A && 4 >= A] (?,1)
          3. f3(A,B) -> f3(1 + C,B) [A = 5]            (?,1)
          4. f0(A,B) -> f3(0,B)     True               (1,1)
        Signature:
          {(f0,2);(f12,2);(f3,2)}
        Flow Graph:
          [0->{},1->{0,1},2->{2,3},3->{0,1,2,3},4->{2}]
        
    + Applied Processor:
        TrivialSCCs
    + Details:
        All trivial SCCs of the transition graph admit timebound 1.
* Step 3: Failure MAYBE
  + Considered Problem:
      Rules:
        0. f3(A,B) -> f12(A,B)    [A >= 10]          (1,1)
        1. f3(A,B) -> f3(1 + A,A) [9 >= A && A >= 6] (?,1)
        2. f3(A,B) -> f3(1 + A,A) [9 >= A && 4 >= A] (?,1)
        3. f3(A,B) -> f3(1 + C,B) [A = 5]            (?,1)
        4. f0(A,B) -> f3(0,B)     True               (1,1)
      Signature:
        {(f0,2);(f12,2);(f3,2)}
      Flow Graph:
        [0->{},1->{0,1},2->{2,3},3->{0,1,2,3},4->{2}]
      
  + Applied Processor:
      Failing "Open problems left."
  + Details:
      Open problems left.
MAYBE