WORST_CASE(?,O(n^2))
* Step 1: Ara WORST_CASE(?,O(n^2))
    + Considered Problem:
        - Strict TRS:
            f(0()) -> s(0())
            f(s(0())) -> s(0())
            f(s(s(x))) -> f(f(s(x)))
        - Signature:
            {f/1} / {0/0,s/1}
        - Obligation:
            innermost runtime complexity wrt. defined symbols {f} and constructors {0,s}
    + Applied Processor:
        Ara {heuristics_ = NoHeuristics, minDegree = 1, maxDegree = 3, araTimeout = 60, araFindStrictRules = Nothing, araSmtSolver = MiniSMT}
    + Details:
        Signatures used:
        ----------------
          0 :: [] -(0)-> A(0, 4)
          0 :: [] -(0)-> A(4, 0)
          0 :: [] -(0)-> A(0, 0)
          f :: [A(0, 4)] -(2)-> A(0, 0)
          s :: [A(4, 0)] -(0)-> A(0, 4)
          s :: [A(4, 0)] -(4)-> A(4, 0)
          s :: [A(0, 0)] -(0)-> A(0, 0)
        
        
        Cost-free Signatures used:
        --------------------------
          0 :: [] -(0)-> A_cf(0, 0)
          0 :: [] -(0)-> A_cf(7, 0)
          0 :: [] -(0)-> A_cf(5, 0)
          f :: [A_cf(0, 0)] -(0)-> A_cf(0, 0)
          f :: [A_cf(0, 0)] -(0)-> A_cf(0, 4)
          s :: [A_cf(0, 0)] -(0)-> A_cf(0, 0)
          s :: [A_cf(7, 0)] -(0)-> A_cf(0, 7)
          s :: [A_cf(5, 0)] -(0)-> A_cf(0, 5)
        
        
        Base Constructor Signatures used:
        ---------------------------------
          0_A :: [] -(0)-> A(1, 0)
          0_A :: [] -(0)-> A(0, 1)
          s_A :: [A(1, 0)] -(1)-> A(1, 0)
          s_A :: [A(1, 0)] -(0)-> A(0, 1)
        
* Step 2: Open MAYBE
    - Strict TRS:
        f(0()) -> s(0())
        f(s(0())) -> s(0())
        f(s(s(x))) -> f(f(s(x)))
    - Signature:
        {f/1} / {0/0,s/1}
    - Obligation:
        innermost runtime complexity wrt. defined symbols {f} and constructors {0,s}
Following problems could not be solved:
  - Strict TRS:
      f(0()) -> s(0())
      f(s(0())) -> s(0())
      f(s(s(x))) -> f(f(s(x)))
  - Signature:
      {f/1} / {0/0,s/1}
  - Obligation:
      innermost runtime complexity wrt. defined symbols {f} and constructors {0,s}
WORST_CASE(?,O(n^2))