WORST_CASE(?,O(n^2))
* Step 1: Ara WORST_CASE(?,O(n^2))
    + Considered Problem:
        - Strict TRS:
            a__f(X1,X2) -> f(X1,X2)
            a__f(g(X),Y) -> a__f(mark(X),f(g(X),Y))
            mark(f(X1,X2)) -> a__f(mark(X1),X2)
            mark(g(X)) -> g(mark(X))
        - Signature:
            {a__f/2,mark/1} / {f/2,g/1}
        - Obligation:
            innermost runtime complexity wrt. defined symbols {a__f,mark} and constructors {f,g}
    + Applied Processor:
        Ara {heuristics_ = NoHeuristics, minDegree = 1, maxDegree = 3, araTimeout = 60, araFindStrictRules = Nothing, araSmtSolver = Z3}
    + Details:
        Signatures used:
        ----------------
          a__f :: [A(9, 5) x A(0, 0)] -(5)-> A(4, 5)
          f :: [A(14, 5) x A(0, 0)] -(9)-> A(9, 5)
          f :: [A(9, 5) x A(0, 0)] -(4)-> A(4, 5)
          f :: [A(0, 0) x A(0, 0)] -(0)-> A(0, 0)
          g :: [A(14, 5)] -(9)-> A(9, 5)
          g :: [A(0, 0)] -(0)-> A(0, 0)
          g :: [A(9, 5)] -(4)-> A(4, 5)
          mark :: [A(9, 5)] -(0)-> A(4, 5)
        
        
        Cost-free Signatures used:
        --------------------------
          a__f :: [A_cf(0, 0) x A_cf(0, 0)] -(0)-> A_cf(0, 0)
          a__f :: [A_cf(5, 0) x A_cf(0, 0)] -(5)-> A_cf(5, 0)
          f :: [A_cf(0, 0) x A_cf(0, 0)] -(0)-> A_cf(0, 0)
          f :: [A_cf(5, 0) x A_cf(0, 0)] -(5)-> A_cf(5, 0)
          g :: [A_cf(0, 0)] -(0)-> A_cf(0, 0)
          g :: [A_cf(5, 0)] -(5)-> A_cf(5, 0)
          mark :: [A_cf(0, 0)] -(0)-> A_cf(0, 0)
          mark :: [A_cf(5, 0)] -(1)-> A_cf(5, 0)
          mark :: [A_cf(5, 0)] -(0)-> A_cf(5, 0)
        
        
        Base Constructor Signatures used:
        ---------------------------------
          f_A :: [A(1, 0) x A(0, 0)] -(1)-> A(1, 0)
          f_A :: [A(1, 1) x A(0, 0)] -(0)-> A(0, 1)
          g_A :: [A(1, 0)] -(1)-> A(1, 0)
          g_A :: [A(1, 1)] -(0)-> A(0, 1)
        
* Step 2: Open MAYBE
    - Strict TRS:
        a__f(X1,X2) -> f(X1,X2)
        a__f(g(X),Y) -> a__f(mark(X),f(g(X),Y))
        mark(f(X1,X2)) -> a__f(mark(X1),X2)
        mark(g(X)) -> g(mark(X))
    - Signature:
        {a__f/2,mark/1} / {f/2,g/1}
    - Obligation:
        innermost runtime complexity wrt. defined symbols {a__f,mark} and constructors {f,g}
Following problems could not be solved:
  - Strict TRS:
      a__f(X1,X2) -> f(X1,X2)
      a__f(g(X),Y) -> a__f(mark(X),f(g(X),Y))
      mark(f(X1,X2)) -> a__f(mark(X1),X2)
      mark(g(X)) -> g(mark(X))
  - Signature:
      {a__f/2,mark/1} / {f/2,g/1}
  - Obligation:
      innermost runtime complexity wrt. defined symbols {a__f,mark} and constructors {f,g}
WORST_CASE(?,O(n^2))