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