WORST_CASE(?,O(n^1))
* Step 1: Ara WORST_CASE(?,O(n^1))
    + Considered Problem:
        - Strict TRS:
            even(Cons(x,Nil())) -> False()
            even(Cons(x',Cons(x,xs))) -> even(xs)
            even(Nil()) -> True()
            goal(x,y) -> and(lte(x,y),even(x))
            lte(Cons(x,xs),Nil()) -> False()
            lte(Cons(x',xs'),Cons(x,xs)) -> lte(xs',xs)
            lte(Nil(),y) -> True()
            notEmpty(Cons(x,xs)) -> True()
            notEmpty(Nil()) -> False()
        - Weak TRS:
            and(False(),False()) -> False()
            and(False(),True()) -> False()
            and(True(),False()) -> False()
            and(True(),True()) -> True()
        - Signature:
            {and/2,even/1,goal/2,lte/2,notEmpty/1} / {Cons/2,False/0,Nil/0,True/0}
        - Obligation:
            innermost runtime complexity wrt. defined symbols {and,even,goal,lte,notEmpty} and constructors {Cons,False
            ,Nil,True}
    + Applied Processor:
        Ara {araHeuristics = NoHeuristics, minDegree = 1, maxDegree = 2, araTimeout = 5, araRuleShifting = Nothing}
    + Details:
        Signatures used:
        ----------------
          Cons :: ["A"(1) x "A"(1)] -(1)-> "A"(1)
          Cons :: ["A"(0) x "A"(0)] -(0)-> "A"(0)
          Cons :: ["A"(4) x "A"(4)] -(4)-> "A"(4)
          False :: [] -(0)-> "A"(0)
          Nil :: [] -(0)-> "A"(1)
          Nil :: [] -(0)-> "A"(4)
          Nil :: [] -(0)-> "A"(0)
          True :: [] -(0)-> "A"(0)
          and :: ["A"(0) x "A"(0)] -(0)-> "A"(0)
          even :: ["A"(1)] -(5)-> "A"(0)
          goal :: ["A"(8) x "A"(14)] -(16)-> "A"(0)
          lte :: ["A"(0) x "A"(4)] -(3)-> "A"(0)
          notEmpty :: ["A"(0)] -(15)-> "A"(0)
        
        
        Cost-free Signatures used:
        --------------------------
        
        
        
        Base Constructor Signatures used:
        ---------------------------------
          "Cons_A" :: ["A"(1) x "A"(1)] -(1)-> "A"(1)
          "False_A" :: [] -(0)-> "A"(1)
          "Nil_A" :: [] -(0)-> "A"(1)
          "True_A" :: [] -(0)-> "A"(1)
        

WORST_CASE(?,O(n^1))