MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          filter(s(s(X)),cons(Y,Z)) -> if(divides(s(s(X)),Y),filter(s(s(X)),Z),cons(Y,filter(X,sieve(Y))))
          from(X) -> cons(X,from(s(X)))
          head(cons(X,Y)) -> X
          if(false(),X,Y) -> Y
          if(true(),X,Y) -> X
          primes() -> sieve(from(s(s(0()))))
          sieve(cons(X,Y)) -> cons(X,filter(X,sieve(Y)))
          tail(cons(X,Y)) -> Y
      - Signature:
          {filter/2,from/1,head/1,if/3,primes/0,sieve/1,tail/1} / {0/0,cons/2,divides/2,false/0,s/1,true/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {filter,from,head,if,primes,sieve
          ,tail} and constructors {0,cons,divides,false,s,true}
  + Applied Processor:
      Ara {heuristics_ = NoHeuristics, minDegree = 1, maxDegree = 3, araTimeout = 60, araFindStrictRules = Nothing, araSmtSolver = MiniSMT}
  + Details:
      The input can not be schown compatible.
MAYBE