MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          fac(x) -> help(x,0())
          help(x,c) -> if(lt(c,x),x,c)
          if(false(),x,c) -> s(0())
          if(true(),x,c) -> times(s(c),help(x,s(c)))
          lt(x,0()) -> false()
          lt(0(),s(x)) -> true()
          lt(s(x),s(y)) -> lt(x,y)
      - Signature:
          {fac/1,help/2,if/3,lt/2} / {0/0,false/0,s/1,times/2,true/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {fac,help,if,lt} and constructors {0,false,s,times,true}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE