MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          exp(x,0()) -> s(0())
          exp(x,s(y)) -> times(x,exp(x,y))
          ge(x,0()) -> true()
          ge(0(),s(x)) -> false()
          ge(s(x),s(y)) -> ge(x,y)
          help(false(),c,x,y,z) -> towerIter(s(c),x,y,exp(y,z))
          help(true(),c,x,y,z) -> z
          plus(0(),x) -> x
          plus(s(x),y) -> s(plus(x,y))
          times(0(),y) -> 0()
          times(s(x),y) -> plus(y,times(x,y))
          tower(x,y) -> towerIter(0(),x,y,s(0()))
          towerIter(c,x,y,z) -> help(ge(c,x),c,x,y,z)
      - Signature:
          {exp/2,ge/2,help/5,plus/2,times/2,tower/2,towerIter/4} / {0/0,false/0,s/1,true/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {exp,ge,help,plus,times,tower
          ,towerIter} and constructors {0,false,s,true}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE