MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          half(0()) -> 0()
          half(s(0())) -> 0()
          half(s(s(x))) -> s(half(x))
          if(false(),x,y) -> log2(half(x),y)
          if(true(),x,s(y)) -> y
          inc(0()) -> 0()
          inc(s(x)) -> s(inc(x))
          le(0(),y) -> true()
          le(s(x),0()) -> false()
          le(s(x),s(y)) -> le(x,y)
          log(x) -> log2(x,0())
          log2(x,y) -> if(le(x,s(0())),x,inc(y))
      - Signature:
          {half/1,if/3,inc/1,le/2,log/1,log2/2} / {0/0,false/0,s/1,true/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {half,if,inc,le,log,log2} and constructors {0,false,s
          ,true}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE