MAYBE

We are left with following problem, upon which TcT provides the
certificate MAYBE.

Strict Trs:
  { a__fib(N) -> a__sel(mark(N), a__fib1(s(0()), s(0())))
  , a__fib(X) -> fib(X)
  , a__sel(X1, X2) -> sel(X1, X2)
  , a__sel(s(N), cons(X, XS)) -> a__sel(mark(N), mark(XS))
  , a__sel(0(), cons(X, XS)) -> mark(X)
  , mark(s(X)) -> s(mark(X))
  , mark(0()) -> 0()
  , mark(cons(X1, X2)) -> cons(mark(X1), X2)
  , mark(fib1(X1, X2)) -> a__fib1(mark(X1), mark(X2))
  , mark(add(X1, X2)) -> a__add(mark(X1), mark(X2))
  , mark(fib(X)) -> a__fib(mark(X))
  , mark(sel(X1, X2)) -> a__sel(mark(X1), mark(X2))
  , a__fib1(X, Y) -> cons(mark(X), fib1(Y, add(X, Y)))
  , a__fib1(X1, X2) -> fib1(X1, X2)
  , a__add(X1, X2) -> add(X1, X2)
  , a__add(s(X), Y) -> s(a__add(mark(X), mark(Y)))
  , a__add(0(), X) -> mark(X) }
Obligation:
  innermost runtime complexity
Answer:
  MAYBE

None of the processors succeeded.

Details of failed attempt(s):
-----------------------------
1) 'empty' failed due to the following reason:
   
   Empty strict component of the problem is NOT empty.

2) 'Best' failed due to the following reason:
   
   None of the processors succeeded.
   
   Details of failed attempt(s):
   -----------------------------
   1) 'WithProblem (timeout of 60 seconds)' failed due to the
      following reason:
      
      Computation stopped due to timeout after 60.0 seconds.
   
   2) 'Best' failed due to the following reason:
      
      None of the processors succeeded.
      
      Details of failed attempt(s):
      -----------------------------
      1) 'WithProblem (timeout of 30 seconds) (timeout of 60 seconds)'
         failed due to the following reason:
         
         Computation stopped due to timeout after 30.0 seconds.
      
      2) 'Best' failed due to the following reason:
         
         None of the processors succeeded.
         
         Details of failed attempt(s):
         -----------------------------
         1) 'Polynomial Path Order (PS) (timeout of 60 seconds)' failed due
            to the following reason:
            
            The input cannot be shown compatible
         
         2) 'bsearch-popstar (timeout of 60 seconds)' failed due to the
            following reason:
            
            The input cannot be shown compatible
         
      
      3) 'Fastest (timeout of 5 seconds) (timeout of 60 seconds)' failed
         due to the following reason:
         
         None of the processors succeeded.
         
         Details of failed attempt(s):
         -----------------------------
         1) 'Bounds with minimal-enrichment and initial automaton 'match''
            failed due to the following reason:
            
            match-boundness of the problem could not be verified.
         
         2) 'Bounds with perSymbol-enrichment and initial automaton 'match''
            failed due to the following reason:
            
            match-boundness of the problem could not be verified.
         
      
   


Arrrr..