YES

TRS:

  fib(N) -> sel(N,fib1(s(0()),s(0())))
  fib1(X,Y) -> cons(X,n__fib1(Y,n__add(X,Y)))
  add(0(),X) -> X
  add(s(X),Y) -> s(add(X,Y))
  sel(0(),cons(X,XS)) -> X
  sel(s(N),cons(X,XS)) -> sel(N,activate(XS))
  fib1(X1,X2) -> n__fib1(X1,X2)
  add(X1,X2) -> n__add(X1,X2)
  activate(n__fib1(X1,X2)) -> fib1(activate(X1),activate(X2))
  activate(n__add(X1,X2)) -> add(activate(X1),activate(X2))
  activate(X) -> X

max/plus interpretations on N:

  fib_A(x1) = max{3, 2 + x1}
  fib#_A(x1) = max{3, 2 + x1}
  sel_A(x1,x2) = max{3, 1 + x1, x2}
  sel#_A(x1,x2) = max{3, 1 + x1, x2}
  fib1_A(x1,x2) = max{3, x1, x2}
  fib1#_A(x1,x2) = max{3, x1, x2}
  s_A(x1) = max{3, x1}
  s#_A(x1) = max{3, x1}
  0_A = 1
  0#_A = 1
  cons_A(x1,x2) = max{3, x1, x2}
  cons#_A(x1,x2) = max{3, x1, x2}
  n__fib1_A(x1,x2) = max{3, x1, x2}
  n__fib1#_A(x1,x2) = max{3, x1, x2}
  n__add_A(x1,x2) = max{3, x1, x2}
  n__add#_A(x1,x2) = max{3, x1, x2}
  add_A(x1,x2) = max{4, x1, x2}
  add#_A(x1,x2) = max{4, x1, x2}
  activate_A(x1) = max{4, x1}
  activate#_A(x1) = max{4, x1}

precedence:

  fib > sel > activate > fib1 = 0 = add > s = cons = n__fib1 = n__add