Goal:
  
  A : Type
  B : A → Type
  f : ∀ x : A, B x
  eos : CoreTactics.end_of_section
  fix_0 : ∀ l : list A, make_All_graph l (make_All l)
  ============================
   (∀ l : list A, make_All_graph l (make_All l))


DEBUG:Going to execute:
specialize_mutfix
DEBUG LTAC Evaluated term: CoreTactics.the_end_of_the_section