anchor.diff:  %% few times. The lists only differ by their structure, so their reduction to
   %% a simpler format should yield the same result.
   gen_variations(Base) ->
  -    gen_variations(Base, 16).
  +    gen_variations(Base, 12).
   gen_variations(Base, N) ->
       [gen_flat_list(Base, N),
        gen_nested_list(Base, N),
  
positive.code:     gen_nasty_list_1(Base, [[Result], [gen_nasty_list_1(Head, [])]]);
  gen_nasty_list_1([Head | Base], Result) ->
      gen_nasty_list_1(Base, [[Result], [Head]]).
  
  system_mem_size() ->
      application:ensure_all_started(os_mon),
      {Tot,_Used,_}  = memsup:get_memory_data(),
      Tot.
  
negative.code:     BinBase = gen_variations([<<I:8>> || I <- lists:seq(1, 255)]),
      MixBase = gen_variations([<<12, 45, 78>>, lists:seq(1, 255)]),
  
      Variations = gen_variations([IntBase, BinBase, MixBase], 16),
      equivalence_test(fun erlang:iolist_to_iovec/1, Variations).
  
  iolist_to_iovec_idempotence(Config) when is_list(Config) ->
  