anchor.diff:  
   suite() ->
       [
  -     {timetrap, {seconds, 60}}
  +     {timetrap, {seconds, 25}}
       ].
   
   init_per_suite(Config) ->
  
positive.code:     ?equals(Size, Inner + Leafs).
      
  tester_size(_) ->
    tester:test(?MODULE, prop_size, 3, 10, [{threads, 1}]).
  
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  
negative.code: -spec prop_tree_hash(intervals:key(), intervals:key(), 1..100) -> true.
  prop_tree_hash(L, L, _) -> true;
  prop_tree_hash(L, R, ToAdd) ->
      I = intervals:new('[', L, R, ']'),
      DB = db_generator:get_db(I, ToAdd, uniform),
      
  