anchor.diff:  	ok;
   make_actors(N) ->
   	case exec(nodes(connected),<<"actor type1(ac",(integer_to_binary(N))/binary,") create; insert into tab values (",
  -			(integer_to_binary(flatnow()))/binary,",'",(base64:encode(crypto:rand_bytes(128)))/binary,"',1);">>) of
  +			(integer_to_binary(flatnow()))/binary,",'",(base64:encode(crypto:strong_rand_bytes(128)))/binary,"',1);">>) of
   		{ok,_} ->
   			ok;
   		Err ->
  
positive.code: 	Port = 50000 + Len,
  	NI = [{name,butil:toatom("node"++butil:tolist(Len))},{rpcport,Port}],
  	Nodes1 = [NI|Nodes],
  	
  	% Grps = [[{name,butil:ds_val(name,Ndi)},{nodes,[butil:ds_val(name,Ndi)]}] || Ndi <- Nodes1],
  	% cfg({Nodes1,Grps})
  	DistName = detest:add_node(NI),
  
negative.code: 
  check_multiupdate_deadlock(Ndl) ->
  	L = ["ac1","ac2","ac3","ac4","ac5"],
  	Pids = [begin
  		% Sort L randomly
  		RL = lists:sort(fun(_,_) -> rand:uniform() > rand:uniform() end,L),
  		{Pid,_} = spawn_monitor(fun() ->
  			Ins = ["insert into tab values (",
  				  (integer_to_binary(flatnow())),",'deadlock?',1);"],
  			SQL = [["actor type1(",Actor,"); ",Ins] || Actor <- RL],
  