diff --git a/analyzer.ml b/analyzer.ml
index 8249800..b31255f 100644
--- a/analyzer.ml
+++ b/analyzer.ml
@@ -7,15 +7,8 @@
   Ecole normale supérieure, Paris, France / CNRS / INRIA
 *)
 
-(*
-  Simple driver: parses the file given as argument and prints it back.
-
-  You should modify this file to call your functions instead!
-*)
-
 
 open Iterator 
-open Cfg
 
 (* parse filename *)
 let doit filename = begin
@@ -24,9 +17,11 @@ let doit filename = begin
   if !Options.verbose then
     Format.printf "%a" Cfg_printer.print_cfg cfg;
   Cfg_printer.output_dot !Options.cfg_out cfg;
-  let fa = ConstIterator.iterate cfg in
-  let fb = SignIterator.iterate cfg in 
-  Format.printf "@[<v 0>Failed asserts :@ %a@]" pp_asserts (ArcSet.inter fa fb) end
+  let f = match !Options.domain with
+	| "signs" -> SignIterator.iterate cfg
+	| "constants" -> ConstIterator.iterate cfg
+	| _ -> ConstIterator.iterate cfg in
+  Format.printf "@[<v 0>Failed asserts :@ %a@]" pp_asserts f  end
 
 
 (* parses arguments to get filename *)