print the name not found in the env

diff --git a/helm/software/components/acic_content/termAcicContent.ml b/helm/software/components/acic_content/termAcicContent.ml
index 7a459084989eba70e47379b2976631684ee462f7..da5aa49609fab082c97661faa97e6f7a150fe8f7 100644 (file)
--- a/helm/software/components/acic_content/termAcicContent.ml
+++ b/helm/software/components/acic_content/termAcicContent.ml
@@ -309,7 +309,11 @@ let add_idrefs =
 let instantiate32 term_info idrefs env symbol args =
   let rec instantiate_arg = function
     | Ast.IdentArg (n, name) ->
-        let t = (try List.assoc name env with Not_found -> assert false) in
+        let t = 
+          try List.assoc name env 
+          with Not_found -> prerr_endline ("name not found in env: "^name);
+                            assert false
+        in
         let rec count_lambda = function
           | Ast.AttributedTerm (_, t) -> count_lambda t
           | Ast.Binder (`Lambda, _, body) -> 1 + count_lambda body