X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fcic_proof_checking%2FcicReduction.ml;h=6e34360850caf0f2f5f48f85cee3c65e060833c7;hb=7f9e313fe5ae4200f080f481a6b8b795a0618093;hp=5e02fdbaaa391d00705586a0df49d61d60b79a2a;hpb=d344d41028275b6d1451dca8e40a88e33e588389;p=helm.git

diff --git a/helm/software/components/cic_proof_checking/cicReduction.ml b/helm/software/components/cic_proof_checking/cicReduction.ml
index 5e02fdbaa..6e3436085 100644
--- a/helm/software/components/cic_proof_checking/cicReduction.ml
+++ b/helm/software/components/cic_proof_checking/cicReduction.ml
@@ -869,19 +869,16 @@ prerr_endline ("%%%%%%: " ^ CicPp.ppterm term' ^ " <==> " ^ CicPp.ppterm t1);
 *)
                aux test_equality_only context t1 term' ugraph
             with  CicUtil.Subst_not_found _ -> false,ugraph)
-          (* TASSI: CONSTRAINTS *)
-        | (C.Sort (C.Type t1), C.Sort (C.Type t2)) when test_equality_only ->
-            (try
-              true,(CicUniv.add_eq t2 t1 ugraph)
-             with CicUniv.UniverseInconsistency _ -> false,ugraph)
-          (* TASSI: CONSTRAINTS *)
-        | (C.Sort (C.Type t1), C.Sort (C.Type t2)) ->
-            (try
-              true,(CicUniv.add_ge t2 t1 ugraph)
-             with CicUniv.UniverseInconsistency _ -> false,ugraph)
-          (* TASSI: CONSTRAINTS *)
-        | (C.Sort s1, C.Sort (C.Type _)) -> (not test_equality_only),ugraph
-          (* TASSI: CONSTRAINTS *)
+        | (C.Sort (C.CProp t1|C.Type t1), C.Sort (C.CProp t2|C.Type t2)) 
+          when test_equality_only ->
+            (try true,(CicUniv.add_eq t2 t1 ugraph)
+            with CicUniv.UniverseInconsistency _ -> false,ugraph)
+        | (C.Sort (C.CProp t1|C.Type t1), C.Sort (C.CProp t2|C.Type t2))
+          when not test_equality_only ->
+            (try true,(CicUniv.add_ge t2 t1 ugraph)
+            with CicUniv.UniverseInconsistency _ -> false,ugraph)
+        | (C.Sort s1, C.Sort (C.Type _))
+        | (C.Sort s1, C.Sort (C.CProp _)) -> (not test_equality_only),ugraph
         | (C.Sort s1, C.Sort s2) -> (s1 = s2),ugraph
         | (C.Prod (name1,s1,t1), C.Prod(_,s2,t2)) ->
             let b',ugraph' = aux true context s1 s2 ugraph in
@@ -909,13 +906,18 @@ prerr_endline ("%%%%%%: " ^ CicPp.ppterm term' ^ " <==> " ^ CicPp.ppterm t1);
            else
              false,ugraph
         | (C.Appl l1, C.Appl l2) ->
+           let b, ugraph = 
+             aux test_equality_only context (List.hd l1) (List.hd l2) ugraph
+           in
+           if not b then false, ugraph
+           else
            (try
              List.fold_right2
                (fun  x y (b,ugraph) -> 
                  if b then
-                   aux test_equality_only context x y ugraph
+                   aux true context x y ugraph
                  else
-                   false,ugraph) l1 l2 (true,ugraph)
+                   false,ugraph) (List.tl l1) (List.tl l2) (true,ugraph)
             with
              Invalid_argument _ -> false,ugraph
            )
@@ -978,7 +980,7 @@ prerr_endline ("%%%%%%: " ^ CicPp.ppterm term' ^ " <==> " ^ CicPp.ppterm t1);
              let b'',ugraph''=aux test_equality_only context 
                  outtype1 outtype2 ugraph in
              if b'' then 
-               let b''',ugraph'''= aux test_equality_only context 
+               let b''',ugraph'''= aux true context 
                    term1 term2 ugraph'' in
                List.fold_right2
                  (fun x y (b,ugraph) -> 
@@ -1063,7 +1065,7 @@ prerr_endline ("PREWHD: " ^ CicPp.ppterm t1 ^ " <===> " ^ CicPp.ppterm t2);
    let t2' = whd ?delta:(Some true) ?subst:(Some subst) context t2 in
     debug t1' [t2'] "POSTWHD";
 *)
-let rec convert_machines ugraph =
+let rec convert_machines test_equality_only ugraph =
  function
     [] -> true,ugraph
   | ((k1,env1,ens1,h1,s1),(k2,env2,ens2,h2,s2))::tl ->
@@ -1088,11 +1090,11 @@ let rec convert_machines ugraph =
        in
         match problems with
            None -> false,ugraph
-         | Some problems -> convert_machines ugraph problems
+         | Some problems -> convert_machines true ugraph problems
       else
        res
 in
- convert_machines ugraph
+ convert_machines test_equality_only ugraph
   [R.reduce ~delta:true ~subst context (0,[],[],t1,[]),
    R.reduce ~delta:true ~subst context (0,[],[],t2,[])]
 (*prerr_endline ("POSTWH: " ^ CicPp.ppterm t1' ^ " <===> " ^ CicPp.ppterm t2');*)