From b8fe503e7bf2a679d8b786bbaa268f2b20bce6df Mon Sep 17 00:00:00 2001
From: Andrea Asperti <andrea.asperti@unibo.it>
Date: Mon, 19 Jun 2006 13:01:52 +0000
Subject: [PATCH] Utils.compare_terms instead of compare_weights fold_right ->
 fold_right

---
 .../tactics/paramodulation/indexing.ml        | 24 +++++++++++--------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/helm/software/components/tactics/paramodulation/indexing.ml b/helm/software/components/tactics/paramodulation/indexing.ml
index 7aafcbcd6..e7166324d 100644
--- a/helm/software/components/tactics/paramodulation/indexing.ml
+++ b/helm/software/components/tactics/paramodulation/indexing.ml
@@ -798,8 +798,8 @@ let rec betaexpand_term
 
     | C.Appl l ->
         let l', lifted_l =
-          List.fold_right
-            (fun arg (res, lifted_tl) ->
+          List.fold_left
+            (fun (res, lifted_tl) arg ->
                let arg_res, lifted_arg =
                  betaexpand_term metasenv context ugraph table lift_amount arg
                in
@@ -815,7 +815,7 @@ let rec betaexpand_term
                         lifted_arg::r, s, m, ug, eq_found)
                      res),
                 lifted_arg::lifted_tl)
-            ) l ([], [])
+            ) ([], []) (List.rev l)
         in
         (List.map
            (fun (l, s, m, ug, eq_found) -> (C.Appl l, s, m, ug, eq_found)) l',
@@ -1050,21 +1050,25 @@ let build_newgoal context goal posu rule expansion =
 *)
 let superposition_left (metasenv, context, ugraph) table goal = 
   let proof,menv,eq,ty,l,r = open_goal goal in
-  let c = 
-    Utils.compare_weights ~normalize:true
-      (Utils.weight_of_term l) (Utils.weight_of_term r)
-  in
-  
+  let c = !Utils.compare_terms l r in
   if c = Utils.Incomparable then
+    begin
     let expansionsl, _ = betaexpand_term menv context ugraph table 0 l in
     let expansionsr, _ = betaexpand_term menv context ugraph table 0 r in
+    (* prerr_endline "incomparable"; 
+    prerr_endline (string_of_int (List.length expansionsl));
+    prerr_endline (string_of_int (List.length expansionsr));
+    *)
     List.map (build_newgoal context goal Utils.Right Equality.SuperpositionLeft) expansionsl
     @
     List.map (build_newgoal context goal Utils.Left Equality.SuperpositionLeft) expansionsr
-
+    end
   else
     let big,small,possmall = 
-      match c with Utils.Gt -> l,r,Utils.Right | _ -> r,l,Utils.Left
+      match c with 
+        Utils.Gt -> (* prerr_endline "GT"; *) l,r,Utils.Right 
+      | Utils.Lt -> (* prerr_endline "LT"; *) r,l,Utils.Left
+      | _ -> assert false
     in
     let expansions, _ = betaexpand_term menv context ugraph table 0 big in
     List.map (build_newgoal context goal possmall Equality.SuperpositionLeft) expansions
-- 
2.39.2