Store in each configuration whether a subtree needs to be recomputed.

[tatoo.git] / src / ata.ml

diff --git a/src/ata.ml b/src/ata.ml
index 9fe128a..8b51a08 100644 (file)
--- a/src/ata.ml
+++ b/src/ata.ml
@@ -14,7 +14,7 @@
 (***********************************************************************)
 
 (*
-  Time-stamp: <Last modified on 2013-04-23 15:12:29 CEST by Kim Nguyen>
+  Time-stamp: <Last modified on 2013-04-24 18:10:13 CEST by Kim Nguyen>
 *)
 
 INCLUDE "utils.ml"
@@ -199,7 +199,10 @@ type config = {
   unsat : StateSet.t;
   todo : TransList.t;
   summary : node_summary;
+  (** optimization infos,
+      not taken into account during hashconsing *)
   mutable round : int;
+  mutable unstable_subtree : bool;
 }
 
 module Config = Hcons.Make(struct
@@ -240,7 +243,8 @@ let dummy_config = Config.make { sat = StateSet.empty;
                                  unsat = StateSet.empty;
                                  todo = TransList.nil;
                                  summary = dummy_summary;
-                                 round = 0
+                                 round = 0;
+                                 unstable_subtree = true;
                                }
 
 
@@ -442,7 +446,7 @@ let eval_trans auto fcs nss ps ss =
         let unsat = StateSet.union unsat (StateSet.diff removed kept) in
         (* States that were found once to be satisfiable remain so *)
         let unsat = StateSet.diff unsat sat in
-        let new_config = Config.make { sat; unsat; todo ; summary = old_summary ; round = 0 } in
+        let new_config = Config.make { old_config.Config.node with sat; unsat; todo; } in
         Cache.N4.add auto.cache4 oid fcsid nssid psid new_config;
         new_config
     in