# HG changeset patch
# User blanchet
# Date 1284468473 -7200
# Node ID 1c4e38d635e18103735ad0bbe5c112a54f19634b
# Parent  ee65900bfced7c26dbaecee5d00a5121cced72b1
added a timeout around "try" call in Mirabelle

diff -r ee65900bfced -r 1c4e38d635e1 src/HOL/Mirabelle/Tools/mirabelle_sledgehammer.ML
--- a/src/HOL/Mirabelle/Tools/mirabelle_sledgehammer.ML	Tue Sep 14 14:22:49 2010 +0200
+++ b/src/HOL/Mirabelle/Tools/mirabelle_sledgehammer.ML	Tue Sep 14 14:47:53 2010 +0200
@@ -492,7 +492,8 @@
     |> snd
   end
 
-val try_timeout = Time.fromSeconds 30
+val try_inner_timeout = Time.fromSeconds 5
+val try_outer_timeout = Time.fromSeconds 30
 
 fun sledgehammer_action args id (st as {pre, name, ...}: Mirabelle.run_args) =
   let val goal = Thm.major_prem_of (#goal (Proof.goal pre)) in
@@ -503,9 +504,9 @@
         Unsynchronized.ref (NONE : ((string * locality) * thm list) list option)
       val minimize = AList.defined (op =) args minimizeK
       val metis_ft = AList.defined (op =) args metis_ftK
-
-      val trivial = Try.invoke_try (SOME try_timeout) pre
-  
+      val trivial = TimeLimit.timeLimit try_outer_timeout
+                                   (Try.invoke_try (SOME try_inner_timeout)) pre
+                    handle TimeLimit.TimeOut => false
       fun apply_metis m1 m2 =
         if metis_ft
         then