X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=model.cc;h=2fa54d6e9ba1e76be577ec0625f6138ee7d1c5d4;hb=35c057636dd12235368cfb9644532c7561609624;hp=7181f86977688054159da03d0c3a7921ce23c958;hpb=b5cdd7ee16b73bbfe53040d23994351f85f83785;p=model-checker.git

diff --git a/model.cc b/model.cc
index 7181f86..2fa54d6 100644
--- a/model.cc
+++ b/model.cc
@@ -383,6 +383,10 @@ void ModelChecker::set_backtracking(ModelAction *act)
 	for(int i = low_tid; i < high_tid; i++) {
 		thread_id_t tid = int_to_id(i);
 
+		/* Make sure this thread can be enabled here. */
+		if (i >= node->get_num_threads())
+			break;
+
 		/* Don't backtrack into a point where the thread is disabled or sleeping. */
 		if (node->get_enabled_array()[i]!=THREAD_ENABLED)
 			continue;