.

Route.tla

@@ -143,7 +143,7 @@ RECURSIVE SeqDecreasing(_)
 SeqDecreasing(S) ==
         CASE S = << >>  -> TRUE
           [] Len(S) = 1 -> TRUE
-          [] OTHER      -> (S[2] =< S[1])  /\  SeqDecreasing(Tail(S))
+          [] OTHER      -> (S[2] < S[1])  /\  SeqDecreasing(Tail(S))
 
 \* SeqSet converts sequence S to set of its values.
 SeqSet(S) == {S[x]: x \in DOMAIN S}