--- a/tests/test-ancestor.py.out	Thu Sep 06 22:12:21 2018 +0900
+++ b/tests/test-ancestor.py.out	Thu Sep 06 17:00:28 2018 -0400
@@ -3,16 +3,16 @@
 iteration:  []
 % lazy ancestor set for [11, 13], stoprev = 0, inclusive = False
 membership: [7, 8, 3, 4, 1, 0]
-iteration:  [3, 7, 8, 1, 4, 0, 2]
+iteration:  [8, 7, 4, 3, 2, 1, 0]
 % lazy ancestor set for [1, 3], stoprev = 0, inclusive = False
 membership: [1, 0]
-iteration:  [0, 1]
+iteration:  [1, 0]
 % lazy ancestor set for [11, 13], stoprev = 0, inclusive = True
 membership: [11, 13, 7, 8, 3, 4, 1, 0]
-iteration:  [11, 13, 3, 7, 8, 1, 4, 0, 2]
+iteration:  [11, 13, 8, 7, 4, 3, 2, 1, 0]
 % lazy ancestor set for [11, 13], stoprev = 6, inclusive = False
 membership: [7, 8]
-iteration:  [7, 8]
+iteration:  [8, 7]
 % lazy ancestor set for [11, 13], stoprev = 6, inclusive = True
 membership: [11, 13, 7, 8]
-iteration:  [11, 13, 7, 8]
+iteration:  [11, 13, 8, 7]