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diff --git a/Test/wishlist/sequences-s0-in-s.dfy b/Test/wishlist/sequences-s0-in-s.dfy
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+++ b/Test/wishlist/sequences-s0-in-s.dfy
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+// RUN: %dafny /compile:0 /autoTriggers:1 /print:"%t.print" /dprint:"%t.dprint" "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+// The following is also due to a weakness in the axiomatization: namely, it is
+// not easy to learn, using Dafny's axioms, that s[0] in s. One can of course
+// prove it, but it doesn't come for free.
+
+method InSeqTriggers(s: seq<int>, i: nat)
+  requires forall x :: x in s ==> x > 0;
+  requires |s| > 0 {
+    if * {
+      // Fails
+      assert s[0] > 0; // WISH
+    } else if * {
+      // Works
+      assert s[0] in s;
+      assert s[0] > 0;
+    }
+}
+
+method InSeqNoAutoTriggers(s: seq<int>, i: nat)
+  requires forall x {:autotriggers false} :: x in s ==> x > 0;
+  requires |s| > 0 {
+    assert s[0] > 0; // Works (Z3 matches on $Box above)
+}