some-terms-do-not-look-like-the-triggers-they-match.dfy(12,17): Warning: Selected triggers: {s[x]} (may loop with "s[x + 1]")
 /!\ Suppressing loops would leave this expression without triggers.
some-terms-do-not-look-like-the-triggers-they-match.dfy(15,17): Warning: For expression "x in s ==> s[x + 1] > 0":
   Selected triggers: {s[x]} (may loop with "s[x + 1]")
   /!\ Suppressing loops would leave this expression without triggers.
some-terms-do-not-look-like-the-triggers-they-match.dfy(15,17): Warning: For expression "x in s ==> x + 2 !in s":
   Selected triggers: {s[x]} (may loop with "x + 2 !in s")
   /!\ Suppressing loops would leave this expression without triggers.

Dafny program verifier finished with 2 verified, 0 errors