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