wf-checks-use-the-original-quantifier.dfy(26,11): Info: Selected triggers: {f(n)}
 Rejected triggers: {P(f(n))} (more specific than {f(n)})
wf-checks-use-the-original-quantifier.dfy(27,11): Info: Selected triggers:
   {c'.x, c.x}, {c'.x, c in s}, {c.x, c' in s}, {c' in s, c in s}

Dafny program verifier finished with 1 verified, 0 errors
