useless-triggers-are-removed.dfy(16,11): Info: Selected triggers: {f(x)}
 Rejected triggers:
   {h(g(f(x)))} (more specific than {g(f(x))}, {f(x)})
   {g(h(f(x)))} (more specific than {h(f(x))}, {f(x)})
   {h(f(x))} (more specific than {f(x)})
   {g(f(x))} (more specific than {f(x)})
useless-triggers-are-removed.dfy(20,11): Info: Selected triggers: {f(f(x))}
 Rejected triggers: {f(x)} (may loop with "f(f(x))")
useless-triggers-are-removed.dfy(23,11): Info: Selected triggers:
   {g(f(x)), g(y)}, {f(y), f(x)}
 Rejected triggers:
   {g(y), f(x)} (may loop with "g(f(y))", "g(f(x))")
   {g(f(x)), g(f(y))} (more specific than {g(f(x)), f(y)}, {g(f(y)), f(x)}, {f(y), f(x)})
   {g(f(x)), f(y)} (more specific than {f(y), f(x)})
   {g(f(y)), f(x)} (more specific than {f(y), f(x)})

Dafny program verifier finished with 5 verified, 0 errors