loop-detection-is-not-too-strict.dfy(15,9): Info: Selected triggers:
   {P(y, x)}, {P(x, y)}
loop-detection-is-not-too-strict.dfy(18,9): Info: Selected triggers:
   {P(y, x)}, {P(x, y)}
loop-detection-is-not-too-strict.dfy(21,9): Warning: Selected triggers: {P(x, y)} (may loop with "P(x, y + 1)")
 /!\ Suppressing loops would leave this expression without triggers.
loop-detection-is-not-too-strict.dfy(26,9): Info: Selected triggers: {Q(x)}
loop-detection-is-not-too-strict.dfy(27,9): Info: Selected triggers: {Q(x)}
loop-detection-is-not-too-strict.dfy(28,9): Info: Selected triggers:
   {P(x, z)}, {P(x, 1)}
loop-detection-is-not-too-strict.dfy(33,9): Info: Selected triggers: {Q(x)}
loop-detection-is-not-too-strict.dfy(34,9): Info: Selected triggers: {Q(x)}
loop-detection-is-not-too-strict.dfy(36,9): Warning: Selected triggers: {Q(x)} (may loop with "Q(if z > 1 then x else 3 * z + 1)")
 /!\ Suppressing loops would leave this expression without triggers.
loop-detection-is-not-too-strict.dfy(39,9): Info: Selected triggers: {Q(x)}

Dafny program verifier finished with 4 verified, 0 errors