Processing command (at Snapshots9.v0.dfy(2,11)) assert ok#0;
  >>> DoNothingToAssert
Snapshots9.v0.dfy(4,7): Error BP5003: A postcondition might not hold on this return path.
Snapshots9.v0.dfy(2,10): Related location: This is the postcondition that might not hold.
Execution trace:
    (0,0): anon0
    (0,0): anon3_Then
Processing command (at Snapshots9.v0.dfy(12,11)) assert ok#0;
  >>> DoNothingToAssert
Snapshots9.v0.dfy(13,0): Error BP5003: A postcondition might not hold on this return path.
Snapshots9.v0.dfy(12,10): Related location: This is the postcondition that might not hold.
Execution trace:
    (0,0): anon0

Dafny program verifier finished with 0 verified, 2 errors
Processing command (at Snapshots9.v1.dfy(6,11)) assert ok#0;
  >>> RecycleError
Snapshots9.v1.dfy(8,7): Error BP5003: A postcondition might not hold on this return path.
Snapshots9.v1.dfy(6,10): Related location: This is the postcondition that might not hold.
Execution trace:
    (0,0): anon0
    (0,0): anon3_Then
Processing command (at Snapshots9.v1.dfy(19,11)) assert ok#0;
  >>> RecycleError
Snapshots9.v1.dfy(21,0): Error BP5003: A postcondition might not hold on this return path.
Snapshots9.v1.dfy(19,10): Related location: This is the postcondition that might not hold.
Execution trace:
    (0,0): anon0

Dafny program verifier finished with 0 verified, 2 errors
