Warning: this way of using the CLI is deprecated. Use 'dafny --help' to see help for the new Dafny CLI format
Superposition.legacy.dfy(38,9): Warning: the ... refinement feature in statements is deprecated

Verifying M0.C.M (correctness) ...
  [4 proof obligations]  verified

Verifying M0.C.Q (well-formedness) ...
  [3 proof obligations]  error
Superposition.legacy.dfy(20,20): Error: a postcondition could not be proved on this return path
Superposition.legacy.dfy(21,25): Related location: this is the postcondition that could not be proved

Verifying M0.C.R (well-formedness) ...
  [3 proof obligations]  error
Superposition.legacy.dfy(26,20): Error: a postcondition could not be proved on this return path
Superposition.legacy.dfy(27,25): Related location: this is the postcondition that could not be proved

Verifying M1.C.M (correctness) ...
  [1 proof obligation]  verified

Dafny program verifier finished with 2 verified, 2 errors
