Include.dfy(32,7): Warning: the ... refinement feature in statements is deprecated
Include.dfy(20,11): Error: a postcondition could not be proved on this return path
Includee.dfy(17,19): Related location: this is the postcondition that could not be proved
Includee.dfy[Concrete](22,15): Error: assertion might not hold
Include.dfy(28,6): Error: a postcondition could not be proved on this return path
Includee.dfy[Concrete](20,14): Related location: this is the postcondition that could not be proved

Dafny program verifier finished with 1 verified, 3 errors
Include.dfy(32,7): Warning: the ... refinement feature in statements is deprecated
Includee.dfy(6,0): Error: a postcondition could not be proved on this return path
Includee.dfy(5,12): Related location: this is the postcondition that could not be proved
Includee.dfy(7,0): Error: out-parameter 'y', which is subject to definite-assignment rules, might be uninitialized at this return point
Includee.dfy(21,2): Error: a postcondition could not be proved on this return path
Includee.dfy(20,14): Related location: this is the postcondition that could not be proved
Includee.dfy(24,17): Error: assertion might not hold
Include.dfy(20,11): Error: a postcondition could not be proved on this return path
Includee.dfy(17,19): Related location: this is the postcondition that could not be proved
Includee.dfy[Concrete](22,15): Error: assertion might not hold
Include.dfy(28,6): Error: a postcondition could not be proved on this return path
Includee.dfy[Concrete](20,14): Related location: this is the postcondition that could not be proved

Dafny program verifier finished with 2 verified, 7 errors
