git-issue-4035.dfy(14,4): Error: a postcondition could not be proved on this return path
git-issue-4035.dfy(12,12): Related location: this is the postcondition that could not be proved
git-issue-4035.dfy(31,4): Error: a postcondition could not be proved on this return path
git-issue-4035.dfy(29,12): Related location: this is the postcondition that could not be proved
git-issue-4035.dfy(53,4): Error: a postcondition could not be proved on this return path
git-issue-4035.dfy(51,12): Related location: this is the postcondition that could not be proved
git-issue-4035.dfy(75,4): Error: a postcondition could not be proved on this return path
git-issue-4035.dfy(73,12): Related location: this is the postcondition that could not be proved

Dafny program verifier finished with 2 verified, 4 errors
