Does ROLLBACK TRAN honor LOCK_TIMEOUT value? I have a following stored procedure on my system.

BEGIN TRY
  BEGIN TRAN
  SET LOCK_TIMEOUT 10000
  UPDATE tbl
  COMMIT TRAN
END TRY
BEGIN CATCH
  IF @@TRANCOUNT &gt; 0
    ROLLBACK TRAN
END CATCH


UPDATE tbl went into timeout and ROLLBACK TRAN also failed because of timeout. 

Question is: is this possible?
No, this is not possible. 

SQL Server will always finish the ROLLBACK, no matter what. Even if you cut the power to the system in the middle of the ROLLBACK, the ROLLBACK will continue after the power is returned. ROLLBACK also ignores any connection interruptions and LOCK_TIMEOUT settings. In fact, a connection interruption will start a ROLLBACK if there is an open transaction at the time of interruption.