Researchers from University of Tsukuba have presented counterexamples to assumed key properties of Asynchronous Distributed OPTimization (ADOPT) and its successor algorithms. ADOPT is a well-known algorithm for solving distributed constraint optimization problems.Researchers from University of Tsukuba have presented counterexamples to assumed key properties of Asynchronous Distributed OPTimization (ADOPT) and its successor algorithms. ADOPT is a well-known algorithm for solving distributed constraint optimization problems.Computer Sciences[#item_full_content]