Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland. arybarczyk@cs.put.poznan.pl.|Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland. nszostak@cs.put.poznan.pl.|Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland. mantczak@cs.put.poznan.pl.|Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland. tzok@cs.put.poznan.pl.|Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704, Poznan, Poland. mariusz.popenda@ibch.poznan.pl.|Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704, Poznan, Poland. ryszard.adamiak@ibch.poznan.pl.|Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland. jblazewicz@cs.put.poznan.pl.|Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965, Poznan, Poland. mszachniuk@cs.put.poznan.pl.