@techreport{TR-IC-17-10, number = {IC-17-10}, author = {Adilson Luiz Bonifacio and Arnaldo Vieira Moura}, title = {Generating complete test suites for Reactive Systems}, month = {July}, year = {2017}, institution = {Institute of Computing, University of Campinas}, note = {In English, 25 pages. \par\selectlanguage{english}\textbf{Abstract} Model based testing is a well-established approach to test reactive systems described by formal models. In this paper we look at the problem of generating complete test suite for reactive systems formally described as Input Output Labeled Transition Systems (IOLTSs). In this work we propose a new notion of conformance relation for IOLTS models based on formal languages and automata. We show that this new conformance relation is more general than the well-studied {\bf ioco} conformance relation. We then describe how to generate test suites that are sound and exhaustive for a given specification model, according to the new conformance relation. We impose no restrictions on the structure of the specification model, a distinct advantage when compared to other recent works. } }