This book constitutes the refereed proceedings of the 21st Brazilian Symposium on Formal
Methods SBMF 2018 which took place in Salvador Brazil in November 2018. The 16 regular
papers presented in this book were carefully reviewed and selected from 30 submissions. The
papers are organized in topical sections such as: techniques and methodologies specification
and modeling languages theoretical foundations verification and validation experience
reports regarding teaching formal methods and applications.Chapter TeSSLa: Temporal
Stream-Based Specification Language is available open access under a Creative Commons
Attribution 4.0 International License via link.springer.com.
