Rethinking of I/O-automata composition

The necessity of handling the increasing complexity of embedded systems has led to the growth of reuse-based design. At the same time, the systems must still satisfy strict requirements on reliability and correctness. This paper proposes a formal analysis of parallel composition of I/O automata. This analysis leads to identification of novel composition rules guaranteeing the correctness-by-construction, and will provide a basis for a sound compositional development of components (Intellectual Property blocks).