FME 2001: Formal Methods for Increasing Software Productivity : International Symposium of Formal Methods Europe Berlin Germany March 12–16 2001 Proceedings This book constitutes the refereed proceedings of the International Symposium of Formal Methods Europe FME 2001 held in Berlin Germany in March 2001.The 32 revised full papers presented together with abstracts of three invited talks were carefully reviewed and selected from a total of 72 submissions. Focusing on increasing software productivity all current aspects in formal methods are covered. Among the application areas addressed are avionics smart cards financial engineering E commerce middleware security telecommunications etc