With the pervasive deployment of software in dependable systems used in everyday life,society is increasingly demanding that software used in critical systems must meet minimum safety, security and reliability standards. Certification is the procedure by which an authorized person or agency assesses and verifies characteristics of a system or product in accordance with established requirements, standards, or regulations. For software, it encompasses traditional notions of verification, but also includes the evidence, tools, methods, and personnel qualifications that are needed to convince the certification authority that the system or product conforms to the relevant standard. Manufacturers of these systems need consistent and effective g...