The growing demand for high quality, safety, and security of software systems can only be met by rigorous application of formal methods during software design. Tools for formal methods in general, however, do not provide a sufficient level of automatic processing. This book methodically investigates the potential of first-order logic automated theorem provers for applications in software engineering. Illustrated by complete case studies on verification of communication and security protocols and logic-based component reuse, the book characterizes proof tasks to allow an assessment of the provers capabilities. Necessary techniques and extensions, e.g., for handling inductive and modal proof tasks, or for controlling the prover, are covered in detail. The book demonstrates that state-of-the-art automated theorem provers are capable of automatically handling important tasks during the development of high-quality software and it provides many helpful techniques for increasing practical usability of the automated theorem prover for successful applications.