This book discusses the most important techniques in improving the truth of the software, including the truth with the construction (repair top-down), proving the program, static and dynamic analysis, execution-based analysis (testing and debugging). Three major software verification techniques are discussed: Semantic program synthesis and analysis, static program analysis and dynamic program analysis. Discussions involving the direct synthesis and / or indirect specification, interpreting the latest high-level testing and implementing the specification. Problems included in the text and one or more difficult exercises appear at the end of each chapter.