Research on rigorous verification techniques formal specification and design

我们已经进行了深入的研究，探索严格的技术验证正式规格说明和设计的软件系统，并取得了一些重要成果。首先，我们结合形式化验证和故障树分析技术，建立了严格的评审方法。通过这种方法，证明义务的各种属性的规格自动从规格，然后自动生成的审查计划，并表示图形。通过查看这个图形表示中的任务，我们可以检查规范是否有错误。其次，我们已经开发了一种有效的测试方法来验证和确认正式规格说明，包括显式和隐式规格说明（例如，结合程序测试技术和形式化证明方法，通过这种方法，形式规格说明可以在实现之前进行验证和确认。最后，我们建立了一个原型的软件工具，以支持规格测试，并进行了案例研究，以评估我们的测试方法的有效性。

We have conducted intensive research to explore rigorous techniques for verifying formal specifications and designs of software systems, and achieved several important results. Firstly, we have combined formal verification and the fault tree analysis technique to establish a rigorous reviews method. By this method, proof obligations for various properties of a specification are automatically derived from the specification, and then a review plan is automatically generated and represented graphically. By reviewing the tasks in this graphical representation, we can check whether the specification has faults or not. Secondly, we have developed an effective testing method for verifying and validating formal specifications, including both explicit and implicit specifications (e.g., with pre and post-conditions), by integrating program testing technique and formal proof approach. By this method formal specifications can be verified and validated before they are implemented. Finally, we have built a prototype of software tool to support specification testing and conducted a case study to evaluate the effectiveness of our testing method.