In this paper, we apply formal verification and falsification of temporal logic specifications to analyze chemical plant automation systems. We present new results, obtained by applying a recently-developed approach to handle combined invariance and reachability requirements. In addition, we develop a set of tests that can be generated automatically for a given control system, some of which have the same form as those in the existing literature, and some of which combine invariance and reachability, to which we apply the new approach mentioned previously. In both cases, we work with abstractions of the automation systems in order to apply symbolic model checking to industrial-scale problems. We demonstrate the results using a series of small illustrative examples, and also report results from an industrial case study. The methods that we apply are implemented in a pair of open-source software tools, which we describe briefly.

在本文中，我们应用形式验证和伪造的时间逻辑规范来分析化工厂自动化系统。我们介绍了通过应用最近开发的方法来处理不变性和可达性要求的组合所获得的新结果。此外，我们开发了一套可以针对给定控制系统自动生成的测试，其中一些具有与现有文献相同的形式，并且其中一些结合了不变性和可达性，因此我们采用了新方法前面提到过。在这两种情况下，我们都将自动化系统的抽象用于将符号模型检查应用于工业规模的问题。我们使用一系列小的说明性示例演示了结果，并报告了工业案例研究的结果。