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铁路通信信号工程技术 ›› 2024, Vol. 21 ›› Issue (11): 41-45.DOI: 10.3969/j.issn.1673-4440.2024.11.007

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计算机联锁形式化验证典型反例分析

刘丽娟,陈 虹,陈耀华   

  1. 卡斯柯信号有限公司,北京 100070
  • 收稿日期:2023-05-15 修回日期:2024-09-19 出版日期:2024-11-25 发布日期:2024-11-25
  • 作者简介:刘丽娟(1984—),女,高级工程师,硕士,主要研究方向:计算机联锁及其形式化验证,邮箱:liulijuan2015163@163.com。
  • 基金资助:
    卡斯柯信号有限公司科研课题项目(RB.1X123015)

Analysis of Typical Counterexamples for Formal Verification of Computer Based Interlocking

Liu Lijuan,  Chen Hong,  Chen Yaohua   

  1. CASCO Signal Ltd., Beijing    100070, China
  • Received:2023-05-15 Revised:2024-09-19 Online:2024-11-25 Published:2024-11-25

摘要: 形式化验证是确保计算机联锁系统满足特定安全需求的有效且重要的手段。由于形式化方法的特殊性,要求对于系统模型和安全需求模型的描述完全准确,否则均会导致验证不通过。根据计算机联锁形式化验证的实际经验,总结在安全需求模型建立过程中由于模型建立不完善导致验证失败的典型场景,为形式化验证的实践提供参考。

关键词: 形式化验证, 计算机联锁, 安全需求, 反例

Abstract: Formal verification is an effective and important means to ensure that the computer based interlocking system can meet specific safety requirements. Due to the particularity of the formal methods, the descriptions of the system model and the safety requirement model need to be completely accurate, failing which the verification will not be passed. Based on the practical experience in the formal verification of the computer based interlocking system, this paper summarizes the typical scenarios of failing to pass the validation when establishing the safety requirement model due to imperfect model establishment, which provides practical reference for formal verification.

Key words: formal verification, computer based interlocking, safety requirement, counterexample

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