Trace based reachability verification for statecharts

Kumar Madhukar, Ravindra Metta, U. Shrotri, R. Venkatesh
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Abstract

Statecharts are widely used to model the behavior of reactive systems. While this visual formalism makes modeling easier, the state of the art in verification of statechart specifications is far from satisfactory due to the state explosion problem. We present History ion, a trace-based verification technique to address this problem. Given a set of traces in a statechart model, the model is abstracted to contain at most three states per statechart: current, history and future. A path to a desired state in the abstract model is a sketch of a potential path to that state in the original model. We follow an incremental concretization procedure to extend the sketch to a complete path in the original model. This paper presents our technique. Our experiments suggest that the technique scales to large industry models.
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基于跟踪的状态图可达性验证
状态图被广泛用于模拟反应系统的行为。虽然这种可视化的形式化使建模更容易,但由于状态爆炸问题,状态图规范验证的技术水平远不能令人满意。我们提出了History - ion,一种基于跟踪的验证技术来解决这个问题。给定状态图模型中的一组轨迹,该模型被抽象为每个状态图最多包含三个状态:当前状态、历史状态和未来状态。在抽象模型中通往期望状态的路径是原始模型中通往该状态的潜在路径的草图。我们遵循增量具体化过程,将草图扩展到原始模型中的完整路径。本文介绍了我们的技术。我们的实验表明,该技术适用于大型工业模型。
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