SPIN adopts the partial order reduction strategy to reduce the number of system states that needs to be visited and stored in the state space to solve the model checking problem.
SPIN在应用过程中同样面临状态空间爆炸问题，它采用偏序归约策略来减少状态空间中需要遍历及存储的状态数目。
Every formal verification approaches have their advantages and disadvantages, the main advantage of model checking is automation, its main drawback is the state explosion problem.
各种形式化方法都有它的优缺点，模型检测的优点是完全自动化，但存在空间开销大的问题。
To check consistency of UML model, the consistency checking is converted to a problem of theorem proving.
在检验u ML模型一致性时，把一致性检验问题转化为逻辑定理证明问题。
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