Research Article
Verifying the Safety of Aviation Software Based on Extended Colored Petri Net
Table 1
The initial information of component (place).
| Place | Component | Safety Level | Color of Token |
| P1 | Navigation Interface | A | red | P3 | Safe Point Determinator | C | blue | P9 | Navigation Database Interface | D | green | P11 | Heading And Speed Interface | B | orange |
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