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Trace fail

Buvna

Hello,

Im running assertions on IFV with witness check defined as trace. The trace fails and the assertion passes. What does this mean?

Thanks. 

Parents

  • Well, I would worry about it. :-)

    When you  wrote the assertion you obviously thought that the trigger was possible and that you needed to check for certain behavior when it occurred. If IFV reports that the trigger is impossible you need to figure out what that means. Why can't the trigger occur? Did you write it correctly? Is there a bug in the DUT that makes behavior you expected to be legal impossible? Why did someone give you a specification describing behavior for conditions that can never be seen?

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  • Well, I would worry about it. :-)

    When you  wrote the assertion you obviously thought that the trigger was possible and that you needed to check for certain behavior when it occurred. If IFV reports that the trigger is impossible you need to figure out what that means. Why can't the trigger occur? Did you write it correctly? Is there a bug in the DUT that makes behavior you expected to be legal impossible? Why did someone give you a specification describing behavior for conditions that can never be seen?

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