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Tech Tip: Save Steps With Automatic Witness Checks

Comments(0)Filed under: Functional Verification, Formal Analysis, ABV, IEV, formal, IFV

This is just a quick reminder that the "witness_check" define command has an option called "auto".  When set to "auto" Incisive Formal and Enterprise Verifier ("IFV" & "IEV") will run the trace as usual, but if the trace status is "Fail" or "Explored" it will initiate the running of the trigger.  This setting may result in a little longer runtimes, but it eliminates the need to manually turn on triggers separately after running traces.

Witness_check setting summary:

  • define witness_check off
  • define witness_check trace
  • define witness_check trigger (default)
  • define witness_check auto  <--  option described above

Example usage from the tools' command prompt:

Formalverifier> define witness_check auto

Happy verifying!

Team Verify


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