TMC-20002: Timing Paths with Removal Slack Exceeding Threshold


Violations of this rule identify timing paths with removal slack below the slack threshold parameter. Timing paths with a very large negative removal requirement complicate timing closure and may cause excessive run times. Such paths are likely invalid, and require appropriate timing constraints.


Name Default Value Description
removal_requirement_threshold_level -0.5 nS

A violation is reported for timing paths that have slack more negative than the value of this parameter.


Ensure that each timing path is valid, and apply SDC constraints to cut the path or adjust its slack. For example:

  • set_clock_groups constraint can avoid invalid clock domain crossing paths.
  • set_false_path constraint marks invalid timing paths.
  • set_multicycle_path constraint adjusts clock edges of a multi-cycle path.





Device Family

  • Intel® Stratix® 10
  • Intel® Agilex™
  • Intel® Cyclone® 10 GX
  • Intel® Arria® 10