In eXpress, Creation Interference most frequently comes into play for signature tests whose symmetry type has been set to Signature Identifies Operation.In the sample diagram below, where the coverage for a Signature Identifies Operation test performed at OUT-1 consists of function B, the Creation Interference for this test would consist of function A (the only function that is upstream from A).
Creation Interference also comes into play for User-Initiated and Probe tests for which one or more Stimuli have been disabled. In the sample diagram below, where a Analyst-initiated test has been defined at OUT-1 and the stimulus at IN-2 is non-monitored (has been disabled for that test), function A will (by default) be included in the Creation Interference for that test (since it is upstream from B and C, yet not included in the coverage itself). (Note: on the Test Interpretation panel for User-Initiated and Probe tests, the Analyst can disable Creation Interference from Non-Monitoried Stimuli).
