One of my Testcase failing for some seed numbers and passing for some seed numbers(out of 5 times run with random seed numbers 3 random seeds giving testpass and 2 random seeds giving testfail). want to know why its happening like this and what is the solution for this and need debug procedure.
In reply to harinathdigital@gmail.com:
This is the whole point of constrained random verification (CRV). You are trading off time writing individual tests with specific values with running more tests hoping that some random value produce a failure.
CRV only works if you have self checking testbench with a reference model or some kind of assertion. When you get a failure from a particular random test seed, you have to look at what the testbench expected versus what actually happened. Only someone with knowledge of the requirements can help you for there.