Nope. They can certainly open the safe. They just can't compel you to TESTIFY to something. The contents of your mind are sacrosanct. If they can compel you

Nope. They can certainly open the safe. They just can't compel you to TESTIFY to something. The contents of your mind are sacrosanct. If they can compel you to divulge a combination, then they can also discern that you had access to that safe by virtue of possession of the combination. Not allowed by our laws.