Our philosophy when it comes to PrintVerifier is that when in doubt DO NOT break. In other words, during the verification process if PrintVerifier detects a potential problem but is not 100% certain about the legality/seriousness of the problem, then no stop will be issued. PrintVerifier stops are very indicative of a real problem in the code being verified and need to be investigated.
PrintVerifier stop == There IS a problem
PrintVerifier stop != There MAYBE a problem