When running our software with jensor, I get a message in output "Code shd never come here".
This first happens during autoinstrumentation, and goes on during runtime.
This particular message during auto-instrumentation was inserted just to check one infrequent type runtime behavior of an application. This type of behavior occurs very rarely. Here in this case your application has same. There should not be any issue about it.
But to make sure from your side, you can do one check. Check the call trace created by Jensor manually, which represents caller-callee relation of methods. As per your knowledge of application if that caller callee grapf is accurate, then no need to worry. You can simply ignore that message.