Will cyber security be around forever?

As time goes on, won't computers be able to automatically test for vulnerabilities to the point where they will not be prevalent any more?

What I'm essentially asking is will information security be a growing field forever or will it dwindle and die because computers could find all the vulnerabilities a program has and report them to be fixed?

An example in the field of cryptography would be the one time pad. It's not entirely practical, but still cannot be cracked. Could computer programs eventually get this level of security?

Theorem proving seems promising, but I do not want to become involved in cyber security, possibly as a career, if i would be out of a job in the future.