The code interpreter is running real code against the real files in the Linux environment OP posted, it's not hallucinating tokens at this point.
I'm unsure of why you'd trust the code that it's hallucinated to run properly, though. Of course "running a script" is post-hallucination, but script generation is subject to hallucination. ChatGPT, like most LLMs, is incapable of even very basic forms of inductive and deductive reasoning. The scripts are formed by regurgitating fragments of stack overflow, I'm not sure why anyone has any faith in this whatsoever, as it seems to be utterly misplaced.