Check if the website 'http://vitruv.uni-tuebingen.de/' is currently accessible. If it is not loading, confirm its inaccessibility and specify the exact reason reported for the failure to load the page.
Attempt to navigate to 'http://vitruv.uni-tuebingen.de/' Observe the outcome of the navigation attempt. Report whether the website is accessible or not, and if not, state the specific error encountered.
The agent must attempt to navigate to 'http://vitruv.uni-tuebingen.de/'. The agent must clearly state that the website is not accessible. The agent must explicitly state that the website is unreachable due to a 'TimeoutError: page.goto: Timeout 30000ms exceeded'.