Verify if the website 'http://vitruv.uni-tuebingen.de/' is currently accessible. Report whether the website loads successfully or if it is unreachable.
Attempt to navigate to 'http://vitruv.uni-tuebingen.de/'. Based on the outcome, determine if the website is accessible.
The agent attempts to navigate to 'http://vitruv.uni-tuebingen.de/'. The agent explicitly states that the website is unreachable or does not load successfully, citing timeout errors or similar network issues.