The sentence you provided is mostly grammatically correct, but it can be improved for clarity and style. Here's a revised version of the sentence:
"After examining all the papers, the committee firmly believes that you are undoubtedly guilty of disloyalty."
Changes made:
- "Having examined" changed to "After examining" for simplicity and clarity.
- "Thinks" replaced with "firmly believes" for stronger language.
- "You have been guilty of disloyalty without any doubt" changed to "you are undoubtedly guilty of disloyalty" for better flow and conciseness.
Overall, the revised version is clearer and more straightforward in conveying the intended meaning.