Worked on the mit-pdos/perennial repository to enhance the reliability of slice reference handling in Go. Addressed a translation bug affecting references into slices by delivering a targeted fix, then reinforced the solution with a dedicated test to prevent future regressions. Applied formal verification techniques to provide a proof of correctness for the new slice-reference logic, ensuring that the changes are both safe and predictable. Maintained a clear and traceable workflow by organizing changes into focused commits, supporting easy review and rollback. This work improved the safety of persistent data structures and enabled safer refactoring within the codebase.