Worked on the runtimeverification/llvm-backend repository to improve the correctness and stability of the proof trace writer. Focused on resolving a bug where callback invocation did not properly account for event arity, leading to incorrect rewrite events. Introduced a pending rewrite callback flag and conditional logic to ensure that side_condition_event_callback is triggered only when arity is non-null, while rewrite_event_callback is used otherwise. This C++ bug fix enhanced the reliability of proof traces and aligned with the team’s emphasis on maintainability. No new user-facing features were delivered, with efforts concentrated on backend stability and clear, maintainable software development practices.