Upamanyu Sharma focused on strengthening the verification logic for finite-set proofs in the mit-pdos/perennial repository. During this period, he addressed a critical correctness issue by updating the iris and stdpp submodules and systematically replacing the nclose_infinite construct with nclose_not_finite across relevant verification files. Working primarily in Coq and applying formal verification and proof engineering skills, he ensured that proofs concerning set finiteness remained sound and robust. This targeted fix reduced the risk of unsound proofs and improved the stability of the verification workflow, laying a foundation for more rigorous formal properties and ongoing maintenance of the codebase.