Add static-python spec verifying core Raft consensus invariants - #21
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…Lean Transpile-and-verify spec of the safety-critical Raft decision logic using the static-python subset (CHECKER.pre/post/invariant, @lemma/@by). Proofs checked by py2many --lean + lake build (exit 0 == all pre/post/invariants/lemmas proved): - ConsensusState class invariant (non-negative term/commit/last-log, commitIndex <= lastLogIndex) re-discharged by omega on every mutation - Election restriction (Voter.on_vote_request): is_up_to_date / grant_vote - Quorum intersection: general omega lemmas quorums_overlap and strict_majority_exceeds_half - Log Matching guard (Follower.on_append_entries): log_matching_ok / logs_match - Commit-advance rule (Leader.on_response_received): can_commit / commit_advance_rule - clamp_commit (Follower._update_commit_index) - 6 concrete native_decide behavioral lemmas Adds static/README.md with reproduction steps and gotchas.
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Related: py2many/py2many#825
Transpile-and-verify spec of the safety-critical Raft decision logic using the static-python subset (CHECKER.pre/post/invariant, @lemma/@by). Proofs checked by py2many --lean + lake build (exit 0 == all pre/post/invariants/lemmas proved):
Adds docs/theorem_prover.md with reproduction steps and gotchas.