feat: formal verification suite — TLA+ specs for Raft, 2PC, MVCC, Replication

Verified with TLC model checker: - Raft: 475k states, ElectionSafety + StateMachineSafety - 2PC: 22k states, Atomicity + NoOrphanBlocks - MVCC: 177k states, NoDirtyReads + ReadOwnWrites + WriteWriteConflict - Replication: 3.6M states, MonotonicLsn + AcksRemovePending
2026-05-07 15:57:33 +03:00
parent c8633b9589
commit e73bfb450c
11 changed files with 756 additions and 0 deletions
@@ -0,0 +1,17 @@
+CONSTANTS
+  Replicas = {r1, r2, r3}
+  MaxLsn = 3
+  MaxSyncCount = 2
+
+INIT Init
+NEXT Next
+
+CHECK_DEADLOCK FALSE
+
+INVARIANTS
+  TypeOk
+  AcksRemovePending
+  PendingAreKnown
+
+PROPERTIES
+  MonotonicLsn