feat(verify): expand formal verification to 7 specs, add versioning, CI integration

Added 3 new TLA+ specs:
- gossip.tla — SWIM gossip membership & failure detection
- deadlock.tla — wait-for graph deadlock detection
- sharding.tla — consistent hashing shard assignment

Improved existing 4 specs:
- raft.tla: added CommittedIndexValid invariant
- twopc.tla: added CoordinatorConsistency, NoDecideWithoutConsensus,
  ParticipantStateValid; increased to MaxTxnId=3
- mvcc.tla: added CommittedMustStart, CommittedVersionsUnique
- replication.tla: added AppliedLteCurrent, SemiSyncQuorum

Infrastructure:
- VERSION file (1.0.0)
- CHANGELOG.md
- ANALYSIS.md (weak spots & improvement plan)
- run_all.sh script for batch TLC verification
- CI verify job in GitHub Actions
- Updated README with new specs and properties

Total: 7 specs, 26 invariants, 11.6M states checked, 0 errors

This commit is contained in:

dimgigov

2026-05-07 18:26:55 +03:00

parent 215df1cdf3

commit 19d0ff7366

20 changed files with 815 additions and 49 deletions

									
										formal-verification/models/mvcc.cfg
									
		+2
		
												View File
												
				@@ -14,3 +14,5 @@ INVARIANTS

				  NoDirtyReads

				  ReadOwnWrites

				  WriteWriteConflict

				  CommittedMustStart

				  CommittedVersionsUnique