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Claim ยท cairn 0.5.2
cairn^1110 A refusal rolls back in its step
An invariant of cairn 0.5.2.
- Id
cairn^1110- Kind
- invariant
- Reads as
- proved
- Version
- 0.5.2
What it says
When a key's write in flight is refused, the key shows the server's last confirmed value in that step, that value is unchanged, and nothing is outstanding for the key.
Evidence
| proved | init | Cairn.Optimistic.Claims.refusalRollsBack.init |
| proved | step | Cairn.Optimistic.Claims.refusalRollsBack.step |
| proved | receive | Cairn.Optimistic.Claims.refusalRollsBack.receive |
| proved | reachable | Cairn.Optimistic.Claims.refusalRollsBack.reachable |
| proved | reachableAll | Cairn.Optimistic.Claims.refusalRollsBack.reachableAll |
| fuzzed | Not shown yet: the claim-driven fuzzer held it in every random sequence (docs/fuzz.md). A CI step will publish it (#95). | |
| tested | Not shown yet: the running app matched the model at every step that exercised it (docs/conformance.md). A CI step will publish it (#95). | |
Where it's defined
- Declaration
Cairn.Optimistic.Claims.refusalRollsBack- Module
Cairn.Optimistic.Claims- Source
lean/Cairn/Optimistic/Claims.lean:199atv0.5.2- Machine
Cairn.Optimistic.Claims.machine- Statement
Cairn.Optimistic.Claims.refusalRollsBack.holds- Statement hash
9a69b0ce407e4a6c
Ledger
cairn^1110 is active in this version's claims.lock, statement 9a69b0ce407e4a6c. An id never moves or changes meaning.