Claim ยท yap 0.1.0
yap^314 Every recording ends
An invariant of yap 0.1.0.
- Id
yap^314- Kind
- invariant
- Reads as
- proved
- Version
- 0.1.0
What it says
A recording is either held down or hands free with its deadline at most ten minutes away; so once the key's release is heard and the clock reads ten minutes on, there is no recording. A release that comes while the microphone is starting waits for the start; if the start is never reported, the recording is given up ten minutes after that release (the original would wait forever: see docs/yap-parity.md). A recording held down has no limit, as in Swift Yap (`step_recInv`, `keyUp_tick_none`, `app_recording_ends`).
Evidence
| proved | init | Yap.recordingEnds.init |
| proved | step | Yap.recordingEnds.step |
| proved | receive | Yap.recordingEnds.receive |
| proved | reachable | Yap.recordingEnds.reachable |
| proved | reachableAll | Yap.recordingEnds.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
Yap.recordingEnds- Module
Yap- Source
lean/Yap.lean:296atv0.1.0- Machine
Yap.machine- Statement
Yap.recordingEnds.holds- Statement hash
255762b84ab437f9
Ledger
yap^314 is active in this version's claims.lock, statement 255762b84ab437f9. An id never moves or changes meaning.