FA-40337 / Heap invariants / Member archive

Lazy heap pop removes only the stale prefix and selected current record · case 02

The bounded lazy pop certificate reports an incorrect suffix.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Physical lazy-heap records [priority,serial,id,version] are already sorted lexicographically by priority then serial. Live map id->[version,payload]. Skip missing or version-stale records, pop the first current record, delete its live-map id, and retain the remaining physical suffix. No unindexed priority changes are allowed.

Why this case matters

This isolates an internal heap representation or priority-structure invariant using deterministic finite records.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression certificate 2	`{"discarded": 0, "empty": false, "live_after": {}, "payload": "A", "selected": "a", "suffix": [[1, 0, "a", 0]]}`	`{"discarded": 0, "empty": false, "live_after": {}, "payload": "A", "selected": "a", "suffix": []}`	Failed

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