sots-re/findings/subsystems
alex 4f805e381a L1: CDiff crosses at frame 50, and the AI client seed is fresh in every process
Two results from the same VM session, both of which needed a workload the
corpus cannot supply.

CDiff, played forward. ref-turn2 loaded and 49 End Turns driven through the UI
helper to frame 51, with the entry hook emitting one record per turn:

  50 calls, frames 2..51, EXACTLY TWO STORES
    frame  2  -1 -> 0
    frame 50   0 -> 1     <- the modelled tier transition, at the modelled frame
  and 47 turns between them on which the writer ran and wrote NOTHING

predict_path was computed at entry from the transcribed threshold table on all
fifty turns and agreed with the cdiff region on every one. Frame >= 100 is still
a code read and is not claimed as a measurement.

The AI seed probe (asked for by the coordinator, ranked above CDiff). Hooks on
Mars::RNG::Seed and StrategyApp::RunAI, two launches from turn1-state, load
only. Every AI client seed differs between processes -- net 32, 496 and 512 all
move -- while the record structure is identical and one Seed call with seed=0
produces a byte-identical state in both runs.

So the turn1-state -> turn2 nondeterminism is a SEED effect, not the ordering
effect predicted, and the 'one of three varies' observation is explained by two
of the three empires having a research pick that is robust to the stream. This
falsifies lane AI1's 'every draw from the static generator returns 0', which
that lane had explicitly flagged as arithmetic rather than measurement.

Where the seed comes from is NOT established; the finding names the one hook
that would settle it and the six values it must reproduce.

VM140 left as found: the 8-file save set with its oracle bytes intact.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ARBgSooAfokKUy6wKUKEyZ
2026-09-08 18:23:19 -04:00
..
.keep.md scaffold RE campaign: board, backlog, findings template, verify tree 2026-09-07 14:40:44 -04:00
ai-client-seed-is-per-process.md L1: CDiff crosses at frame 50, and the AI client seed is fresh in every process 2026-09-08 18:23:19 -04:00
ai-order-capture.md L4: credit lane L5 as owner of the turn-1 nondeterminism; add the command-block evidence that localises it to the client 2026-09-08 18:03:28 -04:00
ai-order-emission.md AI4: what an AI turn emits, and what each command costs in ModCount 2026-09-08 16:27:58 -04:00
ai-stepping-and-passes.md findings: lane AI3 -- the AI stepping order is save player order, and pass 0 writes nothing 2026-09-08 15:29:53 -04:00
ai-task-system.md lane AI2: the AI's task selection loop, the priority table, and the order-method -> TurnCommands map 2026-09-08 14:43:41 -04:00
ai-turn-logic.md lane H: five live probes, the oracle restored, and a harness perturbation bisected to one hook 2026-09-08 13:53:36 -04:00
battle-load-profile.md battle-load: profile filed, bug parked; sampler + resume recipe kept 2026-09-07 16:43:14 -04:00
data-model.md data-model: fix example section path (CRAIC, caught by vfs oracle) 2026-09-07 17:41:45 -04:00
data-parsers.md verify: mars data parsers proven 100% on 1595 files; catalogs; tech-tree graph 2026-09-07 15:22:55 -04:00
determinism-oracle.md determinism qualified: oracle holds only where no AI must choose; Rung B = command-stream replay, Rung C = behavioural AI; canonical pair now turn2->turn3 2026-09-08 18:02:58 -04:00
eventlive-verification.md lane V: live verification of the event-posting model against an advance prediction 2026-09-08 05:59:22 -04:00
events.md lane EV: what a turn actually posts, and two corrections to events.md 2026-09-08 15:40:07 -04:00
formula-gaps.md lane PL: decompose the /Sim/players residual by mechanism; the bankruptcy protection factor is a float32 2026-09-08 16:36:45 -04:00
fpu-precision-sensitivity.md lane F: x87 precision sensitivity measured; STATE_CHECKSUM 3.5 closed 2026-09-08 05:07:53 -04:00
golden-trace-recapture.md lane X: x86 displacement xref scanner; pin sizeof(ObservedTech) and its append site 2026-09-08 04:44:18 -04:00
income-term.md lane C3: ComputeOutput on the turn path -- the money ComputeBudget actually sums 2026-09-08 14:50:50 -04:00
loader-prototypes.md lane S: std::string is 0x1c binary-wide; ObservedTech element fully mapped 2026-09-08 05:09:33 -04:00
money-chain-float-widths.md L5: the money chain's float widths, measured live at a boundary 2026-09-08 17:49:35 -04:00
movefleet-position-rounding.md lane M: MoveFleet position rounding closed; VM140 released; types 2-5 still uncovered 2026-09-08 03:51:39 -04:00
multiplayer-gamespy.md board: lane P2 nav classifier; type 2 is the Liir drive, a naming error not a gap 2026-09-08 12:45:27 -04:00
multiplayer-tier0-verified.md lane W2: VM housekeeping notes for the multiplayer recipe (SOTSUI2 left registered, SOTSB staged not registered, -ExecutionPolicy Bypass gotcha) 2026-09-08 15:26:42 -04:00
nvo-tshn-visible-owner.md board: lane L5 - reference pair non-deterministic; interest literals verified with a failing control; verified column held at 0 on principle 2026-09-08 17:55:47 -04:00
observedtech-append.md lane S: std::string is 0x1c binary-wide; ObservedTech element fully mapped 2026-09-08 05:09:33 -04:00
output-term.md lane C3: ComputeOutput on the turn path -- the money ComputeBudget actually sums 2026-09-08 14:50:50 -04:00
output-turn-path.md lane G3: civilian growth read and measured; out[6] is not a repair number 2026-09-08 15:53:08 -04:00
path-solver.md lane P2: the path solver read from the instruction stream, and OrderFleetMove's three failure bits 2026-09-08 12:43:34 -04:00
players-residual.md lane PL: decompose the /Sim/players residual by mechanism; the bankruptcy protection factor is a float32 2026-09-08 16:36:45 -04:00
population-growth.md lane G3: civilian growth read and measured; out[6] is not a repair number 2026-09-08 15:53:08 -04:00
rcex-explained.md lane W2: multiplayer Tier 0 played end to end with no server; ModCount/Frame/Status watchpoints; rcex explained 2026-09-08 15:23:52 -04:00
running-the-game.md verified: real saves parse; ServerPlayer/StarFleet/StarShip confirmed, ServerSystem conditional gaps listed; game-run recipe 2026-09-07 16:09:28 -04:00
setresearched-cascade.md lane U: the unlock cascade, implemented and live-verified 2026-09-08 06:57:37 -04:00
ship-construction.md findings: ship construction -- the build queue read byte for byte, and the missing destroyer is the AI's 2026-09-08 14:54:03 -04:00
snlv-measured.md board: lane L5 - reference pair non-deterministic; interest literals verified with a failing control; verified column held at 0 on principle 2026-09-08 17:55:47 -04:00
strategic-turn-internals.md lane T2: the treaty-turn stamp, and Player.Status's real writer 2026-09-08 14:52:44 -04:00
strings-and-config.md strings/config: battle-load smoking gun (affinity), lockstep sim, net map, Mods override 2026-09-07 14:58:36 -04:00
system-visibility-prediction.md lane E3: the prediction's outcome, leaf for leaf 2026-09-08 13:39:30 -04:00
system-visibility-record.md W3: NVO.TShn's writer trapped live, its gate named, and 158/158 on the corpus 2026-09-08 16:41:09 -04:00
tech-effects.md b2 static findings: tech effects corrections, full g_TechIdNames dump; contract 176->211 2026-09-08 00:01:04 -04:00
treaty-turn-stamp.md lane T2: re-measure H02 on main 2fd0852 (C3 + B6 merged) -- same +26 / +14 / +12x3, 0 regressed, so the phase is orthogonal to both 2026-09-08 15:04:36 -04:00
turn1-to-turn2-nondeterminism.md L5: the money chain's float widths, measured live at a boundary 2026-09-08 17:49:35 -04:00
ui-screen-map.md board: lane P2 nav classifier; type 2 is the Liir drive, a naming error not a gap 2026-09-08 12:45:27 -04:00
unlock-cascade.md lane K: StrategyServer::OnAllCombatDone_Tail mapped, 36 phases from the instruction stream 2026-09-08 08:47:08 -04:00