sots-re/verify/results/compare/recap-b3-compare-t1-5.md
alex 05095e93da lane R: golden-trace recapture with guards on the live game
Five hooks recaptured, build recap-7584bad-20260908T0615Z, no source change.

- ProcessResearch: the over-budget event is now a compare divergence
  (side.events.after.v.next_id orig=4 ours=3) instead of a 609 KB save diff.
  15 calls over 5 turns, 3 diverged, RNG matched 15/15.
- ComputeBudget: 4284 compared, 0 diverged, guard quiet - but only 20 distinct
  states and 13 of 22 slots always zero.
- MoveFleet: 8 of 45 calls diverge by 1 ULP of position. B4's clean verdict was
  a one-sample verdict.
- First guarded captures for OnTechResearched (RollResearchEvent draw fired and
  matched), the colony turn and MoveFleet.
- Guards mapped SetResearched live and found an undeclared ObservedTech append.

VM140 released at the main menu, hooks=trace.
2026-09-08 03:06:43 -04:00

4 KiB

tracecmp report: recap-b3-compare5.jsonl

  • build: recap-7584bad-20260908T0615Z started: 2026-09-08T06:28:40Z inline_max: 256
  • calls: 15 compared: 15 diverged: 3 invalid records: 0 warnings: 0
  • coverage: 15 guarded call(s), 13 undeclared write(s) in 2 call(s); 0 hook(s) unstated, 0 contradicted
hook calls modes compared diverged errors
Game::TechTree::ProcessResearch 15 compare:15 15 3 0

coverage

hook verdict compared regions guards undeclared writes unmodelled
Game::TechTree::ProcessResearch partial events, node[0], node[105], node[106], node[107], node[108], +270 player, tree_header 13 in 2 call(s) 5

Game::TechTree::ProcessResearch — not checked by this run

  • (high) posts EVENT_RESEARCH_OVERBUDGET on the owner's EventStorage in the same branch that sets node.flag = 2 — the message text is composed from the tech name, so ours cannot synthesise it; it would have to be posted through the game's own event API. This is the defect that made a clean compare false: replace mode's autosave differed from the oracle by exactly this one event [region:events (EvNxID now diverges instead of passing silently)]
  • (medium) posts EVENT_TECHS_UNLOCKED for nodes that became available this turn — the trailing unlock loop makes no draw and writes no node, but it does build a names list and post an event [region:events]
  • (high) TechTree::SetResearched on completion: the turn/order stamps, the child unlock cascade, the recursive research of zero-cost children, and the owner's OnTechResearched callback — its own milestone (B2); the callback writes live player state that compare mode must not touch, and it consumes one extra RNG word [guard:player, guard:tree_header]
  • (medium) bumps the tree's completion-order counter (TechTree+0x20) — part of SetResearched; the per-node order word is compared but the counter it comes from was not a region [guard:tree_header]
  • (low) writes a completion line to the game log — log text is not simulation state
  • guard hits in compare mode: player+0x10c:3, player+0x110:3, player+0x114:3, player+0x124:3, player+0x274:3, player+0x278:3, player+0x27c:3, player+0x294:4, tree_header+0x20:1, player+0x130:3, player+0x278:1

Game::TechTree::ProcessResearch: first 3 of 3 divergent call(s)

  • call_id 0 (recap-b3-compare5.jsonl:2) side.events.after.v.next_id [exact] orig={"t":"i32","v":4} ours={"t":"i32","v":3}
  • call_id 3 (recap-b3-compare5.jsonl:5) side.events.after.v.next_id [exact] orig={"t":"i32","v":7} ours={"t":"i32","v":5} side.node[132].after.v.cost_rp [exact] orig={"t":"i32","v":10000} ours={"t":"i32","v":2147483647} side.node[132].after.v.state [exact] orig={"t":"i32","v":2} ours={"t":"i32","v":0} side.node[132].after.v.turn_available [exact] orig={"t":"i32","v":4} ours={"t":"i32","v":-1} side.node[136].after.v.cost_rp [exact] orig={"t":"i32","v":16000} ours={"t":"i32","v":2147483647} side.node[136].after.v.state [exact] orig={"t":"i32","v":2} ours={"t":"i32","v":0} side.node[136].after.v.turn_available [exact] orig={"t":"i32","v":4} ours={"t":"i32","v":-1} side.node[142].after.v.cost_rp [exact] orig={"t":"i32","v":8000} ours={"t":"i32","v":2147483647} … 4 more
  • call_id 9 (recap-b3-compare5.jsonl:11) side.events.after.v.next_id [exact] orig={"t":"i32","v":12} ours={"t":"i32","v":10} side.node[12].after.v.cost_rp [exact] orig={"t":"i32","v":35000} ours={"t":"i32","v":2147483647} side.node[12].after.v.state [exact] orig={"t":"i32","v":2} ours={"t":"i32","v":0} side.node[12].after.v.turn_available [exact] orig={"t":"i32","v":6} ours={"t":"i32","v":-1} side.node[18].after.v.cost_rp [exact] orig={"t":"i32","v":4000} ours={"t":"i32","v":2147483647} side.node[18].after.v.state [exact] orig={"t":"i32","v":2} ours={"t":"i32","v":0} side.node[18].after.v.turn_available [exact] orig={"t":"i32","v":6} ours={"t":"i32","v":-1} side.node[3].after.v.cost_rp [exact] orig={"t":"i32","v":13000} ours={"t":"i32","v":2147483647} … 4 more