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Record 9bda67c8680f4891b1b8221f0e6465c9

FAIL

Verdict and provenance first; raw prompt/response/reasoning below, collapsed.

✕FAILanswered "gym" · model Nemotron 3 Nano 30B

finish_reason: stop · tokens in/out: 336/1211 · cost: $0.000259 · latency: 13620.8 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1;adversarial=1;traps=final_true_state,last_mentioned_location,last_witnessed_by_anyone,most_frequent_location,query_agent_own_last_move;foil_score=4.7143

trap kind(s) this world was seeded for: final_true_statelast_mentioned_locationlast_witnessed_by_anyonemost_frequent_locationquery_agent_own_last_move

lineage: 9bda67c8

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Why did it fail? Nemotron 3 Ultra · live on Nebius Token Factory

Ultra reads the prompt, this answer, the verified correct answer and the difficulty settings, then explains the mistake. The verifier's own classification is shown next to it for comparison.

Prompt 1,097 chars · 336 tokens in
At 8:00, Opal brought the shiny basket over to the observation deck. At 8:00, Felix was nearby and saw this happen. At 8:01, she carried the shiny basket to the front office. At 8:01, he was nearby and saw this happen. At 8:02, he moved the shiny basket into the security office. At 8:03, Oscar brought the shiny basket over to the meditation room. At 8:03, Felix was nearby and saw this happen. At 8:04, he brought the shiny basket over to the gym. At 8:05, Opal carried the shiny basket to the security office. At 8:05, he was nearby and saw this happen. At 8:06, she carried the shiny basket to the meditation room. At 8:06, he was nearby and saw this happen. At 8:07, she carried the shiny basket to the gym. At 8:08, Oscar carried the bright tablet to the meditation room. At 8:09, Felix took the bright tablet and placed it in the front office. At 8:10, Opal reorganized some papers on the desk. At 8:11, she refilled a cup of coffee. At 8:12, Felix checked their email.

Where does Felix believe the shiny basket is? Answer with only the location name (or 'unknown' if they have no belief).
Response 1,211 tokens out · finish: stop
gym
Reasoning 4,735 chars
Model reasoning
We need to infer where Felix believes the shiny basket is, based on observations timeline. Let's parse events.

We have multiple agents: Opal, Felix, Oscar. The basket is "shiny basket". Also later "bright tablet". But question: "Where does Felix believe the shiny basket is?" So we need to track Felix's belief about location of shiny basket.

We have timeline with times and actions, and statements about who was nearby and saw this happen.

We need to infer what Felix knows at each point, and what he believes about location of the basket.

We need to consider that Felix sees events when he is nearby and sees them happen. He may form beliefs based on what he sees. He may also be unaware of later moves if not present.

We need to determine at the end (presumably after all events) what location Felix believes the shiny basket is in.

Let's list events with times and who is nearby and sees.

- 8:00: Opal brought the shiny basket over to the observation deck. At 8:00, Felix was nearby and saw this happen.

So at 8:00, Felix sees Opal bring shiny basket to observation deck. So he knows basket is at observation deck at that moment.

- 8:01: she carried the shiny basket to the front office. At 8:01, he was nearby and saw this happen.

So at 8:01, Felix sees Opal move basket from observation deck to front office. So he updates belief: basket now at front office.

- 8:02: he moved the shiny basket into the security office. At 8:02, he moved the shiny basket into the security office. At 8:02, he was nearby and saw this happen. Wait "he" refers to Felix? The sentence: "At 8:02, he moved the shiny basket into the security office. At 8:02, he was nearby and saw this happen." Actually "he" refers to Felix? The subject earlier is "he" maybe refers to Felix? Let's parse: At 8:02, he moved the shiny basket into the security office. At 8:02, he was nearby and saw this happen. The "he" likely refers to Felix (since earlier "Felix was nearby"). So Felix moves the basket into security office, and he sees it (obviously). So he knows basket is now in security office.

- 8:03: Oscar brought the shiny basket over to the meditation room. At 8:03, Felix was nearby and saw this happen.

So at 8:03, Oscar brings basket to meditation room. Felix sees this. So he sees basket being moved from security office? Actually earlier basket was in security office after 8:02. At 8:03, Oscar brings the shiny basket over to the meditation room. Does Felix see that? Yes, he is nearby and sees this happen. So he sees basket being moved to meditation room. So his belief updates: basket now at meditation room.

- 8:04: he brought the shiny basket over to the gym. At 8:04, he moved the shiny basket over to the gym. At 8:04, he was nearby and saw this happen.

So Felix moves basket from meditation room to gym, sees it. So now basket is at gym according to his belief.

- 8:05: Opal carried the shiny basket to the security office. At 8:05, he was nearby and saw this happen.

So at 8:05, Opal moves basket from gym to security office, and Felix sees it. So he updates belief: basket now at security office.

- 8:06: she carried the shiny basket to the meditation room. At 8:06, he was nearby and saw this happen.

So at 8:06, Opal moves basket from security office to meditation room, and Felix sees it. So belief: basket now at meditation room.

- 8:07: she carried the shiny basket to the gym. At 8:07, he was nearby and saw this happen.

So at 8:07, Opal moves basket from meditation room to gym, Felix sees it. So belief: basket now at gym.

- 8:08: Oscar carried the bright tablet to the meditation room. This is about tablet, not basket. Not relevant.

- 8:09: Felix took the bright tablet and placed it in the front office. This is about tablet, not basket.

- 8:10: Opal reorganized some papers on the desk. Not relevant.

- 8:11: she refilled a cup of coffee. Not relevant.

- 8:12: Felix checked their email. Not relevant.

Thus, by 8:12, Felix's last observation of the shiny basket was at 8:07 when Opal carried it to the gym. He saw it being moved to gym. After that, no further events involving the basket are described, and Felix is not mentioned as being nearby to see any further moves. So his belief should be that the basket is at the gym.

But we must consider that after 8:07, there is no mention of Felix being nearby to see any further moves. However, maybe later events could have moved it without his observation, but we have no info. So his belief remains that it's at gym, unless he later learns something else indirectly? He might have heard or known? Not given.

Thus answer: gym.

But need to output only location name, or 'unknown' if they have no belief. He does have a belief: gym.

Thus answer: gym.
Realized dims 7
dimvalue
context_length13.0
coreference1.0
distractors2.0
entity_state8.0
foil_divergence5.0
temporal0.0
witness_gap1.0
Latent params 6
paramvalue
chain_length8.0
coref_pressure0.0
distractor_events2.0
filler_events2.0
scramble0.0
witness_cutoff0.0