FG-01-FP: 煲汤/慢炖（正常长时间开灶）

温度上升后稳定（不持续飙升），住户定期回来检查，烟雾传感器未触发

Kitchen temperature rose rapidly before the smart cook surface logged an 'on' state, and the smoke/CO alarm failed to trigger despite significant thermal activity, suggesting either unattended cooking with a sensor/logging delay or a safety device malfunction.

Explanation: The kitchen temperature sensor recorded a sharp rise from 23.00°C to 24.75°C between 19:00 and 19:10, preceding the `kitchen_cook_surface` logging an 'on' command at 19:15:30 by over 15 minutes.

Explanation: This temporal discrepancy suggests that heat was generated (either by manual activation not captured by the smart switch or by another appliance like an oven) while the user may have been distracted or absent from the immediate stove area, fitting the pattern of unattended cooking risk.

Explanation: Although the temperature peak (26.89°C) is not indicative of a fire, it confirms significant heat release near the sensor.

Explanation: Critically, the target safety device `kitchen_smoke_co_alarm` has no logs during this event, creating a blind spot where potential smoke or CO generation went undetected by the system, compounding the risk.

Kitchen temp rose sharply (23.00C -> 24.75C) between 19:00-19:10, prior to cook surface 'on' log at 19:15:30.

Peak kitchen temperature reached 26.89°C at 19:30, indicating sustained heat source.

No logs for `kitchen_smoke_co_alarm` during the heating event, indicating potential detection failure or silence.

Verify if the `kitchen_cook_surface` smart switch is properly paired and logging all state changes; consider checking physical usage logs if available.

Inspect the `kitchen_smoke_co_alarm` battery status and connectivity to ensure it is operational, as it failed to provide feedback during a high-heat event.

Review footage or other sensor data to confirm occupant presence in the kitchen during the 19:00-19:15 window to assess supervision levels.

living_room bedroom kitchen bathroom entrance

Analyze the comprehensive status report to determine the current home safety situation and identify any potential risks.

C04 shows early morning door lock activity and rising temperatures, relevant for checking security breaches or heating system issues.

C10 captures the onset of evening occupancy and alarm spikes in the living room, providing context for the later events in C11.

Normal evening routine with cooking and dishwasher usage, followed by stable ambient temperatures.

C05 shows stable morning temperatures (23-25 C) with no occupancy anomalies.

C10 shows living room occupancy starting at 18:05, consistent with returning home for dinner.

Kitchen temperature rises from ~23 C to peak of 26.89 C between 19:05 and 19:30, correlating with `kitchen_cook_surface` turning on at 19:15.

After the cook surface is turned off at 19:43, kitchen temperature steadily decreases from 26.89 C to 22.59 C by 21:00, indicating normal heat dissipation.

Dishwasher starts at 20:15 with operational state change, causing a minor temperature dip/plateau in the kitchen as expected from water cycle dynamics or venting.

No smoke/CO alarm events are present, and no lock tampering is observed.

The initial temperature spike at 19:05 (before cook surface explicitly turns on in logs at 19:15:30) suggests either a timing offset in logging or pre-heating activity not fully captured by the switch event.

Potential unattended cooking risk due to rapid temperature rise preceding explicit 'on' command, coupled with lack of safety device feedback.

In C10, kitchen temperature jumps from 23.00 C (18:45) to 23.50 C (19:00), then sharply to 24.15 C (19:05) and 24.75 C (19:10), before the `kitchen_cook_surface` OnOff event logs 'on' at 19:15:30.

This 10-minute window (19:05-19:15) shows significant heating without an explicit appliance 'on' log, suggesting the stove may have been manually activated or auto-lit earlier than the smart switch logged it, potentially leaving it unmonitored if the user was distracted.

Peak temperature reached 26.89 C at 19:30, which is high for ambient air but indicates significant thermal energy release near the sensor.

Critical gap: The target device `kitchen_smoke_co_alarm` has no logs in any chunk, meaning we cannot confirm if the system detected this potential hazard, creating a blind spot in the safety assessment.

Temperature rise could be due to oven use (not tracked by cook_surface) or residual heat from previous cycles, though less likely given the drop in C05.

26.89 C is not a fire-level temperature; it is within plausible range for a hot stovetop affecting nearby sensors.

The discrepancy might simply be a logging delay or asynchronous reporting between the physical switch and the Matter network.

Sensor data integrity issue or intermittent connectivity affecting safety monitoring reliability.

In C10, at 19:16:00, `kitchen_temp_sensor` reports `MeasuredValue = None`, immediately after the cook surface is turned on and just before the rapid temperature rise begins.

In C11, at 19:44:00, `kitchen_temp_sensor` again reports `MeasuredValue = None` shortly after the cook surface is turned off.

These gaps occur during critical thermal transitions, potentially obscuring the true rate of temperature change or peak values.

Single-point value drops can be transient network issues rather than permanent faults.

Values resume normally afterward, so it's not a stuck sensor.

The sequence in C10: Kitchen temp rising sharply (19:05-19:10) BEFORE the `kitchen_cook_surface` logs 'on' (19:15:30).

The two instances of `MeasuredValue = None` in the kitchen sensor during active cooking phases (19:16 and 19:44).

The complete absence of `kitchen_smoke_co_alarm` logs despite being a targeted safety device.

Logs for `kitchen_smoke_co_alarm` to confirm if any alarms were triggered during the heating event.

Raw telemetry for the `kitchen_cook_surface` to verify if there were intermediate states or power fluctuations between 19:05 and 19:15.

Context on whether other appliances (oven, microwave) are present and monitored, as they could explain the pre-19:15 heating.

Verify kitchen_smoke_co_alarm status in early morning chunks (C03/C04) to rule out silent faults or missed alarms.

Check C06-C09 for any water leak detector events or other safety anomalies during the day.

Clarify the '2750' raw value in C04 (07:15) - is it a transient spike or data error?

Confirm if 'kitchen_light on' at 19:15 correlates with cook surface usage patterns.

The investigator correctly identifies a potential unattended cooking risk based on temporal precedence of temperature rise vs. switch event. However, they overstate the severity by implying a 'fire-level' risk without smoke/CO evidence, creating a false-alarm medium risk.

Crucially, the target device `kitchen_smoke_co_alarm` is listed in the query anchor but has NO logs in the provided chunks (C04, C05, C10, C11). The investigator notes this absence as 'missing information' but does not explicitly check earlier chunks (like C03) where the alarm might have been triggered and cleared, or verify its operational state via diagnostics.

The 'sensor malfunction' hypothesis (A2) regarding `MeasuredValue = None` is plausible but weak; single drops are often network noise. The investigation needs to confirm if the sensor is generally healthy by checking other timeframes.

To finalize the verdict, we must determine if the alarm system is functional. If the alarm is faulty (never logs), the safety profile changes from 'potential hazard' to 'systemic failure'. If the alarm is simply offline/unlogged in this sample, we cannot confirm safety. We need C03 to see the full morning context including potential alarm triggers.

Normal Evening Routine with Unattended Cooking: The user cooked dinner in the kitchen (cook surface on), which caused a localized temperature rise. The cook surface was turned off after ~18 minutes, and temperatures subsequently normalized. No fire or safety alarm was triggered.

C10/C11: Kitchen cook surface turned ON at 19:15:30.

C10/C11: Kitchen temp sensor readings rose from ~23°C to a peak of 26.89°C by 19:30.

C11: Cook surface turned OFF at 19:43:00.

C11: Temperatures declined steadily from 26.38°C (19:45) to 22.59°C (21:00).

C11: Dishwasher started at 20:15, consistent with post-dinner cleanup.

Living room occupancy remained constant (Occupied) throughout the evening, suggesting someone was home but not necessarily in the kitchen during the cooking event.

The absence of a smoke/CO alarm trigger is fortunate but doesn't rule out dangerous conditions if sensors are delayed or faulty.

Temperature spikes were moderate; however, relying on ambient air temperature to detect cooking fires is less sensitive than direct flame/smoke detection.

Normal Security Behavior: The front door lock operations correspond to a normal morning departure routine. Lock state flips (unlock then lock) represent the user leaving the house and engaging the auto-lock.

C04: At 07:27:12, manual unlock event occurred.

C04: Door contact opened (false->true transition implies closing? Wait, false=unlocked/open? Let's check C04 logic). In C04: Contact=false (07:27:14) then true (07:27:21). Usually boolean contact=true=closed. If false=open, then door opened/closed.

C04: Auto-lock event at 07:27:22 immediately following manual unlock/close sequence.

C04: Bedroom/Living room occupancy transitions to 'unoccupied' shortly after (07:30-08:00), consistent with residents leaving for the day.

No other lock activity occurred outside business hours.

If the door contact logic is inverted or misinterpreted, an 'auto-lock' without proper closure could be a failure.

Manual unlock followed immediately by auto-lock suggests the user might have struggled with the lock or it has a short auto-lock timer, which is standard but worth noting.

Sensor Malfunction/Data Gap During Critical Event: The kitchen temperature sensor reported 'None' twice during the active cooking period (19:16 and 19:44). This data loss obscures whether temperatures spiked dangerously high before dropping back to nominal levels, potentially masking a near-miss fire or excessive heat generation.

C10: At 19:16:00, kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None (while cook surface was ON since 19:15:30).

C11: At 19:44:00, kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None (shortly after cook surface turned OFF at 19:43:00).

Values recovered immediately after (26.03°C at 19:20, 26.38°C at 19:45), suggesting a transient communication or sampling error rather than permanent breakage.

The recovery of values suggests the sensor wasn't permanently broken.

Potential Unattended Cooking Risk / Lack of Safety Intervention: Although no alarm fired, the cook surface was left on for approximately 28 minutes (19:15 to 19:43). Given that only one person appears to be in the living room (based on persistent occupancy there and unoccupied bedroom/kitchen/bathroom), there is a risk that the user was distracted away from the kitchen. The lack of a smoke/CO alert means the system failed to validate safety despite the thermal anomaly.

C10: Living room occupancy = 1 (occupied) from 18:05 through 21:00.

C10/C11: Bedroom, Bathroom, Kitchen occupancy = 0 (unoccupied) during the entire cooking window (19:15-19:43).

C11: No Smoke_CO_Alarm or Water_Leak events recorded in any chunk.

C11: Temperature peaked at 26.89°C, which is safe for ambient air but indicates significant heat source nearby.

The user may have been in the kitchen briefly and left the stove on while moving between rooms, returning to turn it off.

Smart homes often rely on separate smoke detectors; their silence suggests no actual hazard occurred.

Morning Lock State Ambiguity / Possible Forced Entry Attempt Mitigated: The sequence of manual unlock -> door contact change -> auto-lock happened very rapidly (10 seconds). If the door contact sensor registered 'false' as 'closed' (depending on wiring), this could imply the lock engaged while the door was physically ajar, or the user exited and locked it instantly. However, combined with the rapid transition to 'unoccupied' states elsewhere, it looks like a clean exit. But if 'false' meant open, and it went to 'true' (closed) quickly, it's fine. If 'false' meant closed and 'true' meant open, the door opened again? Standard Matter BooleanState for contacts usually maps True=Closed/Secured. In C04: False(14s) -> True(21s). If False=Open, the door opened then closed. Then Auto-Lock. This is normal. BUT, look at A1 in Triage: 'Door lock state flips... without corresponding occupancy'. In C04, Occupancy in Living Room became Unoccupied at 07:30, AFTER the lock event at 07:27. So occupancy DID follow. The triage suspicion might be weak here. Let's stick to the Sensor/Data issues as stronger anomalies.

C04: Rapid succession of LockOperation (Manual Unlock) then LockOperation (Auto Lock) within 10 seconds.

Ambiguity in whether the door was fully secured before auto-lock engaged if the contact sensor timing is slightly off.

Standard behavior for many smart locks is to auto-lock upon detecting the door is closed. The sequence is logical.

Kitchen cook surface ON from 19:15:30 to 19:43:00 while Kitchen, Bedroom, and Bathroom occupancy sensors read 'unoccupied' (0), with only Living Room occupied.

Kitchen temperature sensor reported 'None' at 19:16:00 and 19:44:00, creating data gaps around the active heating period.

Front door lock manual unlock followed immediately by auto-lock at 07:27:12-07:27:22, preceding full household unoccupancy.

Absence of any explicit Fire/Smoke/CO alarm events despite significant localized heat generation in the kitchen.

Status of dedicated Smoke/CO detectors in the kitchen (not listed in focused chunks or structured signals explicitly firing alarms).

Definition of BooleanState for door/window contacts (True=Closed vs True=Open) to confirm the exact physical state during the morning lock event.

User schedule/history to confirm if the user was indeed absent from the kitchen during the 28-minute cooking window.

Details on the dishwasher cycle duration and noise level to rule out if the user was distracted by another appliance.

C10/C11: Kitchen cook surface turned ON at 19:15:30.

C10/C11: Kitchen temp sensor readings rose from ~23°C to a peak of 26.89°C by 19:30.

C11: Cook surface turned OFF at 19:43:00.

C11: Temperatures declined steadily from 26.38°C (19:45) to 22.59°C (21:00).

C11: Dishwasher started at 20:15, consistent with post-dinner cleanup.

C04: At 07:27:12, manual unlock event occurred.

C04: Auto-lock event at 07:27:22 immediately following manual unlock/close sequence.

No other lock activity occurred outside business hours.

C10: At 19:16:00, kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None (while cook surface was ON since 19:15:30).

C10: Living room occupancy = 1 (occupied) from 18:05 through 21:00.

C10/C11: Bedroom, Bathroom, Kitchen occupancy = 0 (unoccupied) during the entire cooking window (19:15-19:43).

C11: No Smoke_CO_Alarm or Water_Leak events recorded in any chunk.

C11: Temperature peaked at 26.89°C, which is safe for ambient air but indicates significant heat source nearby.

C04: Rapid succession of LockOperation (Manual Unlock) then LockOperation (Auto Lock) within 10 seconds.

Ambiguity in whether the door was fully secured before auto-lock engaged if the contact sensor timing is slightly off.

C05 shows stable morning temperatures (23-25 C) with no occupancy anomalies.

C10 shows living room occupancy starting at 18:05, consistent with returning home for dinner.

No smoke/CO alarm events are present, and no lock tampering is observed.

In C11, at 19:44:00, `kitchen_temp_sensor` again reports `MeasuredValue = None` shortly after the cook surface is turned off.

These gaps occur during critical thermal transitions, potentially obscuring the true rate of temperature change or peak values.

Check C05 (21:00-22:30) for any post-dishwasher anomalies or late-night security events.

Verify if 'kitchen_smoke_co_alarm' exists in the device list and check its logs; it was mentioned in Triage but not explicitly logged in Focused Chunks.

Confirm the specific boolean logic definition for door/window contacts to definitively rule out lock malfunctions vs normal behavior.

Check C09/C12-C14 for any overnight temperature drifts or unexplained sensor readings.

The investigator correctly identified the cooking event and occupancy mismatch but relied heavily on 'normalcy' assumptions rather than hard fault evidence.

Risk of False Alarm: Medium. The investigation suggests a 'near-miss' fire due to unattended cooking, but this is speculative without smoke/CO data. The temperature rise (max 26.89°C) is physically possible for ambient air near a stove and does not prove a fire occurred.

Evidence Gap: The 'kitchen_smoke_co_alarm' is listed as a target device in Triage but has no log entries in the provided focused chunks (C04, C10, C11). This is a critical omission for a safety report.

Protocol Check: The investigator handled Matter scaled temperatures correctly (converted raw codes to Celsius), avoiding the common error of treating them as literal degrees.

Next Step: Review C05 to see if the dishwasher cycle completed normally and if any alarms triggered subsequently. Also, verify the status of the smoke detector which is crucial for the safety verdict.

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Layout
Layout: 一室一厅 (Studio/1BR)
- bathroom: 卫生间漏水传感器<water_leak_detector>, 卫生间灯<onoff_light>, 卫生间运动传感器<occupancy_sensor>
- bedroom: 卧室温度传感器<temperature_sensor>, 卧室灯<dimmable_light>, 卧室窗帘<window_covering>, 卧室窗户传感器<contact_sensor>, 卧室运动传感器<occupancy_sensor>
- entrance: 入户门传感器<contact_sensor>, 入户门锁<door_lock>, 玄关灯<onoff_light>
- kitchen: 厨房温度传感器<temperature_sensor>, 厨房灯<onoff_light>, 厨房灶具<cook_surface>, 厨房烟雾报警器<smoke_co_alarm>, 厨房窗户传感器<contact_sensor>, 洗碗机<dishwasher>
- living_room: 客厅主灯<dimmable_light>, 客厅台灯<onoff_light>, 客厅温度传感器<temperature_sensor>, 客厅空调<air_conditioner>, 客厅窗帘<window_covering>, 客厅窗户传感器<contact_sensor>, 客厅运动传感器<occupancy_sensor>

## Deterministic Signals
{
  "room_activity": {
    "living_room": 403,
    "bedroom": 356,
    "kitchen": 301,
    "bathroom": 56,
    "entrance": 14
  },
  "attribute_frequency": {
    "MeasuredValue": 868,
    "Occupancy": 225,
    "OnOff": 19,
    "StateValue": 5,
    "LockState": 4,
    "CurrentPositionLiftPercent100ths": 2,
    "SystemMode": 1,
    "OperationalState": 1,
    "CurrentLevel": 1
  },
  "lock_state_flips": 4,
  "occupancy_events": 225,
  "temperature_patterns": [],
  "value_format_hints": {
    "temperature": "MeasuredValue is shown as Celsius with the raw integer preserved in parentheses.",
    "occupancy": "0=unoccupied, 1=occupied",
    "lock_state": "enumerated lock state rendered as label + raw code"
  }
}

## Chunk Index
[
  {
    "chunk_id": "C00",
    "start_ts": "2026-06-01T00:00:00",
    "end_ts": "2026-06-01T01:50:00",
    "event_count": 80,
    "rooms": {
      "living_room": 27,
      "bedroom": 27,
      "kitchen": 22,
      "bathroom": 4
    },
    "top_devices": [
      "li

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Triage
{
  "primary_task_profile": "composite-safety",
  "secondary_task_profile": "device-health",
  "query_anchor": {
    "target_rooms": [
      "living_room",
      "bedroom",
      "kitchen",
      "bathroom",
      "entrance"
    ],
    "target_devices": [
      "smoke_co_alarm",
      "water_leak_detector",
      "door_lock",
      "cook_surface",
      "temperature_sensor",
      "occupancy_sensor"
    ],
    "target_question": "Analyze the comprehensive status report to determine the current home safety situation and identify any potential risks."
  },
  "focus_rooms": [
    "kitchen",
    "living_room",
    "entrance"
  ],
  "focus_devices": [
    "kitchen_smoke_co_alarm",
    "kitchen_cook_surface",
    "front_door_lock",
    "kitchen_temp_sensor",
    "living_room_occupancy"
  ],
  "focus_chunk_ids": [
    "C11",
    "C04",
    "C10"
  ],
  "suspected_patterns": [
    "Potential fire hazard: High kitchen temperature (26.82 C) coinciding with cook surface being turned off, potentially indicating residual heat or sensor anomaly.",
    "Security risk: Door lock state flips observed in early morning/late night hours without corresponding occupancy, suggesting unauthorized access or malfunction.",
    "Occupancy mismatch: Living room occupied while other rooms are unoccupied during evening hours, consistent with normal usage but requires verification against alarm events."
  ],
  "why_these_chunks": [
    "C11 contains critical evening activity including high kitchen temperatures, cook surface state change, and multiple alarmish events, which are central to safety assessment.",
    "C04 shows early morning door lock activity and rising temper


FG-02-FP: 电暖器/取暖器正常使用

有人在房间且温度上升后趋于稳定（不是持续飙升），无烟雾报警触发

A potential unattended cooking hazard occurred in the kitchen between 18:49 and 19:34, characterized by a cook surface activation with no confirmed user presence or immediate deactivation for approximately 45 minutes.

Explanation: The investigator identified a critical gap where `kitchen_cook_surface` was turned on at 18:49 but not confirmed off until 19:34. During this window, no 'OFF' command or smoke/CO alarm trigger is logged.

Explanation: Kitchen temperature readings remained elevated (26-27°C) during this period, indicating sustained heat emission from the appliance.

Explanation: While the supervisor noted missing chunks (C10-C14) and lack of direct occupancy confirmation in the kitchen, the available evidence (entrance/living room occupancy patterns and lack of safety device triggers) supports the hypothesis that the cook may have been unattended, which constitutes a fire risk.

Explanation: Hypothesis A2 (sensor malfunction) regarding the `None` value is dismissed as a transient logging glitch because valid data immediately follows, and it does not explain the prolonged 'ON' state of the cook surface.

Explanation: Therefore, despite the eventual safe resolution (appliance turned off), the event sequence represents a plausible safety anomaly due to the lack of verification of human supervision during active heating.

C15 timestamp 18:49:30: `kitchen_cook_surface | OnOff.OnOff = on (raw=True)` initiates the hazard.

C15 timestamps 18:49-19:10: Kitchen temperatures remain high (26.24°C - 27.14°C range).

C16 timestamp 19:34:00: `kitchen_cook_surface | OnOff.OnOff = off (raw=False)` marks the end of the unverified active period.

Absence of any `SmokeCOAlarm` or `FireAlarm` events throughout the high-temperature window, implying no automatic detection triggered.

Verify if the cook surface has an automatic timer feature enabled to explain the 19:34 turn-off without manual intervention.

Review camera footage or audio logs from the kitchen between 18:49 and 19:34 to confirm if a person was present.

Check for any network connectivity issues with the kitchen temperature sensor around 18:50 and 19:35 to rule out data gaps masking other events.

MeasuredValue is shown as Celsius with the raw integer preserved in parentheses.

enumerated lock state rendered as label + raw code

These logs follow Matter-style smart-home event semantics.

TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.

OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.

DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.

Determine the current home safety status and identify any potential risks based on comprehensive log analysis.

High temperature in kitchen (cooking activity)

Repeated entrance occupancy with door lock operations

Potential smoke alarm triggers or false positives

C07: Shows rising temperatures and significant entrance activity around mid-day, potentially indicating cooking or guest arrival.

Unattended cooking incident was resolved safely; cook surface was turned off manually or via timer shortly after being activated, followed by normal evening routine.

In C16 at 19:34:00, `kitchen_cook_surface` transitions to `off` (raw=False). This is within the previously missing window (19:10-22:13) identified by the supervisor.

Following the turn-off event, kitchen temperature steadily declines from ~22.7°C at 19:30 to ~22.5°C by 20:00, indicating no sustained heat source.

No smoke or CO alarm triggers are recorded in C16, C17, or C18.

Subsequent events show a standard nighttime wind-down: dishwasher started at 19:45, lights turned off at 22:13, front door locked automatically at 22:13.

There is a gap between the cook surface turning on (18:49) and being confirmed off (19:34). While likely safe, we lack explicit confirmation of user presence during this 45-minute window to definitively rule out a near-miss due to temporary absence.

The home security posture is secure with the front door locked and all major appliances powered down for the night.

At 22:13:47, `front_door_lock` reports `LockState = locked` with `OperationSource=Auto`, confirming automated engagement.

`living_room_ac` and `living_room_light_1` are turned off at 22:13, consistent with sleep mode.

Occupancy sensors in bedrooms (`master_bedroom`, `second_bedroom`) report `unoccupied` starting around 22:00-22:30, while living room remains occupied, suggesting occupants are settling in for the night rather than leaving.

Temperature readings across all rooms stabilize around 22.4-22.6°C, showing no anomalies.

Living room occupancy persists until the end of logs, which is normal for residents staying up, but requires assumption that they will eventually vacate or lock down further.

Potential unattended cooking hazard occurred between 18:49 and 19:34 where the cook surface remained on without immediate verification of user intent.

C15 shows `kitchen_cook_surface` turning ON at 18:49:30.

Kitchen temperature spikes sharply to 27.14°C by 18:35 (before the explicit log entry, but trending up) and remains elevated at 26.24°C at 18:50 immediately after activation.

There is no explicit 'OFF' command logged until 19:34:00 in C16, creating a ~45 minute window where the appliance state was unknown or potentially stuck on.

During this period (C15 end to C16 start), entrance occupancy remains high, but it is unclear if the occupant was in the kitchen attending to the stove or elsewhere.

The `None` value at 18:50 for kitchen temp sensor might indicate sensor overload or network jitter due to heat, though it recovered quickly.

The device did turn off by 19:34, and temperatures cooled down, so no fire occurred. The risk was mitigated either by manual intervention or a timer not explicitly logged as an event trigger in the same way.

Intermittent sensor fault or data logging gap in the kitchen temperature sensor around 18:50.

At 18:50:00, `kitchen_temp_sensor` reports `MeasuredValue = None`.

Immediately at the same timestamp (18:50:00), it also reports a valid value of 26.24 C (likely a duplicate log line with different raw data or a race condition in reporting).

Another `None` occurs at 19:35:00 in C16, coinciding with the cook surface being turned off, possibly due to thermal shock or network congestion during state change.

Values recover instantly in subsequent timestamps (e.g., 18:55, 19:35), ruling out permanent sensor failure. The pattern suggests transient communication issues rather than hardware defect.

C16 timestamp 19:34:00: `kitchen_cook_surface | OnOff.OnOff = off (raw=False)` confirms the end of the high-risk cooking period.

C15 timestamp 18:49:30: `kitchen_cook_surface | OnOff.OnOff = on (raw=True)` initiates the potential hazard.

C19 timestamp 22:13:47: `front_door_lock | DoorLock.LockState = locked (raw=1)` confirms final security status.

Absence of any `SmokeCOAlarm` or `FireAlarm` events throughout C16-C18 despite high kitchen temperatures.

Direct observation or voice/audio logs to confirm if a person was present in the kitchen between 18:49 and 19:34 to verify 'attended' vs 'unattended' status.

Confirmation of whether the cook surface had an automatic timer setting that explains the turn-off at 19:34 without manual interaction.

Explanation for the dual logging at 18:50 (one None, one 26.24 C) to determine if it's a protocol quirk or a transient glitch.

Verify kitchen smoke/CO alarm status during the high-temperature cooking window (18:49-19:34) to rule out undetected fire/smoke events.

Confirm front door lock state history prior to 22:13 to ensure no unauthorized entry or forced unlock occurred.

Check for any 'LockOperation' events or 'DoorContact' open/close transitions between C15 and C19 to verify continuous security posture.

Investigate the cause of `kitchen_temp_sensor` reporting `None` at 18:50 and 19:35; determine if this indicates a sensor fault or just data logging gap.

The investigator correctly identified the cooking event and the final locked state but failed to analyze the critical missing time windows (C10-C14) where the cooking likely started or progressed.

There is a significant gap in evidence regarding the kitchen safety devices (smoke/CO alarms) during the peak temperature spike in C15. Without confirming these alarms did not trigger, we cannot definitively rule out a fire hazard that was suppressed or ignored.

The claim of 'unattended cooking' relies on an absence of evidence (no 'off' command until 19:34). We need to check if the cook surface had a timer or if occupancy sensors in the kitchen (if available) confirm presence. The current logs only show entrance/living room occupancy, which are poor proxies for kitchen activity.

The investigator's hypothesis A2 about sensor malfunction is plausible but unverified. The `None` values need context.

Crucially, the investigator missed checking the security state *before* the final lock at 22:13. Did the door remain closed/locked throughout the evening? C19 shows the final lock, but C15-C18 do not explicitly show repeated lock checks or door contact states for the front door, leaving a potential gap in security verification.

Request chunks C10-C14 to bridge the gap between morning activity and the evening cooking incident, and to provide more granular data around the cooking timeframe.

Normal evening cooking and security routine with stable environmental conditions.

C15 shows kitchen temperature rising to ~27.14 C at 18:35, coinciding with living room occupancy (raw=1) and entrance occupancy (raw=1), consistent with dinner preparation.

Kitchen light (OnOff=True) and cook surface (OnOff=True) activate at 18:49-18:50, confirming active cooking usage.

Kitchen temperature decreases from 27.14 C to 24.52 C by 19:10, indicating the heat source was likely turned off or ventilation engaged after cooking.

C19 shows a standard nighttime security sequence: lights/AC turned off at 22:13, followed by front door contact opening and automatic lock engagement at 22:13:47.

Front door remains locked (LockState=1) throughout the night, and no further entry attempts are logged.

Does not account for the brief 'None' value in kitchen sensor data at 18:50, though this could be transient reporting lag rather than a fault.

Assumes the automatic lock operation was successful without explicit success confirmation beyond the state change, which is standard but technically inferred.

Unattended cooking risk due to delayed shutdown of cook surface relative to temperature peak.

Kitchen temperature peaks at 27.14 C at 18:35 (C15).

Cook surface turns ON at 18:49, but there is no corresponding OFF event recorded in the provided chunks before the end of C15 (19:10) or start of C19 (22:13).

If the cook surface remained on after the meal (post-19:10), it poses a fire risk if unattended.

The gap between the temperature peak (18:35) and the light/surface activation (18:49) is unusual; typically, lights turn on before cooking starts. This might suggest the cook surface was left on earlier, or the logs capture a secondary lighting event.

The logs do not explicitly show the cook surface turning OFF. It is possible it was turned off manually outside the log window or via a smart hub action not captured in these specific Matter attribute logs.

Temperature dropped significantly by 19:10 (to 24.52 C), suggesting the heat source was inactive or ventilation was strong, contradicting the idea of sustained high heat.

Potential sensor glitch or temporary network dropout in kitchen.

At 18:50:00 in C15, kitchen_temp_sensor reports `TemperatureMeasurement.MeasuredValue = None`.

This occurs immediately after the cook surface is activated (18:49:30).

Subsequent readings return to normal (26.24 C at 18:50, then decreasing).

A single 'None' value followed by immediate recovery is often indicative of transient packet loss or sensor polling delay rather than a permanent malfunction.

No other sensors showed simultaneous outages, suggesting localized issue rather than system-wide failure.

The absence of a 'cook surface OFF' event in the logs, despite the temperature drop, creates ambiguity about whether the appliance was safely turned off.

The 'None' value for kitchen temperature at 18:50 coincides exactly with the cook surface activation, potentially linking a sensor reading failure to device interference or power spike.

The automatic lock event at 22:13:47 confirms security posture was maintained, ruling out intrusion risks during the night period.

Logs for the period between 19:10 (end of C15) and 22:13 (start of C19) to confirm if the cook surface was turned off and if any smoke/CO alarms were triggered.

Explicit status of the 'kitchen_smoke_co_alarm' device mentioned in the query anchor, as no alarm events are visible in the focused chunks.

Confirmation of the final state of the kitchen cook surface after 19:10.

No smoke or CO alarm triggers are recorded in C16, C17, or C18.

At 22:13:47, `front_door_lock` reports `LockState = locked` with `OperationSource=Auto`, confirming automated engagement.

`living_room_ac` and `living_room_light_1` are turned off at 22:13, consistent with sleep mode.

Temperature readings across all rooms stabilize around 22.4-22.6°C, showing no anomalies.

C15 shows `kitchen_cook_surface` turning ON at 18:49:30.

At 18:50:00, `kitchen_temp_sensor` reports `MeasuredValue = None`.

Verify the final state of the kitchen cook surface between 19:10 and 22:13 to confirm it was turned off.

Check for any smoke/CO alarm trigger events in the missing time window (19:10-22:13).

Confirm if the 'None' temperature reading at 18:50 was a transient network glitch or a sensor fault by checking surrounding timestamps in C15/C16.

The investigator correctly identified the key risk vector: unattended cooking. However, the evidence is incomplete because the critical gap between the end of C15 (19:10) and the start of C19 (22:13) is missing.

In C15, the cook surface turns ON at 18:49, but no OFF event is recorded before the chunk ends. The temperature drops significantly by 19:10, suggesting the heat source might have been removed or ventilation engaged, but we lack explicit confirmation of the device turning OFF.

Without chunks C16-C18, we cannot verify if the cook surface remained ON for hours (high fire risk) or if it was turned off shortly after. The 'None' value at 18:50 is likely transient given the immediate recovery, but requires context from adjacent logs to rule out intermittent failure.

The investigation must be refined to cover the period where the potential hazard (unattended appliance) persists unchecked.

No false-alarm risk regarding temperature scaling; values are interpreted correctly as centi-degrees.

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Layout
Layout: 两室一厅 (2BR)
- balcony: 洗衣机<laundry_washer>, 阳台灯<onoff_light>, 阳台门传感器<contact_sensor>
- bathroom: 卫生间漏水传感器<water_leak_detector>, 卫生间灯<onoff_light>, 卫生间运动传感器<occupancy_sensor>
- entrance: 入户门传感器<contact_sensor>, 入户门锁<door_lock>, 玄关灯<onoff_light>, 玄关运动传感器<occupancy_sensor>
- kitchen: 厨房温度传感器<temperature_sensor>, 厨房灯<onoff_light>, 厨房灶具<cook_surface>, 厨房烟雾报警器<smoke_co_alarm>, 厨房窗户传感器<contact_sensor>, 洗碗机<dishwasher>
- living_room: 客厅主灯<dimmable_light>, 客厅温度传感器<temperature_sensor>, 客厅空调<air_conditioner>, 客厅窗帘<window_covering>, 客厅窗户传感器<contact_sensor>, 客厅落地灯<onoff_light>, 客厅运动传感器<occupancy_sensor>
- master_bedroom: 主卧温度传感器<temperature_sensor>, 主卧灯<dimmable_light>, 主卧空调<air_conditioner>, 主卧窗帘<window_covering>, 主卧窗户传感器<contact_sensor>, 主卧运动传感器<occupancy_sensor>
- second_bedroom: 次卧温度传感器<temperature_sensor>, 次卧灯<dimmable_light>, 次卧窗帘<window_covering>, 次卧窗户传感器<contact_sensor>, 次卧运动传感器<occupancy_sensor>

## Deterministic Signals
{
  "room_activity": {
    "living_room": 405,
    "master_bedroom": 336,
    "second_bedroom": 336,
    "kitchen": 298,
    "bathroom": 54,
    "entrance": 230
  },
  "attribute_frequency": {
    "MeasuredValue": 1157,
    "Occupancy": 473,
    "OnOff": 14,
    "StateValue": 5,
    "LockState": 4,
    "SystemMode": 1,
    "OperationalState": 1
  },
  "lock_state_flips": 4,
  "occupancy_events": 473,
  "temperature_patterns": [],
  "value_format_hints": {
    "temperature": "MeasuredValue is shown as Celsius with the raw integer preserved in parentheses.",
    "occupancy": "0=unoccupied, 1=occupied",
    "lock_state": "enumerated lock state rendered as label + raw code"
  }
}

## Chunk Index
[
  {
    "chunk_id": "C00",

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Triage
{
  "primary_task_profile": "composite-safety",
  "secondary_task_profile": "device-health",
  "query_anchor": {
    "target_rooms": [
      "kitchen",
      "entrance",
      "living_room"
    ],
    "target_devices": [
      "kitchen_smoke_co_alarm",
      "front_door_lock",
      "kitchen_temperature_sensor",
      "entrance_occupancy_sensor"
    ],
    "target_question": "Determine the current home safety status and identify any potential risks based on comprehensive log analysis."
  },
  "focus_rooms": [
    "kitchen",
    "entrance",
    "living_room"
  ],
  "focus_devices": [
    "kitchen_smoke_co_alarm",
    "front_door_lock",
    "kitchen_temp_sensor",
    "entrance_occupancy"
  ],
  "focus_chunk_ids": [
    "C07",
    "C15",
    "C19"
  ],
  "suspected_patterns": [
    "High temperature in kitchen (cooking activity)",
    "Repeated entrance occupancy with door lock operations",
    "Potential smoke alarm triggers or false positives",
    "Nighttime security state verification"
  ],
  "why_these_chunks": [
    "C07: Shows rising temperatures and significant entrance activity around mid-day, potentially indicating cooking or guest arrival.",
    "C15: Displays a sharp temperature spike in the kitchen (26.39 C) coinciding with living room occupancy, suggesting active cooking which is a primary fire risk vector.",
    "C19: Captures evening/night routine including door locking and AC shutdown, critical for assessing final security posture before sleeping."
  ]
}

## Investigator
{
  "normal_hypotheses": [
    {
      "id": "N1",
      "description": "Unattended cooking incident was resolved safely; cook surface was turned off manually o


活动从卧室开始（住户起床），路径合理（卧室→客厅→厨房→卧室），最终回到卧室

The kitchen cook surface was left on for approximately 49 minutes without intervention, presenting a potential fire hazard due to unattended operation.

Explanation: Analysis of C15 and C16 logs confirms the kitchen_cook_surface turned ON at 18:59:30 and remained ON until 19:48:00, a duration of roughly 49 minutes.

Explanation: This duration is significantly longer than typical active cooking intervals, indicating an 'unattended' state where the user may have been distracted or left the area.

Explanation: While no smoke/CO alarms triggered (suggesting no actual fire occurred), the prolonged activation of a heating element constitutes a safety risk event.

Explanation: Occupancy sensors indicate people were present in the living room and entrance during this time, but did not interact with the kitchen stove, supporting the hypothesis of accidental omission rather than malicious intent or equipment failure alone.

Explanation: Other security checks (door locks) showed normal activity, and water leak detectors showed no events, isolating the primary risk to the kitchen appliance.

kitchen_cook_surface OnOff = on at 2026-06-22T18:59:30

kitchen_cook_surface OnOff = off at 2026-06-22T19:48:00

No intermediate state changes or manual interventions recorded for the cook surface during this interval

Kitchen temperature sensor readings stabilized/dropped after shutoff, confirming heat source removal

Review cooking habits to ensure stoves are monitored continuously.

Consider enabling automatic shut-off timers on smart appliances if available.

Verify that smoke/CO detectors are functional to ensure early warning in future incidents.

Lock state anomalies or unauthorized entry attempts

Smoke/CO alarm triggers without cooking activity

Occupancy discrepancies indicating intruder or malfunction

The kitchen cook surface was left on for an extended period (~49 minutes) and then manually turned off, representing a momentary safety lapse that was resolved without incident.

C15: kitchen_cook_surface turned ON at 18:59:30.

C16: kitchen_cook_surface turned OFF at 19:48:00 (48.5 minutes later).

No smoke/CO alarms triggered during this period in any chunk.

Kitchen temperature sensors reported normal values (dropping from ~26C to ~22C) after the device was turned off, indicating no thermal runaway or fire event.

Occupancy remained consistent (Living Room/Entrance occupied), suggesting someone was home and likely responsible for turning it off.

The duration of being 'on' is unusually long for typical cooking, raising questions about user attention or memory.

No explicit 'user action' log confirms who turned it off, though inference points to occupant.

The home environment is stable with no security breaches or device faults detected.

DoorLock.LockState shows only 4 flips total across all logs, consistent with normal entry/exit behavior.

All temperature readings are within reasonable indoor ranges (22-27 C).

No water leak detector events were recorded.

Sensor 'None' readings at 19:00 and 19:49 recovered instantly in subsequent polls, indicating transient communication glitches rather than permanent malfunction.

Relies on the assumption that the lack of alarm events definitively rules out fire risk, whereas alarms might not trigger if the heat source wasn't igniting materials.

Unattended Cooking Risk / Potential Fire Hazard

C15: Cook surface turned ON at 18:59:30.

C15-C16 Gap: The stove remained ON for approximately 48 minutes without a corresponding OFF event until 19:48:00.

Supervisor Feedback explicitly flagged this as a valid safety concern due to the open flame/heating element risk.

Although resolved, the lack of immediate shutoff indicates a potential safety hazard (forgetfulness, distraction, or incapacity).

The event ended safely; no actual fire occurred.

Could be explained by slow-cooking methods requiring long durations, though 48 minutes of continuous high heat is atypical.

Transient Sensor Malfunction

C15: kitchen_temp_sensor returned `None` at 19:00:00.

C16: kitchen_temp_sensor returned `None` at 19:49:00.

Both instances were followed by valid readings (<1 minute later).

This suggests intermittent connectivity or power issues with the kitchen sensor.

The faults self-resolved immediately, so they did not impact safety decisions (like the stove status).

Time delta between kitchen_cook_surface ON (18:59:30) and OFF (19:48:00): ~49 minutes.

Absence of smoke/CO alarm triggers despite prolonged heating element activation.

Kitchen temperature trend dropping after 19:48:00 (from 22.73C at 19:50 to 22.66C at 20:10), confirming the heat source was removed.

Presence of occupants in Living Room/Entrance throughout the period, making accidental unattended cooking plausible.

Logs defining the specific state transitions of the DoorLock (raw codes) to confirm authorized entry vs unknown access.

Detailed operational logs of the dishwasher (start/stop times) to correlate with occupancy patterns, although currently showing normal operation.

Confirmation of whether the cook surface has an auto-shutoff timer feature that may have failed or been disabled.

C15: kitchen_cook_surface turned ON at 18:59:30.

C16: kitchen_cook_surface turned OFF at 19:48:00 (48.5 minutes later).

No smoke/CO alarms triggered during this period in any chunk.

DoorLock.LockState shows only 4 flips total across all logs, consistent with normal entry/exit behavior.

All temperature readings are within reasonable indoor ranges (22-27 C).

No water leak detector events were recorded.

C15: Cook surface turned ON at 18:59:30.

C15-C16 Gap: The stove remained ON for approximately 48 minutes without a corresponding OFF event until 19:48:00.

Supervisor Feedback explicitly flagged this as a valid safety concern due to the open flame/heating element risk.

Transient Sensor Malfunction

C15: kitchen_temp_sensor returned `None` at 19:00:00.

C16: kitchen_temp_sensor returned `None` at 19:49:00.

Both instances were followed by valid readings (<1 minute later).

This suggests intermittent connectivity or power issues with the kitchen sensor.

Verify DoorLock.LockState transitions and raw codes to rule out unauthorized entry (investigator noted this as missing but did not check available chunks for it).

Check for Water Leak Detector activation events in early morning or evening chunks (currently assumed normal without evidence from relevant timeframes).

Analyze smoke/CO alarm logs specifically during the unattended cooking window (18:59-19:48) to confirm absence of alarms is due to no fire vs. sensor failure.

Investigate the 'None' temperature readings more deeply; while transient, they coincide with high-risk periods (cooking), potentially masking thermal data.

The investigator correctly identified the 'unattended cooking' risk based on the cook surface state duration (~49 mins). However, the investigation is incomplete because it failed to verify the security status (DoorLock) and environmental hazards (Water Leak, Smoke/CO) across the full timeline provided in Available Chunk IDs (C00-C20).

Specifically, the investigator marked 'Missing Information' for DoorLock states but did not actually scan the provided chunks (like C06, C15, C16) which contain occupancy and potential lock-related context (though explicit lock flips weren't seen in the focused chunks, other chunks might have them). More importantly, water leak detectors and smoke/CO alarms were mentioned in the query targets but largely ignored in the detailed analysis beyond a brief mention in N2.

The 'False Alarm Risk' is medium because the investigator relies on 'absence of evidence' (no alarms triggered) to conclude safety, which is weak if sensors are faulty (as hinted by the 'None' temp readings). Also, the investigator did not check if the 'cook surface' being on was accompanied by any other hazard indicators.

We need to see if there are door lock events or water leak events in the omitted chunks (C00-C05, C07-C14) to fully assess the 'Security Breach' and 'Flood' risks requested in the query.

Normal evening routine with no security or safety anomalies. The lock state flips (4 total) represent legitimate entry/exit cycles by residents. Occupancy sensors correctly track presence in the entrance and living room during active hours, while bedrooms remain unoccupied as expected for this time period.

C15 shows entrance_occupancy consistently 'occupied' from 18:21 onwards, correlating with lights turning on (18:21) and AC activation (18:21).

Kitchen activity (lights/cook surface on at 18:59) aligns with typical dinner preparation timing.

Temperature readings are stable and within comfortable ranges (22-27°C), showing no extreme spikes indicative of fire or equipment failure.

Lock state flips (4 total) are low frequency, consistent with normal household ingress/egress rather than forced entry attempts.

Does not account for whether the specific lock flips occurred while the house was officially 'unoccupied' or if they were authorized users.

Assumes the cook surface turning on is supervised, though logs don't explicitly show supervision duration.

Unattended Cooking Risk / Potential Fire Hazard. The kitchen cook surface was turned ON at 18:59:30, but there is no subsequent evidence of it being turned OFF in the provided log window (which ends at 19:15). If the user left the area or fell asleep without turning off the stove, this poses a significant fire risk.

At 18:59:30, `kitchen_cook_surface | OnOff.OnOff = on`.

The log chunk C15 ends at 19:15:00 without any record of the cook surface turning off.

No smoke or CO alarm events are recorded, which might be expected if a fire started, but also suggests the hazard is currently latent (heat build-up phase).

Living room occupancy remains high (people present in adjacent room), but no intervention event (like someone going to check the kitchen) is logged via device interaction.

The log snippet may simply end before the user turns off the stove; we cannot confirm abandonment based solely on the cutoff.

Smart stoves often have auto-shutoff features that might trigger after a timeout, which wouldn't appear as a manual 'off' command but would stop the risk.

Sensor Malfunction or Data Gap in Kitchen Temperature. The kitchen temperature sensor reported 'None' at 19:00:00 immediately following the activation of the cook surface. While temporary data loss can happen, the simultaneous event suggests a potential environmental interference (heat/steam) affecting the sensor or a transient communication fault.

At 19:00:00, `kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None`.

At 19:00:00, the value returns to 25.29 C, indicating recovery, but the gap coincides precisely with the start of heat generation.

Other rooms maintain continuous temperature reporting, isolating the issue to the kitchen environment or device.

Single occurrence of 'None' is often just a network glitch or polling error, not necessarily a functional malfunction requiring repair.

The sensor recovered quickly, suggesting it wasn't permanently damaged.

kitchen_cook_surface turning ON at 18:59:30 with no corresponding OFF event in the log window.

kitchen_temp_sensor returning 'None' at 19:00:00, immediately after cook surface activation.

Consistent 'occupied' status in entrance/living room vs 'unoccupied' in bedrooms, ruling out widespread system confusion.

Logs beyond 19:15:00 to determine if the cook surface was eventually turned off.

Smoke or CO alarm status/logs specifically for the kitchen during the cooking period.

History of previous 'None' readings for the kitchen temp sensor to establish baseline reliability.

C15: kitchen_cook_surface turned ON at 18:59:30.

C16: kitchen_cook_surface turned OFF at 19:48:00 (48.5 minutes later).

No smoke/CO alarms triggered during this period in any chunk.

DoorLock.LockState shows only 4 flips total across all logs, consistent with normal entry/exit behavior.

All temperature readings are within reasonable indoor ranges (22-27 C).

No water leak detector events were recorded.

C15: Cook surface turned ON at 18:59:30.

C15-C16 Gap: The stove remained ON for approximately 48 minutes without a corresponding OFF event until 19:48:00.

Supervisor Feedback explicitly flagged this as a valid safety concern due to the open flame/heating element risk.

Transient Sensor Malfunction

C15: kitchen_temp_sensor returned `None` at 19:00:00.

C16: kitchen_temp_sensor returned `None` at 19:49:00.

Both instances were followed by valid readings (<1 minute later).

This suggests intermittent connectivity or power issues with the kitchen sensor.

C15: kitchen_cook_surface turned ON at 18:59:30.

C16: kitchen_cook_surface turned OFF at 19:48:00 (48.5 minutes later).

No smoke/CO alarms triggered during this period in any chunk.

DoorLock.LockState shows only 4 flips total across all logs, consistent with normal entry/exit behavior.

All temperature readings are within reasonable indoor ranges (22-27 C).

No water leak detector events were recorded.

C15: Cook surface turned ON at 18:59:30.

C15-C16 Gap: The stove remained ON for approximately 48 minutes without a corresponding OFF event until 19:48:00.

Supervisor Feedback explicitly flagged this as a valid safety concern due to the open flame/heating element risk.

Transient Sensor Malfunction

C15: kitchen_temp_sensor returned `None` at 19:00:00.

C16: kitchen_temp_sensor returned `None` at 19:49:00.

Both instances were followed by valid readings (<1 minute later).

This suggests intermittent connectivity or power issues with the kitchen sensor.

Verify if kitchen_cook_surface turns off after 19:15:00 to confirm or refute unattended cooking risk.

Check for smoke/CO alarm events in chunks immediately following 19:00:00 to rule out fire hazard.

Confirm lock state transitions (entry/exit) are authorized by checking DoorLock.LockState logs if available, rather than inferring from occupancy alone.

The investigator correctly identified the 'unattended cooking' risk based on the cook surface being ON at 18:59:30 with no OFF event before the log cut-off at 19:15:00. This is a valid safety concern.

However, the evidence is currently insufficient to determine the final status because the critical resolution (whether the stove was turned off) occurred after the provided window ended.

The temperature sensor 'None' reading at 19:00:00 is noted as a potential malfunction but recovered instantly; this is likely transient and less critical than the open flame/heating element risk.

To finalize the verdict, we must retrieve subsequent logs (likely C16/C17) to see if the stove was turned off manually or via auto-shutoff, and if any alarms triggered.

No protocol misinterpretations detected (temperatures scaled correctly). The focus on security/safety is appropriate.

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Layout
Layout: 两室一厅 (2BR)
- balcony: 洗衣机<laundry_washer>, 阳台灯<onoff_light>, 阳台门传感器<contact_sensor>
- bathroom: 卫生间漏水传感器<water_leak_detector>, 卫生间灯<onoff_light>, 卫生间运动传感器<occupancy_sensor>
- entrance: 入户门传感器<contact_sensor>, 入户门锁<door_lock>, 玄关灯<onoff_light>, 玄关运动传感器<occupancy_sensor>
- kitchen: 厨房温度传感器<temperature_sensor>, 厨房灯<onoff_light>, 厨房灶具<cook_surface>, 厨房烟雾报警器<smoke_co_alarm>, 厨房窗户传感器<contact_sensor>, 洗碗机<dishwasher>
- living_room: 客厅主灯<dimmable_light>, 客厅温度传感器<temperature_sensor>, 客厅空调<air_conditioner>, 客厅窗帘<window_covering>, 客厅窗户传感器<contact_sensor>, 客厅落地灯<onoff_light>, 客厅运动传感器<occupancy_sensor>
- master_bedroom: 主卧温度传感器<temperature_sensor>, 主卧灯<dimmable_light>, 主卧空调<air_conditioner>, 主卧窗帘<window_covering>, 主卧窗户传感器<contact_sensor>, 主卧运动传感器<occupancy_sensor>
- second_bedroom: 次卧温度传感器<temperature_sensor>, 次卧灯<dimmable_light>, 次卧窗帘<window_covering>, 次卧窗户传感器<contact_sensor>, 次卧运动传感器<occupancy_sensor>

## Deterministic Signals
{
  "room_activity": {
    "living_room": 402,
    "master_bedroom": 336,
    "second_bedroom": 336,
    "kitchen": 298,
    "bathroom": 57,
    "entrance": 230
  },
  "attribute_frequency": {
    "MeasuredValue": 1154,
    "Occupancy": 472,
    "OnOff": 14,
    "StateValue": 5,
    "LockState": 4,
    "SystemMode": 1,
    "OperationalState": 1
  },
  "lock_state_flips": 4,
  "occupancy_events": 472,
  "temperature_patterns": [],
  "value_format_hints": {
    "temperature": "MeasuredValue is shown as Celsius with the raw integer preserved in parentheses.",
    "occupancy": "0=unoccupied, 1=occupied",
    "lock_state": "enumerated lock state rendered as label + raw code"
  }
}

## Chunk Index
[
  {
    "chunk_id": "C00",

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Triage
{
  "primary_task_profile": "composite-safety",
  "secondary_task_profile": "device-health",
  "query_anchor": {
    "target_rooms": [
      "all"
    ],
    "target_devices": [
      "door_lock",
      "smoke_co_alarm",
      "water_leak_detector",
      "contact_sensor",
      "occupancy_sensor"
    ],
    "target_question": "Analyze the overall safety status of the home based on device logs, identifying any potential risks such as security breaches (unauthorized entry), environmental hazards (fire/flood), or device faults."
  },
  "focus_rooms": [
    "entrance",
    "kitchen",
    "bathroom",
    "living_room"
  ],
  "focus_devices": [
    "entrance_door_lock",
    "kitchen_smoke_co_alarm",
    "bathroom_water_leak_detector",
    "entrance_contact_sensor",
    "entrance_occupancy_sensor"
  ],
  "focus_chunk_ids": [
    "C15",
    "C06"
  ],
  "suspected_patterns": [
    "Lock state anomalies or unauthorized entry attempts",
    "Smoke/CO alarm triggers without cooking activity",
    "Water leak detection events",
    "Occupancy discrepancies indicating intruder or malfunction"
  ],
  "why_these_chunks": [
    "C15 contains significant activity at the entrance (lock flips, occupancy changes) and high event counts in the living room/kitchen around evening hours (18:21-19:15), which is a critical time for security monitoring.",
    "C06 shows early morning activity (07:50-09:00) with entrance occupancy and temperature shifts, potentially indicating waking patterns or early entries, useful for baseline comparison against nighttime states."
  ]
}

## Investigator
{
  "normal_hypotheses": [
    {
      "id": "N1",
      "description": "The kitc


CH-01-FP: 孩子生病请假在家（家长陪护）

家长也在家（多个房间有活动），不只是儿童房，说明有成人陪护

A temporary loss of temperature monitoring data in the kitchen coincided with the activation of the cooktop, creating a blind spot that prevented detection of potential fire hazards during active cooking.

Explanation: The logs show the kitchen cook surface turning ON at 06:52:33 (C05).

Explanation: Simultaneously, the kitchen temperature sensor reported `None` starting at 06:52:00 and remained unavailable until at least 06:53:03.

Explanation: This creates a critical monitoring gap where thermal data was missing during the initial phase of high-risk activity (cooking).

Explanation: While no explicit fire alarm triggered, the absence of safety telemetry during this window constitutes an unattended cooking risk scenario from a system health perspective.

Explanation: Other hypotheses like nighttime intrusion (A2) are less supported due to lack of evidence for lock flips during unoccupied hours in the provided chunks, and the sensor recovery suggests it was not a permanent hardware failure.

C05: kitchen_temp_sensor reports None at 06:52:00.

C05: kitchen_cook_surface turns ON at 06:52:33.

C05: kitchen_temp_sensor remains None at 06:53:03.

Investigate network connectivity or device firmware issues for the kitchen temperature sensor to prevent future data drops.

Verify if smoke/CO alarms have independent sensors that do not rely on the temperature sensor's availability.

Review lock state logs for chunks C01-C02 to definitively rule out any unauthorized entry events associated with the '5 flips' count.

Analyze the comprehensive status report to determine the current home security situation and identify any potential risks.

Absence of active fire/water alarms despite high occupancy (normal state)

Lock state fluctuations (5 flips) requiring verification of normal entry/exit vs forced entry

Temperature trends indicating HVAC operation or window openings

Occupancy patterns confirming presence for safety validation

C00: Establishes baseline night-time state (unoccupied, stable temps, no alarms).

C05: Captures morning wake-up transition; key for verifying lock/unlock sequences and initial occupancy changes.

C28: End-of-day review to check if all systems returned to safe state before final sleep period.

Normal morning routine with automated security re-engagement. The household woke up, occupants moved to common areas (kitchen/dining), and a resident manually exited the house while the auto-lock engaged immediately after.

C04/C05: Master bedroom occupancy transitions from unoccupied to occupied at 06:12, followed by lights turning on, indicating waking up.

C05: Kitchen cook surface turns ON at 06:52:33, consistent with breakfast preparation.

C06: At 07:19:20, front door lock performs a Manual Unlock operation. Immediately after (07:19:23), it performs an Auto Lock operation, returning the state to 'locked'. This sequence is characteristic of a resident unlocking the door to leave, stepping out, and the smart lock automatically engaging behind them.

Does not fully explain the transient 'None' value for the kitchen temperature sensor in C05, though this could be a minor communication glitch rather than a safety issue.

Normal nighttime sleep cycle with stable environmental conditions. No unauthorized access or hazardous events occurred during the night.

C00-C04: All rooms show 'unoccupied' status throughout the night (00:00 - 05:00).

C00-C04: Temperature readings remain within a narrow, stable range (approx 22-24 C), indicating HVAC stability and no open windows/doors causing drastic changes.

C28: Evening activity shows normal occupancy patterns in living room, dining room, and bedrooms, ending with stable temperatures before the next day's cycle begins.

Lacks direct visibility into DoorLock states for the entire night period (C01-C04) due to missing chunks, relying on the absence of intrusion alarms or occupancy spikes as indirect evidence.

Unattended Cooking Risk / Sensor Blind Spot. The kitchen temperature sensor failed to report values ('None') precisely when the cooking surface was activated, creating a gap in fire hazard monitoring.

C05: At 06:52:00, `kitchen_temp_sensor` reports `TemperatureMeasurement.MeasuredValue = None`.

C05: Minutes prior (06:52:33), `kitchen_cook_surface` turned ON.

C05: The sensor remains unavailable (`None`) until at least 06:53:03, then recovers later. This coincides with the initial phase of cooking activity.

The lack of temperature data during active cooking prevents detection of abnormal heat buildup or smoke generation via thermal sensors.

The sensor eventually recovered, so it wasn't a permanent failure.

No explicit smoke/CO alarm triggers are present in the logs to confirm a fire event.

The 'None' value could be a temporary network drop unrelated to the cooking itself.

Potential Nighttime Intrusion. Structured signals indicate 5 lock state flips. If these occurred during the unoccupied night hours (C01-C04) without corresponding occupancy in the entrance area, it suggests forced entry or a malfunctioning lock.

Structured Signals: `lock_state_flips: 5`.

C00-C04: The entrance area is consistently recorded as 'unoccupied' throughout the early morning hours (00:00 - 06:00).

If any of the 5 flips happened between midnight and 06:00, an unlocked state would imply an open door while the house was empty, posing a high security risk.

The specific timestamps of the 5 flips are not visible in the provided chunks C00, C03, C04, C05, C06, C28. C06 only shows one flip at 07:19.

It is plausible all 5 flips occurred during the daytime (not shown in detail) or were part of the single morning exit event if the count includes rapid manual/auto toggles.

Door Contact Sensor False Positive or Delayed State. The contact sensor showed a brief transition that might indicate a door slightly ajar during the locking event.

C06: At 07:19:22, `front_door_contact` briefly shows `false` (open) then `true` (closed) milliseconds before the final lock engagement at 07:19:23.

While likely just the mechanics of closing the door before locking, a rapid flicker can sometimes indicate a loose contact or a door that didn't latch smoothly before the lock engaged.

The timing (2ms difference) is consistent with normal door closure physics before a lock engages.

No error code or stuck-open state persisted.

The 'None' value for kitchen_temp_sensor at 06:52:00 directly overlapping with the activation of the kitchen_cook_surface at 06:52:33 creates a critical monitoring blind spot during a high-risk activity.

The discrepancy between the '5 lock state flips' in structured signals and the limited visibility of those events in the provided chunks necessitates checking C01-C04 to rule out nighttime intrusion.

The clear manual-unlock followed by auto-lock sequence in C06 confirms normal exit behavior for the morning, reducing the likelihood that the flips are purely malicious, but doesn't eliminate the need to verify the other 4 flips.

Chunks C01 and C02 covering 01:00-03:00 to verify the timestamps of the remaining 4 lock state flips mentioned in Structured Signals.

Explicit Smoke/CO alarm logs for the kitchen during the 06:50-07:00 window to definitively rule out fire/smoke despite the sensor failure.

Detailed device health logs for the kitchen_temp_sensor to determine if the 'None' value indicates a connectivity dropout or a hardware fault.

Verification of lock state timestamps for the '5 flips' mentioned in Structured Signals to distinguish between daytime usage and potential nighttime intrusion.

Confirmation of kitchen temperature sensor health status (connectivity vs hardware fault) given the `None` value during cooking.

The investigator correctly identified the morning routine and the sensor blind spot. However, the hypothesis A2 (Potential Nighttime Intrusion) relies on an unverified count of '5 lock state flips'. The provided chunks (C03-C06) only show one explicit flip at 07:19. Without C01 and C02, we cannot determine if other flips occurred during the unoccupied night hours (00:00-06:00). This is a critical gap for security analysis.

The risk of false alarm is medium because the '5 flips' could be normal daytime activity not fully captured in the selected chunks, or it could indicate a malfunctioning lock. We need the missing time window to rule out forced entry.

The sensor failure (A1) is noted but secondary to the security ambiguity. The investigation should prioritize resolving the lock state timeline.

Normal daily routine with standard safety profiles. The home transitions from night-time unoccupied/low activity to morning occupancy, followed by cooking and evening relaxation. No security breaches or fire hazards are evident.

C00 shows stable temperatures (~22.7-23.0 C) and zero occupancy across all rooms during night hours (00:00-01:10), indicating the house is securely locked and empty.

C05 shows a logical wake-up sequence: Occupancy in Master Bedroom and Kids Room triggers lights and window adjustments. Kitchen cook surface turns on briefly for breakfast preparation.

Lock state flips (5 total per Structured Signals) likely correspond to normal entry/exit events or smart lock auto-relocks, which are common in smart homes.

No smoke, CO, or water leak alarms are triggered in any chunk.

Kitchen temperature remains stable (around 24-25 C in C05, dropping to 22-23 C at night), consistent with brief cooking activity rather than an unattended fire.

The 'kitchen_temp_sensor' reports 'None' twice in C05 (06:52 and 06:53). While this could be a temporary sensor glitch, it creates a blind spot during active cooking.

The specific nature of the 5 lock state flips is not detailed in the focused chunks, leaving a minor ambiguity about whether they were authorized entries or potential forced attempts that succeeded.

Unattended Cooking / Fire Risk due to Sensor Blind Spot. During the morning cooking event in C05, the kitchen temperature sensor goes offline ('None') precisely when the cook surface is turned on and then off. This prevents verification that the kitchen cooled down properly after use, potentially masking a lingering heat source or failed appliance shutdown.

[2026-06-17T06:51:00] kitchen_cook_surface | OnOff.OnOff = off

[2026-06-17T06:51:30] kitchen_window_contact | BooleanState.StateValue = false (Window closed)

[2026-06-17T06:52:00] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None

[2026-06-17T06:52:33] kitchen_cook_surface | OnOff.OnOff = on (Cook surface reactivated shortly after being off)

[2026-06-17T06:53:03] kitchen_temp_sensor | TemperatureMeasurement.MeasuredValue = None

The sensor returns to reporting values later in C05 (06:55 onwards), suggesting the 'None' readings were transient communication errors or buffer issues rather than permanent failure.

There is no explicit thermal runaway pattern; temperatures reported before and after are within normal ranges.

Potential Unauthorized Entry / Lock Bypass. The structured signals indicate 5 lock state flips. If these occurred during the night (C00) or early morning without corresponding occupancy logs in the entrance area, it could indicate a forced entry or tailgating event where the door was opened but no one was detected immediately by the proximity sensor, or the occupant bypassed detection.

Structured Signals show 'lock_state_flips': 5.

C00 (Night) shows Entrance Occupancy = 0 consistently.

C05 (Morning) starts with Entrance Occupancy = 0 until late in the sequence (not explicitly shown entering in C05 snippets, but general occupancy rises).

If lock flips happened between 01:10 (end of C00) and 06:20 (start of C05) without subsequent entrance occupancy, it implies a breach or sensor misalignment.

We do not have the raw log for the time gap between C00 and C05. The lock flips might have occurred during the day or evening (C28 covers evening, showing entrance occupied).

The simultaneous occurrence of 'kitchen_cook_surface' activation/deactivation and 'kitchen_temp_sensor' returning 'None' values in C05 is the strongest indicator of a potential safety monitoring gap.

The count of 5 lock state flips in the absence of explicit lock-event logs in the focused chunks requires correlation with full-day logs to distinguish normal usage from intrusion.

Consistent 'unoccupied' status in C00 confirms baseline security integrity at night.

Full log data between 01:10 and 06:20 to account for the 5 lock state flips and verify if any unauthorized access occurred during the night.

Detailed history of the 'kitchen_temp_sensor' 'None' events to determine if it was a persistent fault or intermittent connectivity issue.

Smoke/CO alarm status logs specifically for the kitchen area during the cooking event in C05.

C05: Kitchen cook surface turns ON at 06:52:33, consistent with breakfast preparation.

C00-C04: All rooms show 'unoccupied' status throughout the night (00:00 - 05:00).

C05: At 06:52:00, `kitchen_temp_sensor` reports `TemperatureMeasurement.MeasuredValue = None`.

C05: Minutes prior (06:52:33), `kitchen_cook_surface` turned ON.

The lack of temperature data during active cooking prevents detection of abnormal heat buildup or smoke generation via thermal sensors.

Structured Signals: `lock_state_flips: 5`.

C00-C04: The entrance area is consistently recorded as 'unoccupied' throughout the early morning hours (00:00 - 06:00).

Verify lock state logs in chunks C01-C04 to correlate with the '5 flips' mentioned in Structured Signals and determine if they occurred during the night (security risk) or day.

Check for explicit Smoke/CO alarm events in C05 surrounding the cooking activity to rule out fire hazards definitively.

Investigate the cause of 'kitchen_temp_sensor' returning 'None' in C05; check device health logs or other sensors for correlated connectivity issues.

The investigator correctly identifies potential risks but relies on 'Structured Signals' summary data ('5 lock state flips') without verifying the raw logs for those specific events. The provided chunks (C00, C05, C28) do not contain DoorLock events, leaving a critical gap in the security analysis.

Hypothesis A2 (Intrusion) is speculative because the evidence (lock flips) is missing from the inspected context. We need to see if these flips coincided with unoccupied states in the entrance area during the night.

Hypothesis A1 (Fire Risk) is based on a sensor blind spot. While valid as a risk, it is not confirmed as an active fault or emergency. The temperature readings before/after are normal.

Matter protocol notes are respected: temperatures are correctly interpreted as Celsius (e.g., 2271 -> 22.71 C). No false alarms detected regarding value scaling.

Refinement needed: Pull chunks covering the night hours (likely C01-C04) to analyze door lock activity and ensure no unauthorized access occurred while the house was empty.

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Layout
Layout: 三室两厅 (3BR)
- balcony: 洗衣机<laundry_washer>, 阳台灯<onoff_light>, 阳台门传感器<contact_sensor>
- dining_room: 餐厅灯<dimmable_light>, 餐厅运动传感器<occupancy_sensor>
- entrance: 入户门传感器<contact_sensor>, 入户门锁<door_lock>, 玄关灯<onoff_light>, 玄关运动传感器<occupancy_sensor>
- kids_room: 儿童房温度传感器<temperature_sensor>, 儿童房灯<dimmable_light>, 儿童房窗帘<window_covering>, 儿童房窗户传感器<contact_sensor>, 儿童房运动传感器<occupancy_sensor>
- kitchen: 厨房温度传感器<temperature_sensor>, 厨房漏水传感器<water_leak_detector>, 厨房灯<onoff_light>, 厨房灶具<cook_surface>, 厨房烟雾报警器<smoke_co_alarm>, 厨房窗户传感器<contact_sensor>, 洗碗机<dishwasher>
- living_room: 客厅主灯<dimmable_light>, 客厅副灯<dimmable_light>, 客厅氛围灯<onoff_light>, 客厅温度传感器<temperature_sensor>, 客厅烟雾报警器<smoke_co_alarm>, 客厅空调<air_conditioner>, 客厅窗帘1<window_covering>, 客厅窗户传感器1<contact_sensor>, 客厅窗户传感器2<contact_sensor>, 客厅运动传感器<occupancy_sensor>
- master_bathroom: 主卫漏水传感器<water_leak_detector>, 主卫灯<onoff_light>, 主卫运动传感器<occupancy_sensor>
- master_bedroom: 主卧床头灯<onoff_light>, 主卧温度传感器<temperature_sensor>, 主卧灯<dimmable_light>, 主卧空调<air_conditioner>, 主卧窗帘<window_covering>, 主卧窗户传感器<contact_sensor>, 主卧运动传感器<occupancy_sensor>
- second_bathroom: 次卫漏水传感器<water_leak_detector>, 次卫灯<onoff_light>
- second_bedroom: 次卧灯<dimmable_light>, 次卧空调<air_conditioner>, 次卧窗帘<window_covering>, 次卧窗户传感器<contact_sensor>, 次卧运动传感器<occupancy_sensor>

## Deterministic Signals
{
  "room_activity": {
    "living_room": 402,
    "master_bedroom": 520,
    "kids_room": 520,
    "kitchen": 303,
    "dining_room": 223,
    "second_bedroom": 48,
    "master_bathroom": 54,
    "entrance": 231,
    "second_bathroom": 1
  },
  "attribute_frequency": {
    "MeasuredValue": 1156,
    "Occupancy": 1097,
    "OnOff": 27,

## Query
以下是家庭设备的综合状态报告。请综合分析所有信息，判断家庭当前的安全状况，指出任何潜在风险。

## Matter Notes
- These logs follow Matter-style smart-home event semantics.
- TemperatureMeasurement.MeasuredValue is represented in centi-degrees Celsius in this benchmark: 2466 means 24.66 C, not 2466 C.
- BooleanState and other protocol booleans should be interpreted using transitions and surrounding events, not naive natural-language assumptions from a single isolated value.
- OccupancySensing.Occupancy uses 0=unoccupied and 1=occupied.
- DoorLock.LockState is an enumerated state; formatted logs may show both the label and the raw code.
- A device-fault conclusion requires direct fault evidence such as stuck values, repeated non-recovery, explicit alarm/fault events, or impossible state transitions. Scaled temperature values alone are not enough.

## Triage
{
  "primary_task_profile": "composite-safety",
  "secondary_task_profile": "device-health",
  "query_anchor": {
    "target_rooms": [
      "all"
    ],
    "target_devices": [
      "smoke_co_alarm",
      "water_leak_detector",
      "door_lock",
      "occupancy_sensor",
      "temperature_sensor"
    ],
    "target_question": "Analyze the comprehensive status report to determine the current home security situation and identify any potential risks."
  },
  "focus_rooms": [
    "kitchen",
    "entrance",
    "living_room",
    "master_bedroom"
  ],
  "focus_devices": [
    "kitchen_smoke_co_alarm",
    "kitchen_water_leak_detector",
    "entrance_door_lock",
    "entrance_contact_sensor",
    "kitchen_cook_surface",
    "all_occupancy_sensors"
  ],
  "focus_chunk_ids": [
    "C00",
    "C05",
    "C28"
  ],
  "suspected_patterns": [
    "Absence of active fire/water alarms despite high occupancy (normal state)",
    "Lock state fluctuations (5 flips) requiring verification of normal entry/exit vs forced entry",
    "Temperature trends indicating HVAC operation or window openings",
    "Occupancy patterns confirming presence for safety validation"
  ],
  "why_these_chunks": [
    "C00: Establishes baseline night-time state (unoccupied, stable temps, no alarms).",
    "C05: Captures morning wake-up transition; key for verifying lock/unlock sequences and initial occupancy changes.",
    "C28: End-of-day review to check if all systems returned to safe state before final sleep period."
  ]
}

## Investigator
{
  "normal_hypotheses": [
    {
      "id": "N1",
      "description": "Normal morning routine with automated security re-engagement. The