t000__ep012__blocks
- suite / variant:
/ - instruction: Stack the yellow block on the wooden block
- success: False
- control steps: 297 (5.9s at 50 Hz)
- policy inferences: 52 (replan_steps=5)
- video:
blocks/ep012/rollout.mp4 - features:
52prefix tensors (prefix; model=``)
Semantic timeline
| seconds | control_step | policy_step | phrase |
|---|---|---|---|
| 0.0–3.0 | 0–149 | 0–29 | reaching toward yellow block |
| 3.0–5.9 | 150–296 | 30–59 | closing gripper and lifting empty |
Failure
- yes
- onset type: obvious_mistake
- onset: 5.02 s (00:05.0)
- frame / control_step: 251 (policy_step=50, chunk_index=1)
- coarse onset: 3.8 s (refined=True)
- mode: grasp_failure
- reason: The robot attempted to grasp the yellow block, but failed to securely grasp it, causing the end-effector to lift up empty while the yellow block remained on the table. Summary: failed grasp on yellow block; lifting empty gripper
- recovery: Re-align the end-effector above the yellow block, lower it to surround the block, close the fingers firmly, and proceed to stack it on the wooden block. Summary: re-align gripper; regrasp yellow block; stack on wooden block
- prevention: Ensure the gripper descends sufficiently low and centers around the yellow block before closing the fingers to guarantee a secure grasp. Summary: position lower over yellow block; secure firm grip before lifting
- justification: Around 3.8 seconds into the rollout, the robot closes its gripper on the yellow block but fails to establish a secure hold. It subsequently lifts away empty, leaving the block on the table.