Record 0495596149ad460ab708f3445d7922d8

FAIL

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

✕FAILanswered "ANSWER: [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4,..." · model Gemma 3 27B

finish_reason: stop · tokens in/out: 475/3580 · cost: $0.001121 · latency: 118341.7 ms

code_tracetemplatestop

verifier_detail: kind=code_trace;campaign=1;query=final_value;detail=wrong_value;n_stmts=46;trace_len=44;traps=aliasing_on=0;late_binding_on=0;shadowing_on=0;inclusive_range_trap_on=0;negative_modulo_on=0;mutable_default_on=0;confusability=0

trap kind(s) this world was seeded for: aliasing_on=0

lineage: 04955961

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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 1,136 chars · 475 tokens in

Here is a short Python program.

```python
bins = [3, 7, 7]
codes = [4, 5, 4]
marks = [0, 8, 4, 2]
codes = codes + [4]
for entry in codes:
    bins += [entry]
bins.append(marks[0])
bins.append(codes[0])
marks.extend([8, 7])
marks.extend([5, 7])
marks.append(3)
if len(codes) > 2:
    codes = codes + [6]
    codes.append(2)
else:
    for cur in bins:
        bins += [cur]
        bins += [cur]
if len(codes) > 7:
    marks = bins[1:]
else:
    if len(marks) < 9:
        marks.extend([6, 2])
        marks.extend([5, 5])
    marks[0] = 5
for e in codes:
    bins += [e]
marks = marks + [7]
codes = codes + [1]
codes.append(7)
codes = codes + [7]
marks.extend([2, 3])

def pack(q):
    w = q + 7
    return w * 2

marks[-1] = 7
codes.append(6)
if len(bins) > 8:
    marks.append(8)
    codes.extend([9, 0])
marks = marks + [5]
marks.extend([0, 3])
codes = bins[1:]
if len(marks) >= 9:
    codes[0] = 5
else:
    marks.extend([2, 6])
    codes[-1] = 3
marks.extend([6, 1])
```

After this program runs, what is the value of `bins`? Work through it carefully, then give the final answer on its own last line as `ANSWER: <python literal>`.

Response 3,580 tokens out · finish: stop

Let's trace the execution of the Python code step by step to determine the final value of `bins`.

1. `bins = [3, 7, 7]`
2. `codes = [4, 5, 4]`
3. `marks = [0, 8, 4, 2]`
4. `codes = codes + [4]`  => `codes = [4, 5, 4, 4]`
5. `for entry in codes:`:
   - `entry = 4`: `bins += [4]` => `bins = [3, 7, 7, 4]`
   - `entry = 5`: `bins += [5]` => `bins = [3, 7, 7, 4, 5]`
   - `entry = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4]`
   - `entry = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4]`
6. `bins.append(marks[0])` => `bins.append(0)` => `bins = [3, 7, 7, 4, 5, 4, 4, 0]`
7. `bins.append(codes[0])` => `bins.append(4)` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4]`
8. `marks.extend([8, 7])` => `marks = [0, 8, 4, 2, 8, 7]`
9. `marks.extend([5, 7])` => `marks = [0, 8, 4, 2, 8, 7, 5, 7]`
10. `marks.append(3)` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3]`
11. `if len(codes) > 2:` (len(codes) = 4 > 2 is true)
   - `codes = codes + [6]` => `codes = [4, 5, 4, 4, 6]`
   - `codes.append(2)` => `codes = [4, 5, 4, 4, 6, 2]`
12. `if len(codes) > 7:` (len(codes) = 6 > 7 is false)
   - `else:`
     - `for cur in bins:`:
       - `cur = 3`: `bins += [3]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3]`
         `bins += [3]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3]`
       - `cur = 7`: `bins += [7]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7]`
         `bins += [7]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7]`
       - `cur = 7`: `bins += [7]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7]`
         `bins += [7]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7]`
       - `cur = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4]`
         `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4]`
       - `cur = 5`: `bins += [5]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5]`
         `bins += [5]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5]`
       - `cur = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4]`
         `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4]`
       - `cur = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4]`
         `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4]`
       - `cur = 0`: `bins += [0]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0]`
         `bins += [0]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0]`
       - `cur = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4]`
         `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4]`
13. `for e in codes:`:
   - `e = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4]`
   - `e = 5`: `bins += [5]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5]`
   - `e = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4]`
   - `e = 4`: `bins += [4]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4, 4]`
   - `e = 6`: `bins += [6]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4, 4, 6]`
   - `e = 2`: `bins += [2]` => `bins = [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4, 4, 6, 2]`
14. `marks = marks + [7]` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7]`
15. `codes = codes + [1]` => `codes = [4, 5, 4, 4, 6, 2, 1]`
16. `codes.append(7)` => `codes = [4, 5, 4, 4, 6, 2, 1, 7]`
17. `codes = codes + [7]` => `codes = [4, 5, 4, 4, 6, 2, 1, 7, 7]`
18. `marks.extend([2, 3])` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7, 2, 3]`
19. `marks[-1] = 7` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7, 2, 7]`
20. `codes.append(6)` => `codes = [4, 5, 4, 4, 6, 2, 1, 7, 7, 6]`
21. `if len(bins) > 8:` (len(bins) = 32 > 8 is true)
   - `marks.append(8)` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7, 2, 7, 8]`
   - `codes.extend([9, 0])` => `codes = [4, 5, 4, 4, 6, 2, 1, 7, 7, 6, 9, 0]`
22. `marks = marks + [5]` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7, 2, 7, 8, 5]`
23. `marks.extend([0, 3])` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7, 2, 7, 8, 5, 0, 3]`
24. `codes = bins[1:]` => `codes = [7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4, 4, 6, 2]`
25. `if len(marks) >= 9:` (len(marks) = 16 >= 9 is true)
   - `codes[0] = 5` => `codes = [5, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4, 4, 6, 2]`
26. `marks.extend([6, 1])` => `marks = [0, 8, 4, 2, 8, 7, 5, 7, 3, 7, 2, 7, 8, 5, 0, 3, 6, 1]`

Therefore, the final value of `bins` is:

ANSWER: [3, 7, 7, 4, 5, 4, 4, 0, 4, 3, 3, 7, 7, 7, 7, 4, 4, 5, 5, 4, 4, 4, 4, 0, 0, 4, 4, 4, 5, 4, 4, 6, 2]

Reasoning not captured

(no reasoning captured)

Realized dims 17

dim	value
aliasing_on	0.0
answer_size	45.0
distractor_fraction	0.0
identifier_confusability	0.0
inclusive_range_trap_on	0.0
late_binding_on	0.0
max_nesting	2.0
mutable_default_on	0.0
n_closures	0.0
n_foil_matches	0.0
n_live_aliases	0.0
n_statements	46.0
n_variables	3.0
negative_modulo_on	0.0
shadowing_on	0.0
trace_length	44.0
traps_on	0.0

Latent params 11

param	value
aliasing_on	0.0
distractor_fraction	0.0
identifier_confusability	0.0
inclusive_range_trap_on	0.0
late_binding_on	0.0
max_nesting	2.0
mutable_default_on	0.0
n_statements	46.0
n_variables	3.0
negative_modulo_on	0.0
shadowing_on	0.0