SAT Competition 2026 · Main Track
Soelberg: verified model
Checkable result on soelberg_unit_223: the Marca 369 model satisfies all 328,719 clauses. Official scores.csv records 33/33 timeouts and 0 verified results.
328719 / 328719
The result
Instance soelberg_unit_223, algebra family, SC2026 Main Track. A DIMACS model from Marca 369 satisfies 328,719 of 328,719 clauses (0 violations), checked with a dependency-free Python script.
Instance
soelberg_unit_223
GBD hash
a42230be4432b010789b6f97b090343c
SHA-256 (.cnf.xz)
21daca87583af83d1bb6f8b9beb20e020ada06f19150dc41e0b3162f2dd522db
SHA-256 (model)
adb2a19222f91aab4469abc45ecdb1fc583de078b35f2a10de3e0bf32693f73e
satisfied / violated
328719 / 0
Verifier time
0.283 s
Exact wording of what the official results show: in the SC2026 Main Track scores, all 33 solvers reported on this instance have status solver-timeout; 0 sat-verified and 0 unsat-verified. We do not claim what solvers outside this list or outside this competition may have obtained.
Precision note: GBD already lists the instance as sat. These figures show a checkable model against 33/33 Main Track timeouts — not a claim that the sat status was unknown.
33/33 solver-timeout · 0 verified
scores.csv
What the official record shows
Rows from scores.csv. All 33 entries for this instance’s GBD hash have status solver-timeout. Retrieved: 2026-10-30 05:12:03 Europe/Lisbon.
| # | solverid | runtime | status |
|---|---|---|---|
| 1 | anders_satsuma-iter-kissat[main] | 5000.06 | solver-timeout |
| 2 | anders_satsuma-iter-ae-kissat-mab[main] | 5000.03 | solver-timeout |
| 3 | biere_cadical3[main] | 5000.11 | solver-timeout |
| 4 | biere_isasat[main] | 5000.05 | solver-timeout |
| 5 | biere_kissat-biere[main] | 5000.01 | solver-timeout |
| 6 | ding_kissat-mab-eae1[main-ai] | 5000.09 | solver-timeout |
| 7 | ding_kissat-mab-eae2[main-ai] | 5000.08 | solver-timeout |
| 8 | ding_kissat-mab-eae3[main-ai] | 5000.07 | solver-timeout |
| 9 | faraja_llmg[exp-ai] | 5002.44 | solver-timeout |
| 10 | gopalan_kissat-evolve[main-ai] | 5000.08 | solver-timeout |
| 11 | gopalan_kissat-evolve-b2[main-ai] | 5000.07 | solver-timeout |
| 12 | gopalan_kissat-evolve-r1[main-ai] | 5000.10 | solver-timeout |
| 13 | gopalan_kissat-evolve-rb[main-ai] | 5000.07 | solver-timeout |
| 14 | guo_kissat-ae-eg[main] | 5000.09 | solver-timeout |
| 15 | guo_kissat-ae-hucb[main] | 5000.09 | solver-timeout |
| 16 | green_lymphosat[main-ai] | 5000.11 | solver-timeout |
| 17 | green_lymphosat-verified[main-ai] | 5000.35 | solver-timeout |
| 18 | liang_kissat-lr-ds[main] | 5000.04 | solver-timeout |
| 19 | liang_kissat-mab-da[main] | 5000.06 | solver-timeout |
| 20 | oertel_satsuma-lex-kissat[main] | 5000.09 | solver-timeout |
| 21 | oertel_satsuma-lex-ae-kissat-mab[main] | 5000.22 | solver-timeout |
| 22 | reeves_cadical-xlc-freeze[main] | 5000.07 | solver-timeout |
| 23 | yalun_kissat-eda-1[main] | 5000.22 | solver-timeout |
| 24 | yalun_kissat-eda-2[main] | 5000.10 | solver-timeout |
| 25 | yalun_kissat-eda-3[main] | 5000.02 | solver-timeout |
| 26 | yalun_kissat-eda-4[main] | 5000.04 | solver-timeout |
| 27 | zheng_kissat-mab-hypre[main] | 5000.10 | solver-timeout |
| 28 | zheng_kissat-mab-hypre-v2[main] | 5000.11 | solver-timeout |
| 29 | zheng_kissat-mab-hypre-evolve[main-ai] | 5000.05 | solver-timeout |
| 30 | zheng_kissat-mab-hypre-satlution[main-ai] | 5000.30 | solver-timeout |
| 31 | zhenwei_kissat-sup[exp] | 5000.15 | solver-timeout |
| 32 | zhenwei_mergesat[main] | 5000.32 | solver-timeout |
| 33 | zhenwei_mergesat-l[main-ai] | 5000.17 | solver-timeout |
Python · stdlib
Independent check
Verifier output on the published instance and model:
instance_sha256 21daca87583af83d1bb6f8b9beb20e020ada06f19150dc41e0b3162f2dd522db model_sha256 adb2a19222f91aab4469abc45ecdb1fc583de078b35f2a10de3e0bf32693f73e header_nvars 70863 header_ncls 328719 clauses_checked 328719 satisfied 328719 violated 0 time_s 0.283 RESULT OK: model satisfies all clauses
Verify it yourself
01
Download the pack
soelberg-sc2026-evidence.tar.gz from this page.
02
Run the verifier
python3 verify_soelberg.py soelberg_unit_223.cnf.xz modelo_soelberg.txt
03
Check hashes
Printed SHA-256 values must match the hashes on this page and MANIFEST.sha256.
Marca 369
Founder
Claudio Fernandes, 33. Self-taught. Built this result alone using AI tools, without writing the code himself. Thinking background: geometry and competitive chess (his own account).