initial=4 cycles=8 threshold=1/2 alternating_copies=64 alternating_cost=80
initial=4 cycles=8 threshold=1/4 alternating_copies=4 alternating_cost=20
initial=128 cycles=16 threshold=1/2 alternating_copies=4096 alternating_cost=4128
initial=128 cycles=16 threshold=1/4 alternating_copies=128 alternating_cost=160
PASS; legal_sequences=1912; lengths=0..12; state checks only
