b=1.800 B=3 m=20 MARKED: status optimal  beta=0.955507  (beta1=0.922299, g22(0)/2=1.9479, g12hat(0)=1.9147)  value 1-M/beta with M from window
   check: min g11 -2.35e-07  min g12 -3.58e-06  min g22 9.74e-11 (x in (0,30))
   check: min eigenvalue of Hhat on fine xi grid -2.65e-06 (at xi=0.8762)
