printed (z+1) eps=1.00: identity ratio spread 7.7e-15 ; min spectral abscissa found over K: -4.6431 | deadbeat L -> K: closed-loop eigenvalues [-1.+0.j -1.+0.j -1.-0.j -1.+0.j]
printed (z+1) eps=0.50: identity ratio spread 5.4e-15 ; min spectral abscissa found over K: -3.7546 | deadbeat L -> K: closed-loop eigenvalues [-1.001+0.j    -1.   +0.001j -1.   -0.001j -0.999+0.j   ]
printed (z+1) eps=0.20: identity ratio spread 1.1e-15 ; min spectral abscissa found over K: +0.4681 | deadbeat L -> K: closed-loop eigenvalues [-1.002+0.002j -1.002-0.002j -0.998+0.002j -0.998-0.002j]
printed (z+1) eps=0.10: identity ratio spread 3.9e-15 ; min spectral abscissa found over K: +0.7989 | deadbeat L -> K: closed-loop eigenvalues [-1.005+0.j    -1.   +0.005j -1.   -0.005j -0.995+0.j   ]
printed (z+1) eps=0.05: identity ratio spread 1.5e-15 ; min spectral abscissa found over K: +0.8688 | deadbeat L -> K: closed-loop eigenvalues [-1.016+0.016j -1.016-0.016j -0.984+0.015j -0.984-0.015j]
corrected (z-1) eps=1.00: identity ratio spread 3.0e-15 ; min spectral abscissa found over K: -0.3361
corrected (z-1) eps=0.50: identity ratio spread 3.3e-15 ; min spectral abscissa found over K: -0.0610
corrected (z-1) eps=0.20: identity ratio spread 8.5e-16 ; min spectral abscissa found over K: +0.3541
corrected (z-1) eps=0.10: identity ratio spread 1.6e-15 ; min spectral abscissa found over K: +0.5740
corrected (z-1) eps=0.05: identity ratio spread 8.0e-16 ; min spectral abscissa found over K: +0.7775
