positive control (4,4): planted Xi: |c_0..c_15|/|c_16| = 1.52e-13
   100 starts: smallest costs ['3.56e-30', '6.57e-30', '1.60e-11', '1.58e-09', '2.34e-08', '2.34e-08'] ; #(cost<1e-20) = 2 ; time 63 s
(4,4) Gaussian curve 0: 100 starts: smallest costs ['6.46e-06', '1.74e-04', '1.74e-04', '4.79e-04', '4.79e-04', '1.41e-03'] ; #(cost<1e-20) = 0 ; best re-polished 6.461320e-06, grad 4.0e-09, smallest sing. values of J: ['1.6e+01', '2.2e+00', '1.2e-06'] ; 20 s
