Starting with polynomial:
P : 16*t^4 - 48*t^2 + 12
Extension levels are: 4 5
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Trying to find an order 5 Kronrod extension for:
P1 : 16*t^4 - 48*t^2 + 12
Solvable: 1
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Ending with final polynomial:
P : 16*t^9 - 168*t^7 + 432*t^5 - 270*t^3 + 45*t
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Computing nodes and weights
  current precision for roots: 53
  current precision for roots: 106
 current precision for weights: 53
Linear system for weights solvable: 1
  current precision for roots: 106
  current precision for roots: 212
 current precision for weights: 106
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (2.6384291054842239697 + 8.0614513290805065021e-137j)  +/-  (1.04e-62, 1.04e-62j)
| (-1.6506801238857845559 - 1.0748601772107342003e-137j)  +/-  (1.42e-62, 1.42e-62j)
| (-2.6384291054842239697 + 3.3169513281112500712e-138j)  +/-  (1.04e-62, 1.04e-62j)
| (0.52464762327529031788 - 1.5048042480950278804e-136j)  +/-  (6.07e-63, 6.07e-63j)
| (0.73395630342256598469 + 1.6794690268917721879e-139j)  +/-  (8.2e-63, 8.2e-63j)
| (1.6506801238857845559 - 3.2033329522929614791e-145j)  +/-  (1.42e-62, 1.42e-62j)
| (2.2227587494850774834e-161 - 3.889827811598885596e-162j)  +/-  (2.03e-160, 2.03e-160j)
| (-0.73395630342256598469 + 1.882749894611628217e-183j)  +/-  (1.05e-62, 1.05e-62j)
| (-0.52464762327529031788 + 3.4247021078256297496e-195j)  +/-  (6.07e-63, 6.07e-63j)
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The weights are:
| (0.00059220888055192656046 - 1.7079968786022462905e-139j)  +/-  (8.1e-30, 6.4e-61j)
| (0.033742373970539285842 - 1.1311289364039448033e-138j)  +/-  (1.38e-28, 1.09e-59j)
| (0.00059220888055192656046 - 1.2355462870605717217e-140j)  +/-  (3.66e-30, 2.89e-61j)
| (-0.17742053489007951573 + 6.0888811858458961945e-137j)  +/-  (6.98e-27, 5.45e-58j)
| (0.37641928537232163666 - 8.7295835219025796677e-137j)  +/-  (3.71e-27, 2.91e-58j)
| (0.033742373970539285842 + 1.3243286384439017771e-138j)  +/-  (4.37e-29, 3.47e-60j)
| (0.53333333333333333333 + 3.6885288943717795163e-137j)  +/-  (2.22e-27, 1.73e-58j)
| (0.37641928537232163666 + 1.6531553136722653222e-137j)  +/-  (4.16e-28, 3.2e-59j)
| (-0.17742053489007951573 - 2.701986327118274028e-137j)  +/-  (6.76e-28, 5.25e-59j)
