Starting with polynomial:
P : 6435/128*t^8 - 3003/32*t^6 + 3465/64*t^4 - 315/32*t^2 + 35/128
Extension levels are: 8 9
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Trying to find an order 9 Kronrod extension for:
P1 : 6435/128*t^8 - 3003/32*t^6 + 3465/64*t^4 - 315/32*t^2 + 35/128
Solvable: 1
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Ending with final polynomial:
P : 6435/128*t^17 - 517803/2432*t^15 + 1876545/5054*t^13 - 6070696515/17668784*t^11 + 1702074702185/9399793088*t^9 - 145391570181/2685655168*t^7 + 5762999385/671413792*t^5 - 820541865/1342827584*t^3 + 34073955/2685655168*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
  current precision for roots: 212
  current precision for roots: 424
 current precision for weights: 212
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (0.99337987588171615594 + 4.9585652301483508306e-446j)  +/-  (1.07e-122, 1.07e-122j)
| (-0.96028985649753623168 + 8.5715958517426159112e-454j)  +/-  (2.36e-122, 2.36e-122j)
| (-0.89412090684745642195 - 1.7135226950857353063e-465j)  +/-  (1.38e-122, 1.38e-122j)
| (-0.99337987588171615594 + 6.5081267040237198959e-475j)  +/-  (1.04e-122, 1.04e-122j)
| (0.96028985649753623168 + 5.4795225227021499924e-481j)  +/-  (1.9e-122, 1.9e-122j)
| (0.89412090684745642195 + 2.1018680657852339869e-492j)  +/-  (1.5e-122, 1.5e-122j)
| (-0.18343464249564980494 + 1.478556146774424993e-503j)  +/-  (9.1e-127, 9.1e-127j)
| (-0.79666647741362673959 + 4.7048875155038060147e-501j)  +/-  (5.77e-123, 5.77e-123j)
| (-0.36070109792813195719 + 6.8890763277831969159e-503j)  +/-  (1.83e-125, 1.83e-125j)
| (0.36070109792813195719 + 3.262404603942914964e-502j)  +/-  (1.83e-125, 1.83e-125j)
| (0.79666647741362673959 - 4.0345467154965574291e-501j)  +/-  (5.77e-123, 5.77e-123j)
| (0.18343464249564980494 + 1.5272482267446659348e-508j)  +/-  (1e-126, 1e-126j)
| (-0.52553240991632898582 - 3.8195399425370780953e-508j)  +/-  (1.49e-124, 1.49e-124j)
| (-0.67235407094515867716 - 2.3754671303716290971e-507j)  +/-  (1.25e-123, 1.25e-123j)
| (1.0957580214190354105e-508 + 1.4584085064871229071e-508j)  +/-  (3.1e-507, 3.1e-507j)
| (0.67235407094515867716 + 5.9386678259290727427e-508j)  +/-  (1.26e-123, 1.26e-123j)
| (0.52553240991632898582 - 4.7292173061133110033e-516j)  +/-  (1.63e-124, 1.63e-124j)
-------------------------------------------------
The weights are:
| (0.017822383320710355153 - 5.2497137722407250974e-446j)  +/-  (2e-47, 1.53e-106j)
| (0.0494393950021393085 + 1.3144488001854406642e-447j)  +/-  (8.99e-48, 6.85e-107j)
| (0.082482298931358330689 - 2.1668550066428987733e-447j)  +/-  (5.79e-48, 4.41e-107j)
| (0.017822383320710355153 - 4.4481152093556865606e-448j)  +/-  (2.98e-48, 2.27e-107j)
| (0.0494393950021393085 + 7.7606432435902096831e-446j)  +/-  (1.27e-48, 9.71e-108j)
| (0.082482298931358330689 - 4.1204725771817182938e-446j)  +/-  (5.76e-49, 4.39e-108j)
| (0.18140002506803464306 + 7.6384795495103220309e-447j)  +/-  (1.2e-49, 9.15e-109j)
| (0.11164637082683961322 + 3.0674353820414014808e-447j)  +/-  (1.53e-49, 1.17e-108j)
| (0.17207060855521131186 - 6.301125154349360087e-447j)  +/-  (1.03e-49, 7.83e-109j)
| (0.17207060855521131186 - 1.3485885305266990321e-446j)  +/-  (9.4e-51, 7.15e-110j)
| (0.11164637082683961322 + 2.7912946353488085135e-446j)  +/-  (7.97e-51, 6.08e-110j)
| (0.18140002506803464306 + 1.1098372015785057937e-446j)  +/-  (9.05e-51, 6.89e-110j)
| (0.15665260616818840049 + 5.1271080808204052628e-447j)  +/-  (8.74e-51, 6.66e-110j)
| (0.13626310925517221526 - 4.0562875091510357081e-447j)  +/-  (6.22e-51, 4.75e-110j)
| (0.18444640574469164353 - 9.2068459626527872676e-447j)  +/-  (5.08e-51, 3.86e-110j)
| (0.13626310925517221526 - 2.1047202670531337911e-446j)  +/-  (4.52e-52, 3.5e-111j)
| (0.15665260616818840049 + 1.6645654006021603294e-446j)  +/-  (5.38e-52, 4.02e-111j)
