Starting with polynomial:
P : -t+1
Extension levels are: 1 7
-------------------------------------------------
Trying to find an order 7 Kronrod extension for:
P1 : -t+1
Solvable: 1
-------------------------------------------------
Ending with final polynomial:
P : -t^8 + 19265/204*t^7 - 624113/204*t^6 + 1552467/34*t^5 - 11604425/34*t^4 + 21609490/17*t^3 - 36977850/17*t^2 + 23737980/17*t - 3293220/17
-------------------------------------------------
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
-------------------------------------------------
The nodes are:
| (18.75251539166561618 + 1.5905613560981500367e-51j)  +/-  (1.29e-50, 1.29e-50j)
| (46.925435925679186168 - 1.9234284409937586193e-58j)  +/-  (1.55e-57, 1.55e-57j)
| (12.35199612685986194 - 3.2359896078147878237e-61j)  +/-  (1.55e-59, 1.55e-59j)
| (7.9509208918881512072 + 1.7068768103323251639e-67j)  +/-  (8.35e-60, 8.35e-60j)
| (1 + 1.0952425019310141659e-73j)  +/-  (7.1e-62, 7.1e-62j)
| (2.5000206754193299535 - 9.3149978868365853744e-83j)  +/-  (6.15e-61, 6.15e-61j)
| (4.7673099177671066141 - 2.0510679483514782909e-93j)  +/-  (2.75e-60, 2.75e-60j)
| (0.18807558052466950658 + 5.9407391807983284519e-101j)  +/-  (2.21e-63, 2.21e-63j)
-------------------------------------------------
The weights are:
| (5.7687476475340704087e-08 - 4.1891032588518249168e-59j)  +/-  (1.19e-28, 1.02e-49j)
| (1.1414772815362815237e-15 - 3.1137248876834343648e-63j)  +/-  (1.01e-31, 8.7e-53j)
| (2.2429609219043039391e-05 + 2.0814165601207445905e-58j)  +/-  (8.87e-28, 7.62e-49j)
| (0.0013112218161578048114 - 7.1438248750026441519e-58j)  +/-  (3.29e-27, 2.83e-48j)
| (0.4218508636893898486 + 2.554851673768660415e-57j)  +/-  (6.42e-26, 5.15e-47j)
| (0.15317411483171853001 - 2.7017972036970573423e-57j)  +/-  (2.45e-26, 2.11e-47j)
| (0.022892592003574634765 + 1.7190550963372385688e-57j)  +/-  (7.33e-27, 6.3e-48j)
| (0.40074872036246252196 - 1.0239745886072457527e-57j)  +/-  (3.51e-26, 2.64e-47j)
