Starting with polynomial:
P : 2*t
Extension levels are: 1 2
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Trying to find an order 2 Kronrod extension for:
P1 : 2*t
Solvable: 1
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Ending with final polynomial:
P : 2*t^3 - 1*t
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Computing nodes and weights
  current precision for roots: 53
  current precision for roots: 106
  current precision for roots: 212
 current precision for weights: 53
Linear system for weights solvable: 1
  current precision for roots: 106
  current precision for roots: 212
  current precision for roots: 424
 current precision for weights: 106
Linear system for weights solvable: 1
Sufficient bits for target precision reached
Positive weights:   3 out of 3
Indefinite weights: 0 out of 3
Negative weights:   0 out of 3
Extension rule has valid weights: 1
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The nodes are:
| (0.7071067811865475244 + 7.1774793961175676651e-145j)  +/-  (7.34e-128, 7.34e-128j)
| (1.7592245407934310422e-190 - 3.5099703798916331528e-192j)  +/-  (5.28e-190, 5.28e-190j)
| (-0.7071067811865475244 + 0j)  +/-  (7.34e-128, 7.34e-128j)
-------------------------------------------------
The weights are:
| (0.125 - 1.9032166323080468183e-145j)  +/-  (5.16e-31, 8.05e-127j)
| (0.25 + 2.537622176410729091e-145j)  +/-  (3.64e-31, 5.71e-127j)
| (0.125 - 6.3440554410268227275e-146j)  +/-  (1.52e-31, 2.34e-127j)
