Starting with polynomial:
P : 5/2*t^3 - 3/2*t
Extension levels are: 3 18
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Trying to find an order 18 Kronrod extension for:
P1 : 5/2*t^3 - 3/2*t
Solvable: 1
-------------------------------------------------
Ending with final polynomial:
P : 5/2*t^21 - 492974097/38114128*t^19 + 1092720951/38114128*t^17 - 62676676797/1762778420*t^15 + 104814789093/3878112524*t^13 - 239868945099/18495613576*t^11 + 190151996979/48761163064*t^9 - 17182210131/24380581532*t^7 + 42668603943/609514538300*t^5 - 107290416779/33645202514160*t^3 + 479989951/11215067504720*t
-------------------------------------------------
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
-------------------------------------------------
The nodes are:
| (-0.9940396115810441603 - 4.8501188149371112414e-400j)  +/-  (2.14e-121, 2.14e-121j)
| (0.96863851499355040942 - 6.1244042841897038825e-407j)  +/-  (5.48e-121, 5.48e-121j)
| (-0.92316618973895636051 + 4.3531229245813980951e-417j)  +/-  (5.13e-121, 5.13e-121j)
| (-0.14788136810434884046 + 2.0817499066206244176e-419j)  +/-  (9.38e-127, 9.38e-127j)
| (0.92316618973895636051 - 1.3622059889217174905e-419j)  +/-  (4.71e-121, 4.71e-121j)
| (0.67401253888417823604 + 9.7032203319782019486e-425j)  +/-  (1.47e-122, 1.47e-122j)
| (0.9940396115810441603 - 2.3094315396309246744e-426j)  +/-  (2.32e-121, 2.32e-121j)
| (-0.85815313192946415361 + 4.151193624173117076e-431j)  +/-  (2.18e-121, 2.18e-121j)
| (-0.55841853871864983226 - 3.6784198469231076979e-434j)  +/-  (2.47e-123, 2.47e-123j)
| (0.55841853871864983226 - 1.1521886915546963579e-432j)  +/-  (2.33e-123, 2.33e-123j)
| (0.85815313192946415361 - 5.9321171974530314664e-438j)  +/-  (2.62e-121, 2.62e-121j)
| (0.14788136810434884046 + 5.7409510992865329352e-445j)  +/-  (9.38e-127, 9.38e-127j)
| (-0.43027365915780572809 - 3.3351711167361665143e-446j)  +/-  (2.08e-124, 2.08e-124j)
| (-0.77459666924148337704 - 5.8862662553941601568e-446j)  +/-  (7.82e-122, 7.82e-122j)
| (8.2875664727651705674e-450 + 2.798801017410149241e-447j)  +/-  (5.88e-446, 5.88e-446j)
| (0.77459666924148337704 + 8.1716725150856535934e-451j)  +/-  (8.71e-122, 8.71e-122j)
| (0.43027365915780572809 - 1.450715832912460553e-455j)  +/-  (2.57e-124, 2.57e-124j)
| (-0.96863851499355040942 - 3.5981194400920433781e-456j)  +/-  (4.87e-121, 4.87e-121j)
| (-0.67401253888417823604 - 1.7160354792298097709e-460j)  +/-  (1.49e-122, 1.49e-122j)
| (-0.29239730601748887918 + 1.0706356476560394574e-462j)  +/-  (1.69e-125, 1.69e-125j)
| (0.29239730601748887918 - 4.0775503490099371084e-471j)  +/-  (1.69e-125, 1.69e-125j)
-------------------------------------------------
The weights are:
| (0.015291840277723014901 - 6.1143064193731054908e-400j)  +/-  (1.62e-46, 2.47e-104j)
| (0.035490755351857458095 + 1.2744115520808912083e-401j)  +/-  (5.6e-47, 8.53e-105j)
| (0.055367125232500208795 - 6.5087913410833987963e-400j)  +/-  (4.28e-47, 6.52e-105j)
| (0.14675499170995396802 + 1.6747274813175279187e-400j)  +/-  (7.73e-48, 1.18e-105j)
| (0.055367125232500208795 - 2.4061162486313251945e-401j)  +/-  (2.85e-47, 4.35e-105j)
| (0.10846462230386839226 + 6.2603863062599229882e-401j)  +/-  (7.26e-48, 1.11e-105j)
| (0.015291840277723014901 - 3.7305725514278854322e-402j)  +/-  (1.07e-47, 1.63e-105j)
| (0.0744936852448249456 + 4.9696866139191420643e-400j)  +/-  (1.05e-48, 1.61e-106j)
| (0.12231217207212463331 - 2.7201490824781796847e-400j)  +/-  (6.76e-49, 1.03e-106j)
| (0.12231217207212463331 - 7.6327637028234593931e-401j)  +/-  (2.12e-48, 3.22e-106j)
| (0.0744936852448249456 + 3.6460255053935561048e-401j)  +/-  (4e-48, 6.09e-106j)
| (0.14675499170995396802 + 1.2409655020878020324e-400j)  +/-  (3.34e-49, 5.1e-107j)
| (0.13350621081956087845 + 2.2949973745702045266e-400j)  +/-  (1.69e-49, 2.6e-107j)
| (0.09236626392075145478 - 3.9781163535982783492e-400j)  +/-  (4.63e-50, 7.16e-108j)
| (0.14844531756757397745 - 1.4409644394573545437e-400j)  +/-  (2.01e-49, 3.03e-107j)
| (0.09236626392075145478 - 4.9358381311823123693e-401j)  +/-  (2.07e-49, 3.13e-107j)
| (0.13350621081956087845 + 9.0839681088017170699e-401j)  +/-  (8.45e-50, 1.29e-107j)
| (0.035490755351857458095 + 9.8470294306416585367e-400j)  +/-  (7.2e-51, 1.13e-108j)
| (0.10846462230386839226 + 3.2630507762905934973e-400j)  +/-  (2.53e-50, 3.97e-108j)
| (0.14172967428304805707 - 1.9540580067300859021e-400j)  +/-  (2e-50, 3.24e-108j)
| (0.14172967428304805707 - 1.0657731495821459961e-400j)  +/-  (1.64e-50, 2.21e-108j)
