m=3 k=26 wrong=False : 26 parameters
cubics: 104
(1) smoothness: min over cubics of the smallest singular value (rank-15 test): 0.024231
(2) every cubic passes through exactly the 9 vertices of its Lambda_t: True
(3) at each vertex: 3k = 78 cubics, k = 26 tangent directions, each shared by exactly 3 cubics of 3 distinct pencils: True
    time 3.8s
(4) pairs of cubics from different pencils: 4056; with vertex multiplicities as predicted (2 at shared directions, 1 otherwise) and 9 points in total: 4056 ; bad: 0
    histogram ((multiplicities at common vertices), #off-vertex points): count
       ((1, 1, 1, 1, 1, 1), 3) 3168
       ((1, 1, 1, 1, 1, 2), 2) 864
       ((1, 1, 1, 2, 2, 2), 0) 24
    time 280.1s
(5) distinct off-vertex intersection points: 1872 (BHRS: 9k(m^2-1) = 1872)
    number of cubics through a point -> number of points: {4: 1872}
    every point on exactly one cubic of each of the 4 pencils, no near-misses: True
    tangent lines pairwise distinct at every point (ordinary): True ; min |l_a x l_b| = 0.26187
    off-vertex points per cubic -> number of cubics: {72: 104} (BHRS: 9(m^2-1) = 72)
total time 917.5s
