ALL PASS
midpoint 2/5 B = 5/8 completable
endpoint x11 = 1/200 B = 441/200 >1 coordinate sum 41/200
endpoint x11 = 159/200 B = 32041/31800 >1 coordinate sum 199/200
completion at midpoint: a = (Fraction(4, 5), Fraction(1, 5)) b = (Fraction(1, 2), Fraction(1, 8), Fraction(3, 8))
oracle residual at x11 = 1/200 : 5.694e-05
oracle residual at x11 = 159/200 : 1.642e-05
oracle residual at x11 = 2/5 : 1.938e-19
