final double step = solver.solve(lsf, 0, findUpperBound(lsf, 0, initialStep));
final double step = solver.solve(lsf, 0, findUpperBound(lsf, 0, initialStep));
final double step = solver.solve(lsf, 0, findUpperBound(lsf, 0, initialStep));
final double step = solver.solve(lsf, 0, findUpperBound(lsf, 0, initialStep));