# Is the time step size of a Rosenbrock method for stiff systems iteratively calculated?

I have an ODE system of the general form

  y' = k(y)(x) + q(z)(x)
x' = a(z)(x) + b(x)(x)


where k,q,a and b are also dependent on the states x and y. The solver(ODEINT) is throwing the error: "Max number of iterations exceeded. A new step size was not found". I am using the Rosenbrock method on a stiff system. Is the step size for Rosenbrock method iteratively calculated? If so, what parameters should I look to adjust to prevent this isssue?