Tue May 20 22:43:05 2025 tough_ode_test(): python version: 3.10.12 numpy version: 1.26.4 Solve tough_ode(). parameters: t0 = 0.0 y0 = [1. 1. 1. 1.] tstop = 3.0 tough_solve_ivp(): Solve tough_ode() using solve_ivp(). sol.status = -1 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.9437734065497D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.9437734065497D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.4718867032748D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.4718867032748D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.9437734065497D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.9437734065497D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.2359433516374D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.2359433516374D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.2924337562716D-17 lsoda-- warning..internal t (=r1) and h (=r2) are such that in the machine, t + h = t on the next step (h = step size). solver will continue anyway in above, r1 = 0.1985399847400D+00 r2 = 0.7310843906790D-18 lsoda-- above warning has been issued i1 times. it will not be issued again for this problem in above message, i1 = 10 lsoda-- at t (=r1), too much accuracy requested for precision of machine.. see tolsf (=r2) in above, r1 = 0.1985399847400D+00 r2 = NaN