How do I fix Warning: Output Truncated?

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Below is my code step by step for using Euler's Method to approximate a solution of a system. It will work when n = 10, but not when n = 100 or 1000. How can I fix it so that the output isn't truncated. Thanks!

# Define RR to be the real numbers, rounding to the nearest number, with 25 bits of precision
RR = RealField(25,rnd='RNDN')

# Define t,x,y to be numbers in RR
t,x,y = PolynomialRing(RR,3,"txy").gens()

# Define the system of equations
firsteq = y

secondeq = -x - x^3/6 + x^5/120 - x^7/5040 + x^9/362880

# Define parameters
t0 = 0 

x0 = 0

y0 = 2

h = 1/4

n = 10

t1 = t0 + n*h


# Plot the x(t) and y(t) graphs
eulers_method_2x2_plot(firsteq , secondeq, t0, x0, y0, h, t1)