Lotka-Volterra 2d (symmetric Lagrangian) with Gauss-Legendre VPRK Integrators
GLRK1
DOMAIN ERROR: Simulation crashed in time step 85. 
GLRK2
DOMAIN ERROR: Simulation crashed in time step 131. 
GLRK3
DOMAIN ERROR: Simulation crashed in time step 210. 
GLRK4
DOMAIN ERROR: Simulation crashed in time step 291. 
GLRK5
DOMAIN ERROR: Simulation crashed in time step 379. 
GLRK6
DOMAIN ERROR: Simulation crashed in time step 499. 