0.085 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.092 * * * [progress]: [2/2] Setting up program.
0.100 * [progress]: [Phase 2 of 3] Improving.
0.100 * [simplify]: Simplifying:
  (/ (exp (* x (log (/ x (+ x y))))) x)