0.018 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.015 * * * [progress]: [2/2] Setting up program.
0.017 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying:
  (/ (- x y) (- 2.0 (+ x y)))
0.018 * [simplify]: Sending expressions to egg_math:
 (/ (- h1 h0) (- 2.0 (+ h1 h0)))