0.520 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.049 * * * [progress]: [2/2] Setting up program.
0.054 * [progress]: [Phase 2 of 3] Improving.
0.055 * [simplify]: Simplifying:
  (+ x (* y (/ (- z t) (- a t))))
0.055 * [simplify]: Sending expressions to egg_math:
 (+ h4 (* h3 (/ (- h2 h0) (- h1 h0))))