0.041 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.030 * * * [progress]: [2/2] Setting up program.
0.032 * [progress]: [Phase 2 of 3] Improving.
0.032 * [simplify]: Simplifying:
  (/ (* 4.0 (- (- x y) (* z 0.5))) z)
0.032 * [simplify]: Sending expressions to egg_math:
 (/ (* 4.0 (- (- h2 h1) (* h0 (/ 1.0 2.0)))) h0)