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