0.031 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.044 * * * [progress]: [2/2] Setting up program.
0.502 * [progress]: [Phase 2 of 3] Improving.
0.502 * [simplify]: Simplifying:
  (/ (+ (* x y) (* z (- t a))) (+ y (* z (- b y))))