0.082 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.058 * * * [progress]: [2/2] Setting up program.
0.065 * [progress]: [Phase 2 of 3] Improving.
0.066 * [simplify]: Simplifying:
  (- (- (+ (* x y) (* y y)) (* y z)) (* y y))