0.432 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.314 * * * [progress]: [2/2] Setting up program.
0.318 * [progress]: [Phase 2 of 3] Improving.
0.318 * [simplify]: Simplifying:
  (+ x (- (tan (+ y z)) (tan a)))