0.127 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.401 * * * [progress]: [2/2] Setting up program.
0.406 * [progress]: [Phase 2 of 3] Improving.
0.406 * [simplify]: Simplifying:
  (- (/ 1.0 x) (/ 1.0 (tan x)))