0.438 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.735 * * * [progress]: [2/2] Setting up program.
0.749 * [progress]: [Phase 2 of 3] Improving.
0.753 * [simplify]: Simplifying:
  (- (* PI l) (* (/ 1.0 (* F F)) (tan (* PI l))))