0.066 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.369 * * * [progress]: [2/2] Setting up program.
0.373 * [progress]: [Phase 2 of 3] Improving.
0.373 * [simplify]: Simplifying:
  (- (atan (+ N 1.0)) (atan N))
0.373 * [simplify]: Sending expressions to egg_math:
 (- (atan (+ h0 1.0)) (atan h0))