0.296 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.461 * * * [progress]: [2/2] Setting up program.
0.470 * [progress]: [Phase 2 of 3] Improving.
0.470 * [simplify]: Simplifying:
  (+ lambda1 (atan2 (* (cos phi2) (sin (- lambda1 lambda2))) (+ (cos phi1) (* (cos phi2) (cos (- lambda1 lambda2))))))
0.470 * [simplify]: Sending expressions to egg_math:
 (+ h1 (atan2 (* (cos h2) (sin (- h1 h0))) (+ (cos h3) (* (cos h2) (cos (- h1 h0))))))