0.033 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.876 * * * [progress]: [2/2] Setting up program.
0.883 * [progress]: [Phase 2 of 3] Improving.
0.884 * [simplify]: Simplifying:
  (+ (+ (+ (- (sqrt (+ x 1.0)) (sqrt x)) (- (sqrt (+ y 1.0)) (sqrt y))) (- (sqrt (+ z 1.0)) (sqrt z))) (- (sqrt (+ t 1.0)) (sqrt t)))