0.283 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.248 * * * [progress]: [2/2] Setting up program.
0.253 * [progress]: [Phase 2 of 3] Improving.
0.253 * [simplify]: Simplifying:
  (- (+ (* (- x 1.0) (log y)) (* (- z 1.0) (log (- 1.0 y)))) t)