0.082 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.297 * * * [progress]: [2/2] Setting up program.
0.312 * [progress]: [Phase 2 of 3] Improving.
0.313 * [simplify]: Simplifying:
  (/ (* x (exp (- (+ (* y (log z)) (* (- t 1.0) (log a))) b))) y)