0.059 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.348 * * * [progress]: [2/2] Setting up program.
0.362 * [progress]: [Phase 2 of 3] Improving.
0.362 * [simplify]: Simplifying:
  (* x (exp (+ (* y (- (log z) t)) (* a (- (log (- 1.0 z)) b)))))