0.041 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.062 * * * [progress]: [2/2] Setting up program.
0.177 * [progress]: [Phase 2 of 3] Improving.
0.178 * [simplify]: Simplifying:
  (sqrt (fabs (- x y)))