4.968 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.018 * * * [progress]: [2/2] Setting up program.
0.021 * [progress]: [Phase 2 of 3] Improving.
0.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (- a b) (- c d))
0.023 * * [simplify]: iteration  0 :  14  enodes  (cost  3 )
0.025 * * [simplify]: iteration  1 :  18  enodes  (cost  3 )
0.026 * * [simplify]: iteration  2 :  20  enodes  (cost  3 )
0.026 * * [simplify]: iteration  3 :  20  enodes  (cost  3 )
0.027 * [simplify]: Simplified to:
   (/ (- a b) (- c d))
0.027 * [progress]: [Phase 3 of 3] Extracting.
0.030 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (- a b) (- c d))
0.030 * * [simplify]: iteration  0 :  7  enodes  (cost  3 )
0.030 * [simplify]: Simplified to:
   (/ (- a b) (- c d))
0.890 * [regime-testing]: End program error score: 0.02125265658207276