4.650 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.025 * [progress]: [Phase 2 of 3] Improving.
0.025 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ 1.0 (- (pow x 2.0) (pow y 2.0)))
0.027 * * [simplify]: iteration  0 :  16  enodes  (cost  4 )
0.028 * * [simplify]: iteration  1 :  31  enodes  (cost  4 )
0.029 * * [simplify]: iteration  2 :  72  enodes  (cost  4 )
0.031 * * [simplify]: iteration  3 :  212  enodes  (cost  4 )
0.036 * * [simplify]: iteration  4 :  796  enodes  (cost  4 )
0.055 * * [simplify]: iteration  5 :  4038  enodes  (cost  4 )
0.163 * * [simplify]: iteration  6 :  5002  enodes  (cost  4 )
0.163 * [simplify]: Simplified to:
   (/ 1.0 (- (pow x 2.0) (pow y 2.0)))
0.164 * [progress]: [Phase 3 of 3] Extracting.
0.166 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ 1.0 (- (pow x 2.0) (pow y 2.0)))
0.167 * * [simplify]: iteration  0 :  8  enodes  (cost  4 )
0.167 * [simplify]: Simplified to:
   (/ 1.0 (- (pow x 2.0) (pow y 2.0)))
1.092 * [regime-testing]: End program error score: 5.129636842807642