4.892 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.023 * [progress]: [Phase 2 of 3] Improving.
0.023 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* a a) (* b b))
0.026 * * [simplify]: iteration  0 :  11  enodes  (cost  3 )
0.027 * * [simplify]: iteration  1 :  18  enodes  (cost  3 )
0.028 * * [simplify]: iteration  2 :  35  enodes  (cost  3 )
0.030 * * [simplify]: iteration  3 :  67  enodes  (cost  3 )
0.031 * * [simplify]: iteration  4 :  163  enodes  (cost  3 )
0.034 * * [simplify]: iteration  5 :  294  enodes  (cost  3 )
0.038 * * [simplify]: iteration  6 :  541  enodes  (cost  3 )
0.047 * * [simplify]: iteration  7 :  2138  enodes  (cost  3 )
0.107 * * [simplify]: iteration  8 :  5001  enodes  (cost  3 )
0.107 * [simplify]: Simplified to:
   (- (* a a) (* b b))
0.108 * * [progress]: iteration 1 / 4
0.108 * * * [progress]: picking best candidate
0.109 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
0.109 * * * [progress]: localizing error
0.113 * * * [progress]: generating rewritten candidates
0.113 * * * [progress]: generating series expansions
0.113 * * * [progress]: simplifying candidates
0.114 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.116 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.116 * [simplify]: Simplified to:
   
0.116 * * * [progress]: adding candidates to table
0.116 * [progress]: [Phase 3 of 3] Extracting.
0.117 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* a a) (* b b))
0.118 * * [simplify]: iteration  0 :  5  enodes  (cost  3 )
0.118 * [simplify]: Simplified to:
   (- (* a a) (* b b))
0.636 * [regime-testing]: End program error score: 0.006750843855481936
0.652 * [regime-testing]: Target error score: 0.0005000625078134767