19.906 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.087 * * * [progress]: [2/2] Setting up program.
0.089 * [progress]: [Phase 2 of 3] Improving.
0.089 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* a a) (* b b))
0.226 * * [simplify]: iteration  0 :  6509  enodes  (cost  7 )
0.227 * [simplify]: Simplified to:
   (- (* a a) (* b b))
0.230 * * [progress]: iteration 1 / 4
0.230 * * * [progress]: picking best candidate
0.232 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
0.232 * * * [progress]: localizing error
0.236 * * * [progress]: generating rewritten candidates
0.237 * * * [progress]: generating series expansions
0.237 * * * [progress]: simplifying candidates
0.237 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.239 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.239 * [simplify]: Simplified to:
   
0.239 * * * [progress]: adding candidates to table
0.239 * [progress]: [Phase 3 of 3] Extracting.
0.242 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* a a) (* b b))
0.243 * * [simplify]: iteration  0 :  23  enodes  (cost  7 )
0.243 * * [simplify]: iteration  1 :  23  enodes  (cost  7 )
0.243 * [simplify]: Simplified to:
   (- (* a a) (* b b))
0.735 * [regime-testing]: End program error score: 0.004448676397139788
0.796 * [regime-testing]: Target error score: 0.0005000625078134767