9.090 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.086 * * * [progress]: [2/2] Setting up program.
0.089 * [progress]: [Phase 2 of 3] Improving.
0.089 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.203 * * [simplify]: iteration  0 :  5135  enodes  (cost  7 )
0.204 * [simplify]: Simplified to:
   (- (* x x) (* y y))
0.206 * * [progress]: iteration 1 / 4
0.206 * * * [progress]: picking best candidate
0.208 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
0.209 * * * [progress]: localizing error
0.213 * * * [progress]: generating rewritten candidates
0.213 * * * [progress]: generating series expansions
0.213 * * * [progress]: simplifying candidates
0.213 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.216 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.216 * [simplify]: Simplified to:
   
0.216 * * * [progress]: adding candidates to table
0.216 * [progress]: [Phase 3 of 3] Extracting.
0.218 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.219 * * [simplify]: iteration  0 :  17  enodes  (cost  7 )
0.219 * * [simplify]: iteration  1 :  17  enodes  (cost  7 )
0.219 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
0.713 * [regime-testing]: End program error score: 0.0008751093886735842