7.900 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.075 * * * [progress]: [2/2] Setting up program.
0.081 * [progress]: [Phase 2 of 3] Improving.
0.081 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.184 * * [simplify]: iteration  0 :  5135  enodes  (cost  7 )
0.184 * [simplify]: Simplified to:
   (- (* x x) (* y y))
0.187 * * [progress]: iteration 1 / 4
0.187 * * * [progress]: picking best candidate
0.188 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
0.189 * * * [progress]: localizing error
0.192 * * * [progress]: generating rewritten candidates
0.192 * * * [progress]: generating series expansions
0.192 * * * [progress]: simplifying candidates
0.193 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.195 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.195 * [simplify]: Simplified to:
   
0.195 * * * [progress]: adding candidates to table
0.195 * [progress]: [Phase 3 of 3] Extracting.
0.197 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (* (+ x y) (- x y))
0.198 * * [simplify]: iteration  0 :  17  enodes  (cost  7 )
0.198 * * [simplify]: iteration  1 :  17  enodes  (cost  7 )
0.198 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
0.655 * [regime-testing]: End program error score: 0.0015001875234404302