13.647 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* y y))
0.019 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.020 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.021 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.025 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.030 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.038 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.055 * * [simplify]: iteration  6 :  156  enodes  (cost  7 )
0.086 * * [simplify]: iteration  7 :  324  enodes  (cost  7 )
0.291 * * [simplify]: iteration  8 :  1579  enodes  (cost  7 )
3.629 * * [simplify]: iteration  done :  5001  enodes  (cost  7 )
3.629 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
3.631 * * [progress]: iteration 1 / 4
3.632 * * * [progress]: picking best candidate
3.633 * * * * [pick]: Picked  #<alt (λ (x y) (* (- x y) (+ x y)))>
3.633 * * * [progress]: localizing error
3.637 * * * [progress]: generating rewritten candidates
3.637 * * * [progress]: generating series expansions
3.637 * * * [progress]: simplifying candidates
3.637 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
3.638 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
3.638 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
3.638 * [simplify]: Simplified to:
   
3.638 * * * [progress]: adding candidates to table
3.638 * [progress]: [Phase 3 of 3] Extracting.
3.640 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- x y) (+ x y))
3.640 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
3.640 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
3.640 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
3.640 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
4.177 * [regime-testing]: End program error score: 0.0008751093886735842