7.289 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.020 * * * [progress]: [2/2] Setting up program.
0.022 * [progress]: [Phase 2 of 3] Improving.
0.023 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* y y))
0.023 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.024 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.026 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.028 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.033 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.043 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.063 * * [simplify]: iteration  6 :  156  enodes  (cost  7 )
0.108 * * [simplify]: iteration  7 :  324  enodes  (cost  7 )
0.672 * * [simplify]: iteration  8 :  1572  enodes  (cost  7 )
6.008 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
6.009 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
6.012 * * [progress]: iteration 1 / 4
6.012 * * * [progress]: picking best candidate
6.013 * * * * [pick]: Picked  #<alt (λ (x y) (* (- x y) (+ x y)))>
6.013 * * * [progress]: localizing error
6.018 * * * [progress]: generating rewritten candidates
6.018 * * * [progress]: generating series expansions
6.018 * * * [progress]: simplifying candidates
6.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
6.019 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
6.019 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
6.019 * [simplify]: Simplified to:
   
6.019 * * * [progress]: adding candidates to table
6.019 * [progress]: [Phase 3 of 3] Extracting.
6.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- x y) (+ x y))
6.021 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
6.021 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
6.022 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
6.022 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
6.550 * [regime-testing]: End program error score: 0.0007500937617202151