8.103 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.023 * * * [progress]: [2/2] Setting up program.
0.025 * [progress]: [Phase 2 of 3] Improving.
0.025 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (+ x y) (- x y))
0.026 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.027 * * [simplify]: iteration  1 :  9  enodes  (cost  7 )
0.028 * * [simplify]: iteration  2 :  24  enodes  (cost  7 )
0.032 * * [simplify]: iteration  3 :  52  enodes  (cost  7 )
0.041 * * [simplify]: iteration  4 :  93  enodes  (cost  7 )
0.063 * * [simplify]: iteration  5 :  146  enodes  (cost  7 )
0.098 * * [simplify]: iteration  6 :  211  enodes  (cost  7 )
0.163 * * [simplify]: iteration  7 :  323  enodes  (cost  7 )
0.523 * * [simplify]: iteration  8 :  942  enodes  (cost  7 )
3.855 * * [simplify]: iteration  9 :  3249  enodes  (cost  7 )
6.513 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
6.513 * [simplify]: Simplified to:
   (- (* x x) (* y y))
6.515 * * [progress]: iteration 1 / 4
6.515 * * * [progress]: picking best candidate
6.517 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) (- x y)))>
6.517 * * * [progress]: localizing error
6.522 * * * [progress]: generating rewritten candidates
6.522 * * * [progress]: generating series expansions
6.522 * * * [progress]: simplifying candidates
6.522 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
6.523 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
6.523 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
6.523 * [simplify]: Simplified to:
   
6.523 * * * [progress]: adding candidates to table
6.523 * [progress]: [Phase 3 of 3] Extracting.
6.525 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (+ x y) (- x y))
6.525 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
6.525 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
6.526 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
6.526 * [simplify]: Simplified to:
   (* (+ x y) (- x y))
7.414 * [regime-testing]: End program error score: 0.0007500937617202151