8.421 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.019 * * * [progress]: [2/2] Setting up program.
0.020 * [progress]: [Phase 2 of 3] Improving.
0.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* y y))
0.022 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.023 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.024 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.026 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.032 * * [simplify]: iteration  4 :  66  enodes  (cost  7 )
0.046 * * [simplify]: iteration  5 :  123  enodes  (cost  7 )
0.078 * * [simplify]: iteration  6 :  227  enodes  (cost  7 )
0.160 * * [simplify]: iteration  7 :  449  enodes  (cost  7 )
0.953 * * [simplify]: iteration  8 :  1873  enodes  (cost  7 )
6.327 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
6.327 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
6.330 * * [progress]: iteration 1 / 4
6.330 * * * [progress]: picking best candidate
6.332 * * * * [pick]: Picked  #<alt (λ (x y) (* (- x y) (+ x y)))>
6.332 * * * [progress]: localizing error
6.337 * * * [progress]: generating rewritten candidates
6.337 * * * [progress]: generating series expansions
6.337 * * * [progress]: simplifying candidates
6.337 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
6.338 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
6.338 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
6.338 * [simplify]: Simplified to:
   
6.338 * * * [progress]: adding candidates to table
6.338 * [progress]: [Phase 3 of 3] Extracting.
6.340 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- x y) (+ x y))
6.340 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
6.341 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
6.341 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
6.341 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
6.882 * [regime-testing]: End program error score: 0.0012501562695336917