17.607 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.024 * * * [progress]: [2/2] Setting up program.
0.027 * [progress]: [Phase 2 of 3] Improving.
0.027 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* y y))
0.027 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.028 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.029 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.031 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.036 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.046 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.072 * * [simplify]: iteration  6 :  156  enodes  (cost  7 )
0.123 * * [simplify]: iteration  7 :  324  enodes  (cost  7 )
0.773 * * [simplify]: iteration  8 :  1576  enodes  (cost  7 )
6.850 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
6.850 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
6.853 * * [progress]: iteration 1 / 4
6.854 * * * [progress]: picking best candidate
6.855 * * * * [pick]: Picked  #<alt (λ (x y) (* (- x y) (+ x y)))>
6.855 * * * [progress]: localizing error
6.863 * * * [progress]: generating rewritten candidates
6.863 * * * [progress]: generating series expansions
6.863 * * * [progress]: simplifying candidates
6.864 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
6.864 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
6.864 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
6.864 * [simplify]: Simplified to:
   
6.864 * * * [progress]: adding candidates to table
6.864 * [progress]: [Phase 3 of 3] Extracting.
6.867 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- x y) (+ x y))
6.867 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
6.867 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
6.867 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
6.867 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
7.795 * [regime-testing]: End program error score: 0.0007500937617202151