2.020 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.026 * * * [progress]: [2/2] Setting up program.
0.028 * [progress]: [Phase 2 of 3] Improving.
0.028 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* y y))
0.029 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.030 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.031 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.033 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.039 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.050 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.081 * * [simplify]: iteration  6 :  156  enodes  (cost  7 )
0.137 * * [simplify]: iteration  7 :  324  enodes  (cost  7 )
0.866 * * [simplify]: iteration  8 :  1576  enodes  (cost  7 )
7.641 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
7.641 * [simplify]: Simplified to:
   (* (- x y) (+ x y))
7.644 * * [progress]: iteration 1 / 4
7.644 * * * [progress]: picking best candidate
7.646 * * * * [pick]: Picked  #<alt (λ (x y) (- (* x x) (* y y)))>
7.646 * * * [progress]: localizing error
7.651 * * * [progress]: generating rewritten candidates
7.651 * * * [progress]: generating series expansions
7.651 * * * [progress]: simplifying candidates
7.651 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
7.651 * [simplify]: Simplified to:
   
7.651 * * * [progress]: adding candidates to table
7.651 * [progress]: [Phase 3 of 3] Extracting.
7.653 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* y y))
7.653 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
7.654 * * [simplify]: iteration  done :  5  enodes  (cost  7 )
7.654 * [simplify]: Simplified to:
   (- (* x x) (* y y))
8.650 * [regime-testing]: End program error score: 0.0075009376172021506