2.770 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.025 * * * [progress]: [2/2] Setting up program.
0.027 * [progress]: [Phase 2 of 3] Improving.
0.027 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* a a) (* b b))
0.028 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.029 * * [simplify]: iteration  1 :  10  enodes  (cost  7 )
0.030 * * [simplify]: iteration  2 :  17  enodes  (cost  7 )
0.032 * * [simplify]: iteration  3 :  32  enodes  (cost  7 )
0.037 * * [simplify]: iteration  4 :  57  enodes  (cost  7 )
0.045 * * [simplify]: iteration  5 :  98  enodes  (cost  7 )
0.061 * * [simplify]: iteration  6 :  163  enodes  (cost  7 )
0.091 * * [simplify]: iteration  7 :  331  enodes  (cost  7 )
0.208 * * [simplify]: iteration  8 :  1623  enodes  (cost  7 )
0.782 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
0.782 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
0.785 * * [progress]: iteration 1 / 4
0.785 * * * [progress]: picking best candidate
0.787 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
0.787 * * * [progress]: localizing error
0.792 * * * [progress]: generating rewritten candidates
0.792 * * * [progress]: generating series expansions
0.792 * * * [progress]: simplifying candidates
0.792 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
0.793 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.793 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
0.793 * [simplify]: Simplified to:
   
0.793 * * * [progress]: adding candidates to table
0.793 * [progress]: [Phase 3 of 3] Extracting.
0.795 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- a b) (+ a b))
0.795 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.796 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
0.796 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
0.796 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
1.753 * [regime-testing]: End program error score: 0.0007500937617202151
1.817 * [regime-testing]: Target error score: 0.0007500937617202151