8.726 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.017 * * * [progress]: [2/2] Setting up program.
0.019 * [progress]: [Phase 2 of 3] Improving.
0.019 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* a a) (* b b))
0.020 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
0.021 * * [simplify]: iteration  1 :  11  enodes  (cost  7 )
0.022 * * [simplify]: iteration  2 :  18  enodes  (cost  7 )
0.024 * * [simplify]: iteration  3 :  35  enodes  (cost  7 )
0.030 * * [simplify]: iteration  4 :  66  enodes  (cost  7 )
0.046 * * [simplify]: iteration  5 :  123  enodes  (cost  7 )
0.074 * * [simplify]: iteration  6 :  227  enodes  (cost  7 )
0.153 * * [simplify]: iteration  7 :  449  enodes  (cost  7 )
0.960 * * [simplify]: iteration  8 :  1866  enodes  (cost  7 )
5.674 * * [simplify]: iteration  done :  5000  enodes  (cost  7 )
5.675 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
5.677 * * [progress]: iteration 1 / 4
5.677 * * * [progress]: picking best candidate
5.678 * * * * [pick]: Picked  #<alt (λ (a b) (* (- a b) (+ a b)))>
5.678 * * * [progress]: localizing error
5.682 * * * [progress]: generating rewritten candidates
5.682 * * * [progress]: generating series expansions
5.682 * * * [progress]: simplifying candidates
5.682 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
5.683 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
5.683 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
5.683 * [simplify]: Simplified to:
   
5.683 * * * [progress]: adding candidates to table
5.683 * [progress]: [Phase 3 of 3] Extracting.
5.685 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- a b) (+ a b))
5.685 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
5.685 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
5.685 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
5.685 * [simplify]: Simplified to:
   (* (- a b) (+ a b))
6.203 * [regime-testing]: End program error score: 0.0007500937617202151
6.221 * [regime-testing]: Target error score: 0.0007500937617202151