1.533 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.012 * [progress]: [Phase 2 of 3] Improving.
0.013 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (- y x) 2.0))
0.013 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.014 * * [simplify]: iteration  1 :  12  enodes  (cost  7 )
0.016 * * [simplify]: iteration  2 :  19  enodes  (cost  7 )
0.017 * * [simplify]: iteration  3 :  28  enodes  (cost  7 )
0.020 * * [simplify]: iteration  4 :  38  enodes  (cost  7 )
0.024 * * [simplify]: iteration  5 :  47  enodes  (cost  7 )
0.029 * * [simplify]: iteration  6 :  53  enodes  (cost  7 )
0.034 * * [simplify]: iteration  7 :  62  enodes  (cost  7 )
0.040 * * [simplify]: iteration  8 :  78  enodes  (cost  7 )
0.048 * * [simplify]: iteration  9 :  98  enodes  (cost  7 )
0.060 * * [simplify]: iteration  10 :  108  enodes  (cost  7 )
0.071 * * [simplify]: iteration  11 :  113  enodes  (cost  7 )
0.082 * * [simplify]: iteration  done :  113  enodes  (cost  7 )
0.082 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.082 * * [progress]: iteration 1 / 4
0.082 * * * [progress]: picking best candidate
0.084 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
0.084 * * * [progress]: localizing error
0.088 * * * [progress]: generating rewritten candidates
0.088 * * * [progress]: generating series expansions
0.088 * * * [progress]: simplifying candidates
0.088 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   
0.089 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.089 * * [simplify]: iteration  done :  0  enodes  (cost  0 )
0.089 * [simplify]: Simplified to:
   
0.089 * * * [progress]: adding candidates to table
0.089 * [progress]: [Phase 3 of 3] Extracting.
0.091 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ x (/ (- y x) 2.0))
0.091 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.091 * * [simplify]: iteration  1 :  7  enodes  (cost  7 )
0.091 * * [simplify]: iteration  done :  7  enodes  (cost  7 )
0.091 * [simplify]: Simplified to:
   (+ x (/ (- y x) 2.0))
0.410 * [regime-testing]: End program error score: 0.016617678772797323
0.427 * [regime-testing]: Target error score: 0