0.144 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.032 * * * [progress]: [2/2] Setting up program.
0.033 * [progress]: [Phase 2 of 3] Improving.
0.034 * [simplify]: Simplifying:
  (/ (* (- x y) (+ x y)) (+ (* x x) (* y y)))
0.034 * * [simplify]: Extracting # 0 : cost  0
0.034 * * [simplify]: Extracting # 1 : cost  0
0.034 * * [simplify]: Extracting # 2 : cost  0
0.034 * * [simplify]: Extracting # 3 : cost  0
0.034 * * [simplify]: Extracting # 4 : cost  0
0.034 * * [simplify]: Extracting # 5 : cost  0
0.034 * * [simplify]: iteration  0 :  9  enodes  (cost  15 )
0.036 * * [simplify]: Extracting # 0 : cost  0
0.036 * * [simplify]: Extracting # 1 : cost  0
0.036 * * [simplify]: Extracting # 2 : cost  0
0.036 * * [simplify]: iteration  1 :  22  enodes  (cost  15 )
0.040 * * [simplify]: Extracting # 0 : cost  0
0.040 * * [simplify]: Extracting # 1 : cost  0
0.040 * * [simplify]: Extracting # 2 : cost  0
0.040 * * [simplify]: iteration  2 :  48  enodes  (cost  15 )
0.055 * * [simplify]: Extracting # 0 : cost  0
0.055 * * [simplify]: Extracting # 1 : cost  0
0.056 * * [simplify]: Extracting # 2 : cost  0
0.056 * * [simplify]: iteration  3 :  101  enodes  (cost  15 )
0.090 * * [simplify]: Extracting # 0 : cost  0
0.090 * * [simplify]: Extracting # 1 : cost  0
0.090 * * [simplify]: Extracting # 2 : cost  0
0.090 * * [simplify]: iteration  4 :  188  enodes  (cost  15 )
0.188 * * [simplify]: Extracting # 0 : cost  0
0.189 * * [simplify]: Extracting # 1 : cost  0
0.189 * * [simplify]: Extracting # 2 : cost  0
0.190 * * [simplify]: Extracting # 3 : cost  0
0.190 * * [simplify]: iteration  5 :  346  enodes  (cost  15 )
0.378 * * [simplify]: Extracting # 0 : cost  0
0.379 * * [simplify]: Extracting # 1 : cost  0
0.379 * * [simplify]: Extracting # 2 : cost  0
0.380 * * [simplify]: Extracting # 3 : cost  0
0.380 * * [simplify]: Extracting # 4 : cost  0
0.381 * * [simplify]: iteration  6 :  579  enodes  (cost  15 )
0.676 * * [simplify]: Extracting # 0 : cost  0
0.678 * * [simplify]: Extracting # 1 : cost  0
0.679 * * [simplify]: Extracting # 2 : cost  0
0.681 * * [simplify]: iteration  7 :  875  enodes  (cost  15 )
1.838 * * [simplify]: Extracting # 0 : cost  0
1.843 * * [simplify]: Extracting # 1 : cost  0
1.847 * * [simplify]: Extracting # 2 : cost  0
1.849 * * [simplify]: iteration  8 :  2271  enodes  (cost  15 )
4.554 * * [simplify]: Extracting # 0 : cost  0
4.565 * * [simplify]: Extracting # 1 : cost  0
4.569 * * [simplify]: Extracting # 2 : cost  0
4.573 * * [simplify]: Extracting # 3 : cost  0
4.579 * * [simplify]: Extracting # 4 : cost  0
4.585 * * [simplify]: iteration done:  5000  enodes  (cost  15 )
4.586 * [simplify]: Simplified to:
  (* (- x y) (/ (+ x y) (+ (* x x) (* y y))))
4.590 * * [progress]: iteration 1 / 4
4.591 * * * [progress]: picking best candidate
4.595 * * * * [pick]: Picked  #<alt (λ (x y) (/ (* (- x y) (+ x y)) (+ (* x x) (* y y))))>
4.596 * * * [progress]: localizing error
4.614 * * * [progress]: generating rewritten candidates
4.614 * * * * [progress]: [ 1 / 2 ] rewriting at (2)
4.668 * * * * [progress]: [ 2 / 2 ] rewriting at (2 2)
4.683 * * * [progress]: generating series expansions
4.683 * * * * [progress]: [ 1 / 2 ] generating series at (2)