0.534 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.010 * * * [progress]: [2/2] Setting up program.
0.011 * [progress]: [Phase 2 of 3] Improving.
0.011 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (+ (* x x) 1.0)
0.012 * * [simplify]: iteration  0 :  4  enodes  (cost  5 )
0.013 * * [simplify]: iteration  1 :  5  enodes  (cost  5 )
0.013 * * [simplify]: iteration  done :  5  enodes  (cost  5 )
0.013 * [simplify]: Simplified to:
   (+ (* x x) 1.0)
0.014 * * [progress]: iteration 1 / 4
0.014 * * * [progress]: picking best candidate
0.015 * * * * [pick]: Picked  #<alt (λ (x) (+ (* x x) 1.0))>
0.015 * * * [progress]: localizing error
0.018 * * * [progress]: generating rewritten candidates
0.018 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.021 * * * [progress]: generating series expansions
0.021 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.021 * [approximate]: Taking taylor expansion of (+ (pow x 2) 1.0) in (x) around 0
0.021 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.021 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.021 * [taylor]: Taking taylor expansion of x in x
0.021 * [taylor]: Taking taylor expansion of 1.0 in x
0.021 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.021 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.021 * [taylor]: Taking taylor expansion of x in x
0.021 * [taylor]: Taking taylor expansion of 1.0 in x
0.028 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in (x) around 0
0.028 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.028 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.028 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.028 * [taylor]: Taking taylor expansion of x in x
0.029 * [taylor]: Taking taylor expansion of 1.0 in x
0.029 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.029 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.029 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.029 * [taylor]: Taking taylor expansion of x in x
0.029 * [taylor]: Taking taylor expansion of 1.0 in x
0.047 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in (x) around 0
0.047 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.047 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.047 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.047 * [taylor]: Taking taylor expansion of x in x
0.047 * [taylor]: Taking taylor expansion of 1.0 in x
0.047 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.047 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.047 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.047 * [taylor]: Taking taylor expansion of x in x
0.048 * [taylor]: Taking taylor expansion of 1.0 in x
0.060 * * * [progress]: simplifying candidates
0.060 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (exp (* x x)) (exp 1.0))
  (log (+ (* x x) 1.0))
  (exp (+ (* x x) 1.0))
  (* (cbrt (+ (* x x) 1.0)) (cbrt (+ (* x x) 1.0)))
  (cbrt (+ (* x x) 1.0))
  (* (* (+ (* x x) 1.0) (+ (* x x) 1.0)) (+ (* x x) 1.0))
  (sqrt (+ (* x x) 1.0))
  (sqrt (+ (* x x) 1.0))
  (+ (pow (* x x) 3) (pow 1.0 3))
  (+ (* (* x x) (* x x)) (- (* 1.0 1.0) (* (* x x) 1.0)))
  (- (* (* x x) (* x x)) (* 1.0 1.0))
  (- (* x x) 1.0)
  (+ (pow x 2) 1.0)
  (+ (pow x 2) 1.0)
  (+ (pow x 2) 1.0)
0.061 * * [simplify]: iteration  0 :  28  enodes  (cost  124 )
0.067 * * [simplify]: iteration  1 :  82  enodes  (cost  121 )
0.085 * * [simplify]: iteration  2 :  267  enodes  (cost  101 )
0.153 * * [simplify]: iteration  3 :  469  enodes  (cost  101 )
0.293 * * [simplify]: iteration  4 :  967  enodes  (cost  101 )
0.682 * * [simplify]: iteration  5 :  2381  enodes  (cost  101 )
1.865 * * [simplify]: iteration  done :  5001  enodes  (cost  101 )
1.865 * [simplify]: Simplified to:
   (exp (+ (* x x) 1.0))
  (log (+ (* x x) 1.0))
  (exp (+ (* x x) 1.0))
  (* (cbrt (+ (* x x) 1.0)) (cbrt (+ (* x x) 1.0)))
  (cbrt (+ (* x x) 1.0))
  (pow (+ (* x x) 1.0) 3)
  (sqrt (+ (* x x) 1.0))
  (sqrt (+ (* x x) 1.0))
  (+ (pow x 6) (pow 1.0 3))
  (+ (* 1.0 (- 1.0 (* x x))) (pow x 4))
  (- (pow x 4) (* 1.0 1.0))
  (- (* x x) 1.0)
  (+ (* x x) 1.0)
  (+ (* x x) 1.0)
  (+ (* x x) 1.0)
1.865 * * * [progress]: adding candidates to table
1.886 * * [progress]: iteration 2 / 4
1.886 * * * [progress]: picking best candidate
1.888 * * * * [pick]: Picked  #<alt (λ (x) (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))>
1.888 * * * [progress]: localizing error
1.895 * * * [progress]: generating rewritten candidates
1.895 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
1.920 * * * [progress]: generating series expansions
1.920 * * * * [progress]: [ 1 / 1 ] generating series at (2)
1.921 * [approximate]: Taking taylor expansion of (/ (- (pow x 4) 1.0) (- (pow x 2) 1.0)) in (x) around 0
1.921 * [taylor]: Taking taylor expansion of (/ (- (pow x 4) 1.0) (- (pow x 2) 1.0)) in x
1.921 * [taylor]: Taking taylor expansion of (- (pow x 4) 1.0) in x
1.921 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.921 * [taylor]: Taking taylor expansion of x in x
1.921 * [taylor]: Taking taylor expansion of 1.0 in x
1.921 * [taylor]: Taking taylor expansion of (- (pow x 2) 1.0) in x
1.921 * [taylor]: Taking taylor expansion of (pow x 2) in x
1.921 * [taylor]: Taking taylor expansion of x in x
1.921 * [taylor]: Taking taylor expansion of 1.0 in x
1.923 * [taylor]: Taking taylor expansion of (/ (- (pow x 4) 1.0) (- (pow x 2) 1.0)) in x
1.923 * [taylor]: Taking taylor expansion of (- (pow x 4) 1.0) in x
1.923 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.923 * [taylor]: Taking taylor expansion of x in x
1.924 * [taylor]: Taking taylor expansion of 1.0 in x
1.924 * [taylor]: Taking taylor expansion of (- (pow x 2) 1.0) in x
1.924 * [taylor]: Taking taylor expansion of (pow x 2) in x
1.924 * [taylor]: Taking taylor expansion of x in x
1.924 * [taylor]: Taking taylor expansion of 1.0 in x
1.953 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) 1.0) (- (/ 1 (pow x 2)) 1.0)) in (x) around 0
1.953 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) 1.0) (- (/ 1 (pow x 2)) 1.0)) in x
1.953 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) 1.0) in x
1.953 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
1.953 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.953 * [taylor]: Taking taylor expansion of x in x
1.954 * [taylor]: Taking taylor expansion of 1.0 in x
1.954 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
1.954 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
1.954 * [taylor]: Taking taylor expansion of (pow x 2) in x
1.954 * [taylor]: Taking taylor expansion of x in x
1.955 * [taylor]: Taking taylor expansion of 1.0 in x
1.955 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) 1.0) (- (/ 1 (pow x 2)) 1.0)) in x
1.955 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) 1.0) in x
1.955 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
1.955 * [taylor]: Taking taylor expansion of (pow x 4) in x
1.955 * [taylor]: Taking taylor expansion of x in x
1.956 * [taylor]: Taking taylor expansion of 1.0 in x
1.956 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
1.956 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
1.956 * [taylor]: Taking taylor expansion of (pow x 2) in x
1.956 * [taylor]: Taking taylor expansion of x in x
1.957 * [taylor]: Taking taylor expansion of 1.0 in x
2.003 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) 1.0) (- (/ 1 (pow x 2)) 1.0)) in (x) around 0
2.003 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) 1.0) (- (/ 1 (pow x 2)) 1.0)) in x
2.003 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) 1.0) in x
2.003 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.003 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.003 * [taylor]: Taking taylor expansion of x in x
2.004 * [taylor]: Taking taylor expansion of 1.0 in x
2.004 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
2.004 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.004 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.004 * [taylor]: Taking taylor expansion of x in x
2.005 * [taylor]: Taking taylor expansion of 1.0 in x
2.005 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 4)) 1.0) (- (/ 1 (pow x 2)) 1.0)) in x
2.005 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 4)) 1.0) in x
2.005 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.005 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.005 * [taylor]: Taking taylor expansion of x in x
2.006 * [taylor]: Taking taylor expansion of 1.0 in x
2.006 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) 1.0) in x
2.006 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.006 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.006 * [taylor]: Taking taylor expansion of x in x
2.007 * [taylor]: Taking taylor expansion of 1.0 in x
2.048 * * * [progress]: simplifying candidates
2.049 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (log (- (pow x 4) (* 1.0 1.0))) (log (- (* x x) 1.0)))
  (log (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))
  (exp (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))
  (/ (* (* (- (pow x 4) (* 1.0 1.0)) (- (pow x 4) (* 1.0 1.0))) (- (pow x 4) (* 1.0 1.0))) (* (* (- (* x x) 1.0) (- (* x x) 1.0)) (- (* x x) 1.0)))
  (* (cbrt (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0))) (cbrt (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0))))
  (cbrt (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))
  (* (* (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)) (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0))) (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))
  (sqrt (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))
  (sqrt (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0)))
  (- (- (pow x 4) (* 1.0 1.0)))
  (- (- (* x x) 1.0))
  (/ (pow x 4) (- (* x x) 1.0))
  (/ (* 1.0 1.0) (- (* x x) 1.0))
  (/ (* (cbrt (- (pow x 4) (* 1.0 1.0))) (cbrt (- (pow x 4) (* 1.0 1.0)))) (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (cbrt (- (pow x 4) (* 1.0 1.0))) (cbrt (- (* x x) 1.0)))
  (/ (* (cbrt (- (pow x 4) (* 1.0 1.0))) (cbrt (- (pow x 4) (* 1.0 1.0)))) (sqrt (- (* x x) 1.0)))
  (/ (cbrt (- (pow x 4) (* 1.0 1.0))) (sqrt (- (* x x) 1.0)))
  (/ (* (cbrt (- (pow x 4) (* 1.0 1.0))) (cbrt (- (pow x 4) (* 1.0 1.0)))) 1)
  (/ (cbrt (- (pow x 4) (* 1.0 1.0))) (- (* x x) 1.0))
  (/ (* (cbrt (- (pow x 4) (* 1.0 1.0))) (cbrt (- (pow x 4) (* 1.0 1.0)))) (+ x (sqrt 1.0)))
  (/ (cbrt (- (pow x 4) (* 1.0 1.0))) (- x (sqrt 1.0)))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (cbrt (- (* x x) 1.0)))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (sqrt (- (* x x) 1.0)))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (sqrt (- (* x x) 1.0)))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) 1)
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (- (* x x) 1.0))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (+ x (sqrt 1.0)))
  (/ (sqrt (- (pow x 4) (* 1.0 1.0))) (- x (sqrt 1.0)))
  (/ 1 (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (- (pow x 4) (* 1.0 1.0)) (cbrt (- (* x x) 1.0)))
  (/ 1 (sqrt (- (* x x) 1.0)))
  (/ (- (pow x 4) (* 1.0 1.0)) (sqrt (- (* x x) 1.0)))
  (/ 1 1)
  (/ (- (pow x 4) (* 1.0 1.0)) (- (* x x) 1.0))
  (/ 1 (+ x (sqrt 1.0)))
  (/ (- (pow x 4) (* 1.0 1.0)) (- x (sqrt 1.0)))
  (/ (+ (pow (sqrt x) 4) 1.0) (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (- (pow (sqrt x) 4) 1.0) (cbrt (- (* x x) 1.0)))
  (/ (+ (pow (sqrt x) 4) 1.0) (sqrt (- (* x x) 1.0)))
  (/ (- (pow (sqrt x) 4) 1.0) (sqrt (- (* x x) 1.0)))
  (/ (+ (pow (sqrt x) 4) 1.0) 1)
  (/ (- (pow (sqrt x) 4) 1.0) (- (* x x) 1.0))
  (/ (+ (pow (sqrt x) 4) 1.0) (+ x (sqrt 1.0)))
  (/ (- (pow (sqrt x) 4) 1.0) (- x (sqrt 1.0)))
  (/ (+ (sqrt (pow x 4)) 1.0) (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (- (sqrt (pow x 4)) 1.0) (cbrt (- (* x x) 1.0)))
  (/ (+ (sqrt (pow x 4)) 1.0) (sqrt (- (* x x) 1.0)))
  (/ (- (sqrt (pow x 4)) 1.0) (sqrt (- (* x x) 1.0)))
  (/ (+ (sqrt (pow x 4)) 1.0) 1)
  (/ (- (sqrt (pow x 4)) 1.0) (- (* x x) 1.0))
  (/ (+ (sqrt (pow x 4)) 1.0) (+ x (sqrt 1.0)))
  (/ (- (sqrt (pow x 4)) 1.0) (- x (sqrt 1.0)))
  (/ (+ (pow x (/ 4 2)) 1.0) (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (- (pow x (/ 4 2)) 1.0) (cbrt (- (* x x) 1.0)))
  (/ (+ (pow x (/ 4 2)) 1.0) (sqrt (- (* x x) 1.0)))
  (/ (- (pow x (/ 4 2)) 1.0) (sqrt (- (* x x) 1.0)))
  (/ (+ (pow x (/ 4 2)) 1.0) 1)
  (/ (- (pow x (/ 4 2)) 1.0) (- (* x x) 1.0))
  (/ (+ (pow x (/ 4 2)) 1.0) (+ x (sqrt 1.0)))
  (/ (- (pow x (/ 4 2)) 1.0) (- x (sqrt 1.0)))
  (/ 1 (- (* x x) 1.0))
  (/ (- (* x x) 1.0) (- (pow x 4) (* 1.0 1.0)))
  (/ (- (pow x 4) (* 1.0 1.0)) (* (cbrt (- (* x x) 1.0)) (cbrt (- (* x x) 1.0))))
  (/ (- (pow x 4) (* 1.0 1.0)) (sqrt (- (* x x) 1.0)))
  (/ (- (pow x 4) (* 1.0 1.0)) 1)
  (/ (- (pow x 4) (* 1.0 1.0)) (+ x (sqrt 1.0)))
  (/ (- (* x x) 1.0) (cbrt (- (pow x 4) (* 1.0 1.0))))
  (/ (- (* x x) 1.0) (sqrt (- (pow x 4) (* 1.0 1.0))))
  (/ (- (* x x) 1.0) (- (pow x 4) (* 1.0 1.0)))
  (/ (- (* x x) 1.0) (- (pow (sqrt x) 4) 1.0))
  (/ (- (* x x) 1.0) (- (sqrt (pow x 4)) 1.0))
  (/ (- (* x x) 1.0) (- (pow x (/ 4 2)) 1.0))
  (/ (- (pow x 4) (* 1.0 1.0)) (- (pow (* x x) 3) (pow 1.0 3)))
  (/ (- (pow x 4) (* 1.0 1.0)) (- (* (* x x) (* x x)) (* 1.0 1.0)))
  (* (- (* x x) 1.0) (+ (* (pow x 4) (pow x 4)) (+ (* (* 1.0 1.0) (* 1.0 1.0)) (* (pow x 4) (* 1.0 1.0)))))
  (* (- (* x x) 1.0) (+ (pow x 4) (* 1.0 1.0)))
  (+ (* 1.0 (pow x 2)) 1.0)
  (+ (pow x 2) 1.0)
  (+ (pow x 2) 1.0)
2.053 * * [simplify]: iteration  0 :  126  enodes  (cost  1143 )
2.078 * * [simplify]: iteration  1 :  313  enodes  (cost  1102 )
2.137 * * [simplify]: iteration  2 :  883  enodes  (cost  1044 )