16.347 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.010 * * * [progress]: [2/2] Setting up program.
0.012 * [progress]: [Phase 2 of 3] Improving.
0.012 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ 2.0 (+ (exp x) (exp (- x))))
0.013 * * [simplify]: iteration  0 :  7  enodes  (cost  8 )
0.014 * * [simplify]: iteration  1 :  10  enodes  (cost  8 )
0.016 * * [simplify]: iteration  2 :  12  enodes  (cost  8 )
0.017 * * [simplify]: iteration  3 :  14  enodes  (cost  8 )
0.019 * * [simplify]: iteration  4 :  15  enodes  (cost  8 )
0.021 * * [simplify]: iteration  5 :  21  enodes  (cost  8 )
0.025 * * [simplify]: iteration  6 :  33  enodes  (cost  8 )
0.034 * * [simplify]: iteration  7 :  57  enodes  (cost  8 )
0.064 * * [simplify]: iteration  8 :  158  enodes  (cost  8 )
0.381 * * [simplify]: iteration  9 :  1531  enodes  (cost  8 )
29.722 * * [simplify]: iteration  done :  5000  enodes  (cost  8 )
29.722 * [simplify]: Simplified to:
   (/ 2.0 (+ (exp x) (exp (- x))))
29.722 * * [progress]: iteration 1 / 4
29.722 * * * [progress]: picking best candidate
29.724 * * * * [pick]: Picked  #<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))>
29.724 * * * [progress]: localizing error
29.730 * * * [progress]: generating rewritten candidates
29.730 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
29.745 * * * [progress]: generating series expansions
29.745 * * * * [progress]: [ 1 / 1 ] generating series at (2)
29.746 * [approximate]: Taking taylor expansion of (/ 2.0 (+ (exp x) (exp (- x)))) in (x) around 0
29.746 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp x) (exp (- x)))) in x
29.746 * [taylor]: Taking taylor expansion of 2.0 in x
29.746 * [taylor]: Taking taylor expansion of (+ (exp x) (exp (- x))) in x
29.746 * [taylor]: Taking taylor expansion of (exp x) in x
29.746 * [taylor]: Taking taylor expansion of x in x
29.746 * [taylor]: Taking taylor expansion of (exp (- x)) in x
29.746 * [taylor]: Taking taylor expansion of (- x) in x
29.746 * [taylor]: Taking taylor expansion of x in x
29.747 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp x) (exp (- x)))) in x
29.747 * [taylor]: Taking taylor expansion of 2.0 in x
29.747 * [taylor]: Taking taylor expansion of (+ (exp x) (exp (- x))) in x
29.747 * [taylor]: Taking taylor expansion of (exp x) in x
29.747 * [taylor]: Taking taylor expansion of x in x
29.747 * [taylor]: Taking taylor expansion of (exp (- x)) in x
29.747 * [taylor]: Taking taylor expansion of (- x) in x
29.747 * [taylor]: Taking taylor expansion of x in x
29.770 * [approximate]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (- (/ 1 x))))) in (x) around 0
29.770 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (- (/ 1 x))))) in x
29.770 * [taylor]: Taking taylor expansion of 2.0 in x
29.770 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (- (/ 1 x)))) in x
29.770 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
29.770 * [taylor]: Taking taylor expansion of (/ 1 x) in x
29.770 * [taylor]: Taking taylor expansion of x in x
29.770 * [taylor]: Taking taylor expansion of (exp (- (/ 1 x))) in x
29.770 * [taylor]: Taking taylor expansion of (- (/ 1 x)) in x
29.770 * [taylor]: Taking taylor expansion of (/ 1 x) in x
29.770 * [taylor]: Taking taylor expansion of x in x
29.771 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (- (/ 1 x))))) in x
29.771 * [taylor]: Taking taylor expansion of 2.0 in x
29.771 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (- (/ 1 x)))) in x
29.771 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
29.771 * [taylor]: Taking taylor expansion of (/ 1 x) in x
29.771 * [taylor]: Taking taylor expansion of x in x
29.771 * [taylor]: Taking taylor expansion of (exp (- (/ 1 x))) in x
29.771 * [taylor]: Taking taylor expansion of (- (/ 1 x)) in x
29.772 * [taylor]: Taking taylor expansion of (/ 1 x) in x
29.772 * [taylor]: Taking taylor expansion of x in x
29.777 * [approximate]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (/ -1 x)))) in (x) around 0
29.777 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (/ -1 x)))) in x
29.777 * [taylor]: Taking taylor expansion of 2.0 in x
29.777 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (/ -1 x))) in x
29.777 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
29.777 * [taylor]: Taking taylor expansion of (/ 1 x) in x
29.777 * [taylor]: Taking taylor expansion of x in x
29.778 * [taylor]: Taking taylor expansion of (exp (/ -1 x)) in x
29.778 * [taylor]: Taking taylor expansion of (/ -1 x) in x
29.778 * [taylor]: Taking taylor expansion of -1 in x
29.778 * [taylor]: Taking taylor expansion of x in x
29.778 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (/ -1 x)))) in x
29.778 * [taylor]: Taking taylor expansion of 2.0 in x
29.778 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (/ -1 x))) in x
29.778 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
29.778 * [taylor]: Taking taylor expansion of (/ 1 x) in x
29.778 * [taylor]: Taking taylor expansion of x in x
29.779 * [taylor]: Taking taylor expansion of (exp (/ -1 x)) in x
29.779 * [taylor]: Taking taylor expansion of (/ -1 x) in x
29.779 * [taylor]: Taking taylor expansion of -1 in x
29.779 * [taylor]: Taking taylor expansion of x in x
29.783 * * * [progress]: simplifying candidates
29.784 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ 2.0 (+ (exp x) (exp (- x)))))
  (log1p (/ 2.0 (+ (exp x) (exp (- x)))))
  (- (log 2.0) (log (+ (exp x) (exp (- x)))))
  (log (/ 2.0 (+ (exp x) (exp (- x)))))
  (exp (/ 2.0 (+ (exp x) (exp (- x)))))
  (/ (* (* 2.0 2.0) 2.0) (* (* (+ (exp x) (exp (- x))) (+ (exp x) (exp (- x)))) (+ (exp x) (exp (- x)))))
  (* (cbrt (/ 2.0 (+ (exp x) (exp (- x))))) (cbrt (/ 2.0 (+ (exp x) (exp (- x))))))
  (cbrt (/ 2.0 (+ (exp x) (exp (- x)))))
  (* (* (/ 2.0 (+ (exp x) (exp (- x)))) (/ 2.0 (+ (exp x) (exp (- x))))) (/ 2.0 (+ (exp x) (exp (- x)))))
  (sqrt (/ 2.0 (+ (exp x) (exp (- x)))))
  (sqrt (/ 2.0 (+ (exp x) (exp (- x)))))
  (- 2.0)
  (- (+ (exp x) (exp (- x))))
  (/ (* (cbrt 2.0) (cbrt 2.0)) (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ (cbrt 2.0) (cbrt (+ (exp x) (exp (- x)))))
  (/ (* (cbrt 2.0) (cbrt 2.0)) (sqrt (+ (exp x) (exp (- x)))))
  (/ (cbrt 2.0) (sqrt (+ (exp x) (exp (- x)))))
  (/ (* (cbrt 2.0) (cbrt 2.0)) 1)
  (/ (cbrt 2.0) (+ (exp x) (exp (- x))))
  (/ (* (cbrt 2.0) (cbrt 2.0)) 1)
  (/ (cbrt 2.0) (+ (exp x) (exp (- x))))
  (/ (sqrt 2.0) (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ (sqrt 2.0) (cbrt (+ (exp x) (exp (- x)))))
  (/ (sqrt 2.0) (sqrt (+ (exp x) (exp (- x)))))
  (/ (sqrt 2.0) (sqrt (+ (exp x) (exp (- x)))))
  (/ (sqrt 2.0) 1)
  (/ (sqrt 2.0) (+ (exp x) (exp (- x))))
  (/ (sqrt 2.0) 1)
  (/ (sqrt 2.0) (+ (exp x) (exp (- x))))
  (/ 1 (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ 2.0 (cbrt (+ (exp x) (exp (- x)))))
  (/ 1 (sqrt (+ (exp x) (exp (- x)))))
  (/ 2.0 (sqrt (+ (exp x) (exp (- x)))))
  (/ 1 1)
  (/ 2.0 (+ (exp x) (exp (- x))))
  (/ 1 1)
  (/ 2.0 (+ (exp x) (exp (- x))))
  (/ 1 (+ (exp x) (exp (- x))))
  (/ (+ (exp x) (exp (- x))) 2.0)
  (/ 2.0 (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ 2.0 (sqrt (+ (exp x) (exp (- x)))))
  (/ 2.0 1)
  (/ 2.0 1)
  (/ (+ (exp x) (exp (- x))) (cbrt 2.0))
  (/ (+ (exp x) (exp (- x))) (sqrt 2.0))
  (/ (+ (exp x) (exp (- x))) 2.0)
  (/ 2.0 (+ (pow (exp x) 3) (pow (exp (- x)) 3)))
  (/ 2.0 (- (* (exp x) (exp x)) (* (exp (- x)) (exp (- x)))))
  (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (/ 2.0 (+ (exp x) (exp (- x))))
  (/ 2.0 (+ (exp (* -1 x)) (exp x)))
29.786 * * [simplify]: iteration  0 :  80  enodes  (cost  510 )
29.800 * * [simplify]: iteration  1 :  171  enodes  (cost  489 )
29.838 * * [simplify]: iteration  2 :  537  enodes  (cost  455 )
30.013 * * [simplify]: iteration  3 :  2156  enodes  (cost  454 )
31.053 * * [simplify]: iteration  done :  5001  enodes  (cost  454 )
31.053 * [simplify]: Simplified to:
   (expm1 (/ 2.0 (+ (exp x) (exp (- x)))))
  (log1p (/ 2.0 (+ (exp x) (exp (- x)))))
  (log (/ 2.0 (+ (exp x) (exp (- x)))))
  (log (/ 2.0 (+ (exp x) (exp (- x)))))
  (exp (/ 2.0 (+ (exp x) (exp (- x)))))
  (pow (/ 2.0 (+ (exp x) (exp (- x)))) 3)
  (* (cbrt (/ 2.0 (+ (exp x) (exp (- x))))) (cbrt (/ 2.0 (+ (exp x) (exp (- x))))))
  (cbrt (/ 2.0 (+ (exp x) (exp (- x)))))
  (pow (/ 2.0 (+ (exp x) (exp (- x)))) 3)
  (sqrt (/ 2.0 (+ (exp x) (exp (- x)))))
  (sqrt (/ 2.0 (+ (exp x) (exp (- x)))))
  (- 2.0)
  (- (+ (exp x) (exp (- x))))
  (/ (* (cbrt 2.0) (cbrt 2.0)) (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ (cbrt 2.0) (cbrt (+ (exp x) (exp (- x)))))
  (/ (* (cbrt 2.0) (cbrt 2.0)) (sqrt (+ (exp x) (exp (- x)))))
  (/ (cbrt 2.0) (sqrt (+ (exp x) (exp (- x)))))
  (* (cbrt 2.0) (cbrt 2.0))
  (/ (cbrt 2.0) (+ (exp x) (exp (- x))))
  (* (cbrt 2.0) (cbrt 2.0))
  (/ (cbrt 2.0) (+ (exp x) (exp (- x))))
  (/ (sqrt 2.0) (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ (sqrt 2.0) (cbrt (+ (exp x) (exp (- x)))))
  (/ (sqrt 2.0) (sqrt (+ (exp x) (exp (- x)))))
  (/ (sqrt 2.0) (sqrt (+ (exp x) (exp (- x)))))
  (sqrt 2.0)
  (/ (sqrt 2.0) (+ (exp x) (exp (- x))))
  (sqrt 2.0)
  (/ (sqrt 2.0) (+ (exp x) (exp (- x))))
  (/ 1 (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ 2.0 (cbrt (+ (exp x) (exp (- x)))))
  (/ 1 (sqrt (+ (exp x) (exp (- x)))))
  (/ 2.0 (sqrt (+ (exp x) (exp (- x)))))
  1
  (/ 2.0 (+ (exp (- x)) (exp x)))
  1
  (/ 2.0 (+ (exp (- x)) (exp x)))
  (/ 1 (+ (exp x) (exp (- x))))
  (/ (+ (exp x) (exp (- x))) 2.0)
  (/ 2.0 (* (cbrt (+ (exp x) (exp (- x)))) (cbrt (+ (exp x) (exp (- x))))))
  (/ 2.0 (sqrt (+ (exp x) (exp (- x)))))
  2.0
  2.0
  (/ (+ (exp x) (exp (- x))) (cbrt 2.0))
  (/ (+ (exp x) (exp (- x))) (sqrt 2.0))
  (/ (+ (exp x) (exp (- x))) 2.0)
  (/ 2.0 (+ (pow (exp x) 3) (exp (* x -3))))
  (/ 2.0 (- (exp (+ x x)) (exp (* x -2))))
  (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))
  (/ 2.0 (+ (exp (- x)) (exp x)))
  (/ 2.0 (+ (exp (- x)) (exp x)))
31.054 * * * [progress]: adding candidates to table
31.137 * * [progress]: iteration 2 / 4
31.137 * * * [progress]: picking best candidate
31.139 * * * * [pick]: Picked  #<alt (λ (x) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))>
31.139 * * * [progress]: localizing error
31.148 * * * [progress]: generating rewritten candidates
31.148 * * * * [progress]: [ 1 / 3 ] rewriting at (2)
31.151 * * * * [progress]: [ 2 / 3 ] rewriting at (2 2)
31.156 * * * * [progress]: [ 3 / 3 ] rewriting at (2 1)
31.158 * * * [progress]: generating series expansions
31.158 * * * * [progress]: [ 1 / 3 ] generating series at (2)
31.158 * [approximate]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))) in (x) around 0
31.158 * [taylor]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))) in x
31.158 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow x 4) 1.0) in x
31.159 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow x 4)) 1.0)
31.159 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
31.159 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.159 * [taylor]: Taking taylor expansion of (pow x 4) in x
31.159 * [taylor]: Taking taylor expansion of x in x
31.159 * [taylor]: Taking taylor expansion of 1.0 in x
31.159 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
31.159 * [taylor]: Taking taylor expansion of 0.5 in x
31.159 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.159 * [taylor]: Taking taylor expansion of x in x
31.159 * [taylor]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))) in x
31.159 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow x 4) 1.0) in x
31.159 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow x 4)) 1.0)
31.159 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
31.159 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.159 * [taylor]: Taking taylor expansion of (pow x 4) in x
31.159 * [taylor]: Taking taylor expansion of x in x
31.159 * [taylor]: Taking taylor expansion of 1.0 in x
31.159 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
31.159 * [taylor]: Taking taylor expansion of 0.5 in x
31.159 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.159 * [taylor]: Taking taylor expansion of x in x
31.167 * [approximate]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
31.167 * [taylor]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
31.167 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) in x
31.167 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ 1 x) 4)) 1.0)
31.167 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ 1 x) 4)) in x
31.167 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.167 * [taylor]: Taking taylor expansion of (pow (/ 1 x) 4) in x
31.167 * [taylor]: Taking taylor expansion of (/ 1 x) in x
31.167 * [taylor]: Taking taylor expansion of x in x
31.167 * [taylor]: Taking taylor expansion of 1.0 in x
31.167 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
31.167 * [taylor]: Taking taylor expansion of 0.5 in x
31.167 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
31.167 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.167 * [taylor]: Taking taylor expansion of x in x
31.168 * [taylor]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
31.168 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) in x
31.168 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ 1 x) 4)) 1.0)
31.168 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ 1 x) 4)) in x
31.168 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.168 * [taylor]: Taking taylor expansion of (pow (/ 1 x) 4) in x
31.168 * [taylor]: Taking taylor expansion of (/ 1 x) in x
31.168 * [taylor]: Taking taylor expansion of x in x
31.168 * [taylor]: Taking taylor expansion of 1.0 in x
31.168 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
31.168 * [taylor]: Taking taylor expansion of 0.5 in x
31.169 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
31.169 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.169 * [taylor]: Taking taylor expansion of x in x
31.186 * [approximate]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
31.186 * [taylor]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
31.186 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) in x
31.186 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ -1 x) 4)) 1.0)
31.186 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ -1 x) 4)) in x
31.186 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.186 * [taylor]: Taking taylor expansion of (pow (/ -1 x) 4) in x
31.186 * [taylor]: Taking taylor expansion of (/ -1 x) in x
31.186 * [taylor]: Taking taylor expansion of -1 in x
31.186 * [taylor]: Taking taylor expansion of x in x
31.186 * [taylor]: Taking taylor expansion of 1.0 in x
31.186 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
31.186 * [taylor]: Taking taylor expansion of 0.5 in x
31.186 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
31.186 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.186 * [taylor]: Taking taylor expansion of x in x
31.187 * [taylor]: Taking taylor expansion of (- (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
31.187 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) in x
31.187 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ -1 x) 4)) 1.0)
31.187 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ -1 x) 4)) in x
31.187 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.187 * [taylor]: Taking taylor expansion of (pow (/ -1 x) 4) in x
31.187 * [taylor]: Taking taylor expansion of (/ -1 x) in x
31.187 * [taylor]: Taking taylor expansion of -1 in x
31.187 * [taylor]: Taking taylor expansion of x in x
31.187 * [taylor]: Taking taylor expansion of 1.0 in x
31.188 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
31.188 * [taylor]: Taking taylor expansion of 0.5 in x
31.188 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
31.188 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.188 * [taylor]: Taking taylor expansion of x in x
31.207 * * * * [progress]: [ 2 / 3 ] generating series at (2 2)
31.207 * [approximate]: Taking taylor expansion of (* 0.5 (pow x 2)) in (x) around 0
31.207 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
31.207 * [taylor]: Taking taylor expansion of 0.5 in x
31.207 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.207 * [taylor]: Taking taylor expansion of x in x
31.207 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
31.207 * [taylor]: Taking taylor expansion of 0.5 in x
31.207 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.207 * [taylor]: Taking taylor expansion of x in x
31.215 * [approximate]: Taking taylor expansion of (/ 0.5 (pow x 2)) in (x) around 0
31.215 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
31.215 * [taylor]: Taking taylor expansion of 0.5 in x
31.215 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.215 * [taylor]: Taking taylor expansion of x in x
31.216 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
31.216 * [taylor]: Taking taylor expansion of 0.5 in x
31.216 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.216 * [taylor]: Taking taylor expansion of x in x
31.224 * [approximate]: Taking taylor expansion of (/ 0.5 (pow x 2)) in (x) around 0
31.224 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
31.224 * [taylor]: Taking taylor expansion of 0.5 in x
31.224 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.224 * [taylor]: Taking taylor expansion of x in x
31.224 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
31.224 * [taylor]: Taking taylor expansion of 0.5 in x
31.224 * [taylor]: Taking taylor expansion of (pow x 2) in x
31.224 * [taylor]: Taking taylor expansion of x in x
31.232 * * * * [progress]: [ 3 / 3 ] generating series at (2 1)
31.233 * [approximate]: Taking taylor expansion of (fma 0.20833333333333334 (pow x 4) 1.0) in (x) around 0
31.233 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow x 4) 1.0) in x
31.233 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow x 4)) 1.0)
31.233 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
31.233 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.233 * [taylor]: Taking taylor expansion of (pow x 4) in x
31.233 * [taylor]: Taking taylor expansion of x in x
31.233 * [taylor]: Taking taylor expansion of 1.0 in x
31.233 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow x 4) 1.0) in x
31.233 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow x 4)) 1.0)
31.233 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
31.233 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.233 * [taylor]: Taking taylor expansion of (pow x 4) in x
31.233 * [taylor]: Taking taylor expansion of x in x
31.233 * [taylor]: Taking taylor expansion of 1.0 in x
31.248 * [approximate]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) in (x) around 0
31.248 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) in x
31.248 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ 1 x) 4)) 1.0)
31.248 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ 1 x) 4)) in x
31.248 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.248 * [taylor]: Taking taylor expansion of (pow (/ 1 x) 4) in x
31.248 * [taylor]: Taking taylor expansion of (/ 1 x) in x
31.248 * [taylor]: Taking taylor expansion of x in x
31.248 * [taylor]: Taking taylor expansion of 1.0 in x
31.248 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ 1 x) 4) 1.0) in x
31.248 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ 1 x) 4)) 1.0)
31.248 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ 1 x) 4)) in x
31.248 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.248 * [taylor]: Taking taylor expansion of (pow (/ 1 x) 4) in x
31.248 * [taylor]: Taking taylor expansion of (/ 1 x) in x
31.248 * [taylor]: Taking taylor expansion of x in x
31.249 * [taylor]: Taking taylor expansion of 1.0 in x
31.283 * [approximate]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) in (x) around 0
31.283 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) in x
31.283 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ -1 x) 4)) 1.0)
31.283 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ -1 x) 4)) in x
31.283 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.283 * [taylor]: Taking taylor expansion of (pow (/ -1 x) 4) in x
31.283 * [taylor]: Taking taylor expansion of (/ -1 x) in x
31.283 * [taylor]: Taking taylor expansion of -1 in x
31.283 * [taylor]: Taking taylor expansion of x in x
31.284 * [taylor]: Taking taylor expansion of 1.0 in x
31.284 * [taylor]: Taking taylor expansion of (fma 0.20833333333333334 (pow (/ -1 x) 4) 1.0) in x
31.284 * [taylor]: Rewrote expression to (+ (* 0.20833333333333334 (pow (/ -1 x) 4)) 1.0)
31.284 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow (/ -1 x) 4)) in x
31.284 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
31.284 * [taylor]: Taking taylor expansion of (pow (/ -1 x) 4) in x
31.284 * [taylor]: Taking taylor expansion of (/ -1 x) in x
31.284 * [taylor]: Taking taylor expansion of -1 in x
31.284 * [taylor]: Taking taylor expansion of x in x
31.284 * [taylor]: Taking taylor expansion of 1.0 in x
31.316 * * * [progress]: simplifying candidates
31.317 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (fma (* (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)) (cbrt (fma 0.20833333333333334 (pow x 4) 1.0))) (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)) (- (* (pow x 2) 0.5)))
  (fma (- (pow x 2)) 0.5 (* (pow x 2) 0.5))
  (fma (sqrt (fma 0.20833333333333334 (pow x 4) 1.0)) (sqrt (fma 0.20833333333333334 (pow x 4) 1.0)) (- (* (pow x 2) 0.5)))
  (fma (- (pow x 2)) 0.5 (* (pow x 2) 0.5))
  (fma 1 (fma 0.20833333333333334 (pow x 4) 1.0) (- (* (pow x 2) 0.5)))
  (fma (- (pow x 2)) 0.5 (* (pow x 2) 0.5))
  (expm1 (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (log1p (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (- (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (/ (exp (fma 0.20833333333333334 (pow x 4) 1.0)) (exp (* 0.5 (pow x 2))))
  (log (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (exp (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (* (cbrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))) (cbrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))))
  (cbrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (* (* (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (sqrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (sqrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (- (pow (fma 0.20833333333333334 (pow x 4) 1.0) 3) (pow (* 0.5 (pow x 2)) 3))
  (+ (* (fma 0.20833333333333334 (pow x 4) 1.0) (fma 0.20833333333333334 (pow x 4) 1.0)) (+ (* (* 0.5 (pow x 2)) (* 0.5 (pow x 2))) (* (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))))
  (- (* 0.5 (pow x 2)))
  (- (* (fma 0.20833333333333334 (pow x 4) 1.0) (fma 0.20833333333333334 (pow x 4) 1.0)) (* (* 0.5 (pow x 2)) (* 0.5 (pow x 2))))
  (+ (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))
  (- 1.0 (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (expm1 (* 0.5 (pow x 2)))
  (log1p (* 0.5 (pow x 2)))
  (+ (log 0.5) (* (log x) 2))
  (+ (log 0.5) (* (log x) 2))
  (+ (log 0.5) (log (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (exp (* 0.5 (pow x 2)))
  (* (* (* 0.5 0.5) 0.5) (* (* (pow x 2) (pow x 2)) (pow x 2)))
  (* (cbrt (* 0.5 (pow x 2))) (cbrt (* 0.5 (pow x 2))))
  (cbrt (* 0.5 (pow x 2)))
  (* (* (* 0.5 (pow x 2)) (* 0.5 (pow x 2))) (* 0.5 (pow x 2)))
  (sqrt (* 0.5 (pow x 2)))
  (sqrt (* 0.5 (pow x 2)))
  (* (sqrt 0.5) (pow (sqrt x) 2))
  (* (sqrt 0.5) (pow (sqrt x) 2))
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) (sqrt (pow x 2)))
  (* (sqrt 0.5) (sqrt (pow x 2)))
  (* (sqrt 0.5) (pow x (/ 2 2)))
  (* (sqrt 0.5) (pow x (/ 2 2)))
  (* 0.5 (pow (* (cbrt x) (cbrt x)) 2))
  (* 0.5 (pow (sqrt x) 2))
  (* 0.5 (pow 1 2))
  (* 0.5 x)
  (* 0.5 (* (cbrt (pow x 2)) (cbrt (pow x 2))))
  (* 0.5 (sqrt (pow x 2)))
  (* 0.5 1)
  (* 0.5 (pow x (/ 2 2)))
  (* (cbrt 0.5) (pow x 2))
  (* (sqrt 0.5) (pow x 2))
  (* 0.5 (pow x 2))
  (expm1 (fma 0.20833333333333334 (pow x 4) 1.0))
  (log1p (fma 0.20833333333333334 (pow x 4) 1.0))
  (* 0.20833333333333334 (pow x 4))
  (log (fma 0.20833333333333334 (pow x 4) 1.0))
  (exp (fma 0.20833333333333334 (pow x 4) 1.0))
  (* (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)) (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)))
  (cbrt (fma 0.20833333333333334 (pow x 4) 1.0))
  (* (* (fma 0.20833333333333334 (pow x 4) 1.0) (fma 0.20833333333333334 (pow x 4) 1.0)) (fma 0.20833333333333334 (pow x 4) 1.0))
  (sqrt (fma 0.20833333333333334 (pow x 4) 1.0))
  (sqrt (fma 0.20833333333333334 (pow x 4) 1.0))
  (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (* 0.5 (pow x 2))
  (* 0.5 (pow x 2))
  (* 0.5 (pow x 2))
  (+ (* 0.20833333333333334 (pow x 4)) 1.0)
  (+ (* 0.20833333333333334 (pow x 4)) 1.0)
  (+ (* 0.20833333333333334 (pow x 4)) 1.0)
31.320 * * [simplify]: iteration  0 :  99  enodes  (cost  788 )
31.337 * * [simplify]: iteration  1 :  206  enodes  (cost  729 )
31.390 * * [simplify]: iteration  2 :  797  enodes  (cost  656 )
31.764 * * [simplify]: iteration  3 :  4389  enodes  (cost  634 )
34.826 * * [simplify]: iteration  done :  5000  enodes  (cost  634 )
34.826 * [simplify]: Simplified to:
   (fma 0.5 (- (pow x 2)) (pow (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)) 3))
  (* x (* x (* 0 0.5)))
  (- (fma 0.20833333333333334 (pow x 4) 1.0) (* (pow x 2) 0.5))
  (* x (* x (* 0 0.5)))
  (- (fma 0.20833333333333334 (pow x 4) 1.0) (* (pow x 2) 0.5))
  (* x (* x (* 0 0.5)))
  (expm1 (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (log1p (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (- (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (exp (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (log (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (exp (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (* (cbrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))) (cbrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2)))))
  (cbrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (pow (- (fma (pow x 4) 0.20833333333333334 1.0) (* (pow x 2) 0.5)) 3)
  (sqrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (sqrt (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))
  (- (pow (fma 0.20833333333333334 (pow x 4) 1.0) 3) (pow (* 0.5 (pow x 2)) 3))
  (fma (* 0.5 (pow x 4)) 0.5 (* (fma (pow x 2) 0.5 (fma (pow x 4) 0.20833333333333334 1.0)) (fma 0.20833333333333334 (pow x 4) 1.0)))
  (- (* 0.5 (pow x 2)))
  (- (* (fma 0.20833333333333334 (pow x 4) 1.0) (fma 0.20833333333333334 (pow x 4) 1.0)) (* (* 0.5 0.5) (pow x 4)))
  (fma (* 0.5 x) x (fma 0.20833333333333334 (pow x 4) 1.0))
  (- 1.0 (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (expm1 (* 0.5 (pow x 2)))
  (log1p (* 0.5 (pow x 2)))
  (log (* (pow x 2) 0.5))
  (log (* (pow x 2) 0.5))
  (log (* (pow x 2) 0.5))
  (log (* (pow x 2) 0.5))
  (exp (* 0.5 (pow x 2)))
  (pow (* (pow x 2) 0.5) 3)
  (* (cbrt (* 0.5 (pow x 2))) (cbrt (* 0.5 (pow x 2))))
  (cbrt (* 0.5 (pow x 2)))
  (pow (* (pow x 2) 0.5) 3)
  (sqrt (* 0.5 (pow x 2)))
  (sqrt (* 0.5 (pow x 2)))
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) x)
  (* (fabs x) (sqrt 0.5))
  (* (fabs x) (sqrt 0.5))
  (* (sqrt 0.5) x)
  (* (sqrt 0.5) x)
  (* 0.5 (pow (* (cbrt x) (cbrt x)) 2))
  (* 0.5 x)
  0.5
  (* 0.5 x)
  (* 0.5 (* (cbrt (pow x 2)) (cbrt (pow x 2))))
  (* (fabs x) 0.5)
  0.5
  (* 0.5 x)
  (* (cbrt 0.5) (pow x 2))
  (* (sqrt 0.5) (pow x 2))
  (* (pow x 2) 0.5)
  (expm1 (fma 0.20833333333333334 (pow x 4) 1.0))
  (log1p (fma 0.20833333333333334 (pow x 4) 1.0))
  (* (pow x 4) 0.20833333333333334)
  (log (fma 0.20833333333333334 (pow x 4) 1.0))
  (exp (fma 0.20833333333333334 (pow x 4) 1.0))
  (* (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)) (cbrt (fma 0.20833333333333334 (pow x 4) 1.0)))
  (cbrt (fma 0.20833333333333334 (pow x 4) 1.0))
  (pow (fma 0.20833333333333334 (pow x 4) 1.0) 3)
  (sqrt (fma 0.20833333333333334 (pow x 4) 1.0))
  (sqrt (fma 0.20833333333333334 (pow x 4) 1.0))
  (- (fma 0.20833333333333334 (pow x 4) 1.0) (* (pow x 2) 0.5))
  (- (fma 0.20833333333333334 (pow x 4) 1.0) (* (pow x 2) 0.5))
  (- (fma 0.20833333333333334 (pow x 4) 1.0) (* (pow x 2) 0.5))
  (* (pow x 2) 0.5)
  (* (pow x 2) 0.5)
  (* (pow x 2) 0.5)
  (fma 0.20833333333333334 (pow x 4) 1.0)
  (fma 0.20833333333333334 (pow x 4) 1.0)
  (fma 0.20833333333333334 (pow x 4) 1.0)
34.827 * * * [progress]: adding candidates to table
34.979 * [progress]: [Phase 3 of 3] Extracting.
34.979 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))> #<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))>)
34.979 * * * [regime-changes]: Trying 3 branch expressions: ((+ (exp x) (exp (- x))) (/ 2.0 (+ (exp x) (exp (- x)))) x)
34.980 * * * * [regimes]: Trying to branch on (+ (exp x) (exp (- x))) from (#<alt (λ (x) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))> #<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))>)
34.996 * * * * [regimes]: Trying to branch on (/ 2.0 (+ (exp x) (exp (- x)))) from (#<alt (λ (x) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))> #<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))>)
35.010 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (- (fma 0.20833333333333334 (pow x 4) 1.0) (* 0.5 (pow x 2))))> #<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))>)
35.021 * * * [regime]: Found split indices: #<option (#s(si 1 255))>
35.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ 2.0 (+ (exp x) (exp (- x))))
35.021 * * [simplify]: iteration  0 :  7  enodes  (cost  8 )
35.022 * * [simplify]: iteration  1 :  8  enodes  (cost  8 )
35.022 * * [simplify]: iteration  done :  8  enodes  (cost  8 )
35.022 * [simplify]: Simplified to:
   (/ 2.0 (+ (exp x) (exp (- x))))
35.401 * [regime-testing]: Baseline error score: 0.008314761220693453
35.401 * [regime-testing]: Oracle error score: 0.0036985826354195717
35.402 * [regime-testing]: End program error score: 0.008314761220693453