14.207 * [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 )
0.015 * * [simplify]: iteration  2 :  12  enodes  (cost  8 )
0.016 * * [simplify]: iteration  done :  12  enodes  (cost  8 )
0.017 * [simplify]: Simplified to:
   (/ 2.0 (+ (exp x) (exp (- x))))
0.017 * * [progress]: iteration 1 / 4
0.017 * * * [progress]: picking best candidate
0.018 * * * * [pick]: Picked  #<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))>
0.018 * * * [progress]: localizing error
0.024 * * * [progress]: generating rewritten candidates
0.024 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.035 * * * [progress]: generating series expansions
0.035 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.035 * [approximate]: Taking taylor expansion of (/ 2.0 (+ (exp x) (exp (- x)))) in (x) around 0
0.036 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp x) (exp (- x)))) in x
0.036 * [taylor]: Taking taylor expansion of 2.0 in x
0.036 * [taylor]: Taking taylor expansion of (+ (exp x) (exp (- x))) in x
0.036 * [taylor]: Taking taylor expansion of (exp x) in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.036 * [taylor]: Taking taylor expansion of (exp (- x)) in x
0.036 * [taylor]: Taking taylor expansion of (- x) in x
0.036 * [taylor]: Taking taylor expansion of x in x
0.037 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp x) (exp (- x)))) in x
0.037 * [taylor]: Taking taylor expansion of 2.0 in x
0.037 * [taylor]: Taking taylor expansion of (+ (exp x) (exp (- x))) in x
0.037 * [taylor]: Taking taylor expansion of (exp x) in x
0.037 * [taylor]: Taking taylor expansion of x in x
0.037 * [taylor]: Taking taylor expansion of (exp (- x)) in x
0.037 * [taylor]: Taking taylor expansion of (- x) in x
0.037 * [taylor]: Taking taylor expansion of x in x
0.059 * [approximate]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (- (/ 1 x))))) in (x) around 0
0.059 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (- (/ 1 x))))) in x
0.059 * [taylor]: Taking taylor expansion of 2.0 in x
0.059 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (- (/ 1 x)))) in x
0.059 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
0.059 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.059 * [taylor]: Taking taylor expansion of x in x
0.060 * [taylor]: Taking taylor expansion of (exp (- (/ 1 x))) in x
0.060 * [taylor]: Taking taylor expansion of (- (/ 1 x)) in x
0.060 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.060 * [taylor]: Taking taylor expansion of x in x
0.060 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (- (/ 1 x))))) in x
0.061 * [taylor]: Taking taylor expansion of 2.0 in x
0.061 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (- (/ 1 x)))) in x
0.061 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
0.061 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.061 * [taylor]: Taking taylor expansion of x in x
0.061 * [taylor]: Taking taylor expansion of (exp (- (/ 1 x))) in x
0.061 * [taylor]: Taking taylor expansion of (- (/ 1 x)) in x
0.061 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.061 * [taylor]: Taking taylor expansion of x in x
0.066 * [approximate]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (/ -1 x)))) in (x) around 0
0.067 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (/ -1 x)))) in x
0.067 * [taylor]: Taking taylor expansion of 2.0 in x
0.067 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (/ -1 x))) in x
0.067 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
0.067 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.067 * [taylor]: Taking taylor expansion of x in x
0.067 * [taylor]: Taking taylor expansion of (exp (/ -1 x)) in x
0.067 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.067 * [taylor]: Taking taylor expansion of -1 in x
0.067 * [taylor]: Taking taylor expansion of x in x
0.068 * [taylor]: Taking taylor expansion of (/ 2.0 (+ (exp (/ 1 x)) (exp (/ -1 x)))) in x
0.068 * [taylor]: Taking taylor expansion of 2.0 in x
0.068 * [taylor]: Taking taylor expansion of (+ (exp (/ 1 x)) (exp (/ -1 x))) in x
0.068 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
0.068 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.068 * [taylor]: Taking taylor expansion of x in x
0.068 * [taylor]: Taking taylor expansion of (exp (/ -1 x)) in x
0.068 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.068 * [taylor]: Taking taylor expansion of -1 in x
0.068 * [taylor]: Taking taylor expansion of x in x
0.076 * * * [progress]: simplifying candidates
0.077 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (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)))
0.079 * * [simplify]: iteration  0 :  78  enodes  (cost  492 )
0.093 * * [simplify]: iteration  1 :  164  enodes  (cost  472 )
0.121 * * [simplify]: iteration  2 :  368  enodes  (cost  438 )
0.217 * * [simplify]: iteration  3 :  859  enodes  (cost  437 )
0.807 * * [simplify]: iteration  4 :  3092  enodes  (cost  437 )
2.056 * * [simplify]: iteration  done :  5000  enodes  (cost  437 )
2.057 * [simplify]: Simplified to:
   (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))))
  (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (/ 2.0 (+ (exp x) (exp (- x))))
  (/ 2.0 (+ (exp x) (exp (- x))))
2.057 * * * [progress]: adding candidates to table
2.129 * * [progress]: iteration 2 / 4
2.129 * * * [progress]: picking best candidate
2.132 * * * * [pick]: Picked  #<alt (λ (x) (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))>
2.132 * * * [progress]: localizing error
2.141 * * * [progress]: generating rewritten candidates
2.141 * * * * [progress]: [ 1 / 3 ] rewriting at (2)
2.165 * * * * [progress]: [ 2 / 3 ] rewriting at (2 2)
2.170 * * * * [progress]: [ 3 / 3 ] rewriting at (2 1 1)
2.177 * * * [progress]: generating series expansions
2.177 * * * * [progress]: [ 1 / 3 ] generating series at (2)
2.178 * [approximate]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))) in (x) around 0
2.178 * [taylor]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))) in x
2.178 * [taylor]: Taking taylor expansion of (+ (* 0.20833333333333334 (pow x 4)) 1.0) in x
2.178 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
2.178 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.178 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.178 * [taylor]: Taking taylor expansion of x in x
2.178 * [taylor]: Taking taylor expansion of 1.0 in x
2.178 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.178 * [taylor]: Taking taylor expansion of 0.5 in x
2.178 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.178 * [taylor]: Taking taylor expansion of x in x
2.178 * [taylor]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))) in x
2.178 * [taylor]: Taking taylor expansion of (+ (* 0.20833333333333334 (pow x 4)) 1.0) in x
2.178 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
2.178 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.178 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.178 * [taylor]: Taking taylor expansion of x in x
2.178 * [taylor]: Taking taylor expansion of 1.0 in x
2.178 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.178 * [taylor]: Taking taylor expansion of 0.5 in x
2.178 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.178 * [taylor]: Taking taylor expansion of x in x
2.188 * [approximate]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
2.188 * [taylor]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
2.188 * [taylor]: Taking taylor expansion of (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) in x
2.188 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (/ 1 (pow x 4))) in x
2.188 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.188 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.188 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.188 * [taylor]: Taking taylor expansion of x in x
2.189 * [taylor]: Taking taylor expansion of 1.0 in x
2.189 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.189 * [taylor]: Taking taylor expansion of 0.5 in x
2.189 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.189 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.189 * [taylor]: Taking taylor expansion of x in x
2.190 * [taylor]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
2.190 * [taylor]: Taking taylor expansion of (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) in x
2.190 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (/ 1 (pow x 4))) in x
2.190 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.190 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.190 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.190 * [taylor]: Taking taylor expansion of x in x
2.191 * [taylor]: Taking taylor expansion of 1.0 in x
2.191 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.191 * [taylor]: Taking taylor expansion of 0.5 in x
2.191 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.191 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.191 * [taylor]: Taking taylor expansion of x in x
2.206 * [approximate]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) (* 0.5 (/ 1 (pow x 2)))) in (x) around 0
2.206 * [taylor]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
2.206 * [taylor]: Taking taylor expansion of (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) in x
2.206 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (/ 1 (pow x 4))) in x
2.206 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.206 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.206 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.206 * [taylor]: Taking taylor expansion of x in x
2.207 * [taylor]: Taking taylor expansion of 1.0 in x
2.207 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.207 * [taylor]: Taking taylor expansion of 0.5 in x
2.207 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.207 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.207 * [taylor]: Taking taylor expansion of x in x
2.207 * [taylor]: Taking taylor expansion of (- (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) (* 0.5 (/ 1 (pow x 2)))) in x
2.207 * [taylor]: Taking taylor expansion of (+ (* 0.20833333333333334 (/ 1 (pow x 4))) 1.0) in x
2.207 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (/ 1 (pow x 4))) in x
2.207 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.207 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4)) in x
2.207 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.207 * [taylor]: Taking taylor expansion of x in x
2.208 * [taylor]: Taking taylor expansion of 1.0 in x
2.208 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow x 2))) in x
2.208 * [taylor]: Taking taylor expansion of 0.5 in x
2.208 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
2.208 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.208 * [taylor]: Taking taylor expansion of x in x
2.224 * * * * [progress]: [ 2 / 3 ] generating series at (2 2)
2.224 * [approximate]: Taking taylor expansion of (* 0.5 (pow x 2)) in (x) around 0
2.224 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.224 * [taylor]: Taking taylor expansion of 0.5 in x
2.224 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.224 * [taylor]: Taking taylor expansion of x in x
2.224 * [taylor]: Taking taylor expansion of (* 0.5 (pow x 2)) in x
2.224 * [taylor]: Taking taylor expansion of 0.5 in x
2.224 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.224 * [taylor]: Taking taylor expansion of x in x
2.232 * [approximate]: Taking taylor expansion of (/ 0.5 (pow x 2)) in (x) around 0
2.232 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.232 * [taylor]: Taking taylor expansion of 0.5 in x
2.232 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.232 * [taylor]: Taking taylor expansion of x in x
2.232 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.232 * [taylor]: Taking taylor expansion of 0.5 in x
2.232 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.232 * [taylor]: Taking taylor expansion of x in x
2.239 * [approximate]: Taking taylor expansion of (/ 0.5 (pow x 2)) in (x) around 0
2.240 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.240 * [taylor]: Taking taylor expansion of 0.5 in x
2.240 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.240 * [taylor]: Taking taylor expansion of x in x
2.240 * [taylor]: Taking taylor expansion of (/ 0.5 (pow x 2)) in x
2.240 * [taylor]: Taking taylor expansion of 0.5 in x
2.240 * [taylor]: Taking taylor expansion of (pow x 2) in x
2.240 * [taylor]: Taking taylor expansion of x in x
2.247 * * * * [progress]: [ 3 / 3 ] generating series at (2 1 1)
2.247 * [approximate]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in (x) around 0
2.247 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
2.247 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.247 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.247 * [taylor]: Taking taylor expansion of x in x
2.248 * [taylor]: Taking taylor expansion of (* 0.20833333333333334 (pow x 4)) in x
2.248 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.248 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.248 * [taylor]: Taking taylor expansion of x in x
2.261 * [approximate]: Taking taylor expansion of (/ 0.20833333333333334 (pow x 4)) in (x) around 0
2.261 * [taylor]: Taking taylor expansion of (/ 0.20833333333333334 (pow x 4)) in x
2.261 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.261 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.261 * [taylor]: Taking taylor expansion of x in x
2.262 * [taylor]: Taking taylor expansion of (/ 0.20833333333333334 (pow x 4)) in x
2.262 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.262 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.262 * [taylor]: Taking taylor expansion of x in x
2.272 * [approximate]: Taking taylor expansion of (/ 0.20833333333333334 (pow x 4)) in (x) around 0
2.273 * [taylor]: Taking taylor expansion of (/ 0.20833333333333334 (pow x 4)) in x
2.273 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.273 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.273 * [taylor]: Taking taylor expansion of x in x
2.273 * [taylor]: Taking taylor expansion of (/ 0.20833333333333334 (pow x 4)) in x
2.273 * [taylor]: Taking taylor expansion of 0.20833333333333334 in x
2.273 * [taylor]: Taking taylor expansion of (pow x 4) in x
2.273 * [taylor]: Taking taylor expansion of x in x
2.284 * * * [progress]: simplifying candidates
2.285 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (* (exp (* 0.20833333333333334 (pow x 4))) (exp 1.0)) (exp (* 0.5 (pow x 2))))
  (/ (exp (+ (* 0.20833333333333334 (pow x 4)) 1.0)) (exp (* 0.5 (pow x 2))))
  (log (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (exp (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (* (cbrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))) (cbrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))))
  (cbrt (- (+ (* 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)))) (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (sqrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (sqrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (- (pow (+ (* 0.20833333333333334 (pow x 4)) 1.0) 3) (pow (* 0.5 (pow x 2)) 3))
  (+ (* (+ (* 0.20833333333333334 (pow x 4)) 1.0) (+ (* 0.20833333333333334 (pow x 4)) 1.0)) (+ (* (* 0.5 (pow x 2)) (* 0.5 (pow x 2))) (* (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))))
  (- (* 0.5 (pow x 2)))
  (- (* (+ (* 0.20833333333333334 (pow x 4)) 1.0) (+ (* 0.20833333333333334 (pow x 4)) 1.0)) (* (* 0.5 (pow x 2)) (* 0.5 (pow x 2))))
  (+ (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (- 1.0 (* 0.5 (pow x 2)))
  (- (* 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))
  (+ (log 0.20833333333333334) (* (log x) 4))
  (+ (log 0.20833333333333334) (* (log x) 4))
  (+ (log 0.20833333333333334) (log (pow x 4)))
  (log (* 0.20833333333333334 (pow x 4)))
  (exp (* 0.20833333333333334 (pow x 4)))
  (* (* (* 0.20833333333333334 0.20833333333333334) 0.20833333333333334) (* (* (pow x 4) (pow x 4)) (pow x 4)))
  (* (cbrt (* 0.20833333333333334 (pow x 4))) (cbrt (* 0.20833333333333334 (pow x 4))))
  (cbrt (* 0.20833333333333334 (pow x 4)))
  (* (* (* 0.20833333333333334 (pow x 4)) (* 0.20833333333333334 (pow x 4))) (* 0.20833333333333334 (pow x 4)))
  (sqrt (* 0.20833333333333334 (pow x 4)))
  (sqrt (* 0.20833333333333334 (pow x 4)))
  (* (sqrt 0.20833333333333334) (pow (sqrt x) 4))
  (* (sqrt 0.20833333333333334) (pow (sqrt x) 4))
  (* (sqrt 0.20833333333333334) (sqrt (pow x 4)))
  (* (sqrt 0.20833333333333334) (sqrt (pow x 4)))
  (* (sqrt 0.20833333333333334) (pow x (/ 4 2)))
  (* (sqrt 0.20833333333333334) (pow x (/ 4 2)))
  (* 0.20833333333333334 (pow (* (cbrt x) (cbrt x)) 4))
  (* 0.20833333333333334 (pow (sqrt x) 4))
  (* 0.20833333333333334 (pow 1 4))
  (* 0.20833333333333334 (* (cbrt (pow x 4)) (cbrt (pow x 4))))
  (* 0.20833333333333334 (sqrt (pow x 4)))
  (* 0.20833333333333334 1)
  (* 0.20833333333333334 (pow x (/ 4 2)))
  (* (cbrt 0.20833333333333334) (pow x 4))
  (* (sqrt 0.20833333333333334) (pow x 4))
  (* 0.20833333333333334 (pow x 4))
  (- (+ (* 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))
  (* 0.20833333333333334 (pow x 4))
  (* 0.20833333333333334 (pow x 4))
2.288 * * [simplify]: iteration  0 :  121  enodes  (cost  780 )
2.314 * * [simplify]: iteration  1 :  270  enodes  (cost  715 )
2.391 * * [simplify]: iteration  2 :  828  enodes  (cost  647 )
2.685 * * [simplify]: iteration  3 :  2935  enodes  (cost  641 )
3.664 * * [simplify]: iteration  done :  5000  enodes  (cost  641 )
3.664 * [simplify]: Simplified to:
   (exp (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (exp (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (log (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (exp (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (* (cbrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))) (cbrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))))
  (cbrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (pow (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))) 3)
  (sqrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (sqrt (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))
  (- (pow (+ (* 0.20833333333333334 (pow x 4)) 1.0) 3) (pow (* 0.5 (pow x 2)) 3))
  (+ (* (* 0.5 0.5) (pow x 4)) (* (+ (+ (* 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) (+ (* 0.20833333333333334 (pow x 4)) 1.0)) (* (* 0.5 0.5) (pow x 4)))
  (+ (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2)))
  (- 1.0 (* 0.5 (pow x 2)))
  (- (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (log (* 0.5 (pow x 2)))
  (exp (* 0.5 (pow x 2)))
  (pow (* 0.5 (pow x 2)) 3)
  (* (cbrt (* 0.5 (pow x 2))) (cbrt (* 0.5 (pow x 2))))
  (cbrt (* 0.5 (pow x 2)))
  (pow (* 0.5 (pow x 2)) 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)
  (* (sqrt 0.5) (fabs x))
  (* (sqrt 0.5) (fabs x))
  (* (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))))
  (* 0.5 (fabs x))
  0.5
  (* 0.5 x)
  (* (cbrt 0.5) (pow x 2))
  (* (sqrt 0.5) (pow x 2))
  (* 0.5 (pow x 2))
  (log (* 0.20833333333333334 (pow x 4)))
  (log (* 0.20833333333333334 (pow x 4)))
  (log (* 0.20833333333333334 (pow x 4)))
  (log (* 0.20833333333333334 (pow x 4)))
  (exp (* 0.20833333333333334 (pow x 4)))
  (pow (* 0.20833333333333334 (pow x 4)) 3)
  (* (cbrt (* 0.20833333333333334 (pow x 4))) (cbrt (* 0.20833333333333334 (pow x 4))))
  (cbrt (* 0.20833333333333334 (pow x 4)))
  (pow (* 0.20833333333333334 (pow x 4)) 3)
  (sqrt (* 0.20833333333333334 (pow x 4)))
  (sqrt (* 0.20833333333333334 (pow x 4)))
  (* (sqrt 0.20833333333333334) (pow x 2))
  (* (sqrt 0.20833333333333334) (pow x 2))
  (* (sqrt 0.20833333333333334) (sqrt (pow x 4)))
  (* (sqrt 0.20833333333333334) (sqrt (pow x 4)))
  (* (sqrt 0.20833333333333334) (pow x 2))
  (* (sqrt 0.20833333333333334) (pow x 2))
  (* 0.20833333333333334 (pow (* (cbrt x) (cbrt x)) 4))
  (* 0.20833333333333334 (pow x 2))
  0.20833333333333334
  (* 0.20833333333333334 (* (cbrt (pow x 4)) (cbrt (pow x 4))))
  (* 0.20833333333333334 (sqrt (pow x 4)))
  0.20833333333333334
  (* 0.20833333333333334 (pow x 2))
  (* (cbrt 0.20833333333333334) (pow x 4))
  (* (sqrt 0.20833333333333334) (pow x 4))
  (* 0.20833333333333334 (pow x 4))
  (- (+ (* 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))
  (* 0.20833333333333334 (pow x 4))
  (* 0.20833333333333334 (pow x 4))
3.665 * * * [progress]: adding candidates to table
3.799 * [progress]: [Phase 3 of 3] Extracting.
3.799 * * [regime]: Finding splitpoints for: (#<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))> #<alt (λ (x) (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))>)
3.800 * * * [regime-changes]: Trying 3 branch expressions: ((+ (exp x) (exp (- x))) (/ 2.0 (+ (exp x) (exp (- x)))) x)
3.800 * * * * [regimes]: Trying to branch on (+ (exp x) (exp (- x))) from (#<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))> #<alt (λ (x) (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))>)
3.814 * * * * [regimes]: Trying to branch on (/ 2.0 (+ (exp x) (exp (- x)))) from (#<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))> #<alt (λ (x) (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))>)
3.830 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x) (/ 2.0 (+ (exp x) (exp (- x)))))> #<alt (λ (x) (- (+ (* 0.20833333333333334 (pow x 4)) 1.0) (* 0.5 (pow x 2))))>)
3.840 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
3.840 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ 2.0 (+ (exp x) (exp (- x))))
3.841 * * [simplify]: iteration  0 :  7  enodes  (cost  8 )
3.841 * * [simplify]: iteration  1 :  8  enodes  (cost  8 )
3.841 * * [simplify]: iteration  done :  8  enodes  (cost  8 )
3.841 * [simplify]: Simplified to:
   (/ 2.0 (+ (exp x) (exp (- x))))
4.219 * [regime-testing]: Baseline error score: 0.008314761220693453
4.219 * [regime-testing]: Oracle error score: 0.0036985826354195717
4.220 * [regime-testing]: End program error score: 0.008314761220693453