1.819 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.071 * * * [progress]: [2/2] Setting up program.
0.073 * [progress]: [Phase 2 of 3] Improving.
0.073 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (log (+ x (sqrt (+ (* x x) 1.0))))
0.074 * * [simplify]: iteration  0 :  7  enodes  (cost  9 )
0.075 * * [simplify]: iteration  1 :  9  enodes  (cost  9 )
0.076 * * [simplify]: iteration  done :  9  enodes  (cost  9 )
0.076 * [simplify]: Simplified to:
   (log (+ x (sqrt (+ (* x x) 1.0))))
0.076 * * [progress]: iteration 1 / 4
0.076 * * * [progress]: picking best candidate
0.078 * * * * [pick]: Picked  #<alt (λ (x) (log (+ x (sqrt (+ (* x x) 1.0)))))>
0.078 * * * [progress]: localizing error
0.085 * * * [progress]: generating rewritten candidates
0.085 * * * * [progress]: [ 1 / 4 ] rewriting at (2 1 2)
0.089 * * * * [progress]: [ 2 / 4 ] rewriting at (2)
0.097 * * * * [progress]: [ 3 / 4 ] rewriting at (2 1)
0.105 * * * * [progress]: [ 4 / 4 ] rewriting at (2 1 2 1)
0.108 * * * [progress]: generating series expansions
0.108 * * * * [progress]: [ 1 / 4 ] generating series at (2 1 2)
0.108 * [approximate]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in (x) around 0
0.108 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in x
0.108 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.108 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.108 * [taylor]: Taking taylor expansion of x in x
0.109 * [taylor]: Taking taylor expansion of 1.0 in x
0.110 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in x
0.110 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.110 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.110 * [taylor]: Taking taylor expansion of x in x
0.110 * [taylor]: Taking taylor expansion of 1.0 in x
0.123 * [approximate]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in (x) around 0
0.123 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.123 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.123 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.123 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.123 * [taylor]: Taking taylor expansion of x in x
0.124 * [taylor]: Taking taylor expansion of 1.0 in x
0.126 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.126 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.126 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.126 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.126 * [taylor]: Taking taylor expansion of x in x
0.126 * [taylor]: Taking taylor expansion of 1.0 in x
0.136 * [approximate]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in (x) around 0
0.137 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.137 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.137 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.137 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.137 * [taylor]: Taking taylor expansion of x in x
0.137 * [taylor]: Taking taylor expansion of 1.0 in x
0.139 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.139 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.139 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.139 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.139 * [taylor]: Taking taylor expansion of x in x
0.140 * [taylor]: Taking taylor expansion of 1.0 in x
0.155 * * * * [progress]: [ 2 / 4 ] generating series at (2)
0.155 * [approximate]: Taking taylor expansion of (log (+ (sqrt (+ (pow x 2) 1.0)) x)) in (x) around 0
0.155 * [taylor]: Taking taylor expansion of (log (+ (sqrt (+ (pow x 2) 1.0)) x)) in x
0.155 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (pow x 2) 1.0)) x) in x
0.155 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in x
0.155 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.155 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.155 * [taylor]: Taking taylor expansion of x in x
0.155 * [taylor]: Taking taylor expansion of 1.0 in x
0.157 * [taylor]: Taking taylor expansion of x in x
0.158 * [taylor]: Taking taylor expansion of (log (+ (sqrt (+ (pow x 2) 1.0)) x)) in x
0.158 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (pow x 2) 1.0)) x) in x
0.158 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in x
0.158 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.158 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.158 * [taylor]: Taking taylor expansion of x in x
0.158 * [taylor]: Taking taylor expansion of 1.0 in x
0.159 * [taylor]: Taking taylor expansion of x in x
0.199 * [approximate]: Taking taylor expansion of (log (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x))) in (x) around 0
0.199 * [taylor]: Taking taylor expansion of (log (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x))) in x
0.199 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.199 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.199 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.199 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.199 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.199 * [taylor]: Taking taylor expansion of x in x
0.200 * [taylor]: Taking taylor expansion of 1.0 in x
0.201 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.201 * [taylor]: Taking taylor expansion of x in x
0.202 * [taylor]: Taking taylor expansion of (log (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x))) in x
0.202 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.202 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.202 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.202 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.202 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.202 * [taylor]: Taking taylor expansion of x in x
0.203 * [taylor]: Taking taylor expansion of 1.0 in x
0.205 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.205 * [taylor]: Taking taylor expansion of x in x
0.251 * [approximate]: Taking taylor expansion of (log (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x))) in (x) around 0
0.251 * [taylor]: Taking taylor expansion of (log (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x))) in x
0.251 * [taylor]: Taking taylor expansion of (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.251 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.251 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.252 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.252 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.252 * [taylor]: Taking taylor expansion of x in x
0.252 * [taylor]: Taking taylor expansion of 1.0 in x
0.254 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.254 * [taylor]: Taking taylor expansion of x in x
0.259 * [taylor]: Taking taylor expansion of (log (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x))) in x
0.259 * [taylor]: Taking taylor expansion of (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.259 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.259 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.259 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.259 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.259 * [taylor]: Taking taylor expansion of x in x
0.260 * [taylor]: Taking taylor expansion of 1.0 in x
0.262 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.262 * [taylor]: Taking taylor expansion of x in x
0.325 * * * * [progress]: [ 3 / 4 ] generating series at (2 1)
0.325 * [approximate]: Taking taylor expansion of (+ (sqrt (+ (pow x 2) 1.0)) x) in (x) around 0
0.325 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (pow x 2) 1.0)) x) in x
0.325 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in x
0.325 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.325 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.325 * [taylor]: Taking taylor expansion of x in x
0.325 * [taylor]: Taking taylor expansion of 1.0 in x
0.326 * [taylor]: Taking taylor expansion of x in x
0.326 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (pow x 2) 1.0)) x) in x
0.327 * [taylor]: Taking taylor expansion of (sqrt (+ (pow x 2) 1.0)) in x
0.327 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.327 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.327 * [taylor]: Taking taylor expansion of x in x
0.327 * [taylor]: Taking taylor expansion of 1.0 in x
0.328 * [taylor]: Taking taylor expansion of x in x
0.334 * [approximate]: Taking taylor expansion of (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in (x) around 0
0.334 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.334 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.334 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.334 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.334 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.334 * [taylor]: Taking taylor expansion of x in x
0.334 * [taylor]: Taking taylor expansion of 1.0 in x
0.336 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.336 * [taylor]: Taking taylor expansion of x in x
0.336 * [taylor]: Taking taylor expansion of (+ (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.336 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.336 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.336 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.336 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.336 * [taylor]: Taking taylor expansion of x in x
0.337 * [taylor]: Taking taylor expansion of 1.0 in x
0.339 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.339 * [taylor]: Taking taylor expansion of x in x
0.351 * [approximate]: Taking taylor expansion of (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in (x) around 0
0.351 * [taylor]: Taking taylor expansion of (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.351 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.351 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.351 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.351 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.351 * [taylor]: Taking taylor expansion of x in x
0.352 * [taylor]: Taking taylor expansion of 1.0 in x
0.353 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.354 * [taylor]: Taking taylor expansion of x in x
0.354 * [taylor]: Taking taylor expansion of (- (sqrt (+ (/ 1 (pow x 2)) 1.0)) (/ 1 x)) in x
0.354 * [taylor]: Taking taylor expansion of (sqrt (+ (/ 1 (pow x 2)) 1.0)) in x
0.354 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.354 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.354 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.354 * [taylor]: Taking taylor expansion of x in x
0.354 * [taylor]: Taking taylor expansion of 1.0 in x
0.356 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.356 * [taylor]: Taking taylor expansion of x in x
0.379 * * * * [progress]: [ 4 / 4 ] generating series at (2 1 2 1)
0.379 * [approximate]: Taking taylor expansion of (+ (pow x 2) 1.0) in (x) around 0
0.379 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.379 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.379 * [taylor]: Taking taylor expansion of x in x
0.379 * [taylor]: Taking taylor expansion of 1.0 in x
0.379 * [taylor]: Taking taylor expansion of (+ (pow x 2) 1.0) in x
0.379 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.379 * [taylor]: Taking taylor expansion of x in x
0.379 * [taylor]: Taking taylor expansion of 1.0 in x
0.391 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in (x) around 0
0.391 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.391 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.391 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.391 * [taylor]: Taking taylor expansion of x in x
0.392 * [taylor]: Taking taylor expansion of 1.0 in x
0.392 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.392 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.392 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.392 * [taylor]: Taking taylor expansion of x in x
0.392 * [taylor]: Taking taylor expansion of 1.0 in x
0.403 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in (x) around 0
0.404 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.404 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.404 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.404 * [taylor]: Taking taylor expansion of x in x
0.404 * [taylor]: Taking taylor expansion of 1.0 in x
0.404 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) 1.0) in x
0.404 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.404 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.404 * [taylor]: Taking taylor expansion of x in x
0.405 * [taylor]: Taking taylor expansion of 1.0 in x
0.416 * * * [progress]: simplifying candidates
0.417 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (log (sqrt (+ (* x x) 1.0)))
  (exp (sqrt (+ (* x x) 1.0)))
  (* (cbrt (sqrt (+ (* x x) 1.0))) (cbrt (sqrt (+ (* x x) 1.0))))
  (cbrt (sqrt (+ (* x x) 1.0)))
  (* (* (sqrt (+ (* x x) 1.0)) (sqrt (+ (* x x) 1.0))) (sqrt (+ (* x x) 1.0)))
  (sqrt (* (cbrt (+ (* x x) 1.0)) (cbrt (+ (* x x) 1.0))))
  (sqrt (cbrt (+ (* x x) 1.0)))
  (sqrt (sqrt (+ (* x x) 1.0)))
  (sqrt (sqrt (+ (* x x) 1.0)))
  (sqrt 1)
  (sqrt (+ (* x x) 1.0))
  (sqrt (+ (pow (* x x) 3) (pow 1.0 3)))
  (sqrt (+ (* (* x x) (* x x)) (- (* 1.0 1.0) (* (* x x) 1.0))))
  (sqrt (- (* (* x x) (* x x)) (* 1.0 1.0)))
  (sqrt (- (* x x) 1.0))
  (/ 1 2)
  (sqrt (sqrt (+ (* x x) 1.0)))
  (sqrt (sqrt (+ (* x x) 1.0)))
  (log (* (cbrt (+ x (sqrt (+ (* x x) 1.0)))) (cbrt (+ x (sqrt (+ (* x x) 1.0))))))
  (log (cbrt (+ x (sqrt (+ (* x x) 1.0)))))
  (log (sqrt (+ x (sqrt (+ (* x x) 1.0)))))
  (log (sqrt (+ x (sqrt (+ (* x x) 1.0)))))
  (log 1)
  (log (+ x (sqrt (+ (* x x) 1.0))))
  (log 1)
  (log (+ x (sqrt (+ (* x x) 1.0))))
  (log (+ (pow x 3) (pow (sqrt (+ (* x x) 1.0)) 3)))
  (log (+ (* x x) (- (* (sqrt (+ (* x x) 1.0)) (sqrt (+ (* x x) 1.0))) (* x (sqrt (+ (* x x) 1.0))))))
  (log (- (* x x) (* (sqrt (+ (* x x) 1.0)) (sqrt (+ (* x x) 1.0)))))
  (log (- x (sqrt (+ (* x x) 1.0))))
  (log (+ x (sqrt (+ (* x x) 1.0))))
  (log (log (+ x (sqrt (+ (* x x) 1.0)))))
  (exp (log (+ x (sqrt (+ (* x x) 1.0)))))
  (* (cbrt (log (+ x (sqrt (+ (* x x) 1.0))))) (cbrt (log (+ x (sqrt (+ (* x x) 1.0))))))
  (cbrt (log (+ x (sqrt (+ (* x x) 1.0)))))
  (* (* (log (+ x (sqrt (+ (* x x) 1.0)))) (log (+ x (sqrt (+ (* x x) 1.0))))) (log (+ x (sqrt (+ (* x x) 1.0)))))
  (sqrt (log (+ x (sqrt (+ (* x x) 1.0)))))
  (sqrt (log (+ x (sqrt (+ (* x x) 1.0)))))
  (* (exp x) (exp (sqrt (+ (* x x) 1.0))))
  (log (+ x (sqrt (+ (* x x) 1.0))))
  (exp (+ x (sqrt (+ (* x x) 1.0))))
  (* (cbrt (+ x (sqrt (+ (* x x) 1.0)))) (cbrt (+ x (sqrt (+ (* x x) 1.0)))))
  (cbrt (+ x (sqrt (+ (* x x) 1.0))))
  (* (* (+ x (sqrt (+ (* x x) 1.0))) (+ x (sqrt (+ (* x x) 1.0)))) (+ x (sqrt (+ (* x x) 1.0))))
  (sqrt (+ x (sqrt (+ (* x x) 1.0))))
  (sqrt (+ x (sqrt (+ (* x x) 1.0))))
  (+ (pow x 3) (pow (sqrt (+ (* x x) 1.0)) 3))
  (+ (* x x) (- (* (sqrt (+ (* x x) 1.0)) (sqrt (+ (* x x) 1.0))) (* x (sqrt (+ (* x x) 1.0)))))
  (- (* x x) (* (sqrt (+ (* x x) 1.0)) (sqrt (+ (* x x) 1.0))))
  (- x (sqrt (+ (* x x) 1.0)))
  (+ x (sqrt (+ (* x x) 1.0)))
  (* (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)
  (- (+ (sqrt 1.0) (* 1/2 (/ (pow x 2) (sqrt 1.0)))) (* 1/8 (/ (pow x 4) (pow (sqrt 1.0) 3))))
  (- (+ x (* 0.5 (/ 1 x))) (* 0.125 (/ 1 (pow x 3))))
  (- (* 0.125 (/ 1 (pow x 3))) (+ x (* 0.5 (/ 1 x))))
  (- (+ (log (sqrt 1.0)) (/ x (sqrt 1.0))) (* 1/6 (/ (pow x 3) (pow (sqrt 1.0) 3))))
  (- (+ (* 0.25 (/ 1 (pow x 2))) (log 2)) (+ (log (/ 1 x)) (* 0.09375 (/ 1 (pow x 4)))))
  (- (+ (log 0.5) (+ (* 0.125 (/ 1 (pow x 4))) (log (/ -1 x)))) (+ (* 0.25 (/ 1 (pow x 2))) (* 0.0078125 (/ 1 (* (pow x 4) (pow 0.5 2))))))
  (+ x (+ (sqrt 1.0) (* 1/2 (/ (pow x 2) (sqrt 1.0)))))
  (- (+ (* 2 x) (* 0.5 (/ 1 x))) (* 0.125 (/ 1 (pow x 3))))
  (- (* 0.125 (/ 1 (pow x 3))) (+ (* 0.5 (/ 1 x)) (* 0.0625 (/ 1 (pow x 5)))))
  (+ (pow x 2) 1.0)
  (+ (pow x 2) 1.0)
  (+ (pow x 2) 1.0)
0.420 * * [simplify]: iteration  0 :  141  enodes  (cost  885 )
0.442 * * [simplify]: iteration  1 :  334  enodes  (cost  812 )
0.507 * * [simplify]: iteration  2 :  981  enodes  (cost  719 )