3.860 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.029 * * * [progress]: [2/2] Setting up program.
0.031 * [progress]: [Phase 2 of 3] Improving.
0.031 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x x) (* (* y 4.0) (- (* z z) t)))
0.032 * * [simplify]: iteration  0 :  11  enodes  (cost  13 )
0.033 * * [simplify]: iteration  1 :  19  enodes  (cost  13 )
0.036 * * [simplify]: iteration  2 :  49  enodes  (cost  13 )
0.049 * * [simplify]: iteration  3 :  138  enodes  (cost  13 )
0.073 * * [simplify]: iteration  4 :  295  enodes  (cost  13 )
0.168 * * [simplify]: iteration  5 :  446  enodes  (cost  13 )
0.389 * * [simplify]: iteration  6 :  534  enodes  (cost  13 )
0.720 * * [simplify]: iteration  7 :  619  enodes  (cost  13 )
1.114 * * [simplify]: iteration  8 :  788  enodes  (cost  13 )
1.673 * * [simplify]: iteration  9 :  1130  enodes  (cost  13 )
2.793 * * [simplify]: iteration  done :  1130  enodes  (cost  13 )
2.793 * [simplify]: Simplified to:
   (- (* x x) (* (* y 4.0) (- (* z z) t)))
2.793 * * [progress]: iteration 1 / 4
2.793 * * * [progress]: picking best candidate
2.795 * * * * [pick]: Picked  #<alt (λ (x y z t) (- (* x x) (* (* y 4.0) (- (* z z) t))))>
2.795 * * * [progress]: localizing error
2.804 * * * [progress]: generating rewritten candidates
2.804 * * * * [progress]: [ 1 / 2 ] rewriting at (2 2)
2.817 * * * * [progress]: [ 2 / 2 ] rewriting at (2 2 2)
2.821 * * * [progress]: generating series expansions
2.821 * * * * [progress]: [ 1 / 2 ] generating series at (2 2)
2.821 * [approximate]: Taking taylor expansion of (* 4.0 (* (- (pow z 2) t) y)) in (y z t) around 0
2.821 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (pow z 2) t) y)) in t
2.821 * [taylor]: Taking taylor expansion of 4.0 in t
2.821 * [taylor]: Taking taylor expansion of (* (- (pow z 2) t) y) in t
2.821 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in t
2.821 * [taylor]: Taking taylor expansion of (pow z 2) in t
2.821 * [taylor]: Taking taylor expansion of z in t
2.821 * [taylor]: Taking taylor expansion of t in t
2.821 * [taylor]: Taking taylor expansion of y in t
2.821 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (pow z 2) t) y)) in z
2.821 * [taylor]: Taking taylor expansion of 4.0 in z
2.821 * [taylor]: Taking taylor expansion of (* (- (pow z 2) t) y) in z
2.821 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in z
2.821 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.821 * [taylor]: Taking taylor expansion of z in z
2.821 * [taylor]: Taking taylor expansion of t in z
2.821 * [taylor]: Taking taylor expansion of y in z
2.821 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (pow z 2) t) y)) in y
2.821 * [taylor]: Taking taylor expansion of 4.0 in y
2.821 * [taylor]: Taking taylor expansion of (* (- (pow z 2) t) y) in y
2.821 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in y
2.821 * [taylor]: Taking taylor expansion of (pow z 2) in y
2.821 * [taylor]: Taking taylor expansion of z in y
2.821 * [taylor]: Taking taylor expansion of t in y
2.821 * [taylor]: Taking taylor expansion of y in y
2.821 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (pow z 2) t) y)) in y
2.821 * [taylor]: Taking taylor expansion of 4.0 in y
2.822 * [taylor]: Taking taylor expansion of (* (- (pow z 2) t) y) in y
2.822 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in y
2.822 * [taylor]: Taking taylor expansion of (pow z 2) in y
2.822 * [taylor]: Taking taylor expansion of z in y
2.822 * [taylor]: Taking taylor expansion of t in y
2.822 * [taylor]: Taking taylor expansion of y in y
2.822 * [taylor]: Taking taylor expansion of 0 in z
2.822 * [taylor]: Taking taylor expansion of 0 in t
2.824 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow z 2)) (* 4.0 t)) in z
2.824 * [taylor]: Taking taylor expansion of (* 4.0 (pow z 2)) in z
2.824 * [taylor]: Taking taylor expansion of 4.0 in z
2.824 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.824 * [taylor]: Taking taylor expansion of z in z
2.824 * [taylor]: Taking taylor expansion of (* 4.0 t) in z
2.824 * [taylor]: Taking taylor expansion of 4.0 in z
2.824 * [taylor]: Taking taylor expansion of t in z
2.824 * [taylor]: Taking taylor expansion of (- (* 4.0 t)) in t
2.824 * [taylor]: Taking taylor expansion of (* 4.0 t) in t
2.824 * [taylor]: Taking taylor expansion of 4.0 in t
2.824 * [taylor]: Taking taylor expansion of t in t
2.825 * [taylor]: Taking taylor expansion of 0 in t
2.826 * [taylor]: Taking taylor expansion of 0 in z
2.826 * [taylor]: Taking taylor expansion of 0 in t
2.827 * [taylor]: Taking taylor expansion of 0 in t
2.827 * [approximate]: Taking taylor expansion of (* 4.0 (/ (- (/ 1 (pow z 2)) (/ 1 t)) y)) in (y z t) around 0
2.827 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- (/ 1 (pow z 2)) (/ 1 t)) y)) in t
2.827 * [taylor]: Taking taylor expansion of 4.0 in t
2.827 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow z 2)) (/ 1 t)) y) in t
2.827 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in t
2.827 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in t
2.827 * [taylor]: Taking taylor expansion of (pow z 2) in t
2.827 * [taylor]: Taking taylor expansion of z in t
2.828 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.828 * [taylor]: Taking taylor expansion of t in t
2.828 * [taylor]: Taking taylor expansion of y in t
2.828 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- (/ 1 (pow z 2)) (/ 1 t)) y)) in z
2.828 * [taylor]: Taking taylor expansion of 4.0 in z
2.829 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow z 2)) (/ 1 t)) y) in z
2.829 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in z
2.829 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.829 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.829 * [taylor]: Taking taylor expansion of z in z
2.829 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.829 * [taylor]: Taking taylor expansion of t in z
2.829 * [taylor]: Taking taylor expansion of y in z
2.829 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- (/ 1 (pow z 2)) (/ 1 t)) y)) in y
2.829 * [taylor]: Taking taylor expansion of 4.0 in y
2.829 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow z 2)) (/ 1 t)) y) in y
2.830 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in y
2.830 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in y
2.830 * [taylor]: Taking taylor expansion of (pow z 2) in y
2.830 * [taylor]: Taking taylor expansion of z in y
2.830 * [taylor]: Taking taylor expansion of (/ 1 t) in y
2.830 * [taylor]: Taking taylor expansion of t in y
2.830 * [taylor]: Taking taylor expansion of y in y
2.830 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- (/ 1 (pow z 2)) (/ 1 t)) y)) in y
2.830 * [taylor]: Taking taylor expansion of 4.0 in y
2.830 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow z 2)) (/ 1 t)) y) in y
2.830 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in y
2.830 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in y
2.830 * [taylor]: Taking taylor expansion of (pow z 2) in y
2.830 * [taylor]: Taking taylor expansion of z in y
2.830 * [taylor]: Taking taylor expansion of (/ 1 t) in y
2.830 * [taylor]: Taking taylor expansion of t in y
2.830 * [taylor]: Taking taylor expansion of y in y
2.831 * [taylor]: Taking taylor expansion of (* 4.0 (- (/ 1 (pow z 2)) (/ 1 t))) in z
2.831 * [taylor]: Taking taylor expansion of 4.0 in z
2.831 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in z
2.831 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.831 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.831 * [taylor]: Taking taylor expansion of z in z
2.835 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.835 * [taylor]: Taking taylor expansion of t in z
2.835 * [taylor]: Taking taylor expansion of 4.0 in t
2.837 * [taylor]: Taking taylor expansion of 0 in z
2.839 * [taylor]: Taking taylor expansion of 0 in t
2.841 * [taylor]: Taking taylor expansion of 0 in z
2.843 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 t))) in t
2.843 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 t)) in t
2.843 * [taylor]: Taking taylor expansion of 4.0 in t
2.843 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.843 * [taylor]: Taking taylor expansion of t in t
2.847 * [taylor]: Taking taylor expansion of 0 in z
2.848 * [taylor]: Taking taylor expansion of 0 in t
2.850 * [taylor]: Taking taylor expansion of 0 in t
2.856 * [taylor]: Taking taylor expansion of 0 in z
2.856 * [taylor]: Taking taylor expansion of 0 in t
2.856 * [taylor]: Taking taylor expansion of 0 in t
2.858 * [taylor]: Taking taylor expansion of 0 in t
2.859 * [approximate]: Taking taylor expansion of (* -4.0 (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y)) in (y z t) around 0
2.859 * [taylor]: Taking taylor expansion of (* -4.0 (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y)) in t
2.859 * [taylor]: Taking taylor expansion of -4.0 in t
2.859 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y) in t
2.859 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in t
2.859 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in t
2.859 * [taylor]: Taking taylor expansion of (pow z 2) in t
2.859 * [taylor]: Taking taylor expansion of z in t
2.859 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.859 * [taylor]: Taking taylor expansion of t in t
2.860 * [taylor]: Taking taylor expansion of y in t
2.860 * [taylor]: Taking taylor expansion of (* -4.0 (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y)) in z
2.860 * [taylor]: Taking taylor expansion of -4.0 in z
2.860 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y) in z
2.860 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in z
2.860 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.860 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.860 * [taylor]: Taking taylor expansion of z in z
2.861 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.861 * [taylor]: Taking taylor expansion of t in z
2.861 * [taylor]: Taking taylor expansion of y in z
2.861 * [taylor]: Taking taylor expansion of (* -4.0 (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y)) in y
2.861 * [taylor]: Taking taylor expansion of -4.0 in y
2.861 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y) in y
2.861 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in y
2.861 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in y
2.861 * [taylor]: Taking taylor expansion of (pow z 2) in y
2.861 * [taylor]: Taking taylor expansion of z in y
2.861 * [taylor]: Taking taylor expansion of (/ 1 t) in y
2.861 * [taylor]: Taking taylor expansion of t in y
2.861 * [taylor]: Taking taylor expansion of y in y
2.862 * [taylor]: Taking taylor expansion of (* -4.0 (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y)) in y
2.862 * [taylor]: Taking taylor expansion of -4.0 in y
2.862 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 (pow z 2)) (/ 1 t)) y) in y
2.862 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in y
2.862 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in y
2.862 * [taylor]: Taking taylor expansion of (pow z 2) in y
2.862 * [taylor]: Taking taylor expansion of z in y
2.862 * [taylor]: Taking taylor expansion of (/ 1 t) in y
2.862 * [taylor]: Taking taylor expansion of t in y
2.862 * [taylor]: Taking taylor expansion of y in y
2.862 * [taylor]: Taking taylor expansion of (* -4.0 (+ (/ 1 (pow z 2)) (/ 1 t))) in z
2.862 * [taylor]: Taking taylor expansion of -4.0 in z
2.862 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in z
2.862 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.862 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.862 * [taylor]: Taking taylor expansion of z in z
2.863 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.863 * [taylor]: Taking taylor expansion of t in z
2.864 * [taylor]: Taking taylor expansion of -4.0 in t
2.865 * [taylor]: Taking taylor expansion of 0 in z
2.867 * [taylor]: Taking taylor expansion of 0 in t
2.869 * [taylor]: Taking taylor expansion of 0 in z
2.871 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 t))) in t
2.871 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 t)) in t
2.871 * [taylor]: Taking taylor expansion of 4.0 in t
2.871 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.871 * [taylor]: Taking taylor expansion of t in t
2.875 * [taylor]: Taking taylor expansion of 0 in z
2.875 * [taylor]: Taking taylor expansion of 0 in t
2.877 * [taylor]: Taking taylor expansion of 0 in t
2.882 * [taylor]: Taking taylor expansion of 0 in z
2.882 * [taylor]: Taking taylor expansion of 0 in t
2.882 * [taylor]: Taking taylor expansion of 0 in t
2.885 * [taylor]: Taking taylor expansion of 0 in t
2.886 * * * * [progress]: [ 2 / 2 ] generating series at (2 2 2)
2.886 * [approximate]: Taking taylor expansion of (- (pow z 2) t) in (z t) around 0
2.886 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in t
2.886 * [taylor]: Taking taylor expansion of (pow z 2) in t
2.886 * [taylor]: Taking taylor expansion of z in t
2.886 * [taylor]: Taking taylor expansion of t in t
2.886 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in z
2.886 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.886 * [taylor]: Taking taylor expansion of z in z
2.886 * [taylor]: Taking taylor expansion of t in z
2.886 * [taylor]: Taking taylor expansion of (- (pow z 2) t) in z
2.886 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.886 * [taylor]: Taking taylor expansion of z in z
2.886 * [taylor]: Taking taylor expansion of t in z
2.886 * [taylor]: Taking taylor expansion of (- t) in t
2.886 * [taylor]: Taking taylor expansion of t in t
2.887 * [taylor]: Taking taylor expansion of 0 in t
2.888 * [taylor]: Taking taylor expansion of 1 in t
2.889 * [taylor]: Taking taylor expansion of 0 in t
2.890 * [approximate]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in (z t) around 0
2.890 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in t
2.890 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in t
2.890 * [taylor]: Taking taylor expansion of (pow z 2) in t
2.890 * [taylor]: Taking taylor expansion of z in t
2.890 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.890 * [taylor]: Taking taylor expansion of t in t
2.890 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in z
2.890 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.890 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.890 * [taylor]: Taking taylor expansion of z in z
2.891 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.891 * [taylor]: Taking taylor expansion of t in z
2.891 * [taylor]: Taking taylor expansion of (- (/ 1 (pow z 2)) (/ 1 t)) in z
2.891 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.891 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.891 * [taylor]: Taking taylor expansion of z in z
2.891 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.891 * [taylor]: Taking taylor expansion of t in z
2.892 * [taylor]: Taking taylor expansion of 1 in t
2.893 * [taylor]: Taking taylor expansion of 0 in t
2.894 * [taylor]: Taking taylor expansion of (- (/ 1 t)) in t
2.894 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.894 * [taylor]: Taking taylor expansion of t in t
2.896 * [taylor]: Taking taylor expansion of 0 in t
2.898 * [taylor]: Taking taylor expansion of 0 in t
2.899 * [approximate]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in (z t) around 0
2.899 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in t
2.899 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in t
2.899 * [taylor]: Taking taylor expansion of (pow z 2) in t
2.899 * [taylor]: Taking taylor expansion of z in t
2.899 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.899 * [taylor]: Taking taylor expansion of t in t
2.899 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in z
2.899 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.899 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.899 * [taylor]: Taking taylor expansion of z in z
2.900 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.900 * [taylor]: Taking taylor expansion of t in z
2.900 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow z 2)) (/ 1 t)) in z
2.900 * [taylor]: Taking taylor expansion of (/ 1 (pow z 2)) in z
2.900 * [taylor]: Taking taylor expansion of (pow z 2) in z
2.900 * [taylor]: Taking taylor expansion of z in z
2.900 * [taylor]: Taking taylor expansion of (/ 1 t) in z
2.900 * [taylor]: Taking taylor expansion of t in z
2.901 * [taylor]: Taking taylor expansion of 1 in t
2.902 * [taylor]: Taking taylor expansion of 0 in t
2.903 * [taylor]: Taking taylor expansion of (/ 1 t) in t
2.903 * [taylor]: Taking taylor expansion of t in t
2.905 * [taylor]: Taking taylor expansion of 0 in t
2.907 * [taylor]: Taking taylor expansion of 0 in t
2.907 * * * [progress]: simplifying candidates
2.908 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (* y 4.0) (- (* z z) t))
  (* (* y 4.0) (- (* z z) t))
  (+ (+ (log y) (log 4.0)) (log (- (* z z) t)))
  (+ (log (* y 4.0)) (log (- (* z z) t)))
  (log (* (* y 4.0) (- (* z z) t)))
  (exp (* (* y 4.0) (- (* z z) t)))
  (* (* (* (* y y) y) (* (* 4.0 4.0) 4.0)) (* (* (- (* z z) t) (- (* z z) t)) (- (* z z) t)))
  (* (* (* (* y 4.0) (* y 4.0)) (* y 4.0)) (* (* (- (* z z) t) (- (* z z) t)) (- (* z z) t)))
  (* (cbrt (* (* y 4.0) (- (* z z) t))) (cbrt (* (* y 4.0) (- (* z z) t))))
  (cbrt (* (* y 4.0) (- (* z z) t)))
  (* (* (* (* y 4.0) (- (* z z) t)) (* (* y 4.0) (- (* z z) t))) (* (* y 4.0) (- (* z z) t)))
  (sqrt (* (* y 4.0) (- (* z z) t)))
  (sqrt (* (* y 4.0) (- (* z z) t)))
  (* (* y 4.0) (* z z))
  (* (* y 4.0) (- t))
  (* (* y 4.0) (* z z))
  (* (* y 4.0) (- t))
  (* (* z z) (* y 4.0))
  (* (- t) (* y 4.0))
  (* (* z z) (* y 4.0))
  (* (- t) (* y 4.0))
  (* (* y 4.0) (* (cbrt (- (* z z) t)) (cbrt (- (* z z) t))))
  (* (* y 4.0) (sqrt (- (* z z) t)))
  (* (* y 4.0) 1)
  (* (* y 4.0) (+ z (sqrt t)))
  (* 4.0 (- (* z z) t))
  (* (* y 4.0) (- (pow (* z z) 3) (pow t 3)))
  (* (* y 4.0) (- (* (* z z) (* z z)) (* t t)))
  (/ (exp (* z z)) (exp t))
  (log (- (* z z) t))
  (exp (- (* z z) t))
  (* (cbrt (- (* z z) t)) (cbrt (- (* z z) t)))
  (cbrt (- (* z z) t))
  (* (* (- (* z z) t) (- (* z z) t)) (- (* z z) t))
  (sqrt (- (* z z) t))
  (sqrt (- (* z z) t))
  (- (pow (* z z) 3) (pow t 3))
  (+ (* (* z z) (* z z)) (+ (* t t) (* (* z z) t)))
  (- t)
  (- (* (* z z) (* z z)) (* t t))
  (+ (* z z) t)
  (+ z (sqrt t))
  (- z (sqrt t))
  (- t)
  0
  (- (* 4.0 (* (pow z 2) y)) (* 4.0 (* t y)))
  (- (* 4.0 (* (pow z 2) y)) (* 4.0 (* t y)))
  (- (pow z 2) t)
  (- (pow z 2) t)
  (- (pow z 2) t)
2.910 * * [simplify]: iteration  0 :  76  enodes  (cost  489 )
2.927 * * [simplify]: iteration  1 :  216  enodes  (cost  477 )
2.980 * * [simplify]: iteration  2 :  880  enodes  (cost  393 )