42.497 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.020 * * * [progress]: [2/2] Setting up program.
0.021 * [progress]: [Phase 2 of 3] Improving.
0.022 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (* 4.0 (- (- x y) (* z 0.5))) z)
0.024 * * [simplify]: iteration  0 :  20  enodes  (cost  5 )
0.025 * * [simplify]: iteration  1 :  47  enodes  (cost  5 )
0.027 * * [simplify]: iteration  2 :  138  enodes  (cost  5 )
0.029 * * [simplify]: iteration  3 :  317  enodes  (cost  5 )
0.034 * * [simplify]: iteration  4 :  611  enodes  (cost  5 )
0.041 * * [simplify]: iteration  5 :  1239  enodes  (cost  5 )
0.052 * * [simplify]: iteration  6 :  1919  enodes  (cost  5 )
0.073 * * [simplify]: iteration  7 :  5001  enodes  (cost  5 )
0.073 * [simplify]: Simplified to:
   (/ (* 4.0 (- (- x y) (* z 0.5))) z)
0.074 * * [progress]: iteration 1 / 4
0.074 * * * [progress]: picking best candidate
0.075 * * * * [pick]: Picked  #<alt (λ (x y z) (/ (* 4.0 (- (- x y) (* z 0.5))) z))>
0.075 * * * [progress]: localizing error
0.085 * * * [progress]: generating rewritten candidates
0.085 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.095 * * * [progress]: generating series expansions
0.095 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.095 * [approximate]: Taking taylor expansion of (* 4.0 (/ (- x (+ (* 0.5 z) y)) z)) in (x y z) around 0
0.095 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- x (+ (* 0.5 z) y)) z)) in z
0.095 * [taylor]: Taking taylor expansion of 4.0 in z
0.095 * [taylor]: Taking taylor expansion of (/ (- x (+ (* 0.5 z) y)) z) in z
0.095 * [taylor]: Taking taylor expansion of (- x (+ (* 0.5 z) y)) in z
0.095 * [taylor]: Taking taylor expansion of x in z
0.095 * [taylor]: Taking taylor expansion of (+ (* 0.5 z) y) in z
0.095 * [taylor]: Taking taylor expansion of (* 0.5 z) in z
0.095 * [taylor]: Taking taylor expansion of 0.5 in z
0.095 * [taylor]: Taking taylor expansion of z in z
0.095 * [taylor]: Taking taylor expansion of y in z
0.095 * [taylor]: Taking taylor expansion of z in z
0.096 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- x (+ (* 0.5 z) y)) z)) in y
0.096 * [taylor]: Taking taylor expansion of 4.0 in y
0.096 * [taylor]: Taking taylor expansion of (/ (- x (+ (* 0.5 z) y)) z) in y
0.096 * [taylor]: Taking taylor expansion of (- x (+ (* 0.5 z) y)) in y
0.096 * [taylor]: Taking taylor expansion of x in y
0.096 * [taylor]: Taking taylor expansion of (+ (* 0.5 z) y) in y
0.096 * [taylor]: Taking taylor expansion of (* 0.5 z) in y
0.096 * [taylor]: Taking taylor expansion of 0.5 in y
0.096 * [taylor]: Taking taylor expansion of z in y
0.096 * [taylor]: Taking taylor expansion of y in y
0.096 * [taylor]: Taking taylor expansion of z in y
0.096 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- x (+ (* 0.5 z) y)) z)) in x
0.096 * [taylor]: Taking taylor expansion of 4.0 in x
0.096 * [taylor]: Taking taylor expansion of (/ (- x (+ (* 0.5 z) y)) z) in x
0.096 * [taylor]: Taking taylor expansion of (- x (+ (* 0.5 z) y)) in x
0.096 * [taylor]: Taking taylor expansion of x in x
0.096 * [taylor]: Taking taylor expansion of (+ (* 0.5 z) y) in x
0.097 * [taylor]: Taking taylor expansion of (* 0.5 z) in x
0.097 * [taylor]: Taking taylor expansion of 0.5 in x
0.097 * [taylor]: Taking taylor expansion of z in x
0.097 * [taylor]: Taking taylor expansion of y in x
0.097 * [taylor]: Taking taylor expansion of z in x
0.097 * [taylor]: Taking taylor expansion of (* 4.0 (/ (- x (+ (* 0.5 z) y)) z)) in x
0.097 * [taylor]: Taking taylor expansion of 4.0 in x
0.097 * [taylor]: Taking taylor expansion of (/ (- x (+ (* 0.5 z) y)) z) in x
0.097 * [taylor]: Taking taylor expansion of (- x (+ (* 0.5 z) y)) in x
0.097 * [taylor]: Taking taylor expansion of x in x
0.097 * [taylor]: Taking taylor expansion of (+ (* 0.5 z) y) in x
0.097 * [taylor]: Taking taylor expansion of (* 0.5 z) in x
0.097 * [taylor]: Taking taylor expansion of 0.5 in x
0.097 * [taylor]: Taking taylor expansion of z in x
0.097 * [taylor]: Taking taylor expansion of y in x
0.097 * [taylor]: Taking taylor expansion of z in x
0.097 * [taylor]: Taking taylor expansion of (* -4.0 (/ (+ (* 0.5 z) y) z)) in y
0.097 * [taylor]: Taking taylor expansion of -4.0 in y
0.097 * [taylor]: Taking taylor expansion of (/ (+ (* 0.5 z) y) z) in y
0.097 * [taylor]: Taking taylor expansion of (+ (* 0.5 z) y) in y
0.097 * [taylor]: Taking taylor expansion of (* 0.5 z) in y
0.097 * [taylor]: Taking taylor expansion of 0.5 in y
0.097 * [taylor]: Taking taylor expansion of z in y
0.097 * [taylor]: Taking taylor expansion of y in y
0.097 * [taylor]: Taking taylor expansion of z in y
0.098 * [taylor]: Taking taylor expansion of -2.0 in z
0.099 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 z)) in y
0.099 * [taylor]: Taking taylor expansion of 4.0 in y
0.099 * [taylor]: Taking taylor expansion of (/ 1 z) in y
0.099 * [taylor]: Taking taylor expansion of z in y
0.099 * [taylor]: Taking taylor expansion of (/ 4.0 z) in z
0.099 * [taylor]: Taking taylor expansion of 4.0 in z
0.099 * [taylor]: Taking taylor expansion of z in z
0.100 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 z))) in z
0.100 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 z)) in z
0.100 * [taylor]: Taking taylor expansion of 4.0 in z
0.100 * [taylor]: Taking taylor expansion of (/ 1 z) in z
0.100 * [taylor]: Taking taylor expansion of z in z
0.102 * [approximate]: Taking taylor expansion of (* 4.0 (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z)) in (x y z) around 0
0.102 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z)) in z
0.102 * [taylor]: Taking taylor expansion of 4.0 in z
0.102 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z) in z
0.102 * [taylor]: Taking taylor expansion of (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) in z
0.102 * [taylor]: Taking taylor expansion of (/ 1 x) in z
0.102 * [taylor]: Taking taylor expansion of x in z
0.102 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in z
0.102 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in z
0.102 * [taylor]: Taking taylor expansion of 0.5 in z
0.102 * [taylor]: Taking taylor expansion of (/ 1 z) in z
0.102 * [taylor]: Taking taylor expansion of z in z
0.102 * [taylor]: Taking taylor expansion of (/ 1 y) in z
0.103 * [taylor]: Taking taylor expansion of y in z
0.103 * [taylor]: Taking taylor expansion of z in z
0.103 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z)) in y
0.103 * [taylor]: Taking taylor expansion of 4.0 in y
0.103 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z) in y
0.103 * [taylor]: Taking taylor expansion of (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.103 * [taylor]: Taking taylor expansion of x in y
0.103 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in y
0.103 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in y
0.103 * [taylor]: Taking taylor expansion of 0.5 in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 z) in y
0.103 * [taylor]: Taking taylor expansion of z in y
0.103 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.103 * [taylor]: Taking taylor expansion of y in y
0.103 * [taylor]: Taking taylor expansion of z in y
0.103 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z)) in x
0.103 * [taylor]: Taking taylor expansion of 4.0 in x
0.103 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z) in x
0.103 * [taylor]: Taking taylor expansion of (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) in x
0.103 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.103 * [taylor]: Taking taylor expansion of x in x
0.103 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in x
0.103 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in x
0.104 * [taylor]: Taking taylor expansion of 0.5 in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 z) in x
0.104 * [taylor]: Taking taylor expansion of z in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.104 * [taylor]: Taking taylor expansion of y in x
0.104 * [taylor]: Taking taylor expansion of z in x
0.104 * [taylor]: Taking taylor expansion of (* 4.0 (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z)) in x
0.104 * [taylor]: Taking taylor expansion of 4.0 in x
0.104 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) z) in x
0.104 * [taylor]: Taking taylor expansion of (- (/ 1 x) (+ (* 0.5 (/ 1 z)) (/ 1 y))) in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.104 * [taylor]: Taking taylor expansion of x in x
0.104 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in x
0.104 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in x
0.104 * [taylor]: Taking taylor expansion of 0.5 in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 z) in x
0.104 * [taylor]: Taking taylor expansion of z in x
0.104 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.104 * [taylor]: Taking taylor expansion of y in x
0.104 * [taylor]: Taking taylor expansion of z in x
0.105 * [taylor]: Taking taylor expansion of (* 4.0 z) in y
0.105 * [taylor]: Taking taylor expansion of 4.0 in y
0.105 * [taylor]: Taking taylor expansion of z in y
0.106 * [taylor]: Taking taylor expansion of (- (+ (* 4.0 (/ z y)) 2.0)) in y
0.106 * [taylor]: Taking taylor expansion of (+ (* 4.0 (/ z y)) 2.0) in y
0.106 * [taylor]: Taking taylor expansion of (* 4.0 (/ z y)) in y
0.106 * [taylor]: Taking taylor expansion of 4.0 in y
0.106 * [taylor]: Taking taylor expansion of (/ z y) in y
0.106 * [taylor]: Taking taylor expansion of z in y
0.106 * [taylor]: Taking taylor expansion of y in y
0.106 * [taylor]: Taking taylor expansion of 2.0 in y
0.106 * [taylor]: Taking taylor expansion of (- (* 4.0 z)) in z
0.106 * [taylor]: Taking taylor expansion of (* 4.0 z) in z
0.106 * [taylor]: Taking taylor expansion of 4.0 in z
0.106 * [taylor]: Taking taylor expansion of z in z
0.106 * [taylor]: Taking taylor expansion of (* 4.0 z) in z
0.106 * [taylor]: Taking taylor expansion of 4.0 in z
0.106 * [taylor]: Taking taylor expansion of z in z
0.108 * [taylor]: Taking taylor expansion of 0 in y
0.110 * [taylor]: Taking taylor expansion of (- 2.0) in z
0.110 * [taylor]: Taking taylor expansion of 2.0 in z
0.110 * [taylor]: Taking taylor expansion of 0 in z
0.114 * [taylor]: Taking taylor expansion of 0 in y
0.114 * [taylor]: Taking taylor expansion of 0 in z
0.116 * [taylor]: Taking taylor expansion of 0 in z
0.116 * [taylor]: Taking taylor expansion of 0 in z
0.120 * [approximate]: Taking taylor expansion of (* -4.0 (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)))) in (x y z) around 0
0.120 * [taylor]: Taking taylor expansion of (* -4.0 (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)))) in z
0.120 * [taylor]: Taking taylor expansion of -4.0 in z
0.120 * [taylor]: Taking taylor expansion of (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x))) in z
0.120 * [taylor]: Taking taylor expansion of z in z
0.120 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)) in z
0.120 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in z
0.120 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in z
0.120 * [taylor]: Taking taylor expansion of 0.5 in z
0.120 * [taylor]: Taking taylor expansion of (/ 1 z) in z
0.120 * [taylor]: Taking taylor expansion of z in z
0.120 * [taylor]: Taking taylor expansion of (/ 1 y) in z
0.120 * [taylor]: Taking taylor expansion of y in z
0.120 * [taylor]: Taking taylor expansion of (/ 1 x) in z
0.120 * [taylor]: Taking taylor expansion of x in z
0.120 * [taylor]: Taking taylor expansion of (* -4.0 (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)))) in y
0.121 * [taylor]: Taking taylor expansion of -4.0 in y
0.121 * [taylor]: Taking taylor expansion of (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x))) in y
0.121 * [taylor]: Taking taylor expansion of z in y
0.121 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)) in y
0.121 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in y
0.121 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in y
0.121 * [taylor]: Taking taylor expansion of 0.5 in y
0.121 * [taylor]: Taking taylor expansion of (/ 1 z) in y
0.121 * [taylor]: Taking taylor expansion of z in y
0.121 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.121 * [taylor]: Taking taylor expansion of y in y
0.121 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.121 * [taylor]: Taking taylor expansion of x in y
0.121 * [taylor]: Taking taylor expansion of (* -4.0 (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)))) in x
0.121 * [taylor]: Taking taylor expansion of -4.0 in x
0.121 * [taylor]: Taking taylor expansion of (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x))) in x
0.121 * [taylor]: Taking taylor expansion of z in x
0.121 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)) in x
0.121 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in x
0.121 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in x
0.121 * [taylor]: Taking taylor expansion of 0.5 in x
0.121 * [taylor]: Taking taylor expansion of (/ 1 z) in x
0.121 * [taylor]: Taking taylor expansion of z in x
0.121 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.121 * [taylor]: Taking taylor expansion of y in x
0.121 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.121 * [taylor]: Taking taylor expansion of x in x
0.122 * [taylor]: Taking taylor expansion of (* -4.0 (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)))) in x
0.122 * [taylor]: Taking taylor expansion of -4.0 in x
0.122 * [taylor]: Taking taylor expansion of (* z (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x))) in x
0.122 * [taylor]: Taking taylor expansion of z in x
0.122 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 z)) (/ 1 y)) (/ 1 x)) in x
0.122 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 z)) (/ 1 y)) in x
0.122 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 z)) in x
0.122 * [taylor]: Taking taylor expansion of 0.5 in x
0.122 * [taylor]: Taking taylor expansion of (/ 1 z) in x
0.122 * [taylor]: Taking taylor expansion of z in x
0.122 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.122 * [taylor]: Taking taylor expansion of y in x
0.122 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.122 * [taylor]: Taking taylor expansion of x in x
0.123 * [taylor]: Taking taylor expansion of (* 4.0 z) in y
0.123 * [taylor]: Taking taylor expansion of 4.0 in y
0.123 * [taylor]: Taking taylor expansion of z in y
0.124 * [taylor]: Taking taylor expansion of (- (+ (* 4.0 (/ z y)) 2.0)) in y
0.124 * [taylor]: Taking taylor expansion of (+ (* 4.0 (/ z y)) 2.0) in y
0.124 * [taylor]: Taking taylor expansion of (* 4.0 (/ z y)) in y
0.124 * [taylor]: Taking taylor expansion of 4.0 in y
0.124 * [taylor]: Taking taylor expansion of (/ z y) in y
0.124 * [taylor]: Taking taylor expansion of z in y
0.124 * [taylor]: Taking taylor expansion of y in y
0.124 * [taylor]: Taking taylor expansion of 2.0 in y
0.124 * [taylor]: Taking taylor expansion of (- (* 4.0 z)) in z
0.125 * [taylor]: Taking taylor expansion of (* 4.0 z) in z
0.125 * [taylor]: Taking taylor expansion of 4.0 in z
0.125 * [taylor]: Taking taylor expansion of z in z
0.125 * [taylor]: Taking taylor expansion of (* 4.0 z) in z
0.125 * [taylor]: Taking taylor expansion of 4.0 in z
0.125 * [taylor]: Taking taylor expansion of z in z
0.127 * [taylor]: Taking taylor expansion of 0 in y
0.128 * [taylor]: Taking taylor expansion of (- 2.0) in z
0.128 * [taylor]: Taking taylor expansion of 2.0 in z
0.128 * [taylor]: Taking taylor expansion of 0 in z
0.132 * [taylor]: Taking taylor expansion of 0 in y
0.132 * [taylor]: Taking taylor expansion of 0 in z
0.134 * [taylor]: Taking taylor expansion of 0 in z
0.135 * [taylor]: Taking taylor expansion of 0 in z
0.138 * * * [progress]: simplifying candidates
0.138 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (+ (log 4.0) (log (- (- x y) (* z 0.5)))) (log z))
  (- (log (* 4.0 (- (- x y) (* z 0.5)))) (log z))
  (log (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (exp (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (/ (* (* (* 4.0 4.0) 4.0) (* (* (- (- x y) (* z 0.5)) (- (- x y) (* z 0.5))) (- (- x y) (* z 0.5)))) (* (* z z) z))
  (/ (* (* (* 4.0 (- (- x y) (* z 0.5))) (* 4.0 (- (- x y) (* z 0.5)))) (* 4.0 (- (- x y) (* z 0.5)))) (* (* z z) z))
  (* (cbrt (/ (* 4.0 (- (- x y) (* z 0.5))) z)) (cbrt (/ (* 4.0 (- (- x y) (* z 0.5))) z)))
  (cbrt (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (* (* (/ (* 4.0 (- (- x y) (* z 0.5))) z) (/ (* 4.0 (- (- x y) (* z 0.5))) z)) (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (sqrt (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (sqrt (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (- (* 4.0 (- (- x y) (* z 0.5))))
  (- z)
  (/ 4.0 (* (cbrt z) (cbrt z)))
  (/ (- (- x y) (* z 0.5)) (cbrt z))
  (/ 4.0 (sqrt z))
  (/ (- (- x y) (* z 0.5)) (sqrt z))
  (/ 4.0 1)
  (/ (- (- x y) (* z 0.5)) z)
  (/ 1 z)
  (/ z (* 4.0 (- (- x y) (* z 0.5))))
  (/ (* 4.0 (- (- x y) (* z 0.5))) (* (cbrt z) (cbrt z)))
  (/ (* 4.0 (- (- x y) (* z 0.5))) (sqrt z))
  (/ (* 4.0 (- (- x y) (* z 0.5))) 1)
  (/ z (- (- x y) (* z 0.5)))
  (* z (+ (* (- x y) (- x y)) (+ (* (* z 0.5) (* z 0.5)) (* (- x y) (* z 0.5)))))
  (* z (+ (- x y) (* z 0.5)))
  (- (* 4.0 (/ x z)) (+ (* 4.0 (/ y z)) 2.0))
  (- (* 4.0 (/ x z)) (+ (* 4.0 (/ y z)) 2.0))
  (- (* 4.0 (/ x z)) (+ (* 4.0 (/ y z)) 2.0))
0.142 * * [simplify]: iteration  0 :  187  enodes  (cost  192 )
0.146 * * [simplify]: iteration  1 :  790  enodes  (cost  156 )
0.161 * * [simplify]: iteration  2 :  4301  enodes  (cost  156 )
0.229 * * [simplify]: iteration  3 :  5001  enodes  (cost  156 )
0.230 * [simplify]: Simplified to:
   (log (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (log (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (log (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (exp (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (pow (/ (* 4.0 (- (- x y) (* z 0.5))) z) 3)
  (pow (/ (* 4.0 (- (- x y) (* z 0.5))) z) 3)
  (* (cbrt (/ (* 4.0 (- (- x y) (* z 0.5))) z)) (cbrt (/ (* 4.0 (- (- x y) (* z 0.5))) z)))
  (cbrt (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (pow (/ (* 4.0 (- (- x y) (* z 0.5))) z) 3)
  (sqrt (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (sqrt (/ (* 4.0 (- (- x y) (* z 0.5))) z))
  (- (* 4.0 (- (- x y) (* z 0.5))))
  (- z)
  (/ 4.0 (* (cbrt z) (cbrt z)))
  (/ (- (- x y) (* z 0.5)) (cbrt z))
  (/ 4.0 (sqrt z))
  (/ (- (- x y) (* z 0.5)) (sqrt z))
  4.0
  (/ (- (- x y) (* z 0.5)) z)
  (/ 1 z)
  (/ z (* 4.0 (- (- x y) (* z 0.5))))
  (/ (* 4.0 (- (- x y) (* z 0.5))) (* (cbrt z) (cbrt z)))
  (/ (* 4.0 (- (- x y) (* z 0.5))) (sqrt z))
  (* 4.0 (- (- x y) (* z 0.5)))
  (/ z (- (- x y) (* z 0.5)))
  (* (+ (* (* z 0.5) (+ (* z 0.5) (- x y))) (* (- x y) (- x y))) z)
  (* z (+ (- x y) (* z 0.5)))
  (+ (* 4.0 (/ (- x y) z)) (- 2.0))
  (+ (* 4.0 (/ (- x y) z)) (- 2.0))
  (+ (* 4.0 (/ (- x y) z)) (- 2.0))
0.231 * * * [progress]: adding candidates to table
0.276 * * [progress]: iteration 2 / 4
0.276 * * * [progress]: picking best candidate
0.278 * * * * [pick]: Picked  #<alt (λ (x y z) (+ (* 4.0 (/ (- x y) z)) (- 2.0)))>
0.278 * * * [progress]: localizing error
0.285 * * * [progress]: generating rewritten candidates
0.285 * * * [progress]: generating series expansions
0.285 * * * [progress]: simplifying candidates
0.285 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.288 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.288 * [simplify]: Simplified to:
   
0.288 * * * [progress]: adding candidates to table
0.288 * [progress]: [Phase 3 of 3] Extracting.
0.290 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ (* 4.0 (/ (- x y) z)) (- 2.0))
0.291 * * [simplify]: iteration  0 :  12  enodes  (cost  5 )
0.291 * * [simplify]: iteration  1 :  12  enodes  (cost  5 )
0.291 * [simplify]: Simplified to:
   (+ (* 4.0 (/ (- x y) z)) (- 2.0))
0.876 * [regime-testing]: End program error score: 0.008126015751968996
0.895 * [regime-testing]: Target error score: 0.0084491764596476