10.640 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.020 * * * [progress]: [2/2] Setting up program.
0.022 * [progress]: [Phase 2 of 3] Improving.
0.023 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (* 4.0 (- (- x y) (* z 0.5))) z)
0.024 * * [simplify]: iteration  0 :  10  enodes  (cost  11 )
0.025 * * [simplify]: iteration  1 :  20  enodes  (cost  11 )
0.027 * * [simplify]: iteration  2 :  47  enodes  (cost  11 )
0.034 * * [simplify]: iteration  3 :  129  enodes  (cost  11 )
0.053 * * [simplify]: iteration  4 :  270  enodes  (cost  11 )
0.113 * * [simplify]: iteration  5 :  497  enodes  (cost  11 )
0.216 * * [simplify]: iteration  6 :  780  enodes  (cost  11 )
0.444 * * [simplify]: iteration  7 :  1133  enodes  (cost  9 )
0.932 * * [simplify]: iteration  8 :  3817  enodes  (cost  9 )
3.251 * * [simplify]: iteration  done :  5001  enodes  (cost  9 )
3.251 * [simplify]: Simplified to:
   (* (- (/ (- x y) z) 0.5) 4.0)
3.254 * * [progress]: iteration 1 / 4
3.254 * * * [progress]: picking best candidate
3.256 * * * * [pick]: Picked  #<alt (λ (x y z) (* (- (/ (- x y) z) 0.5) 4.0))>
3.256 * * * [progress]: localizing error
3.262 * * * [progress]: generating rewritten candidates
3.262 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1 1)
3.271 * * * [progress]: generating series expansions
3.271 * * * * [progress]: [ 1 / 1 ] generating series at (2 1 1)
3.271 * [approximate]: Taking taylor expansion of (/ (- x y) z) in (x y z) around 0
3.271 * [taylor]: Taking taylor expansion of (/ (- x y) z) in z
3.271 * [taylor]: Taking taylor expansion of (- x y) in z
3.271 * [taylor]: Taking taylor expansion of x in z
3.272 * [taylor]: Taking taylor expansion of y in z
3.272 * [taylor]: Taking taylor expansion of z in z
3.272 * [taylor]: Taking taylor expansion of (/ (- x y) z) in y
3.272 * [taylor]: Taking taylor expansion of (- x y) in y
3.272 * [taylor]: Taking taylor expansion of x in y
3.272 * [taylor]: Taking taylor expansion of y in y
3.272 * [taylor]: Taking taylor expansion of z in y
3.272 * [taylor]: Taking taylor expansion of (/ (- x y) z) in x
3.272 * [taylor]: Taking taylor expansion of (- x y) in x
3.272 * [taylor]: Taking taylor expansion of x in x
3.272 * [taylor]: Taking taylor expansion of y in x
3.272 * [taylor]: Taking taylor expansion of z in x
3.272 * [taylor]: Taking taylor expansion of (/ (- x y) z) in x
3.272 * [taylor]: Taking taylor expansion of (- x y) in x
3.272 * [taylor]: Taking taylor expansion of x in x
3.272 * [taylor]: Taking taylor expansion of y in x
3.272 * [taylor]: Taking taylor expansion of z in x
3.273 * [taylor]: Taking taylor expansion of (* -1 (/ y z)) in y
3.273 * [taylor]: Taking taylor expansion of -1 in y
3.273 * [taylor]: Taking taylor expansion of (/ y z) in y
3.273 * [taylor]: Taking taylor expansion of y in y
3.273 * [taylor]: Taking taylor expansion of z in y
3.273 * [taylor]: Taking taylor expansion of (/ 1 z) in y
3.273 * [taylor]: Taking taylor expansion of z in y
3.273 * [taylor]: Taking taylor expansion of (/ 1 z) in z
3.273 * [taylor]: Taking taylor expansion of z in z
3.274 * [taylor]: Taking taylor expansion of (/ -1 z) in z
3.274 * [taylor]: Taking taylor expansion of -1 in z
3.274 * [taylor]: Taking taylor expansion of z in z
3.275 * [taylor]: Taking taylor expansion of 0 in y
3.275 * [taylor]: Taking taylor expansion of 0 in z
3.275 * [taylor]: Taking taylor expansion of 0 in z
3.275 * [taylor]: Taking taylor expansion of 0 in z
3.277 * [taylor]: Taking taylor expansion of 0 in y
3.277 * [taylor]: Taking taylor expansion of 0 in z
3.277 * [taylor]: Taking taylor expansion of 0 in z
3.277 * [taylor]: Taking taylor expansion of 0 in z
3.277 * [taylor]: Taking taylor expansion of 0 in z
3.278 * [approximate]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) z) in (x y z) around 0
3.278 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) z) in z
3.278 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in z
3.278 * [taylor]: Taking taylor expansion of (/ 1 x) in z
3.278 * [taylor]: Taking taylor expansion of x in z
3.278 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.278 * [taylor]: Taking taylor expansion of y in z
3.278 * [taylor]: Taking taylor expansion of z in z
3.278 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) z) in y
3.278 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
3.278 * [taylor]: Taking taylor expansion of (/ 1 x) in y
3.278 * [taylor]: Taking taylor expansion of x in y
3.278 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.279 * [taylor]: Taking taylor expansion of y in y
3.279 * [taylor]: Taking taylor expansion of z in y
3.279 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) z) in x
3.279 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
3.279 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.279 * [taylor]: Taking taylor expansion of x in x
3.279 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.279 * [taylor]: Taking taylor expansion of y in x
3.279 * [taylor]: Taking taylor expansion of z in x
3.279 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) z) in x
3.279 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
3.279 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.279 * [taylor]: Taking taylor expansion of x in x
3.280 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.280 * [taylor]: Taking taylor expansion of y in x
3.280 * [taylor]: Taking taylor expansion of z in x
3.280 * [taylor]: Taking taylor expansion of z in y
3.281 * [taylor]: Taking taylor expansion of (- (/ z y)) in y
3.281 * [taylor]: Taking taylor expansion of (/ z y) in y
3.281 * [taylor]: Taking taylor expansion of z in y
3.281 * [taylor]: Taking taylor expansion of y in y
3.281 * [taylor]: Taking taylor expansion of (- z) in z
3.281 * [taylor]: Taking taylor expansion of z in z
3.281 * [taylor]: Taking taylor expansion of z in z
3.283 * [taylor]: Taking taylor expansion of 0 in y
3.284 * [taylor]: Taking taylor expansion of 0 in z
3.284 * [taylor]: Taking taylor expansion of 0 in z
3.286 * [taylor]: Taking taylor expansion of 0 in y
3.286 * [taylor]: Taking taylor expansion of 0 in z
3.287 * [taylor]: Taking taylor expansion of 0 in z
3.287 * [taylor]: Taking taylor expansion of 0 in z
3.287 * [approximate]: Taking taylor expansion of (* -1 (* z (- (/ 1 y) (/ 1 x)))) in (x y z) around 0
3.287 * [taylor]: Taking taylor expansion of (* -1 (* z (- (/ 1 y) (/ 1 x)))) in z
3.287 * [taylor]: Taking taylor expansion of -1 in z
3.287 * [taylor]: Taking taylor expansion of (* z (- (/ 1 y) (/ 1 x))) in z
3.287 * [taylor]: Taking taylor expansion of z in z
3.287 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in z
3.287 * [taylor]: Taking taylor expansion of (/ 1 y) in z
3.287 * [taylor]: Taking taylor expansion of y in z
3.288 * [taylor]: Taking taylor expansion of (/ 1 x) in z
3.288 * [taylor]: Taking taylor expansion of x in z
3.288 * [taylor]: Taking taylor expansion of (* -1 (* z (- (/ 1 y) (/ 1 x)))) in y
3.288 * [taylor]: Taking taylor expansion of -1 in y
3.288 * [taylor]: Taking taylor expansion of (* z (- (/ 1 y) (/ 1 x))) in y
3.288 * [taylor]: Taking taylor expansion of z in y
3.288 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
3.288 * [taylor]: Taking taylor expansion of (/ 1 y) in y
3.288 * [taylor]: Taking taylor expansion of y in y
3.288 * [taylor]: Taking taylor expansion of (/ 1 x) in y
3.288 * [taylor]: Taking taylor expansion of x in y
3.288 * [taylor]: Taking taylor expansion of (* -1 (* z (- (/ 1 y) (/ 1 x)))) in x
3.288 * [taylor]: Taking taylor expansion of -1 in x
3.288 * [taylor]: Taking taylor expansion of (* z (- (/ 1 y) (/ 1 x))) in x
3.288 * [taylor]: Taking taylor expansion of z in x
3.288 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
3.288 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.288 * [taylor]: Taking taylor expansion of y in x
3.288 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.288 * [taylor]: Taking taylor expansion of x in x
3.289 * [taylor]: Taking taylor expansion of (* -1 (* z (- (/ 1 y) (/ 1 x)))) in x
3.289 * [taylor]: Taking taylor expansion of -1 in x
3.289 * [taylor]: Taking taylor expansion of (* z (- (/ 1 y) (/ 1 x))) in x
3.289 * [taylor]: Taking taylor expansion of z in x
3.289 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
3.289 * [taylor]: Taking taylor expansion of (/ 1 y) in x
3.289 * [taylor]: Taking taylor expansion of y in x
3.289 * [taylor]: Taking taylor expansion of (/ 1 x) in x
3.289 * [taylor]: Taking taylor expansion of x in x
3.290 * [taylor]: Taking taylor expansion of z in y
3.291 * [taylor]: Taking taylor expansion of (- (/ z y)) in y
3.291 * [taylor]: Taking taylor expansion of (/ z y) in y
3.291 * [taylor]: Taking taylor expansion of z in y
3.291 * [taylor]: Taking taylor expansion of y in y
3.291 * [taylor]: Taking taylor expansion of (- z) in z
3.291 * [taylor]: Taking taylor expansion of z in z
3.291 * [taylor]: Taking taylor expansion of z in z
3.293 * [taylor]: Taking taylor expansion of 0 in y
3.293 * [taylor]: Taking taylor expansion of 0 in z
3.293 * [taylor]: Taking taylor expansion of 0 in z
3.296 * [taylor]: Taking taylor expansion of 0 in y
3.296 * [taylor]: Taking taylor expansion of 0 in z
3.297 * [taylor]: Taking taylor expansion of 0 in z
3.297 * [taylor]: Taking taylor expansion of 0 in z
3.297 * * * [progress]: simplifying candidates
3.298 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (log (- x y)) (log z))
  (log (/ (- x y) z))
  (exp (/ (- x y) z))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* z z) z))
  (* (cbrt (/ (- x y) z)) (cbrt (/ (- x y) z)))
  (cbrt (/ (- x y) z))
  (* (* (/ (- x y) z) (/ (- x y) z)) (/ (- x y) z))
  (sqrt (/ (- x y) z))
  (sqrt (/ (- x y) z))
  (- (- x y))
  (- z)
  (/ x z)
  (/ y z)
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* (cbrt z) (cbrt z)))
  (/ (cbrt (- x y)) (cbrt z))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (sqrt z))
  (/ (cbrt (- x y)) (sqrt z))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) 1)
  (/ (cbrt (- x y)) z)
  (/ (sqrt (- x y)) (* (cbrt z) (cbrt z)))
  (/ (sqrt (- x y)) (cbrt z))
  (/ (sqrt (- x y)) (sqrt z))
  (/ (sqrt (- x y)) (sqrt z))
  (/ (sqrt (- x y)) 1)
  (/ (sqrt (- x y)) z)
  (/ 1 (* (cbrt z) (cbrt z)))
  (/ (- x y) (cbrt z))
  (/ 1 (sqrt z))
  (/ (- x y) (sqrt z))
  (/ 1 1)
  (/ (- x y) z)
  (/ (+ (sqrt x) (sqrt y)) (* (cbrt z) (cbrt z)))
  (/ (- (sqrt x) (sqrt y)) (cbrt z))
  (/ (+ (sqrt x) (sqrt y)) (sqrt z))
  (/ (- (sqrt x) (sqrt y)) (sqrt z))
  (/ (+ (sqrt x) (sqrt y)) 1)
  (/ (- (sqrt x) (sqrt y)) z)
  (/ 1 (* (cbrt z) (cbrt z)))
  (/ (- x y) (cbrt z))
  (/ 1 (sqrt z))
  (/ (- x y) (sqrt z))
  (/ 1 1)
  (/ (- x y) z)
  (/ 1 z)
  (/ z (- x y))
  (/ (- x y) (* (cbrt z) (cbrt z)))
  (/ (- x y) (sqrt z))
  (/ (- x y) 1)
  (/ z (cbrt (- x y)))
  (/ z (sqrt (- x y)))
  (/ z (- x y))
  (/ z (- (sqrt x) (sqrt y)))
  (/ z (- x y))
  (* z (+ (* x x) (+ (* y y) (* x y))))
  (* z (+ x y))
  (- (/ x z) (/ y z))
  (- (/ x z) (/ y z))
  (- (/ x z) (/ y z))
3.300 * * [simplify]: iteration  0 :  73  enodes  (cost  404 )
3.314 * * [simplify]: iteration  1 :  156  enodes  (cost  383 )
3.340 * * [simplify]: iteration  2 :  361  enodes  (cost  363 )
3.434 * * [simplify]: iteration  3 :  1049  enodes  (cost  363 )
3.931 * * [simplify]: iteration  4 :  2855  enodes  (cost  362 )
5.100 * * [simplify]: iteration  done :  5001  enodes  (cost  362 )
5.100 * [simplify]: Simplified to:
   (log (/ (- x y) z))
  (log (/ (- x y) z))
  (exp (/ (- x y) z))
  (pow (/ (- x y) z) 3)
  (* (cbrt (/ (- x y) z)) (cbrt (/ (- x y) z)))
  (cbrt (/ (- x y) z))
  (pow (/ (- x y) z) 3)
  (sqrt (/ (- x y) z))
  (sqrt (/ (- x y) z))
  (- y x)
  (- z)
  (/ x z)
  (/ y z)
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* (cbrt z) (cbrt z)))
  (/ (cbrt (- x y)) (cbrt z))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (sqrt z))
  (/ (cbrt (- x y)) (sqrt z))
  (* (cbrt (- x y)) (cbrt (- x y)))
  (/ (cbrt (- x y)) z)
  (/ (sqrt (- x y)) (* (cbrt z) (cbrt z)))
  (/ (sqrt (- x y)) (cbrt z))
  (/ (sqrt (- x y)) (sqrt z))
  (/ (sqrt (- x y)) (sqrt z))
  (sqrt (- x y))
  (/ (sqrt (- x y)) z)
  (/ 1 (* (cbrt z) (cbrt z)))
  (/ (- x y) (cbrt z))
  (/ 1 (sqrt z))
  (/ (- x y) (sqrt z))
  1
  (/ (- x y) z)
  (/ (+ (sqrt x) (sqrt y)) (* (cbrt z) (cbrt z)))
  (/ (- (sqrt x) (sqrt y)) (cbrt z))
  (/ (+ (sqrt x) (sqrt y)) (sqrt z))
  (/ (- (sqrt x) (sqrt y)) (sqrt z))
  (+ (sqrt x) (sqrt y))
  (/ (- (sqrt x) (sqrt y)) z)
  (/ 1 (* (cbrt z) (cbrt z)))
  (/ (- x y) (cbrt z))
  (/ 1 (sqrt z))
  (/ (- x y) (sqrt z))
  1
  (/ (- x y) z)
  (/ 1 z)
  (/ z (- x y))
  (/ (- x y) (* (cbrt z) (cbrt z)))
  (/ (- x y) (sqrt z))
  (- x y)
  (/ z (cbrt (- x y)))
  (/ z (sqrt (- x y)))
  (/ z (- x y))
  (/ z (- (sqrt x) (sqrt y)))
  (/ z (- x y))
  (* (+ (* y (+ x y)) (* x x)) z)
  (* (+ x y) z)
  (/ (- x y) z)
  (/ (- x y) z)
  (/ (- x y) z)
5.101 * * * [progress]: adding candidates to table
5.181 * [progress]: [Phase 3 of 3] Extracting.
5.182 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* (- (/ (- x y) z) 0.5) 4.0)
5.183 * * [simplify]: iteration  0 :  9  enodes  (cost  9 )
5.183 * * [simplify]: iteration  1 :  10  enodes  (cost  9 )
5.183 * * [simplify]: iteration  done :  10  enodes  (cost  9 )
5.183 * [simplify]: Simplified to:
   (* (- (/ (- x y) z) 0.5) 4.0)
5.715 * [regime-testing]: End program error score: 0.007416168032865028
5.737 * [regime-testing]: Target error score: 0.008489422502263847