37.964 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.029 * * * [progress]: [2/2] Setting up program.
0.032 * [progress]: [Phase 2 of 3] Improving.
0.032 * [simplify]: Simplifying:
  (/ (- x y) (* (* x 2.0) y))
0.032 * * [simplify]: Extracting # 0 : cost  0
0.032 * * [simplify]: Extracting # 1 : cost  0
0.033 * * [simplify]: Extracting # 2 : cost  0
0.033 * * [simplify]: Extracting # 3 : cost  0
0.033 * * [simplify]: Extracting # 4 : cost  0
0.033 * * [simplify]: iteration  0 :  7  enodes  (cost  9 )
0.035 * * [simplify]: Extracting # 0 : cost  0
0.035 * * [simplify]: Extracting # 1 : cost  0
0.036 * * [simplify]: Extracting # 2 : cost  0
0.036 * * [simplify]: iteration  1 :  18  enodes  (cost  9 )
0.043 * * [simplify]: Extracting # 0 : cost  0
0.043 * * [simplify]: Extracting # 1 : cost  0
0.043 * * [simplify]: Extracting # 2 : cost  0
0.043 * * [simplify]: iteration  2 :  47  enodes  (cost  9 )
0.063 * * [simplify]: Extracting # 0 : cost  0
0.064 * * [simplify]: Extracting # 1 : cost  0
0.064 * * [simplify]: Extracting # 2 : cost  0
0.064 * * [simplify]: Extracting # 3 : cost  0
0.064 * * [simplify]: iteration  3 :  102  enodes  (cost  9 )
0.100 * * [simplify]: Extracting # 0 : cost  0
0.100 * * [simplify]: Extracting # 1 : cost  0
0.100 * * [simplify]: Extracting # 2 : cost  0
0.100 * * [simplify]: iteration  4 :  150  enodes  (cost  9 )
0.124 * * [simplify]: Extracting # 0 : cost  0
0.124 * * [simplify]: Extracting # 1 : cost  0
0.125 * * [simplify]: Extracting # 2 : cost  0
0.125 * * [simplify]: iteration  5 :  168  enodes  (cost  9 )
0.162 * * [simplify]: Extracting # 0 : cost  0
0.162 * * [simplify]: Extracting # 1 : cost  0
0.162 * * [simplify]: Extracting # 2 : cost  0
0.162 * * [simplify]: iteration  6 :  181  enodes  (cost  9 )
0.199 * * [simplify]: Extracting # 0 : cost  0
0.199 * * [simplify]: Extracting # 1 : cost  0
0.200 * * [simplify]: Extracting # 2 : cost  0
0.200 * * [simplify]: iteration  7 :  185  enodes  (cost  9 )
0.243 * * [simplify]: Extracting # 0 : cost  0
0.243 * * [simplify]: Extracting # 1 : cost  0
0.244 * * [simplify]: iteration done:  185  enodes  (cost  9 )
0.244 * [simplify]: Simplified to:
  (/ (- x y) (* (* x 2.0) y))
0.244 * * [progress]: iteration 1 / 4
0.244 * * * [progress]: picking best candidate
0.245 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- x y) (* (* x 2.0) y)))>
0.245 * * * [progress]: localizing error
0.253 * * * [progress]: generating rewritten candidates
0.253 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.290 * * * [progress]: generating series expansions
0.290 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.290 * [backup-simplify]: Simplify (/ (- x y) (* (* x 2.0) y)) into (* 0.5 (/ (- x y) (* x y)))
0.290 * [approximate]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in (x y) around 0
0.290 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in y
0.290 * [taylor]: Taking taylor expansion of 0.5 in y
0.290 * [backup-simplify]: Simplify 0.5 into 0.5
0.290 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in y
0.290 * [taylor]: Taking taylor expansion of (- x y) in y
0.290 * [taylor]: Taking taylor expansion of x in y
0.290 * [backup-simplify]: Simplify x into x
0.290 * [taylor]: Taking taylor expansion of y in y
0.290 * [backup-simplify]: Simplify 0 into 0
0.290 * [backup-simplify]: Simplify 1 into 1
0.290 * [taylor]: Taking taylor expansion of (* x y) in y
0.290 * [taylor]: Taking taylor expansion of x in y
0.290 * [backup-simplify]: Simplify x into x
0.290 * [taylor]: Taking taylor expansion of y in y
0.290 * [backup-simplify]: Simplify 0 into 0
0.290 * [backup-simplify]: Simplify 1 into 1
0.291 * [backup-simplify]: Simplify (- 0) into 0
0.291 * [backup-simplify]: Simplify (+ x 0) into x
0.291 * [backup-simplify]: Simplify (* x 0) into 0
0.291 * [backup-simplify]: Simplify (+ (* x 1) (* 0 0)) into x
0.291 * [backup-simplify]: Simplify (/ x x) into 1
0.291 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.291 * [taylor]: Taking taylor expansion of 0.5 in x
0.291 * [backup-simplify]: Simplify 0.5 into 0.5
0.291 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.291 * [taylor]: Taking taylor expansion of (- x y) in x
0.291 * [taylor]: Taking taylor expansion of x in x
0.291 * [backup-simplify]: Simplify 0 into 0
0.291 * [backup-simplify]: Simplify 1 into 1
0.291 * [taylor]: Taking taylor expansion of y in x
0.291 * [backup-simplify]: Simplify y into y
0.291 * [taylor]: Taking taylor expansion of (* x y) in x
0.291 * [taylor]: Taking taylor expansion of x in x
0.291 * [backup-simplify]: Simplify 0 into 0
0.291 * [backup-simplify]: Simplify 1 into 1
0.291 * [taylor]: Taking taylor expansion of y in x
0.291 * [backup-simplify]: Simplify y into y
0.291 * [backup-simplify]: Simplify (- y) into (- y)
0.291 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.291 * [backup-simplify]: Simplify (* 0 y) into 0
0.292 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
0.292 * [backup-simplify]: Simplify (/ (- y) y) into -1
0.292 * [taylor]: Taking taylor expansion of (* 0.5 (/ (- x y) (* x y))) in x
0.292 * [taylor]: Taking taylor expansion of 0.5 in x
0.292 * [backup-simplify]: Simplify 0.5 into 0.5
0.292 * [taylor]: Taking taylor expansion of (/ (- x y) (* x y)) in x
0.292 * [taylor]: Taking taylor expansion of (- x y) in x
0.292 * [taylor]: Taking taylor expansion of x in x
0.292 * [backup-simplify]: Simplify 0 into 0
0.292 * [backup-simplify]: Simplify 1 into 1
0.292 * [taylor]: Taking taylor expansion of y in x
0.292 * [backup-simplify]: Simplify y into y
0.292 * [taylor]: Taking taylor expansion of (* x y) in x
0.292 * [taylor]: Taking taylor expansion of x in x
0.292 * [backup-simplify]: Simplify 0 into 0
0.292 * [backup-simplify]: Simplify 1 into 1
0.292 * [taylor]: Taking taylor expansion of y in x
0.292 * [backup-simplify]: Simplify y into y
0.292 * [backup-simplify]: Simplify (- y) into (- y)
0.292 * [backup-simplify]: Simplify (+ 0 (- y)) into (- y)
0.292 * [backup-simplify]: Simplify (* 0 y) into 0
0.292 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
0.292 * [backup-simplify]: Simplify (/ (- y) y) into -1
0.293 * [backup-simplify]: Simplify (* 0.5 -1) into -0.5
0.293 * [taylor]: Taking taylor expansion of -0.5 in y
0.293 * [backup-simplify]: Simplify -0.5 into -0.5
0.293 * [backup-simplify]: Simplify (- 0) into 0
0.293 * [backup-simplify]: Simplify (+ 1 0) into 1
0.294 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
0.294 * [backup-simplify]: Simplify (- (/ 1 y) (+ (* -1 (/ 0 y)))) into (/ 1 y)
0.294 * [backup-simplify]: Simplify (+ (* 0.5 (/ 1 y)) (* 0 -1)) into (* 0.5 (/ 1 y))
0.294 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
0.294 * [taylor]: Taking taylor expansion of 0.5 in y
0.294 * [backup-simplify]: Simplify 0.5 into 0.5
0.294 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.294 * [taylor]: Taking taylor expansion of y in y
0.294 * [backup-simplify]: Simplify 0 into 0
0.294 * [backup-simplify]: Simplify 1 into 1
0.295 * [backup-simplify]: Simplify (/ 1 1) into 1
0.295 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
0.295 * [backup-simplify]: Simplify 0.5 into 0.5
0.295 * [backup-simplify]: Simplify -0.5 into -0.5
0.295 * [backup-simplify]: Simplify (- 0) into 0
0.295 * [backup-simplify]: Simplify (+ 0 0) into 0
0.296 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 y)))) into 0
0.296 * [backup-simplify]: Simplify (- (/ 0 y) (+ (* -1 (/ 0 y)) (* (/ 1 y) (/ 0 y)))) into 0
0.297 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 (/ 1 y)) (* 0 -1))) into 0
0.297 * [taylor]: Taking taylor expansion of 0 in y
0.297 * [backup-simplify]: Simplify 0 into 0
0.297 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.298 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
0.298 * [backup-simplify]: Simplify 0 into 0
0.298 * [backup-simplify]: Simplify 0 into 0
0.298 * [backup-simplify]: Simplify (- 0) into 0
0.298 * [backup-simplify]: Simplify (+ 0 0) into 0
0.299 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
0.300 * [backup-simplify]: Simplify (- (/ 0 y) (+ (* -1 (/ 0 y)) (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.301 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 (/ 1 y)) (* 0 -1)))) into 0
0.301 * [taylor]: Taking taylor expansion of 0 in y
0.301 * [backup-simplify]: Simplify 0 into 0
0.301 * [backup-simplify]: Simplify 0 into 0
0.301 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.302 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
0.302 * [backup-simplify]: Simplify 0 into 0
0.302 * [backup-simplify]: Simplify 0 into 0
0.302 * [backup-simplify]: Simplify (- 0) into 0
0.303 * [backup-simplify]: Simplify (+ 0 0) into 0
0.304 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))))) into 0
0.304 * [backup-simplify]: Simplify (- (/ 0 y) (+ (* -1 (/ 0 y)) (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.305 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (/ 1 y)) (* 0 -1))))) into 0
0.305 * [taylor]: Taking taylor expansion of 0 in y
0.305 * [backup-simplify]: Simplify 0 into 0
0.305 * [backup-simplify]: Simplify 0 into 0
0.305 * [backup-simplify]: Simplify (+ (* -0.5 (* 1 (/ 1 x))) (* 0.5 (* (/ 1 y) 1))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.305 * [backup-simplify]: Simplify (/ (- (/ 1 x) (/ 1 y)) (* (* (/ 1 x) 2.0) (/ 1 y))) into (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y)))
0.305 * [approximate]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in (x y) around 0
0.305 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in y
0.305 * [taylor]: Taking taylor expansion of 0.5 in y
0.305 * [backup-simplify]: Simplify 0.5 into 0.5
0.305 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in y
0.305 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in y
0.305 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.305 * [taylor]: Taking taylor expansion of x in y
0.305 * [backup-simplify]: Simplify x into x
0.305 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
0.306 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.306 * [taylor]: Taking taylor expansion of y in y
0.306 * [backup-simplify]: Simplify 0 into 0
0.306 * [backup-simplify]: Simplify 1 into 1
0.306 * [backup-simplify]: Simplify (/ 1 1) into 1
0.306 * [taylor]: Taking taylor expansion of (* x y) in y
0.306 * [taylor]: Taking taylor expansion of x in y
0.306 * [backup-simplify]: Simplify x into x
0.306 * [taylor]: Taking taylor expansion of y in y
0.306 * [backup-simplify]: Simplify 0 into 0
0.306 * [backup-simplify]: Simplify 1 into 1
0.306 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.306 * [taylor]: Taking taylor expansion of 0.5 in x
0.306 * [backup-simplify]: Simplify 0.5 into 0.5
0.306 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.306 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.306 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.306 * [taylor]: Taking taylor expansion of x in x
0.306 * [backup-simplify]: Simplify 0 into 0
0.306 * [backup-simplify]: Simplify 1 into 1
0.307 * [backup-simplify]: Simplify (/ 1 1) into 1
0.307 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.307 * [taylor]: Taking taylor expansion of y in x
0.307 * [backup-simplify]: Simplify y into y
0.307 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.307 * [taylor]: Taking taylor expansion of (* x y) in x
0.307 * [taylor]: Taking taylor expansion of x in x
0.307 * [backup-simplify]: Simplify 0 into 0
0.307 * [backup-simplify]: Simplify 1 into 1
0.307 * [taylor]: Taking taylor expansion of y in x
0.307 * [backup-simplify]: Simplify y into y
0.307 * [taylor]: Taking taylor expansion of (* 0.5 (* (- (/ 1 x) (/ 1 y)) (* x y))) in x
0.307 * [taylor]: Taking taylor expansion of 0.5 in x
0.307 * [backup-simplify]: Simplify 0.5 into 0.5
0.307 * [taylor]: Taking taylor expansion of (* (- (/ 1 x) (/ 1 y)) (* x y)) in x
0.307 * [taylor]: Taking taylor expansion of (- (/ 1 x) (/ 1 y)) in x
0.307 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.307 * [taylor]: Taking taylor expansion of x in x
0.307 * [backup-simplify]: Simplify 0 into 0
0.307 * [backup-simplify]: Simplify 1 into 1
0.308 * [backup-simplify]: Simplify (/ 1 1) into 1
0.308 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.308 * [taylor]: Taking taylor expansion of y in x
0.308 * [backup-simplify]: Simplify y into y
0.308 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.308 * [taylor]: Taking taylor expansion of (* x y) in x
0.308 * [taylor]: Taking taylor expansion of x in x
0.308 * [backup-simplify]: Simplify 0 into 0
0.308 * [backup-simplify]: Simplify 1 into 1
0.308 * [taylor]: Taking taylor expansion of y in x
0.308 * [backup-simplify]: Simplify y into y
0.309 * [backup-simplify]: Simplify (+ 1 0) into 1
0.309 * [backup-simplify]: Simplify (* 0 y) into 0
0.309 * [backup-simplify]: Simplify (* 1 0) into 0
0.310 * [backup-simplify]: Simplify (* 0.5 0) into 0
0.310 * [taylor]: Taking taylor expansion of 0 in y
0.310 * [backup-simplify]: Simplify 0 into 0
0.310 * [backup-simplify]: Simplify (+ (* 0 0) (* 1 y)) into y
0.311 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.311 * [backup-simplify]: Simplify (- (/ 1 y)) into (- (/ 1 y))
0.311 * [backup-simplify]: Simplify (+ 0 (- (/ 1 y))) into (- (/ 1 y))
0.311 * [backup-simplify]: Simplify (+ (* 1 y) (* (- (/ 1 y)) 0)) into y
0.312 * [backup-simplify]: Simplify (+ (* 0.5 y) (* 0 0)) into (* 0.5 y)
0.312 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.312 * [taylor]: Taking taylor expansion of 0.5 in y
0.312 * [backup-simplify]: Simplify 0.5 into 0.5
0.312 * [taylor]: Taking taylor expansion of y in y
0.312 * [backup-simplify]: Simplify 0 into 0
0.312 * [backup-simplify]: Simplify 1 into 1
0.312 * [backup-simplify]: Simplify 0 into 0
0.313 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (* 0 y))) into 0
0.313 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.314 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.314 * [backup-simplify]: Simplify (- 0) into 0
0.314 * [backup-simplify]: Simplify (+ 0 0) into 0
0.315 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (- (/ 1 y)) y) (* 0 0))) into (- 1)
0.316 * [backup-simplify]: Simplify (+ (* 0.5 (- 1)) (+ (* 0 y) (* 0 0))) into (- 0.5)
0.316 * [taylor]: Taking taylor expansion of (- 0.5) in y
0.316 * [taylor]: Taking taylor expansion of 0.5 in y
0.317 * [backup-simplify]: Simplify 0.5 into 0.5
0.317 * [backup-simplify]: Simplify (* 0.5 0) into 0
0.317 * [backup-simplify]: Simplify 0 into 0
0.317 * [backup-simplify]: Simplify 0 into 0
0.318 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (* 0 y)))) into 0
0.319 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.319 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.320 * [backup-simplify]: Simplify (- 0) into 0
0.320 * [backup-simplify]: Simplify (+ 0 0) into 0
0.321 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (- (/ 1 y)) 0) (+ (* 0 y) (* 0 0)))) into 0
0.322 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 (- 1)) (+ (* 0 y) (* 0 0)))) into 0
0.322 * [taylor]: Taking taylor expansion of 0 in y
0.322 * [backup-simplify]: Simplify 0 into 0
0.323 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
0.323 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
0.325 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
0.325 * [backup-simplify]: Simplify 0.5 into 0.5
0.325 * [backup-simplify]: Simplify 0 into 0
0.327 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (* 0 y))))) into 0
0.327 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.328 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.328 * [backup-simplify]: Simplify (- 0) into 0
0.328 * [backup-simplify]: Simplify (+ 0 0) into 0
0.330 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (- (/ 1 y)) 0) (+ (* 0 0) (+ (* 0 y) (* 0 0))))) into 0
0.331 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 (- 1)) (+ (* 0 y) (* 0 0))))) into 0
0.331 * [taylor]: Taking taylor expansion of 0 in y
0.331 * [backup-simplify]: Simplify 0 into 0
0.332 * [backup-simplify]: Simplify 0 into 0
0.332 * [backup-simplify]: Simplify (- 0) into 0
0.332 * [backup-simplify]: Simplify 0 into 0
0.333 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
0.333 * [backup-simplify]: Simplify 0 into 0
0.333 * [backup-simplify]: Simplify 0 into 0
0.336 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))))) into 0
0.337 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.337 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.337 * [backup-simplify]: Simplify (- 0) into 0
0.338 * [backup-simplify]: Simplify (+ 0 0) into 0
0.340 * [backup-simplify]: Simplify (+ (* 1 0) (+ (* (- (/ 1 y)) 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 y) (* 0 0)))))) into 0
0.342 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (- 1)) (+ (* 0 y) (* 0 0)))))) into 0
0.342 * [taylor]: Taking taylor expansion of 0 in y
0.342 * [backup-simplify]: Simplify 0 into 0
0.342 * [backup-simplify]: Simplify 0 into 0
0.343 * [backup-simplify]: Simplify (+ (* 0.5 (* (/ 1 y) 1)) (* (- 0.5) (* 1 (/ 1 x)))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.343 * [backup-simplify]: Simplify (/ (- (/ 1 (- x)) (/ 1 (- y))) (* (* (/ 1 (- x)) 2.0) (/ 1 (- y)))) into (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x)))))
0.343 * [approximate]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in (x y) around 0
0.343 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in y
0.343 * [taylor]: Taking taylor expansion of 0.5 in y
0.343 * [backup-simplify]: Simplify 0.5 into 0.5
0.343 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in y
0.343 * [taylor]: Taking taylor expansion of x in y
0.343 * [backup-simplify]: Simplify x into x
0.343 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in y
0.343 * [taylor]: Taking taylor expansion of y in y
0.343 * [backup-simplify]: Simplify 0 into 0
0.344 * [backup-simplify]: Simplify 1 into 1
0.344 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in y
0.344 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.344 * [taylor]: Taking taylor expansion of y in y
0.344 * [backup-simplify]: Simplify 0 into 0
0.344 * [backup-simplify]: Simplify 1 into 1
0.344 * [backup-simplify]: Simplify (/ 1 1) into 1
0.344 * [taylor]: Taking taylor expansion of (/ 1 x) in y
0.344 * [taylor]: Taking taylor expansion of x in y
0.344 * [backup-simplify]: Simplify x into x
0.344 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
0.345 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.345 * [taylor]: Taking taylor expansion of 0.5 in x
0.345 * [backup-simplify]: Simplify 0.5 into 0.5
0.345 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.345 * [taylor]: Taking taylor expansion of x in x
0.345 * [backup-simplify]: Simplify 0 into 0
0.345 * [backup-simplify]: Simplify 1 into 1
0.345 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.345 * [taylor]: Taking taylor expansion of y in x
0.345 * [backup-simplify]: Simplify y into y
0.345 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.345 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.345 * [taylor]: Taking taylor expansion of y in x
0.345 * [backup-simplify]: Simplify y into y
0.345 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.345 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.345 * [taylor]: Taking taylor expansion of x in x
0.345 * [backup-simplify]: Simplify 0 into 0
0.345 * [backup-simplify]: Simplify 1 into 1
0.346 * [backup-simplify]: Simplify (/ 1 1) into 1
0.346 * [taylor]: Taking taylor expansion of (* 0.5 (* x (* y (- (/ 1 y) (/ 1 x))))) in x
0.346 * [taylor]: Taking taylor expansion of 0.5 in x
0.346 * [backup-simplify]: Simplify 0.5 into 0.5
0.346 * [taylor]: Taking taylor expansion of (* x (* y (- (/ 1 y) (/ 1 x)))) in x
0.346 * [taylor]: Taking taylor expansion of x in x
0.346 * [backup-simplify]: Simplify 0 into 0
0.346 * [backup-simplify]: Simplify 1 into 1
0.346 * [taylor]: Taking taylor expansion of (* y (- (/ 1 y) (/ 1 x))) in x
0.346 * [taylor]: Taking taylor expansion of y in x
0.346 * [backup-simplify]: Simplify y into y
0.346 * [taylor]: Taking taylor expansion of (- (/ 1 y) (/ 1 x)) in x
0.346 * [taylor]: Taking taylor expansion of (/ 1 y) in x
0.346 * [taylor]: Taking taylor expansion of y in x
0.346 * [backup-simplify]: Simplify y into y
0.346 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
0.346 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.346 * [taylor]: Taking taylor expansion of x in x
0.346 * [backup-simplify]: Simplify 0 into 0
0.346 * [backup-simplify]: Simplify 1 into 1
0.347 * [backup-simplify]: Simplify (/ 1 1) into 1
0.347 * [backup-simplify]: Simplify (- 1) into -1
0.348 * [backup-simplify]: Simplify (+ 0 -1) into -1
0.348 * [backup-simplify]: Simplify (* y -1) into (* -1 y)
0.348 * [backup-simplify]: Simplify (* 0 (* -1 y)) into 0
0.348 * [backup-simplify]: Simplify (* 0.5 0) into 0
0.348 * [taylor]: Taking taylor expansion of 0 in y
0.348 * [backup-simplify]: Simplify 0 into 0
0.349 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.350 * [backup-simplify]: Simplify (- 0) into 0
0.350 * [backup-simplify]: Simplify (+ (/ 1 y) 0) into (/ 1 y)
0.350 * [backup-simplify]: Simplify (+ (* y (/ 1 y)) (* 0 -1)) into 1
0.351 * [backup-simplify]: Simplify (+ (* 0 1) (* 1 (* -1 y))) into (- y)
0.351 * [backup-simplify]: Simplify (+ (* 0.5 (- y)) (* 0 0)) into (- (* 0.5 y))
0.351 * [taylor]: Taking taylor expansion of (- (* 0.5 y)) in y
0.351 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
0.351 * [taylor]: Taking taylor expansion of 0.5 in y
0.351 * [backup-simplify]: Simplify 0.5 into 0.5
0.351 * [taylor]: Taking taylor expansion of y in y
0.351 * [backup-simplify]: Simplify 0 into 0
0.351 * [backup-simplify]: Simplify 1 into 1
0.351 * [backup-simplify]: Simplify 0 into 0
0.351 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
0.352 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.352 * [backup-simplify]: Simplify (- 0) into 0
0.352 * [backup-simplify]: Simplify (+ 0 0) into 0
0.353 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 (/ 1 y)) (* 0 -1))) into 0
0.353 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 1) (* 0 (* -1 y)))) into 1
0.354 * [backup-simplify]: Simplify (+ (* 0.5 1) (+ (* 0 (- y)) (* 0 0))) into 0.5
0.354 * [taylor]: Taking taylor expansion of 0.5 in y
0.354 * [backup-simplify]: Simplify 0.5 into 0.5
0.354 * [backup-simplify]: Simplify (* 0.5 0) into 0
0.354 * [backup-simplify]: Simplify (- 0) into 0
0.354 * [backup-simplify]: Simplify 0 into 0
0.354 * [backup-simplify]: Simplify 0 into 0
0.354 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.355 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.355 * [backup-simplify]: Simplify (- 0) into 0
0.355 * [backup-simplify]: Simplify (+ 0 0) into 0
0.356 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 (/ 1 y)) (* 0 -1)))) into 0
0.356 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 1) (* 0 (* -1 y))))) into 0
0.357 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (+ (* 0 (- y)) (* 0 0)))) into 0
0.357 * [taylor]: Taking taylor expansion of 0 in y
0.357 * [backup-simplify]: Simplify 0 into 0
0.357 * [backup-simplify]: Simplify 0.5 into 0.5
0.358 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
0.358 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
0.359 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
0.359 * [backup-simplify]: Simplify 0 into 0
0.359 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.362 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.363 * [backup-simplify]: Simplify (- 0) into 0
0.363 * [backup-simplify]: Simplify (+ 0 0) into 0
0.364 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (/ 1 y)) (* 0 -1))))) into 0
0.365 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 1) (* 0 (* -1 y)))))) into 0
0.366 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (+ (* 0 (- y)) (* 0 0))))) into 0
0.366 * [taylor]: Taking taylor expansion of 0 in y
0.366 * [backup-simplify]: Simplify 0 into 0
0.366 * [backup-simplify]: Simplify 0 into 0
0.366 * [backup-simplify]: Simplify 0 into 0
0.367 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
0.367 * [backup-simplify]: Simplify (- 0) into 0
0.367 * [backup-simplify]: Simplify 0 into 0
0.367 * [backup-simplify]: Simplify 0 into 0
0.367 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
0.368 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.368 * [backup-simplify]: Simplify (- 0) into 0
0.368 * [backup-simplify]: Simplify (+ 0 0) into 0
0.369 * [backup-simplify]: Simplify (+ (* y 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 (/ 1 y)) (* 0 -1)))))) into 0
0.370 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (* 0 (* -1 y))))))) into 0
0.371 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 1) (+ (* 0 (- y)) (* 0 0)))))) into 0
0.371 * [taylor]: Taking taylor expansion of 0 in y
0.372 * [backup-simplify]: Simplify 0 into 0
0.372 * [backup-simplify]: Simplify 0 into 0
0.372 * [backup-simplify]: Simplify (+ (* (- 0.5) (* (/ 1 (- y)) 1)) (* 0.5 (* 1 (/ 1 (- x))))) into (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.372 * * * [progress]: simplifying candidates
0.373 * [simplify]: Simplifying:
  (expm1 (/ (- x y) (* (* x 2.0) y)))
  (log1p (/ (- x y) (* (* x 2.0) y)))
  (- (log (- x y)) (+ (+ (log x) (log 2.0)) (log y)))
  (- (log (- x y)) (+ (log (* x 2.0)) (log y)))
  (- (log (- x y)) (log (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (exp (/ (- x y) (* (* x 2.0) y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x x) x) (* (* 2.0 2.0) 2.0)) (* (* y y) y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x 2.0) (* x 2.0)) (* x 2.0)) (* (* y y) y)))
  (/ (* (* (- x y) (- x y)) (- x y)) (* (* (* (* x 2.0) y) (* (* x 2.0) y)) (* (* x 2.0) y)))
  (* (cbrt (/ (- x y) (* (* x 2.0) y))) (cbrt (/ (- x y) (* (* x 2.0) y))))
  (cbrt (/ (- x y) (* (* x 2.0) y)))
  (* (* (/ (- x y) (* (* x 2.0) y)) (/ (- x y) (* (* x 2.0) y))) (/ (- x y) (* (* x 2.0) y)))
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (- (- x y))
  (- (* (* x 2.0) y))
  (/ x (* (* x 2.0) y))
  (/ y (* (* x 2.0) y))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* x 2.0))
  (/ (cbrt (- x y)) y)
  (/ (sqrt (- x y)) (* x 2.0))
  (/ (sqrt (- x y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ (+ (sqrt x) (sqrt y)) (* x 2.0))
  (/ (- (sqrt x) (sqrt y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ 1 (* (* x 2.0) y))
  (/ (* (* x 2.0) y) (- x y))
  (/ (- x y) (* x 2.0))
  (/ (* (* x 2.0) y) (cbrt (- x y)))
  (/ (* (* x 2.0) y) (sqrt (- x y)))
  (/ (* (* x 2.0) y) (- x y))
  (/ (* (* x 2.0) y) (- (sqrt x) (sqrt y)))
  (/ (* (* x 2.0) y) (- x y))
  (* (* (* x 2.0) y) (+ (* x x) (+ (* y y) (* x y))))
  (* (* (* x 2.0) y) (+ x y))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
  (- (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
0.373 * * [simplify]: Extracting # 0 : cost  0
0.374 * * [simplify]: Extracting # 1 : cost  0
0.374 * * [simplify]: Extracting # 2 : cost  0
0.374 * * [simplify]: Extracting # 3 : cost  0
0.374 * * [simplify]: Extracting # 4 : cost  0
0.374 * * [simplify]: Extracting # 5 : cost  0
0.374 * * [simplify]: Extracting # 6 : cost  0
0.374 * * [simplify]: Extracting # 7 : cost  0
0.374 * * [simplify]: iteration  0 :  84  enodes  (cost  467 )
0.397 * * [simplify]: Extracting # 0 : cost  0
0.397 * * [simplify]: Extracting # 1 : cost  0
0.397 * * [simplify]: Extracting # 2 : cost  0
0.398 * * [simplify]: Extracting # 3 : cost  0
0.398 * * [simplify]: iteration  1 :  235  enodes  (cost  452 )
0.509 * * [simplify]: Extracting # 0 : cost  0
0.511 * * [simplify]: Extracting # 1 : cost  0
0.513 * * [simplify]: Extracting # 2 : cost  0
0.514 * * [simplify]: Extracting # 3 : cost  0
0.515 * * [simplify]: Extracting # 4 : cost  0
0.516 * * [simplify]: iteration  2 :  903  enodes  (cost  372 )
2.413 * * [simplify]: Extracting # 0 : cost  0
2.426 * * [simplify]: Extracting # 1 : cost  0
2.438 * * [simplify]: Extracting # 2 : cost  0
2.448 * * [simplify]: Extracting # 3 : cost  0
2.457 * * [simplify]: Extracting # 4 : cost  0
2.474 * * [simplify]: iteration  3 :  4863  enodes  (cost  370 )
3.789 * * [simplify]: Extracting # 0 : cost  0
3.795 * * [simplify]: Extracting # 1 : cost  0
3.801 * * [simplify]: iteration done:  5000  enodes  (cost  370 )
3.802 * [simplify]: Simplified to:
  (expm1 (/ (- x y) (* (* x 2.0) y)))
  (log1p (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (log (/ (- x y) (* (* x 2.0) y)))
  (exp (/ (- x y) (* (* x 2.0) y)))
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (* (cbrt (/ (- x y) (* (* x 2.0) y))) (cbrt (/ (- x y) (* (* x 2.0) y))))
  (cbrt (/ (- x y) (* (* x 2.0) y)))
  (pow (/ (- x y) (* (* x 2.0) y)) 3)
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (sqrt (/ (- x y) (* (* x 2.0) y)))
  (- (- x y))
  (- (* (* x 2.0) y))
  (/ 1 (* 2.0 y))
  (/ 1 (* x 2.0))
  (/ (* (cbrt (- x y)) (cbrt (- x y))) (* x 2.0))
  (/ (cbrt (- x y)) y)
  (/ (sqrt (- x y)) (* x 2.0))
  (/ (sqrt (- x y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ (+ (sqrt x) (sqrt y)) (* x 2.0))
  (/ (- (sqrt x) (sqrt y)) y)
  (/ 1 (* x 2.0))
  (/ (- x y) y)
  (/ 1 (* (* x 2.0) y))
  (/ (* (* x 2.0) y) (- x y))
  (/ (- x y) (* x 2.0))
  (/ (* (* x 2.0) y) (cbrt (- x y)))
  (/ (* (* x 2.0) y) (sqrt (- x y)))
  (/ (* (* x 2.0) y) (- x y))
  (/ (* (* x 2.0) y) (- (sqrt x) (sqrt y)))
  (/ (* (* x 2.0) y) (- x y))
  (* (* (* x 2.0) y) (fma x x (* y (+ x y))))
  (* (* (* x 2.0) y) (+ x y))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
  (- (/ 0.5 y) (/ 0.5 x))
3.802 * * * [progress]: adding candidates to table
3.862 * * [progress]: iteration 2 / 4
3.862 * * * [progress]: picking best candidate
3.863 * * * * [pick]: Picked  #<alt (λ (x y) (- (/ 0.5 y) (/ 0.5 x)))>
3.863 * * * [progress]: localizing error
3.868 * * * [progress]: generating rewritten candidates
3.868 * * * [progress]: generating series expansions
3.868 * * * [progress]: simplifying candidates
3.869 * [simplify]: Simplifying:
  
3.869 * * [simplify]: Extracting # 0 : cost  0
3.869 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
3.869 * * [simplify]: Extracting # 0 : cost  0
3.869 * * [simplify]: iteration done:  0  enodes  (cost  0 )
3.869 * [simplify]: Simplified to:
  
3.869 * * * [progress]: adding candidates to table
3.869 * [progress]: [Phase 3 of 3] Extracting.
3.870 * [simplify]: Simplifying:
  (- (/ 0.5 y) (/ 0.5 x))
3.870 * * [simplify]: Extracting # 0 : cost  0
3.870 * * [simplify]: Extracting # 1 : cost  0
3.870 * * [simplify]: Extracting # 2 : cost  0
3.870 * * [simplify]: Extracting # 3 : cost  0
3.870 * * [simplify]: Extracting # 4 : cost  0
3.870 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
3.871 * * [simplify]: Extracting # 0 : cost  0
3.871 * * [simplify]: iteration done:  6  enodes  (cost  7 )
3.871 * [simplify]: Simplified to:
  (- (/ 0.5 y) (/ 0.5 x))
4.887 * [regime-testing]: End program error score: 0.014501812726590823
4.921 * [regime-testing]: Target error score: 0.014501812726590823