0.553 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.015 * * * [progress]: [2/2] Setting up program.
0.017 * [progress]: [Phase 2 of 3] Improving.
0.017 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
0.018 * * [simplify]: iteration  0 :  9  enodes  (cost  19 )
0.020 * * [simplify]: iteration  1 :  19  enodes  (cost  18 )
0.022 * * [simplify]: iteration  2 :  39  enodes  (cost  18 )
0.027 * * [simplify]: iteration  3 :  80  enodes  (cost  18 )
0.038 * * [simplify]: iteration  4 :  134  enodes  (cost  18 )
0.061 * * [simplify]: iteration  5 :  189  enodes  (cost  18 )
0.086 * * [simplify]: iteration  6 :  218  enodes  (cost  18 )
0.118 * * [simplify]: iteration  7 :  222  enodes  (cost  18 )
0.149 * * [simplify]: iteration  done :  222  enodes  (cost  18 )
0.149 * [simplify]: Simplified to:
   (/ (- (* x x) (* (* y 4.0) y)) (fma x x (* (* y 4.0) y)))
0.153 * * [progress]: iteration 1 / 4
0.153 * * * [progress]: picking best candidate
0.155 * * * * [pick]: Picked  #<alt (λ (x y) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))>
0.155 * * * [progress]: localizing error
0.163 * * * [progress]: generating rewritten candidates
0.163 * * * * [progress]: [ 1 / 2 ] rewriting at (2)
0.174 * * * * [progress]: [ 2 / 2 ] rewriting at (2 1)
0.179 * * * [progress]: generating series expansions
0.179 * * * * [progress]: [ 1 / 2 ] generating series at (2)
0.179 * [approximate]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in (x y) around 0
0.179 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in y
0.179 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in y
0.179 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.179 * [taylor]: Taking taylor expansion of x in y
0.179 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.179 * [taylor]: Taking taylor expansion of 4.0 in y
0.179 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.179 * [taylor]: Taking taylor expansion of y in y
0.179 * [taylor]: Taking taylor expansion of (+ (pow x 2) (* 4.0 (pow y 2))) in y
0.179 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.179 * [taylor]: Taking taylor expansion of x in y
0.179 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.179 * [taylor]: Taking taylor expansion of 4.0 in y
0.179 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.179 * [taylor]: Taking taylor expansion of y in y
0.180 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in x
0.180 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.180 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.180 * [taylor]: Taking taylor expansion of x in x
0.180 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.180 * [taylor]: Taking taylor expansion of 4.0 in x
0.180 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.180 * [taylor]: Taking taylor expansion of y in x
0.180 * [taylor]: Taking taylor expansion of (+ (pow x 2) (* 4.0 (pow y 2))) in x
0.180 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.180 * [taylor]: Taking taylor expansion of x in x
0.180 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.180 * [taylor]: Taking taylor expansion of 4.0 in x
0.180 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.180 * [taylor]: Taking taylor expansion of y in x
0.180 * [taylor]: Taking taylor expansion of (/ (- (pow x 2) (* 4.0 (pow y 2))) (+ (pow x 2) (* 4.0 (pow y 2)))) in x
0.180 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.181 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.181 * [taylor]: Taking taylor expansion of x in x
0.181 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.181 * [taylor]: Taking taylor expansion of 4.0 in x
0.181 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.181 * [taylor]: Taking taylor expansion of y in x
0.181 * [taylor]: Taking taylor expansion of (+ (pow x 2) (* 4.0 (pow y 2))) in x
0.181 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.181 * [taylor]: Taking taylor expansion of x in x
0.181 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.181 * [taylor]: Taking taylor expansion of 4.0 in x
0.181 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.181 * [taylor]: Taking taylor expansion of y in x
0.181 * [taylor]: Taking taylor expansion of -1.0 in y
0.184 * [taylor]: Taking taylor expansion of 0 in y
0.188 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 (pow y 2))) in y
0.188 * [taylor]: Taking taylor expansion of 0.5 in y
0.188 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.188 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.188 * [taylor]: Taking taylor expansion of y in y
0.196 * [taylor]: Taking taylor expansion of 0 in y
0.197 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in (x y) around 0
0.197 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in y
0.197 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.197 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.197 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.197 * [taylor]: Taking taylor expansion of x in y
0.197 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.197 * [taylor]: Taking taylor expansion of 4.0 in y
0.197 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.197 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.197 * [taylor]: Taking taylor expansion of y in y
0.198 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.198 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.198 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.198 * [taylor]: Taking taylor expansion of x in y
0.198 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.198 * [taylor]: Taking taylor expansion of 4.0 in y
0.198 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.198 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.198 * [taylor]: Taking taylor expansion of y in y
0.201 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.201 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.201 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.201 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.201 * [taylor]: Taking taylor expansion of x in x
0.202 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.202 * [taylor]: Taking taylor expansion of 4.0 in x
0.202 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.202 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.202 * [taylor]: Taking taylor expansion of y in x
0.202 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) 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 (* 4.0 (/ 1 (pow y 2))) in x
0.203 * [taylor]: Taking taylor expansion of 4.0 in x
0.203 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.203 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.203 * [taylor]: Taking taylor expansion of y in x
0.204 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.204 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.204 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.204 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.204 * [taylor]: Taking taylor expansion of x in x
0.205 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.205 * [taylor]: Taking taylor expansion of 4.0 in x
0.205 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.205 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.205 * [taylor]: Taking taylor expansion of y in x
0.205 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.205 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.205 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.205 * [taylor]: Taking taylor expansion of x in x
0.205 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.205 * [taylor]: Taking taylor expansion of 4.0 in x
0.205 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.205 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.205 * [taylor]: Taking taylor expansion of y in x
0.206 * [taylor]: Taking taylor expansion of 1 in y
0.209 * [taylor]: Taking taylor expansion of 0 in y
0.213 * [taylor]: Taking taylor expansion of (- (* 8.0 (/ 1 (pow y 2)))) in y
0.213 * [taylor]: Taking taylor expansion of (* 8.0 (/ 1 (pow y 2))) in y
0.213 * [taylor]: Taking taylor expansion of 8.0 in y
0.213 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.213 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.213 * [taylor]: Taking taylor expansion of y in y
0.222 * [taylor]: Taking taylor expansion of 0 in y
0.222 * [approximate]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in (x y) around 0
0.222 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in y
0.222 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.222 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.222 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.222 * [taylor]: Taking taylor expansion of x in y
0.223 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.223 * [taylor]: Taking taylor expansion of 4.0 in y
0.223 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.223 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.223 * [taylor]: Taking taylor expansion of y in y
0.224 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.224 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.224 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.224 * [taylor]: Taking taylor expansion of x in y
0.224 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.224 * [taylor]: Taking taylor expansion of 4.0 in y
0.224 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.224 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.224 * [taylor]: Taking taylor expansion of y in y
0.227 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.227 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.227 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.227 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.227 * [taylor]: Taking taylor expansion of x in x
0.228 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.228 * [taylor]: Taking taylor expansion of 4.0 in x
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.228 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.228 * [taylor]: Taking taylor expansion of y in x
0.228 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.228 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.228 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.228 * [taylor]: Taking taylor expansion of x in x
0.229 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.229 * [taylor]: Taking taylor expansion of 4.0 in x
0.229 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.229 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.229 * [taylor]: Taking taylor expansion of y in x
0.230 * [taylor]: Taking taylor expansion of (/ (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2))))) in x
0.230 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.230 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.230 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.230 * [taylor]: Taking taylor expansion of x in x
0.230 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.230 * [taylor]: Taking taylor expansion of 4.0 in x
0.230 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.230 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.230 * [taylor]: Taking taylor expansion of y in x
0.231 * [taylor]: Taking taylor expansion of (+ (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.231 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.231 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.231 * [taylor]: Taking taylor expansion of x in x
0.231 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.231 * [taylor]: Taking taylor expansion of 4.0 in x
0.231 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.231 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.231 * [taylor]: Taking taylor expansion of y in x
0.232 * [taylor]: Taking taylor expansion of 1 in y
0.235 * [taylor]: Taking taylor expansion of 0 in y
0.244 * [taylor]: Taking taylor expansion of (- (* 8.0 (/ 1 (pow y 2)))) in y
0.244 * [taylor]: Taking taylor expansion of (* 8.0 (/ 1 (pow y 2))) in y
0.244 * [taylor]: Taking taylor expansion of 8.0 in y
0.244 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.244 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.244 * [taylor]: Taking taylor expansion of y in y
0.253 * [taylor]: Taking taylor expansion of 0 in y
0.253 * * * * [progress]: [ 2 / 2 ] generating series at (2 1)
0.253 * [approximate]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in (x y) around 0
0.253 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in y
0.253 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.253 * [taylor]: Taking taylor expansion of x in y
0.253 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.253 * [taylor]: Taking taylor expansion of 4.0 in y
0.253 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.253 * [taylor]: Taking taylor expansion of y in y
0.253 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.253 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.253 * [taylor]: Taking taylor expansion of x in x
0.254 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.254 * [taylor]: Taking taylor expansion of 4.0 in x
0.254 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.254 * [taylor]: Taking taylor expansion of y in x
0.254 * [taylor]: Taking taylor expansion of (- (pow x 2) (* 4.0 (pow y 2))) in x
0.254 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.254 * [taylor]: Taking taylor expansion of x in x
0.254 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in x
0.254 * [taylor]: Taking taylor expansion of 4.0 in x
0.254 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.254 * [taylor]: Taking taylor expansion of y in x
0.254 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow y 2))) in y
0.254 * [taylor]: Taking taylor expansion of (* 4.0 (pow y 2)) in y
0.254 * [taylor]: Taking taylor expansion of 4.0 in y
0.254 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.254 * [taylor]: Taking taylor expansion of y in y
0.255 * [taylor]: Taking taylor expansion of 0 in y
0.257 * [taylor]: Taking taylor expansion of 1 in y
0.260 * [taylor]: Taking taylor expansion of 0 in y
0.264 * [taylor]: Taking taylor expansion of 0 in y
0.265 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in (x y) around 0
0.265 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.265 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.265 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.265 * [taylor]: Taking taylor expansion of x in y
0.266 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.266 * [taylor]: Taking taylor expansion of 4.0 in y
0.266 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.266 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.266 * [taylor]: Taking taylor expansion of y in y
0.266 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.266 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.266 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.266 * [taylor]: Taking taylor expansion of x in x
0.267 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.267 * [taylor]: Taking taylor expansion of 4.0 in x
0.267 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.267 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.267 * [taylor]: Taking taylor expansion of y in x
0.267 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.267 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.267 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.267 * [taylor]: Taking taylor expansion of x in x
0.268 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.268 * [taylor]: Taking taylor expansion of 4.0 in x
0.268 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.268 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.268 * [taylor]: Taking taylor expansion of y in x
0.268 * [taylor]: Taking taylor expansion of 1 in y
0.269 * [taylor]: Taking taylor expansion of 0 in y
0.271 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow y 2)))) in y
0.271 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.271 * [taylor]: Taking taylor expansion of 4.0 in y
0.271 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.271 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.271 * [taylor]: Taking taylor expansion of y in y
0.276 * [taylor]: Taking taylor expansion of 0 in y
0.281 * [taylor]: Taking taylor expansion of 0 in y
0.283 * [approximate]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in (x y) around 0
0.283 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in y
0.284 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in y
0.284 * [taylor]: Taking taylor expansion of (pow x 2) in y
0.284 * [taylor]: Taking taylor expansion of x in y
0.284 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.284 * [taylor]: Taking taylor expansion of 4.0 in y
0.284 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.284 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.284 * [taylor]: Taking taylor expansion of y in y
0.285 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.285 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.285 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.285 * [taylor]: Taking taylor expansion of x in x
0.285 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.285 * [taylor]: Taking taylor expansion of 4.0 in x
0.285 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.285 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.285 * [taylor]: Taking taylor expansion of y in x
0.285 * [taylor]: Taking taylor expansion of (- (/ 1 (pow x 2)) (* 4.0 (/ 1 (pow y 2)))) in x
0.285 * [taylor]: Taking taylor expansion of (/ 1 (pow x 2)) in x
0.286 * [taylor]: Taking taylor expansion of (pow x 2) in x
0.286 * [taylor]: Taking taylor expansion of x in x
0.286 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in x
0.286 * [taylor]: Taking taylor expansion of 4.0 in x
0.286 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in x
0.286 * [taylor]: Taking taylor expansion of (pow y 2) in x
0.286 * [taylor]: Taking taylor expansion of y in x
0.287 * [taylor]: Taking taylor expansion of 1 in y
0.288 * [taylor]: Taking taylor expansion of 0 in y
0.289 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow y 2)))) in y
0.289 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow y 2))) in y
0.289 * [taylor]: Taking taylor expansion of 4.0 in y
0.289 * [taylor]: Taking taylor expansion of (/ 1 (pow y 2)) in y
0.289 * [taylor]: Taking taylor expansion of (pow y 2) in y
0.289 * [taylor]: Taking taylor expansion of y in y
0.293 * [taylor]: Taking taylor expansion of 0 in y
0.298 * [taylor]: Taking taylor expansion of 0 in y
0.301 * * * [progress]: simplifying candidates
0.302 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (log1p (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (- (log (- (* x x) (* (* y 4.0) y))) (log (+ (* x x) (* (* y 4.0) y))))
  (log (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (exp (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (/ (* (* (- (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y))) (- (* x x) (* (* y 4.0) y))) (* (* (+ (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y))))
  (* (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))) (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))))
  (cbrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (* (* (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))) (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (sqrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (sqrt (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y))))
  (- (- (* x x) (* (* y 4.0) y)))
  (- (+ (* x x) (* (* y 4.0) y)))
  (/ (* x x) (+ (* x x) (* (* y 4.0) y)))
  (/ (* (* y 4.0) y) (+ (* x x) (* (* y 4.0) y)))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y)))) 1)
  (/ (cbrt (- (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y)))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) 1)
  (/ (sqrt (- (* x x) (* (* y 4.0) y))) (+ (* x x) (* (* y 4.0) y)))
  (/ 1 (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (- (* x x) (* (* y 4.0) y)) (cbrt (+ (* x x) (* (* y 4.0) y))))
  (/ 1 (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (- (* x x) (* (* y 4.0) y)) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ 1 1)
  (/ (- (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
  (/ 1 (+ (* x x) (* (* y 4.0) y)))
  (/ (+ (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y)))
  (/ (- (* x x) (* (* y 4.0) y)) (* (cbrt (+ (* x x) (* (* y 4.0) y))) (cbrt (+ (* x x) (* (* y 4.0) y)))))
  (/ (- (* x x) (* (* y 4.0) y)) (sqrt (+ (* x x) (* (* y 4.0) y))))
  (/ (- (* x x) (* (* y 4.0) y)) 1)
  (/ (+ (* x x) (* (* y 4.0) y)) (cbrt (- (* x x) (* (* y 4.0) y))))
  (/ (+ (* x x) (* (* y 4.0) y)) (sqrt (- (* x x) (* (* y 4.0) y))))
  (/ (+ (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y)))
  (/ (- (* x x) (* (* y 4.0) y)) (+ (pow (* x x) 3) (pow (* (* y 4.0) y) 3)))
  (/ (- (* x x) (* (* y 4.0) y)) (- (* (* x x) (* x x)) (* (* (* y 4.0) y) (* (* y 4.0) y))))
  (* (+ (* x x) (* (* y 4.0) y)) (+ (* (* x x) (* x x)) (+ (* (* (* y 4.0) y) (* (* y 4.0) y)) (* (* x x) (* (* y 4.0) y)))))
  (* (+ (* x x) (* (* y 4.0) y)) (+ (* x x) (* (* y 4.0) y)))
  (fma x x (- (* y (* y 4.0))))
  (fma (- y) (* y 4.0) (* y (* y 4.0)))
  (expm1 (- (* x x) (* (* y 4.0) y)))
  (log1p (- (* x x) (* (* y 4.0) y)))
  (- (* (* y 4.0) y))
  (/ (exp (* x x)) (exp (* (* y 4.0) y)))
  (log (- (* x x) (* (* y 4.0) y)))
  (exp (- (* x x) (* (* y 4.0) y)))
  (* (cbrt (- (* x x) (* (* y 4.0) y))) (cbrt (- (* x x) (* (* y 4.0) y))))
  (cbrt (- (* x x) (* (* y 4.0) y)))
  (* (* (- (* x x) (* (* y 4.0) y)) (- (* x x) (* (* y 4.0) y))) (- (* x x) (* (* y 4.0) y)))
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (sqrt (- (* x x) (* (* y 4.0) y)))
  (- (pow (* x x) 3) (pow (* (* y 4.0) y) 3))
  (+ (* (* x x) (* x x)) (+ (* (* (* y 4.0) y) (* (* y 4.0) y)) (* (* x x) (* (* y 4.0) y))))
  (- (* (* y 4.0) y))
  (- (* (* x x) (* x x)) (* (* (* y 4.0) y) (* (* y 4.0) y)))
  (+ (* x x) (* (* y 4.0) y))
  (- (* (* y 4.0) y))
  -1.0
  1
  1
  (- (pow x 2) (* 4.0 (pow y 2)))
  (- (pow x 2) (* 4.0 (pow y 2)))
  (- (pow x 2) (* 4.0 (pow y 2)))
0.305 * * [simplify]: iteration  0 :  91  enodes  (cost  1282 )
0.321 * * [simplify]: iteration  1 :  236  enodes  (cost  1205 )
0.390 * * [simplify]: iteration  2 :  1025  enodes  (cost  1090 )