0.247 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.065 * * * [progress]: [2/2] Setting up program.
0.068 * [progress]: [Phase 2 of 3] Improving.
0.069 * [simplify]: Simplifying:
  (- (/ 1.0 (sqrt x)) (/ 1.0 (sqrt (+ x 1.0))))
0.069 * * [simplify]: Extracting # 0 : cost  0
0.069 * * [simplify]: Extracting # 1 : cost  0
0.069 * * [simplify]: Extracting # 2 : cost  0
0.069 * * [simplify]: Extracting # 3 : cost  0
0.069 * * [simplify]: Extracting # 4 : cost  0
0.069 * * [simplify]: Extracting # 5 : cost  0
0.069 * * [simplify]: iteration  0 :  8  enodes  (cost  11 )
0.071 * * [simplify]: Extracting # 0 : cost  0
0.071 * * [simplify]: Extracting # 1 : cost  0
0.071 * * [simplify]: Extracting # 2 : cost  0
0.071 * * [simplify]: iteration  1 :  11  enodes  (cost  11 )
0.075 * * [simplify]: Extracting # 0 : cost  0
0.075 * * [simplify]: Extracting # 1 : cost  0
0.075 * * [simplify]: Extracting # 2 : cost  0
0.075 * * [simplify]: iteration  2 :  14  enodes  (cost  11 )
0.079 * * [simplify]: Extracting # 0 : cost  0
0.079 * * [simplify]: iteration done:  14  enodes  (cost  11 )
0.079 * [simplify]: Simplified to:
  (- (/ 1.0 (sqrt x)) (/ 1.0 (sqrt (+ x 1.0))))
0.080 * * [progress]: iteration 1 / 4
0.080 * * * [progress]: picking best candidate
0.083 * * * * [pick]: Picked  #<alt (λ (x) (- (/ 1.0 (sqrt x)) (/ 1.0 (sqrt (+ x 1.0)))))>
0.083 * * * [progress]: localizing error
0.100 * * * [progress]: generating rewritten candidates
0.100 * * * * [progress]: [ 1 / 4 ] rewriting at (2)
0.238 * * * * [progress]: [ 2 / 4 ] rewriting at (2 1)
0.247 * * * * [progress]: [ 3 / 4 ] rewriting at (2 2)
0.263 * * * * [progress]: [ 4 / 4 ] rewriting at (2 2 2)
0.277 * * * [progress]: generating series expansions
0.277 * * * * [progress]: [ 1 / 4 ] generating series at (2)
0.277 * [backup-simplify]: Simplify (- (/ 1.0 (sqrt x)) (/ 1.0 (sqrt (+ x 1.0)))) into (- (* 1.0 (sqrt (/ 1 x))) (* 1.0 (sqrt (/ 1 (+ x 1.0)))))
0.277 * [approximate]: Taking taylor expansion of (- (* 1.0 (sqrt (/ 1 x))) (* 1.0 (sqrt (/ 1 (+ x 1.0))))) in (x) around 0
0.277 * [taylor]: Taking taylor expansion of (- (* 1.0 (sqrt (/ 1 x))) (* 1.0 (sqrt (/ 1 (+ x 1.0))))) in x
0.277 * [taylor]: Taking taylor expansion of (* 1.0 (sqrt (/ 1 x))) in x
0.277 * [taylor]: Taking taylor expansion of 1.0 in x
0.277 * [backup-simplify]: Simplify 1.0 into 1.0
0.277 * [taylor]: Taking taylor expansion of (sqrt (/ 1 x)) in x
0.277 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.277 * [taylor]: Taking taylor expansion of x in x
0.277 * [backup-simplify]: Simplify 0 into 0
0.277 * [backup-simplify]: Simplify 1 into 1
0.278 * [backup-simplify]: Simplify (/ 1 1) into 1
0.279 * [backup-simplify]: Simplify (sqrt 0) into 0
0.280 * [backup-simplify]: Simplify (/ 1 (* 2 (sqrt 0))) into +nan.0
0.280 * [taylor]: Taking taylor expansion of (* 1.0 (sqrt (/ 1 (+ x 1.0)))) in x
0.280 * [taylor]: Taking taylor expansion of 1.0 in x
0.280 * [backup-simplify]: Simplify 1.0 into 1.0
0.281 * [taylor]: Taking taylor expansion of (sqrt (/ 1 (+ x 1.0))) in x
0.281 * [taylor]: Taking taylor expansion of (/ 1 (+ x 1.0)) in x
0.281 * [taylor]: Taking taylor expansion of (+ x 1.0) in x
0.281 * [taylor]: Taking taylor expansion of x in x
0.281 * [backup-simplify]: Simplify 0 into 0
0.281 * [backup-simplify]: Simplify 1 into 1
0.281 * [taylor]: Taking taylor expansion of 1.0 in x
0.281 * [backup-simplify]: Simplify 1.0 into 1.0
0.281 * [backup-simplify]: Simplify (+ 0 1.0) into 1.0
0.282 * [backup-simplify]: Simplify (/ 1 1.0) into 1.0
0.282 * [backup-simplify]: Simplify (sqrt 1.0) into (sqrt 1.0)
0.283 * [backup-simplify]: Simplify (+ 1 0) into 1
0.285 * [backup-simplify]: Simplify (- (+ (* 1.0 (/ 1 1.0)))) into (- 1.0)
0.288 * [backup-simplify]: Simplify (/ (- 1.0) (* 2 (sqrt 1.0))) into (/ -0.5 (sqrt 1.0))
0.288 * [taylor]: Taking taylor expansion of (- (* 1.0 (sqrt (/ 1 x))) (* 1.0 (sqrt (/ 1 (+ x 1.0))))) in x
0.288 * [taylor]: Taking taylor expansion of (* 1.0 (sqrt (/ 1 x))) in x
0.288 * [taylor]: Taking taylor expansion of 1.0 in x
0.288 * [backup-simplify]: Simplify 1.0 into 1.0
0.288 * [taylor]: Taking taylor expansion of (sqrt (/ 1 x)) in x
0.288 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.288 * [taylor]: Taking taylor expansion of x in x
0.288 * [backup-simplify]: Simplify 0 into 0
0.288 * [backup-simplify]: Simplify 1 into 1
0.289 * [backup-simplify]: Simplify (/ 1 1) into 1
0.290 * [backup-simplify]: Simplify (sqrt 0) into 0
0.291 * [backup-simplify]: Simplify (/ 1 (* 2 (sqrt 0))) into +nan.0
0.291 * [taylor]: Taking taylor expansion of (* 1.0 (sqrt (/ 1 (+ x 1.0)))) in x
0.291 * [taylor]: Taking taylor expansion of 1.0 in x
0.291 * [backup-simplify]: Simplify 1.0 into 1.0
0.291 * [taylor]: Taking taylor expansion of (sqrt (/ 1 (+ x 1.0))) in x
0.291 * [taylor]: Taking taylor expansion of (/ 1 (+ x 1.0)) in x
0.291 * [taylor]: Taking taylor expansion of (+ x 1.0) 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 1.0 in x
0.291 * [backup-simplify]: Simplify 1.0 into 1.0
0.292 * [backup-simplify]: Simplify (+ 0 1.0) into 1.0
0.292 * [backup-simplify]: Simplify (/ 1 1.0) into 1.0
0.293 * [backup-simplify]: Simplify (sqrt 1.0) into (sqrt 1.0)
0.293 * [backup-simplify]: Simplify (+ 1 0) into 1
0.295 * [backup-simplify]: Simplify (- (+ (* 1.0 (/ 1 1.0)))) into (- 1.0)
0.297 * [backup-simplify]: Simplify (/ (- 1.0) (* 2 (sqrt 1.0))) into (/ -0.5 (sqrt 1.0))
0.298 * [backup-simplify]: Simplify (* 1.0 0) into 0
0.298 * [backup-simplify]: Simplify (+ 0 0) into 0
0.298 * [backup-simplify]: Simplify 0 into 0
0.299 * [backup-simplify]: Simplify (+ (* 1.0 +nan.0) (* 0 0)) into (- +nan.0)
0.300 * [backup-simplify]: Simplify (* 1.0 (sqrt 1.0)) into (* 1.0 (sqrt 1.0))
0.301 * [backup-simplify]: Simplify (- (* 1.0 (sqrt 1.0))) into (- (* 1.0 (sqrt 1.0)))
0.304 * [backup-simplify]: Simplify (+ (- +nan.0) (- (* 1.0 (sqrt 1.0)))) into (- (+ (* 1.0 (sqrt 1.0)) (- +nan.0)))
0.306 * [backup-simplify]: Simplify (- (+ (* 1.0 (sqrt 1.0)) (- +nan.0))) into (- (+ (* 1.0 (sqrt 1.0)) (- +nan.0)))
0.307 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
0.310 * [backup-simplify]: Simplify (/ (- 0 (pow +nan.0 2) (+)) (* 2 0)) into +nan.0
0.312 * [backup-simplify]: Simplify (+ (* 1.0 +nan.0) (+ (* 0 +nan.0) (* 0 0))) into (- +nan.0)
0.315 * [backup-simplify]: Simplify (+ (* 1.0 (/ -0.5 (sqrt 1.0))) (* 0 (sqrt 1.0))) into (- (* 0.5 (/ 1 (sqrt 1.0))))
0.318 * [backup-simplify]: Simplify (- (- (* 0.5 (/ 1 (sqrt 1.0))))) into (* 0.5 (/ 1 (sqrt 1.0)))
0.321 * [backup-simplify]: Simplify (+ (- +nan.0) (* 0.5 (/ 1 (sqrt 1.0)))) into (- (* 0.5 (/ 1 (sqrt 1.0))) +nan.0)
0.323 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 (sqrt 1.0))) +nan.0) into (- (* 0.5 (/ 1 (sqrt 1.0))) +nan.0)
0.324 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
0.328 * [backup-simplify]: Simplify (/ (- 0 (+ (* 2 (* +nan.0 +nan.0)))) (* 2 0)) into +nan.0
0.330 * [backup-simplify]: Simplify (+ (* 1.0 +nan.0) (+ (* 0 +nan.0) (+ (* 0 +nan.0) (* 0 0)))) into (- +nan.0)
0.331 * [backup-simplify]: Simplify (+ 0 0) into 0
0.334 * [backup-simplify]: Simplify (- (+ (* 1.0 (/ 0 1.0)) (* (- 1.0) (/ 1 1.0)))) into 1.0
0.339 * [backup-simplify]: Simplify (/ (- 1.0 (pow (/ -0.5 (sqrt 1.0)) 2) (+)) (* 2 (sqrt 1.0))) into (* 1/2 (/ (- 1.0 (* 0.25 (/ 1 (pow (sqrt 1.0) 2)))) (sqrt 1.0)))
0.352 * [backup-simplify]: Simplify (+ (* 1.0 (* 1/2 (/ (- 1.0 (* 0.25 (/ 1 (pow (sqrt 1.0) 2)))) (sqrt 1.0)))) (+ (* 0 (/ -0.5 (sqrt 1.0))) (* 0 (sqrt 1.0)))) into (- (* 0.5 (/ 1 (sqrt 1.0))) (* 0.125 (/ 1 (pow (sqrt 1.0) 3))))
0.359 * [backup-simplify]: Simplify (- (- (* 0.5 (/ 1 (sqrt 1.0))) (* 0.125 (/ 1 (pow (sqrt 1.0) 3))))) into (- (* 0.125 (/ 1 (pow (sqrt 1.0) 3))) (* 0.5 (/ 1 (sqrt 1.0))))
0.368 * [backup-simplify]: Simplify (+ (- +nan.0) (- (* 0.125 (/ 1 (pow (sqrt 1.0) 3))) (* 0.5 (/ 1 (sqrt 1.0))))) into (- (* 0.125 (/ 1 (pow (sqrt 1.0) 3))) (+ (* 0.5 (/ 1 (sqrt 1.0))) (- +nan.0)))
0.375 * [backup-simplify]: Simplify (- (* 0.125 (/ 1 (pow (sqrt 1.0) 3))) (+ (* 0.5 (/ 1 (sqrt 1.0))) (- +nan.0))) into (- (* 0.125 (/ 1 (pow (sqrt 1.0) 3))) (+ +nan.0 (* 0.5 (/ 1 (sqrt 1.0)))))