0.400 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.040 * * * [progress]: [2/2] Setting up program.
0.045 * [progress]: [Phase 2 of 3] Improving.
0.045 * [simplify]: Simplifying:
  (- (sqrt (+ x 1.0)) (sqrt x))
0.045 * * [simplify]: Extracting # 0 : cost  0
0.045 * * [simplify]: Extracting # 1 : cost  0
0.045 * * [simplify]: Extracting # 2 : cost  0
0.045 * * [simplify]: Extracting # 3 : cost  0
0.045 * * [simplify]: Extracting # 4 : cost  0
0.045 * * [simplify]: Extracting # 5 : cost  0
0.045 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.047 * * [simplify]: Extracting # 0 : cost  0
0.047 * * [simplify]: Extracting # 1 : cost  0
0.047 * * [simplify]: Extracting # 2 : cost  0
0.047 * * [simplify]: iteration  1 :  9  enodes  (cost  7 )
0.049 * * [simplify]: Extracting # 0 : cost  0
0.049 * * [simplify]: iteration  2 :  10  enodes  (cost  7 )
0.051 * * [simplify]: Extracting # 0 : cost  0
0.051 * * [simplify]: iteration done:  10  enodes  (cost  7 )
0.051 * [simplify]: Simplified to:
  (- (sqrt (+ x 1.0)) (sqrt x))
0.052 * * [progress]: iteration 1 / 4
0.052 * * * [progress]: picking best candidate
0.055 * * * * [pick]: Picked  #<alt (λ (x) (- (sqrt (+ x 1.0)) (sqrt x)))>
0.055 * * * [progress]: localizing error
0.066 * * * [progress]: generating rewritten candidates
0.066 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.167 * * * [progress]: generating series expansions
0.167 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.167 * [backup-simplify]: Simplify (- (sqrt (+ x 1.0)) (sqrt x)) into (- (sqrt (+ x 1.0)) (sqrt x))
0.167 * [approximate]: Taking taylor expansion of (- (sqrt (+ x 1.0)) (sqrt x)) in (x) around 0
0.168 * [taylor]: Taking taylor expansion of (- (sqrt (+ x 1.0)) (sqrt x)) in x
0.168 * [taylor]: Taking taylor expansion of (sqrt (+ x 1.0)) in x
0.168 * [taylor]: Taking taylor expansion of (+ x 1.0) in x
0.168 * [taylor]: Taking taylor expansion of x in x
0.168 * [backup-simplify]: Simplify 0 into 0
0.168 * [backup-simplify]: Simplify 1 into 1
0.168 * [taylor]: Taking taylor expansion of 1.0 in x
0.168 * [backup-simplify]: Simplify 1.0 into 1.0
0.168 * [backup-simplify]: Simplify (+ 0 1.0) into 1.0
0.169 * [backup-simplify]: Simplify (sqrt 1.0) into (sqrt 1.0)
0.169 * [backup-simplify]: Simplify (+ 1 0) into 1
0.170 * [backup-simplify]: Simplify (/ 1 (* 2 (sqrt 1.0))) into (/ 1/2 (sqrt 1.0))
0.170 * [taylor]: Taking taylor expansion of (sqrt x) in x
0.170 * [taylor]: Taking taylor expansion of x in x
0.170 * [backup-simplify]: Simplify 0 into 0
0.170 * [backup-simplify]: Simplify 1 into 1
0.170 * [backup-simplify]: Simplify (sqrt 0) into 0
0.171 * [backup-simplify]: Simplify (/ 1 (* 2 (sqrt 0))) into +nan.0
0.171 * [taylor]: Taking taylor expansion of (- (sqrt (+ x 1.0)) (sqrt x)) in x
0.171 * [taylor]: Taking taylor expansion of (sqrt (+ x 1.0)) in x
0.171 * [taylor]: Taking taylor expansion of (+ x 1.0) in x
0.171 * [taylor]: Taking taylor expansion of x in x
0.171 * [backup-simplify]: Simplify 0 into 0
0.171 * [backup-simplify]: Simplify 1 into 1
0.171 * [taylor]: Taking taylor expansion of 1.0 in x
0.171 * [backup-simplify]: Simplify 1.0 into 1.0
0.172 * [backup-simplify]: Simplify (+ 0 1.0) into 1.0
0.172 * [backup-simplify]: Simplify (sqrt 1.0) into (sqrt 1.0)
0.172 * [backup-simplify]: Simplify (+ 1 0) into 1
0.173 * [backup-simplify]: Simplify (/ 1 (* 2 (sqrt 1.0))) into (/ 1/2 (sqrt 1.0))
0.173 * [taylor]: Taking taylor expansion of (sqrt x) in x
0.173 * [taylor]: Taking taylor expansion of x in x
0.173 * [backup-simplify]: Simplify 0 into 0
0.173 * [backup-simplify]: Simplify 1 into 1
0.173 * [backup-simplify]: Simplify (sqrt 0) into 0
0.174 * [backup-simplify]: Simplify (/ 1 (* 2 (sqrt 0))) into +nan.0
0.175 * [backup-simplify]: Simplify (- 0) into 0
0.175 * [backup-simplify]: Simplify (+ (sqrt 1.0) 0) into (sqrt 1.0)
0.175 * [backup-simplify]: Simplify (sqrt 1.0) into (sqrt 1.0)
0.176 * [backup-simplify]: Simplify (- +nan.0) into (- +nan.0)
0.177 * [backup-simplify]: Simplify (+ (/ 1/2 (sqrt 1.0)) (- +nan.0)) into (- (* 1/2 (/ 1 (sqrt 1.0))) +nan.0)
0.178 * [backup-simplify]: Simplify (- (* 1/2 (/ 1 (sqrt 1.0))) +nan.0) into (- (* 1/2 (/ 1 (sqrt 1.0))) +nan.0)
0.179 * [backup-simplify]: Simplify (+ 0 0) into 0
0.182 * [backup-simplify]: Simplify (/ (- 0 (pow (/ 1/2 (sqrt 1.0)) 2) (+)) (* 2 (sqrt 1.0))) into (/ -1/8 (pow (sqrt 1.0) 3))
0.184 * [backup-simplify]: Simplify (/ (- 0 (pow +nan.0 2) (+)) (* 2 0)) into +nan.0
0.184 * [backup-simplify]: Simplify (- +nan.0) into (- +nan.0)
0.186 * [backup-simplify]: Simplify (+ (/ -1/8 (pow (sqrt 1.0) 3)) (- +nan.0)) into (- (+ +nan.0 (* 1/8 (/ 1 (pow (sqrt 1.0) 3)))))
0.189 * [backup-simplify]: Simplify (- (+ +nan.0 (* 1/8 (/ 1 (pow (sqrt 1.0) 3))))) into (- (+ +nan.0 (* 1/8 (/ 1 (pow (sqrt 1.0) 3)))))