2.746 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (/ (* (* i i) (* i i)) (* (* 2.0 i) (* 2.0 i))) (- (* (* 2.0 i) (* 2.0 i)) 1.0))
0.019 * * [simplify]: iteration  0 :  10  enodes  (cost  25 )
0.021 * * [simplify]: iteration  1 :  32  enodes  (cost  25 )
0.027 * * [simplify]: iteration  2 :  167  enodes  (cost  23 )
0.079 * * [simplify]: iteration  3 :  893  enodes  (cost  19 )
0.411 * * [simplify]: iteration  done :  5000  enodes  (cost  17 )
0.411 * [simplify]: Simplified to:
   (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))
0.414 * * [progress]: iteration 1 / 4
0.414 * * * [progress]: picking best candidate
0.415 * * * * [pick]: Picked  #<alt (λ (i) (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))>
0.416 * * * [progress]: localizing error
0.423 * * * [progress]: generating rewritten candidates
0.423 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.447 * * * [progress]: generating series expansions
0.447 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.448 * [approximate]: Taking taylor expansion of (* 0.25 (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0))) in (i) around 0
0.448 * [taylor]: Taking taylor expansion of (* 0.25 (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0))) in i
0.448 * [taylor]: Taking taylor expansion of 0.25 in i
0.448 * [taylor]: Taking taylor expansion of (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0)) in i
0.448 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.448 * [taylor]: Taking taylor expansion of i in i
0.448 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow i 2)) 1.0) in i
0.448 * [taylor]: Taking taylor expansion of (* 4.0 (pow i 2)) in i
0.448 * [taylor]: Taking taylor expansion of 4.0 in i
0.448 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.448 * [taylor]: Taking taylor expansion of i in i
0.448 * [taylor]: Taking taylor expansion of 1.0 in i
0.449 * [taylor]: Taking taylor expansion of (* 0.25 (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0))) in i
0.449 * [taylor]: Taking taylor expansion of 0.25 in i
0.450 * [taylor]: Taking taylor expansion of (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0)) in i
0.450 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.450 * [taylor]: Taking taylor expansion of i in i
0.450 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow i 2)) 1.0) in i
0.450 * [taylor]: Taking taylor expansion of (* 4.0 (pow i 2)) in i
0.450 * [taylor]: Taking taylor expansion of 4.0 in i
0.450 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.450 * [taylor]: Taking taylor expansion of i in i
0.450 * [taylor]: Taking taylor expansion of 1.0 in i
0.473 * [approximate]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in (i) around 0
0.473 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
0.473 * [taylor]: Taking taylor expansion of 0.25 in i
0.473 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
0.473 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.473 * [taylor]: Taking taylor expansion of i in i
0.473 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
0.473 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
0.473 * [taylor]: Taking taylor expansion of 4.0 in i
0.473 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
0.473 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.473 * [taylor]: Taking taylor expansion of i in i
0.474 * [taylor]: Taking taylor expansion of 1.0 in i
0.475 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
0.475 * [taylor]: Taking taylor expansion of 0.25 in i
0.475 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
0.475 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.475 * [taylor]: Taking taylor expansion of i in i
0.475 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
0.475 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
0.475 * [taylor]: Taking taylor expansion of 4.0 in i
0.475 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
0.475 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.475 * [taylor]: Taking taylor expansion of i in i
0.476 * [taylor]: Taking taylor expansion of 1.0 in i
0.502 * [approximate]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in (i) around 0
0.502 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
0.502 * [taylor]: Taking taylor expansion of 0.25 in i
0.503 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
0.503 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.503 * [taylor]: Taking taylor expansion of i in i
0.503 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
0.503 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
0.503 * [taylor]: Taking taylor expansion of 4.0 in i
0.503 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
0.503 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.503 * [taylor]: Taking taylor expansion of i in i
0.503 * [taylor]: Taking taylor expansion of 1.0 in i
0.504 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
0.505 * [taylor]: Taking taylor expansion of 0.25 in i
0.505 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
0.505 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.505 * [taylor]: Taking taylor expansion of i in i
0.505 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
0.505 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
0.505 * [taylor]: Taking taylor expansion of 4.0 in i
0.505 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
0.505 * [taylor]: Taking taylor expansion of (pow i 2) in i
0.505 * [taylor]: Taking taylor expansion of i in i
0.505 * [taylor]: Taking taylor expansion of 1.0 in i
0.528 * * * [progress]: simplifying candidates
0.528 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log1p (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (- (+ (log i) (log i)) (+ (log (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (+ (log 2.0) (log 2.0))))
  (- (+ (log i) (log i)) (+ (log (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (log (* 2.0 2.0))))
  (- (+ (log i) (log i)) (log (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (- (log (* i i)) (+ (log (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (+ (log 2.0) (log 2.0))))
  (- (log (* i i)) (+ (log (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (log (* 2.0 2.0))))
  (- (log (* i i)) (log (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (exp (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (/ (* (* (* i i) i) (* (* i i) i)) (* (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (* (* (* 2.0 2.0) 2.0) (* (* 2.0 2.0) 2.0))))
  (/ (* (* (* i i) i) (* (* i i) i)) (* (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (* (* (* 2.0 2.0) (* 2.0 2.0)) (* 2.0 2.0))))
  (/ (* (* (* i i) i) (* (* i i) i)) (* (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (/ (* (* (* i i) (* i i)) (* i i)) (* (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (* (* (* 2.0 2.0) 2.0) (* (* 2.0 2.0) 2.0))))
  (/ (* (* (* i i) (* i i)) (* i i)) (* (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (* (* (* 2.0 2.0) (* 2.0 2.0)) (* 2.0 2.0))))
  (/ (* (* (* i i) (* i i)) (* i i)) (* (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (* (cbrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))) (cbrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))))
  (cbrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (* (* (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))) (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))) (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (sqrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (sqrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (- (* i i))
  (- (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))
  (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ i (* 2.0 2.0))
  (/ 1 (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))
  (/ (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) (* i i))
  (/ (* i i) (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) i)
  (/ (* i i) (* (- (pow (* (* 2.0 i) (* 2.0 i)) 3) (pow 1.0 3)) (* 2.0 2.0)))
  (/ (* i i) (* (- (* (* (* 2.0 i) (* 2.0 i)) (* (* 2.0 i) (* 2.0 i))) (* 1.0 1.0)) (* 2.0 2.0)))
  (- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
  (+ (* 0.00390625 (/ 1 (pow i 4))) (+ (* 0.015625 (/ 1 (pow i 2))) 0.0625))
  (+ (* 0.00390625 (/ 1 (pow i 4))) (+ (* 0.015625 (/ 1 (pow i 2))) 0.0625))
0.531 * * [simplify]: iteration  0 :  98  enodes  (cost  851 )
0.553 * * [simplify]: iteration  1 :  312  enodes  (cost  830 )
0.628 * * [simplify]: iteration  2 :  1423  enodes  (cost  578 )
0.989 * * [simplify]: iteration  done :  5001  enodes  (cost  578 )
0.989 * [simplify]: Simplified to:
   (expm1 (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log1p (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (log (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (exp (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (* (cbrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))) (cbrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))))
  (cbrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (/ (pow i 6) (pow (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) 3))
  (sqrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (sqrt (/ (* i i) (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))))
  (- (* i i))
  (- (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))
  (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ i (* 2.0 2.0))
  (/ 1 (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)))
  (/ (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0)) (* i i))
  (/ (* i i) (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (* (* 2.0 2.0) (/ (- (* (* 2.0 i) (* 2.0 i)) 1.0) i))
  (/ i (/ (* 2.0 (- (pow (* 2.0 i) 6) (pow 1.0 3))) (/ i 2.0)))
  (/ (pow i 2) (* (* 2.0 2.0) (fma (* 2.0 i) (pow (* 2.0 i) 3) (- (* 1.0 1.0)))))
  (- (fma 0.25 (* i i) (fma 1.0 (pow i 4) (* 4.0 (pow i 6)))))
  (+ (/ 0.00390625 (pow i 4)) (+ (/ 0.015625 (* i i)) 0.0625))
  (+ (/ 0.00390625 (pow i 4)) (+ (/ 0.015625 (* i i)) 0.0625))
0.990 * * * [progress]: adding candidates to table
1.043 * * [progress]: iteration 2 / 4
1.043 * * * [progress]: picking best candidate
1.046 * * * * [pick]: Picked  #<alt (λ (i) (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))>
1.046 * * * [progress]: localizing error
1.056 * * * [progress]: generating rewritten candidates
1.056 * * * * [progress]: [ 1 / 2 ] rewriting at (2 1)
1.077 * * * * [progress]: [ 2 / 2 ] rewriting at (2)
1.140 * * * [progress]: generating series expansions
1.140 * * * * [progress]: [ 1 / 2 ] generating series at (2 1)
1.140 * [approximate]: Taking taylor expansion of (/ i (- (* 4.0 (pow i 2)) 1.0)) in (i) around 0
1.140 * [taylor]: Taking taylor expansion of (/ i (- (* 4.0 (pow i 2)) 1.0)) in i
1.143 * [taylor]: Taking taylor expansion of i in i
1.143 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow i 2)) 1.0) in i
1.143 * [taylor]: Taking taylor expansion of (* 4.0 (pow i 2)) in i
1.143 * [taylor]: Taking taylor expansion of 4.0 in i
1.143 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.143 * [taylor]: Taking taylor expansion of i in i
1.143 * [taylor]: Taking taylor expansion of 1.0 in i
1.145 * [taylor]: Taking taylor expansion of (/ i (- (* 4.0 (pow i 2)) 1.0)) in i
1.145 * [taylor]: Taking taylor expansion of i in i
1.145 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow i 2)) 1.0) in i
1.145 * [taylor]: Taking taylor expansion of (* 4.0 (pow i 2)) in i
1.145 * [taylor]: Taking taylor expansion of 4.0 in i
1.145 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.145 * [taylor]: Taking taylor expansion of i in i
1.145 * [taylor]: Taking taylor expansion of 1.0 in i
1.160 * [approximate]: Taking taylor expansion of (/ 1 (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in (i) around 0
1.160 * [taylor]: Taking taylor expansion of (/ 1 (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.161 * [taylor]: Taking taylor expansion of (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.161 * [taylor]: Taking taylor expansion of i in i
1.161 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.161 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.161 * [taylor]: Taking taylor expansion of 4.0 in i
1.161 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.161 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.161 * [taylor]: Taking taylor expansion of i in i
1.161 * [taylor]: Taking taylor expansion of 1.0 in i
1.164 * [taylor]: Taking taylor expansion of (/ 1 (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.164 * [taylor]: Taking taylor expansion of (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.164 * [taylor]: Taking taylor expansion of i in i
1.164 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.165 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.165 * [taylor]: Taking taylor expansion of 4.0 in i
1.165 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.165 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.165 * [taylor]: Taking taylor expansion of i in i
1.165 * [taylor]: Taking taylor expansion of 1.0 in i
1.190 * [approximate]: Taking taylor expansion of (/ -1 (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in (i) around 0
1.190 * [taylor]: Taking taylor expansion of (/ -1 (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.190 * [taylor]: Taking taylor expansion of -1 in i
1.190 * [taylor]: Taking taylor expansion of (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.190 * [taylor]: Taking taylor expansion of i in i
1.190 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.190 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.190 * [taylor]: Taking taylor expansion of 4.0 in i
1.190 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.190 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.190 * [taylor]: Taking taylor expansion of i in i
1.191 * [taylor]: Taking taylor expansion of 1.0 in i
1.194 * [taylor]: Taking taylor expansion of (/ -1 (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.194 * [taylor]: Taking taylor expansion of -1 in i
1.194 * [taylor]: Taking taylor expansion of (* i (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.194 * [taylor]: Taking taylor expansion of i in i
1.194 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.194 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.194 * [taylor]: Taking taylor expansion of 4.0 in i
1.194 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.194 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.194 * [taylor]: Taking taylor expansion of i in i
1.195 * [taylor]: Taking taylor expansion of 1.0 in i
1.224 * * * * [progress]: [ 2 / 2 ] generating series at (2)
1.224 * [approximate]: Taking taylor expansion of (* 0.25 (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0))) in (i) around 0
1.224 * [taylor]: Taking taylor expansion of (* 0.25 (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0))) in i
1.224 * [taylor]: Taking taylor expansion of 0.25 in i
1.224 * [taylor]: Taking taylor expansion of (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0)) in i
1.224 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.224 * [taylor]: Taking taylor expansion of i in i
1.224 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow i 2)) 1.0) in i
1.224 * [taylor]: Taking taylor expansion of (* 4.0 (pow i 2)) in i
1.224 * [taylor]: Taking taylor expansion of 4.0 in i
1.224 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.224 * [taylor]: Taking taylor expansion of i in i
1.224 * [taylor]: Taking taylor expansion of 1.0 in i
1.226 * [taylor]: Taking taylor expansion of (* 0.25 (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0))) in i
1.226 * [taylor]: Taking taylor expansion of 0.25 in i
1.226 * [taylor]: Taking taylor expansion of (/ (pow i 2) (- (* 4.0 (pow i 2)) 1.0)) in i
1.226 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.226 * [taylor]: Taking taylor expansion of i in i
1.226 * [taylor]: Taking taylor expansion of (- (* 4.0 (pow i 2)) 1.0) in i
1.226 * [taylor]: Taking taylor expansion of (* 4.0 (pow i 2)) in i
1.226 * [taylor]: Taking taylor expansion of 4.0 in i
1.226 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.226 * [taylor]: Taking taylor expansion of i in i
1.226 * [taylor]: Taking taylor expansion of 1.0 in i
1.249 * [approximate]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in (i) around 0
1.249 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.249 * [taylor]: Taking taylor expansion of 0.25 in i
1.249 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.249 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.249 * [taylor]: Taking taylor expansion of i in i
1.249 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.249 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.249 * [taylor]: Taking taylor expansion of 4.0 in i
1.249 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.250 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.250 * [taylor]: Taking taylor expansion of i in i
1.250 * [taylor]: Taking taylor expansion of 1.0 in i
1.251 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.251 * [taylor]: Taking taylor expansion of 0.25 in i
1.251 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.251 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.251 * [taylor]: Taking taylor expansion of i in i
1.251 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.251 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.251 * [taylor]: Taking taylor expansion of 4.0 in i
1.251 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.252 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.252 * [taylor]: Taking taylor expansion of i in i
1.252 * [taylor]: Taking taylor expansion of 1.0 in i
1.276 * [approximate]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in (i) around 0
1.276 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.276 * [taylor]: Taking taylor expansion of 0.25 in i
1.276 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.276 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.276 * [taylor]: Taking taylor expansion of i in i
1.276 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.276 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.276 * [taylor]: Taking taylor expansion of 4.0 in i
1.276 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.276 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.276 * [taylor]: Taking taylor expansion of i in i
1.277 * [taylor]: Taking taylor expansion of 1.0 in i
1.278 * [taylor]: Taking taylor expansion of (/ 0.25 (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0))) in i
1.278 * [taylor]: Taking taylor expansion of 0.25 in i
1.278 * [taylor]: Taking taylor expansion of (* (pow i 2) (- (* 4.0 (/ 1 (pow i 2))) 1.0)) in i
1.278 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.278 * [taylor]: Taking taylor expansion of i in i
1.278 * [taylor]: Taking taylor expansion of (- (* 4.0 (/ 1 (pow i 2))) 1.0) in i
1.278 * [taylor]: Taking taylor expansion of (* 4.0 (/ 1 (pow i 2))) in i
1.278 * [taylor]: Taking taylor expansion of 4.0 in i
1.278 * [taylor]: Taking taylor expansion of (/ 1 (pow i 2)) in i
1.278 * [taylor]: Taking taylor expansion of (pow i 2) in i
1.278 * [taylor]: Taking taylor expansion of i in i
1.278 * [taylor]: Taking taylor expansion of 1.0 in i
1.304 * * * [progress]: simplifying candidates
1.305 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (log1p (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (- (log i) (log (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (log (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (exp (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (* (* i i) i) (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (* (cbrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (cbrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))))
  (cbrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (* (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (- i)
  (- (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ (* (cbrt i) (cbrt i)) (* (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))))
  (/ (cbrt i) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (* (cbrt i) (cbrt i)) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (cbrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (* (cbrt i) (cbrt i)) 1)
  (/ (cbrt i) (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ (* (cbrt i) (cbrt i)) (+ (* 2.0 i) (sqrt 1.0)))
  (/ (cbrt i) (- (* 2.0 i) (sqrt 1.0)))
  (/ (sqrt i) (* (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))))
  (/ (sqrt i) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ (sqrt i) 1)
  (/ (sqrt i) (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ (sqrt i) (+ (* 2.0 i) (sqrt 1.0)))
  (/ (sqrt i) (- (* 2.0 i) (sqrt 1.0)))
  (/ 1 (* (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))))
  (/ i (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ 1 (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ i (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ 1 1)
  (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ 1 (+ (* 2.0 i) (sqrt 1.0)))
  (/ i (- (* 2.0 i) (sqrt 1.0)))
  (/ 1 (- (* (* 2.0 i) (* 2.0 i)) 1.0))
  (/ (- (* (* 2.0 i) (* 2.0 i)) 1.0) i)
  (/ i (* (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))))
  (/ i (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0)))
  (/ i 1)
  (/ i (+ (* 2.0 i) (sqrt 1.0)))
  (/ (- (* (* 2.0 i) (* 2.0 i)) 1.0) (cbrt i))
  (/ (- (* (* 2.0 i) (* 2.0 i)) 1.0) (sqrt i))
  (/ (- (* (* 2.0 i) (* 2.0 i)) 1.0) i)
  (/ i (- (pow (* (* 2.0 i) (* 2.0 i)) 3) (pow 1.0 3)))
  (/ i (- (* (* (* 2.0 i) (* 2.0 i)) (* (* 2.0 i) (* 2.0 i))) (* 1.0 1.0)))
  (expm1 (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (log1p (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))
  (+ (- (log i) (log (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (- (log i) (+ (log 2.0) (log 2.0))))
  (+ (- (log i) (log (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (- (log i) (log (* 2.0 2.0))))
  (+ (- (log i) (log (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (log (/ i (* 2.0 2.0))))
  (+ (log (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (- (log i) (+ (log 2.0) (log 2.0))))
  (+ (log (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (- (log i) (log (* 2.0 2.0))))
  (+ (log (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (log (/ i (* 2.0 2.0))))
  (log (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (exp (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (* (/ (* (* i i) i) (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (* (* i i) i) (* (* (* 2.0 2.0) 2.0) (* (* 2.0 2.0) 2.0))))
  (* (/ (* (* i i) i) (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (* (* i i) i) (* (* (* 2.0 2.0) (* 2.0 2.0)) (* 2.0 2.0))))
  (* (/ (* (* i i) i) (* (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (* (* (/ i (* 2.0 2.0)) (/ i (* 2.0 2.0))) (/ i (* 2.0 2.0))))
  (* (* (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (* (* i i) i) (* (* (* 2.0 2.0) 2.0) (* (* 2.0 2.0) 2.0))))
  (* (* (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (* (* i i) i) (* (* (* 2.0 2.0) (* 2.0 2.0)) (* 2.0 2.0))))
  (* (* (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (* (* (/ i (* 2.0 2.0)) (/ i (* 2.0 2.0))) (/ i (* 2.0 2.0))))
  (* (cbrt (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))) (cbrt (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))))
  (cbrt (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (* (* (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))) (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))) (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (sqrt (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (sqrt (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0))))
  (* i i)
  (* (- (* (* 2.0 i) (* 2.0 i)) 1.0) (* 2.0 2.0))
  (* (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (sqrt (/ i (* 2.0 2.0))))
  (* (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (sqrt (/ i (* 2.0 2.0))))
  (* (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (sqrt i) 2.0))
  (* (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (sqrt i) 2.0))
  (* (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (sqrt (/ i (* 2.0 2.0))))
  (* (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (sqrt (/ i (* 2.0 2.0))))
  (* (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (sqrt i) 2.0))
  (* (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ (sqrt i) 2.0))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (* (cbrt (/ i (* 2.0 2.0))) (cbrt (/ i (* 2.0 2.0)))))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (sqrt (/ i (* 2.0 2.0))))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ (* (cbrt i) (cbrt i)) 2.0))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ (sqrt i) 2.0))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ 1 2.0))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) 1)
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) i)
  (* (cbrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (sqrt (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ (cbrt i) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ (cbrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ (cbrt i) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))
  (* (/ (cbrt i) (- (* 2.0 i) (sqrt 1.0))) (/ i (* 2.0 2.0)))
  (* (/ (sqrt i) (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ (sqrt i) (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ (sqrt i) (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))
  (* (/ (sqrt i) (- (* 2.0 i) (sqrt 1.0))) (/ i (* 2.0 2.0)))
  (* (/ i (cbrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ i (sqrt (- (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))
  (* (/ i (- (* 2.0 i) (sqrt 1.0))) (/ i (* 2.0 2.0)))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))
  (* (/ 1 (- (* (* 2.0 i) (* 2.0 i)) 1.0)) (/ i (* 2.0 2.0)))
  (* (+ (* (* (* 2.0 i) (* 2.0 i)) (* (* 2.0 i) (* 2.0 i))) (+ (* 1.0 1.0) (* (* (* 2.0 i) (* 2.0 i)) 1.0))) (/ i (* 2.0 2.0)))
  (* (+ (* (* 2.0 i) (* 2.0 i)) 1.0) (/ i (* 2.0 2.0)))
  (* (/ i (- (* (* 2.0 i) (* 2.0 i)) 1.0)) i)
  (* i (/ i (* 2.0 2.0)))
  (- (+ (* 4.0 (pow i 3)) (+ (* 16.0 (pow i 5)) (* 1.0 i))))
  (+ (* 0.015625 (/ 1 (pow i 5))) (+ (* 0.25 (/ 1 i)) (* 0.0625 (/ 1 (pow i 3)))))
  (+ (* 0.015625 (/ 1 (pow i 5))) (+ (* 0.25 (/ 1 i)) (* 0.0625 (/ 1 (pow i 3)))))
  (- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
  (+ (* 0.00390625 (/ 1 (pow i 4))) (+ (* 0.015625 (/ 1 (pow i 2))) 0.0625))
  (+ (* 0.00390625 (/ 1 (pow i 4))) (+ (* 0.015625 (/ 1 (pow i 2))) 0.0625))
1.311 * * [simplify]: iteration  0 :  192  enodes  (cost  2054 )
1.346 * * [simplify]: iteration  1 :  557  enodes  (cost  1988 )