0.862 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.263 * * * [progress]: [2/2] Setting up program.
0.266 * [progress]: [Phase 2 of 3] Improving.
0.269 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (- (+ f n)) (- f n))
0.271 * * [simplify]: iteration  0 :  6  enodes  (cost  8 )
0.275 * * [simplify]: iteration  1 :  13  enodes  (cost  8 )
0.276 * * [simplify]: iteration  2 :  16  enodes  (cost  8 )
0.278 * * [simplify]: iteration  3 :  20  enodes  (cost  8 )
0.280 * * [simplify]: iteration  4 :  26  enodes  (cost  8 )
0.283 * * [simplify]: iteration  5 :  31  enodes  (cost  8 )
0.286 * * [simplify]: iteration  6 :  32  enodes  (cost  8 )
0.289 * * [simplify]: iteration  done :  32  enodes  (cost  8 )
0.290 * [simplify]: Simplified to:
   (/ (- (+ f n)) (- f n))
0.291 * * [progress]: iteration 1 / 4
0.291 * * * [progress]: picking best candidate
0.292 * * * * [pick]: Picked  #<alt (λ (f n) (/ (- (+ f n)) (- f n)))>
0.292 * * * [progress]: localizing error
0.299 * * * [progress]: generating rewritten candidates
0.300 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.325 * * * [progress]: generating series expansions
0.326 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.330 * [approximate]: Taking taylor expansion of (* -1 (/ (+ n f) (- f n))) in (f n) around 0
0.331 * [taylor]: Taking taylor expansion of (* -1 (/ (+ n f) (- f n))) in n
0.331 * [taylor]: Taking taylor expansion of -1 in n
0.331 * [taylor]: Taking taylor expansion of (/ (+ n f) (- f n)) in n
0.331 * [taylor]: Taking taylor expansion of (+ n f) in n
0.331 * [taylor]: Taking taylor expansion of n in n
0.331 * [taylor]: Taking taylor expansion of f in n
0.331 * [taylor]: Taking taylor expansion of (- f n) in n
0.331 * [taylor]: Taking taylor expansion of f in n
0.331 * [taylor]: Taking taylor expansion of n in n
0.332 * [taylor]: Taking taylor expansion of (* -1 (/ (+ n f) (- f n))) in f
0.332 * [taylor]: Taking taylor expansion of -1 in f
0.332 * [taylor]: Taking taylor expansion of (/ (+ n f) (- f n)) in f
0.332 * [taylor]: Taking taylor expansion of (+ n f) in f
0.332 * [taylor]: Taking taylor expansion of n in f
0.332 * [taylor]: Taking taylor expansion of f in f
0.332 * [taylor]: Taking taylor expansion of (- f n) in f
0.332 * [taylor]: Taking taylor expansion of f in f
0.332 * [taylor]: Taking taylor expansion of n in f
0.332 * [taylor]: Taking taylor expansion of (* -1 (/ (+ n f) (- f n))) in f
0.332 * [taylor]: Taking taylor expansion of -1 in f
0.332 * [taylor]: Taking taylor expansion of (/ (+ n f) (- f n)) in f
0.332 * [taylor]: Taking taylor expansion of (+ n f) in f
0.332 * [taylor]: Taking taylor expansion of n in f
0.332 * [taylor]: Taking taylor expansion of f in f
0.332 * [taylor]: Taking taylor expansion of (- f n) in f
0.332 * [taylor]: Taking taylor expansion of f in f
0.332 * [taylor]: Taking taylor expansion of n in f
0.333 * [taylor]: Taking taylor expansion of 1 in n
0.335 * [taylor]: Taking taylor expansion of (* 2 (/ 1 n)) in n
0.335 * [taylor]: Taking taylor expansion of 2 in n
0.335 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.335 * [taylor]: Taking taylor expansion of n in n
0.347 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow n 2))) in n
0.347 * [taylor]: Taking taylor expansion of 2 in n
0.347 * [taylor]: Taking taylor expansion of (/ 1 (pow n 2)) in n
0.347 * [taylor]: Taking taylor expansion of (pow n 2) in n
0.347 * [taylor]: Taking taylor expansion of n in n
0.354 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow n 3))) in n
0.354 * [taylor]: Taking taylor expansion of 2 in n
0.354 * [taylor]: Taking taylor expansion of (/ 1 (pow n 3)) in n
0.354 * [taylor]: Taking taylor expansion of (pow n 3) in n
0.354 * [taylor]: Taking taylor expansion of n in n
0.360 * [approximate]: Taking taylor expansion of (* -1 (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n)))) in (f n) around 0
0.360 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n)))) in n
0.360 * [taylor]: Taking taylor expansion of -1 in n
0.360 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n))) in n
0.360 * [taylor]: Taking taylor expansion of (+ (/ 1 f) (/ 1 n)) in n
0.360 * [taylor]: Taking taylor expansion of (/ 1 f) in n
0.360 * [taylor]: Taking taylor expansion of f in n
0.360 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.360 * [taylor]: Taking taylor expansion of n in n
0.361 * [taylor]: Taking taylor expansion of (- (/ 1 f) (/ 1 n)) in n
0.361 * [taylor]: Taking taylor expansion of (/ 1 f) in n
0.361 * [taylor]: Taking taylor expansion of f in n
0.361 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.361 * [taylor]: Taking taylor expansion of n in n
0.362 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n)))) in f
0.362 * [taylor]: Taking taylor expansion of -1 in f
0.362 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n))) in f
0.362 * [taylor]: Taking taylor expansion of (+ (/ 1 f) (/ 1 n)) in f
0.362 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.362 * [taylor]: Taking taylor expansion of f in f
0.363 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.363 * [taylor]: Taking taylor expansion of n in f
0.363 * [taylor]: Taking taylor expansion of (- (/ 1 f) (/ 1 n)) in f
0.363 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.363 * [taylor]: Taking taylor expansion of f in f
0.363 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.363 * [taylor]: Taking taylor expansion of n in f
0.364 * [taylor]: Taking taylor expansion of (* -1 (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n)))) in f
0.364 * [taylor]: Taking taylor expansion of -1 in f
0.364 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 f) (/ 1 n))) in f
0.364 * [taylor]: Taking taylor expansion of (+ (/ 1 f) (/ 1 n)) in f
0.364 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.364 * [taylor]: Taking taylor expansion of f in f
0.364 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.364 * [taylor]: Taking taylor expansion of n in f
0.364 * [taylor]: Taking taylor expansion of (- (/ 1 f) (/ 1 n)) in f
0.364 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.364 * [taylor]: Taking taylor expansion of f in f
0.365 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.365 * [taylor]: Taking taylor expansion of n in f
0.366 * [taylor]: Taking taylor expansion of -1 in n
0.367 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 n))) in n
0.367 * [taylor]: Taking taylor expansion of (* 2 (/ 1 n)) in n
0.367 * [taylor]: Taking taylor expansion of 2 in n
0.367 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.367 * [taylor]: Taking taylor expansion of n in n
0.371 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow n 2)))) in n
0.371 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow n 2))) in n
0.371 * [taylor]: Taking taylor expansion of 2 in n
0.371 * [taylor]: Taking taylor expansion of (/ 1 (pow n 2)) in n
0.371 * [taylor]: Taking taylor expansion of (pow n 2) in n
0.371 * [taylor]: Taking taylor expansion of n in n
0.379 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow n 3)))) in n
0.379 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow n 3))) in n
0.379 * [taylor]: Taking taylor expansion of 2 in n
0.379 * [taylor]: Taking taylor expansion of (/ 1 (pow n 3)) in n
0.379 * [taylor]: Taking taylor expansion of (pow n 3) in n
0.379 * [taylor]: Taking taylor expansion of n in n
0.385 * [approximate]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 n) (/ 1 f))) in (f n) around 0
0.385 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 n) (/ 1 f))) in n
0.385 * [taylor]: Taking taylor expansion of (+ (/ 1 f) (/ 1 n)) in n
0.385 * [taylor]: Taking taylor expansion of (/ 1 f) in n
0.385 * [taylor]: Taking taylor expansion of f in n
0.385 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.385 * [taylor]: Taking taylor expansion of n in n
0.386 * [taylor]: Taking taylor expansion of (- (/ 1 n) (/ 1 f)) in n
0.386 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.386 * [taylor]: Taking taylor expansion of n in n
0.386 * [taylor]: Taking taylor expansion of (/ 1 f) in n
0.386 * [taylor]: Taking taylor expansion of f in n
0.387 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 n) (/ 1 f))) in f
0.387 * [taylor]: Taking taylor expansion of (+ (/ 1 f) (/ 1 n)) in f
0.387 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.387 * [taylor]: Taking taylor expansion of f in f
0.387 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.387 * [taylor]: Taking taylor expansion of n in f
0.387 * [taylor]: Taking taylor expansion of (- (/ 1 n) (/ 1 f)) in f
0.387 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.387 * [taylor]: Taking taylor expansion of n in f
0.387 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.387 * [taylor]: Taking taylor expansion of f in f
0.388 * [taylor]: Taking taylor expansion of (/ (+ (/ 1 f) (/ 1 n)) (- (/ 1 n) (/ 1 f))) in f
0.388 * [taylor]: Taking taylor expansion of (+ (/ 1 f) (/ 1 n)) in f
0.388 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.388 * [taylor]: Taking taylor expansion of f in f
0.389 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.389 * [taylor]: Taking taylor expansion of n in f
0.389 * [taylor]: Taking taylor expansion of (- (/ 1 n) (/ 1 f)) in f
0.389 * [taylor]: Taking taylor expansion of (/ 1 n) in f
0.389 * [taylor]: Taking taylor expansion of n in f
0.389 * [taylor]: Taking taylor expansion of (/ 1 f) in f
0.389 * [taylor]: Taking taylor expansion of f in f
0.390 * [taylor]: Taking taylor expansion of -1 in n
0.392 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 n))) in n
0.392 * [taylor]: Taking taylor expansion of (* 2 (/ 1 n)) in n
0.392 * [taylor]: Taking taylor expansion of 2 in n
0.392 * [taylor]: Taking taylor expansion of (/ 1 n) in n
0.392 * [taylor]: Taking taylor expansion of n in n
0.396 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow n 2)))) in n
0.396 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow n 2))) in n
0.396 * [taylor]: Taking taylor expansion of 2 in n
0.396 * [taylor]: Taking taylor expansion of (/ 1 (pow n 2)) in n
0.396 * [taylor]: Taking taylor expansion of (pow n 2) in n
0.396 * [taylor]: Taking taylor expansion of n in n
0.403 * [taylor]: Taking taylor expansion of (- (* 2 (/ 1 (pow n 3)))) in n
0.403 * [taylor]: Taking taylor expansion of (* 2 (/ 1 (pow n 3))) in n
0.404 * [taylor]: Taking taylor expansion of 2 in n
0.404 * [taylor]: Taking taylor expansion of (/ 1 (pow n 3)) in n
0.404 * [taylor]: Taking taylor expansion of (pow n 3) in n
0.404 * [taylor]: Taking taylor expansion of n in n
0.409 * * * [progress]: simplifying candidates
0.411 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (expm1 (/ (- (+ f n)) (- f n)))
  (log1p (/ (- (+ f n)) (- f n)))
  (- (log (- (+ f n))) (log (- f n)))
  (log (/ (- (+ f n)) (- f n)))
  (exp (/ (- (+ f n)) (- f n)))
  (/ (* (* (- (+ f n)) (- (+ f n))) (- (+ f n))) (* (* (- f n) (- f n)) (- f n)))
  (* (cbrt (/ (- (+ f n)) (- f n))) (cbrt (/ (- (+ f n)) (- f n))))
  (cbrt (/ (- (+ f n)) (- f n)))
  (* (* (/ (- (+ f n)) (- f n)) (/ (- (+ f n)) (- f n))) (/ (- (+ f n)) (- f n)))
  (sqrt (/ (- (+ f n)) (- f n)))
  (sqrt (/ (- (+ f n)) (- f n)))
  (- (- (+ f n)))
  (- (- f n))
  (/ 0 (- f n))
  (/ (+ f n) (- f n))
  (/ (* (cbrt (- (+ f n))) (cbrt (- (+ f n)))) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (cbrt (- (+ f n))) (cbrt (- f n)))
  (/ (* (cbrt (- (+ f n))) (cbrt (- (+ f n)))) (sqrt (- f n)))
  (/ (cbrt (- (+ f n))) (sqrt (- f n)))
  (/ (* (cbrt (- (+ f n))) (cbrt (- (+ f n)))) 1)
  (/ (cbrt (- (+ f n))) (- f n))
  (/ (* (cbrt (- (+ f n))) (cbrt (- (+ f n)))) (+ (sqrt f) (sqrt n)))
  (/ (cbrt (- (+ f n))) (- (sqrt f) (sqrt n)))
  (/ (* (cbrt (- (+ f n))) (cbrt (- (+ f n)))) 1)
  (/ (cbrt (- (+ f n))) (- f n))
  (/ (sqrt (- (+ f n))) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (sqrt (- (+ f n))) (cbrt (- f n)))
  (/ (sqrt (- (+ f n))) (sqrt (- f n)))
  (/ (sqrt (- (+ f n))) (sqrt (- f n)))
  (/ (sqrt (- (+ f n))) 1)
  (/ (sqrt (- (+ f n))) (- f n))
  (/ (sqrt (- (+ f n))) (+ (sqrt f) (sqrt n)))
  (/ (sqrt (- (+ f n))) (- (sqrt f) (sqrt n)))
  (/ (sqrt (- (+ f n))) 1)
  (/ (sqrt (- (+ f n))) (- f n))
  (/ 1 (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (- (+ f n)) (cbrt (- f n)))
  (/ 1 (sqrt (- f n)))
  (/ (- (+ f n)) (sqrt (- f n)))
  (/ 1 1)
  (/ (- (+ f n)) (- f n))
  (/ 1 (+ (sqrt f) (sqrt n)))
  (/ (- (+ f n)) (- (sqrt f) (sqrt n)))
  (/ 1 1)
  (/ (- (+ f n)) (- f n))
  (/ -1 (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (+ f n) (cbrt (- f n)))
  (/ -1 (sqrt (- f n)))
  (/ (+ f n) (sqrt (- f n)))
  (/ -1 1)
  (/ (+ f n) (- f n))
  (/ -1 (+ (sqrt f) (sqrt n)))
  (/ (+ f n) (- (sqrt f) (sqrt n)))
  (/ -1 1)
  (/ (+ f n) (- f n))
  (/ (- (* (cbrt (+ f n)) (cbrt (+ f n)))) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (cbrt (+ f n)) (cbrt (- f n)))
  (/ (- (* (cbrt (+ f n)) (cbrt (+ f n)))) (sqrt (- f n)))
  (/ (cbrt (+ f n)) (sqrt (- f n)))
  (/ (- (* (cbrt (+ f n)) (cbrt (+ f n)))) 1)
  (/ (cbrt (+ f n)) (- f n))
  (/ (- (* (cbrt (+ f n)) (cbrt (+ f n)))) (+ (sqrt f) (sqrt n)))
  (/ (cbrt (+ f n)) (- (sqrt f) (sqrt n)))
  (/ (- (* (cbrt (+ f n)) (cbrt (+ f n)))) 1)
  (/ (cbrt (+ f n)) (- f n))
  (/ (- (sqrt (+ f n))) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (sqrt (+ f n)) (cbrt (- f n)))
  (/ (- (sqrt (+ f n))) (sqrt (- f n)))
  (/ (sqrt (+ f n)) (sqrt (- f n)))
  (/ (- (sqrt (+ f n))) 1)
  (/ (sqrt (+ f n)) (- f n))
  (/ (- (sqrt (+ f n))) (+ (sqrt f) (sqrt n)))
  (/ (sqrt (+ f n)) (- (sqrt f) (sqrt n)))
  (/ (- (sqrt (+ f n))) 1)
  (/ (sqrt (+ f n)) (- f n))
  (/ (- 1) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (+ f n) (cbrt (- f n)))
  (/ (- 1) (sqrt (- f n)))
  (/ (+ f n) (sqrt (- f n)))
  (/ (- 1) 1)
  (/ (+ f n) (- f n))
  (/ (- 1) (+ (sqrt f) (sqrt n)))
  (/ (+ f n) (- (sqrt f) (sqrt n)))
  (/ (- 1) 1)
  (/ (+ f n) (- f n))
  (/ (- 1) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (+ f n) (cbrt (- f n)))
  (/ (- 1) (sqrt (- f n)))
  (/ (+ f n) (sqrt (- f n)))
  (/ (- 1) 1)
  (/ (+ f n) (- f n))
  (/ (- 1) (+ (sqrt f) (sqrt n)))
  (/ (+ f n) (- (sqrt f) (sqrt n)))
  (/ (- 1) 1)
  (/ (+ f n) (- f n))
  (/ (* (cbrt (+ f n)) (cbrt (+ f n))) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (- (cbrt (+ f n))) (cbrt (- f n)))
  (/ (* (cbrt (+ f n)) (cbrt (+ f n))) (sqrt (- f n)))
  (/ (- (cbrt (+ f n))) (sqrt (- f n)))
  (/ (* (cbrt (+ f n)) (cbrt (+ f n))) 1)
  (/ (- (cbrt (+ f n))) (- f n))
  (/ (* (cbrt (+ f n)) (cbrt (+ f n))) (+ (sqrt f) (sqrt n)))
  (/ (- (cbrt (+ f n))) (- (sqrt f) (sqrt n)))
  (/ (* (cbrt (+ f n)) (cbrt (+ f n))) 1)
  (/ (- (cbrt (+ f n))) (- f n))
  (/ (sqrt (+ f n)) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (- (sqrt (+ f n))) (cbrt (- f n)))
  (/ (sqrt (+ f n)) (sqrt (- f n)))
  (/ (- (sqrt (+ f n))) (sqrt (- f n)))
  (/ (sqrt (+ f n)) 1)
  (/ (- (sqrt (+ f n))) (- f n))
  (/ (sqrt (+ f n)) (+ (sqrt f) (sqrt n)))
  (/ (- (sqrt (+ f n))) (- (sqrt f) (sqrt n)))
  (/ (sqrt (+ f n)) 1)
  (/ (- (sqrt (+ f n))) (- f n))
  (/ 1 (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (- (+ f n)) (cbrt (- f n)))
  (/ 1 (sqrt (- f n)))
  (/ (- (+ f n)) (sqrt (- f n)))
  (/ 1 1)
  (/ (- (+ f n)) (- f n))
  (/ 1 (+ (sqrt f) (sqrt n)))
  (/ (- (+ f n)) (- (sqrt f) (sqrt n)))
  (/ 1 1)
  (/ (- (+ f n)) (- f n))
  (/ 1 (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (- (+ f n)) (cbrt (- f n)))
  (/ 1 (sqrt (- f n)))
  (/ (- (+ f n)) (sqrt (- f n)))
  (/ 1 1)
  (/ (- (+ f n)) (- f n))
  (/ 1 (+ (sqrt f) (sqrt n)))
  (/ (- (+ f n)) (- (sqrt f) (sqrt n)))
  (/ 1 1)
  (/ (- (+ f n)) (- f n))
  (/ 1 (- f n))
  (/ (- f n) (- (+ f n)))
  (/ (+ f n) (- f n))
  (/ (- (+ f n)) (* (cbrt (- f n)) (cbrt (- f n))))
  (/ (- (+ f n)) (sqrt (- f n)))
  (/ (- (+ f n)) 1)
  (/ (- (+ f n)) (+ (sqrt f) (sqrt n)))
  (/ (- (+ f n)) 1)
  (/ (- f n) (cbrt (- (+ f n))))
  (/ (- f n) (sqrt (- (+ f n))))
  (/ (- f n) (- (+ f n)))
  (/ (- f n) (+ f n))
  (/ (- f n) (cbrt (+ f n)))
  (/ (- f n) (sqrt (+ f n)))
  (/ (- f n) (+ f n))
  (/ (- f n) (+ f n))
  (/ (- f n) (- (cbrt (+ f n))))
  (/ (- f n) (- (sqrt (+ f n))))
  (/ (- f n) (- (+ f n)))
  (/ (- f n) (- (+ f n)))
  (/ (- (+ f n)) (- (pow f 3) (pow n 3)))
  (/ (- (+ f n)) (- (* f f) (* n n)))
  (* (- f n) (+ (* f f) (- (* n n) (* f n))))
  (* (- f n) (- f n))
  1
  -1
  -1
0.415 * * [simplify]: iteration  0 :  135  enodes  (cost  1469 )
0.441 * * [simplify]: iteration  1 :  298  enodes  (cost  1395 )
0.491 * * [simplify]: iteration  2 :  832  enodes  (cost  1365 )