0.002 * [progress]: [Phase 1 of 3] Setting up.
0.003 * * * [progress]: [1/2] Preparing points
0.146 * * * [progress]: [2/2] Setting up program.
0.149 * [progress]: [Phase 2 of 3] Improving.
0.149 * * * * [progress]: [ 1 / 1 ] simplifiying candidate #<alt (λ (x y) (- (log (+ 1 (exp x))) (* x y)))>
0.149 * [simplify]: Simplifying:
  (- (log (+ 1 (exp x))) (* x y))
0.149 * * [simplify]: iteration 1: (8 enodes)
0.152 * * [simplify]: iteration 2: (31 enodes)
0.156 * * [simplify]: iteration 3: (42 enodes)
0.163 * * [simplify]: iteration 4: (50 enodes)
0.169 * * [simplify]: Extracting #0: cost 1 inf + 0
0.169 * * [simplify]: Extracting #1: cost 9 inf + 0
0.169 * * [simplify]: Extracting #2: cost 11 inf + 167
0.169 * * [simplify]: Extracting #3: cost 7 inf + 847
0.169 * * [simplify]: Extracting #4: cost 2 inf + 1363
0.170 * * [simplify]: Extracting #5: cost 1 inf + 1475
0.170 * * [simplify]: Extracting #6: cost 0 inf + 1587
0.170 * [simplify]: Simplified to:
  (- (log1p (exp x)) (* y x))
0.176 * * [progress]: iteration 1 / 4
0.176 * * * [progress]: picking best candidate
0.178 * * * * [pick]: Picked  #<alt (λ (x y) (- (log1p (exp x)) (* y x)))>
0.178 * * * [progress]: localizing error
0.195 * * * [progress]: generating rewritten candidates
0.195 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1)
0.196 * * * [progress]: generating series expansions
0.196 * * * * [progress]: [ 1 / 1 ] generating series at (2 1)
0.196 * [backup-simplify]: Simplify (log1p (exp x)) into (log1p (exp x))
0.196 * [approximate]: Taking taylor expansion of (log1p (exp x)) in (x) around 0
0.196 * [taylor]: Taking taylor expansion of (log1p (exp x)) in x
0.196 * [taylor]: Rewrote expression to (log (+ 1 (exp x)))
0.196 * [taylor]: Taking taylor expansion of (+ 1 (exp x)) in x
0.196 * [taylor]: Taking taylor expansion of 1 in x
0.196 * [backup-simplify]: Simplify 1 into 1
0.196 * [taylor]: Taking taylor expansion of (exp x) in x
0.196 * [taylor]: Taking taylor expansion of x in x
0.196 * [backup-simplify]: Simplify 0 into 0
0.196 * [backup-simplify]: Simplify 1 into 1
0.196 * [backup-simplify]: Simplify (exp 0) into 1
0.197 * [backup-simplify]: Simplify (+ 1 1) into 2
0.197 * [backup-simplify]: Simplify (log 2) into (log 2)
0.197 * [taylor]: Taking taylor expansion of (log1p (exp x)) in x
0.197 * [taylor]: Rewrote expression to (log (+ 1 (exp x)))
0.197 * [taylor]: Taking taylor expansion of (+ 1 (exp x)) in x
0.197 * [taylor]: Taking taylor expansion of 1 in x
0.197 * [backup-simplify]: Simplify 1 into 1
0.197 * [taylor]: Taking taylor expansion of (exp x) in x
0.197 * [taylor]: Taking taylor expansion of x in x
0.197 * [backup-simplify]: Simplify 0 into 0
0.197 * [backup-simplify]: Simplify 1 into 1
0.197 * [backup-simplify]: Simplify (exp 0) into 1
0.198 * [backup-simplify]: Simplify (+ 1 1) into 2
0.198 * [backup-simplify]: Simplify (log 2) into (log 2)
0.198 * [backup-simplify]: Simplify (log 2) into (log 2)
0.199 * [backup-simplify]: Simplify (* (exp 0) (+ (* (/ (pow 1 1) 1)))) into 1
0.200 * [backup-simplify]: Simplify (+ 0 1) into 1
0.201 * [backup-simplify]: Simplify (/ (+ (* 1 (/ (* (pow (* 1 1) 1)) (pow 2 1)))) 1) into 1/2
0.201 * [backup-simplify]: Simplify 1/2 into 1/2
0.202 * [backup-simplify]: Simplify (* (exp 0) (+ (* (/ (pow 1 2) 2)) (* (/ (pow 0 1) 1)))) into 1/2
0.203 * [backup-simplify]: Simplify (+ 0 1/2) into 1/2
0.205 * [backup-simplify]: Simplify (/ (+ (* -1 (/ (* (pow (* 1 1) 2)) (pow 2 2))) (* 1 (/ (* 1 (pow (* 2 1/2) 1)) (pow 2 1)))) 2) into 1/8
0.205 * [backup-simplify]: Simplify 1/8 into 1/8
0.206 * [backup-simplify]: Simplify (+ (* 1/8 (pow x 2)) (+ (* 1/2 x) (log 2))) into (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
0.206 * [backup-simplify]: Simplify (log1p (exp (/ 1 x))) into (log1p (exp (/ 1 x)))
0.206 * [approximate]: Taking taylor expansion of (log1p (exp (/ 1 x))) in (x) around 0
0.206 * [taylor]: Taking taylor expansion of (log1p (exp (/ 1 x))) in x
0.206 * [taylor]: Rewrote expression to (log (+ 1 (exp (/ 1 x))))
0.206 * [taylor]: Taking taylor expansion of (+ 1 (exp (/ 1 x))) in x
0.206 * [taylor]: Taking taylor expansion of 1 in x
0.206 * [backup-simplify]: Simplify 1 into 1
0.206 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
0.206 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.206 * [taylor]: Taking taylor expansion of x in x
0.206 * [backup-simplify]: Simplify 0 into 0
0.206 * [backup-simplify]: Simplify 1 into 1
0.207 * [backup-simplify]: Simplify (/ 1 1) into 1
0.207 * [backup-simplify]: Simplify (exp (/ 1 x)) into (exp (/ 1 x))
0.207 * [backup-simplify]: Simplify (+ 1 (exp (/ 1 x))) into (+ (exp (/ 1 x)) 1)
0.207 * [backup-simplify]: Simplify (log (+ (exp (/ 1 x)) 1)) into (log (+ (exp (/ 1 x)) 1))
0.207 * [taylor]: Taking taylor expansion of (log1p (exp (/ 1 x))) in x
0.207 * [taylor]: Rewrote expression to (log (+ 1 (exp (/ 1 x))))
0.207 * [taylor]: Taking taylor expansion of (+ 1 (exp (/ 1 x))) in x
0.207 * [taylor]: Taking taylor expansion of 1 in x
0.207 * [backup-simplify]: Simplify 1 into 1
0.207 * [taylor]: Taking taylor expansion of (exp (/ 1 x)) in x
0.207 * [taylor]: Taking taylor expansion of (/ 1 x) in x
0.207 * [taylor]: Taking taylor expansion of x in x
0.207 * [backup-simplify]: Simplify 0 into 0
0.207 * [backup-simplify]: Simplify 1 into 1
0.208 * [backup-simplify]: Simplify (/ 1 1) into 1
0.208 * [backup-simplify]: Simplify (exp (/ 1 x)) into (exp (/ 1 x))
0.208 * [backup-simplify]: Simplify (+ 1 (exp (/ 1 x))) into (+ (exp (/ 1 x)) 1)
0.208 * [backup-simplify]: Simplify (log (+ (exp (/ 1 x)) 1)) into (log (+ (exp (/ 1 x)) 1))
0.208 * [backup-simplify]: Simplify (log (+ (exp (/ 1 x)) 1)) into (log (+ (exp (/ 1 x)) 1))
0.209 * [backup-simplify]: Simplify (+ 0 0) into 0
0.209 * [backup-simplify]: Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow (+ (exp (/ 1 x)) 1) 1)))) 1) into 0
0.209 * [backup-simplify]: Simplify 0 into 0
0.210 * [backup-simplify]: Simplify (+ 0 0) into 0
0.211 * [backup-simplify]: Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow (+ (exp (/ 1 x)) 1) 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow (+ (exp (/ 1 x)) 1) 1)))) 2) into 0
0.211 * [backup-simplify]: Simplify 0 into 0
0.212 * [backup-simplify]: Simplify (+ 0 0) into 0
0.228 * [backup-simplify]: Simplify (/ (+ (* 2 (/ (* (pow (* 1 0) 3)) (pow (+ (exp (/ 1 x)) 1) 3))) (* -3 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1)) (pow (+ (exp (/ 1 x)) 1) 2))) (* 1 (/ (* 1 1 (pow (* 6 0) 1)) (pow (+ (exp (/ 1 x)) 1) 1)))) 6) into 0
0.228 * [backup-simplify]: Simplify 0 into 0
0.228 * [backup-simplify]: Simplify (+ 0 0) into 0
0.234 * [backup-simplify]: Simplify (/ (+ (* -6 (/ (* (pow (* 1 0) 4)) (pow (+ (exp (/ 1 x)) 1) 4))) (* 12 (/ (* (pow (* 1 0) 2) (pow (* 2 0) 1)) (pow (+ (exp (/ 1 x)) 1) 3))) (* -3 (/ (* 1 (pow (* 2 0) 2)) (pow (+ (exp (/ 1 x)) 1) 2))) (* -4 (/ (* (pow (* 1 0) 1) 1 (pow (* 6 0) 1)) (pow (+ (exp (/ 1 x)) 1) 2))) (* 1 (/ (* 1 1 1 (pow (* 24 0) 1)) (pow (+ (exp (/ 1 x)) 1) 1)))) 24) into 0
0.234 * [backup-simplify]: Simplify 0 into 0
0.234 * [backup-simplify]: Simplify (+ 0 0) into 0
0.241 * [backup-simplify]: Simplify (/ (+ (* 24 (/ (* (pow (* 1 0) 5)) (pow (+ (exp (/ 1 x)) 1) 5))) (* -60 (/ (* (pow (* 1 0) 3) (pow (* 2 0) 1)) (pow (+ (exp (/ 1 x)) 1) 4))) (* 30 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 2)) (pow (+ (exp (/ 1 x)) 1) 3))) (* 20 (/ (* (pow (* 1 0) 2) 1 (pow (* 6 0) 1)) (pow (+ (exp (/ 1 x)) 1) 3))) (* -10 (/ (* 1 (pow (* 2 0) 1) (pow (* 6 0) 1)) (pow (+ (exp (/ 1 x)) 1) 2))) (* -5 (/ (* (pow (* 1 0) 1) 1 1 (pow (* 24 0) 1)) (pow (+ (exp (/ 1 x)) 1) 2))) (* 1 (/ (* 1 1 1 1 (pow (* 120 0) 1)) (pow (+ (exp (/ 1 x)) 1) 1)))) 120) into 0
0.241 * [backup-simplify]: Simplify 0 into 0
0.241 * [backup-simplify]: Simplify (+ 0 0) into 0
0.252 * [backup-simplify]: Simplify (/ (+ (* -120 (/ (* (pow (* 1 0) 6)) (pow (+ (exp (/ 1 x)) 1) 6))) (* 360 (/ (* (pow (* 1 0) 4) (pow (* 2 0) 1)) (pow (+ (exp (/ 1 x)) 1) 5))) (* -270 (/ (* (pow (* 1 0) 2) (pow (* 2 0) 2)) (pow (+ (exp (/ 1 x)) 1) 4))) (* -120 (/ (* (pow (* 1 0) 3) 1 (pow (* 6 0) 1)) (pow (+ (exp (/ 1 x)) 1) 4))) (* 30 (/ (* 1 (pow (* 2 0) 3)) (pow (+ (exp (/ 1 x)) 1) 3))) (* 120 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1) (pow (* 6 0) 1)) (pow (+ (exp (/ 1 x)) 1) 3))) (* 30 (/ (* (pow (* 1 0) 2) 1 1 (pow (* 24 0) 1)) (pow (+ (exp (/ 1 x)) 1) 3))) (* -10 (/ (* 1 1 (pow (* 6 0) 2)) (pow (+ (exp (/ 1 x)) 1) 2))) (* -15 (/ (* 1 (pow (* 2 0) 1) 1 (pow (* 24 0) 1)) (pow (+ (exp (/ 1 x)) 1) 2))) (* -6 (/ (* (pow (* 1 0) 1) 1 1 1 (pow (* 120 0) 1)) (pow (+ (exp (/ 1 x)) 1) 2))) (* 1 (/ (* 1 1 1 1 1 (pow (* 720 0) 1)) (pow (+ (exp (/ 1 x)) 1) 1)))) 720) into 0
0.252 * [backup-simplify]: Simplify 0 into 0
0.252 * [backup-simplify]: Simplify (log (+ (exp (/ 1 (/ 1 x))) 1)) into (log (+ (exp x) 1))
0.252 * [backup-simplify]: Simplify (log1p (exp (/ 1 (- x)))) into (log1p (exp (/ -1 x)))
0.252 * [approximate]: Taking taylor expansion of (log1p (exp (/ -1 x))) in (x) around 0
0.252 * [taylor]: Taking taylor expansion of (log1p (exp (/ -1 x))) in x
0.253 * [taylor]: Rewrote expression to (log (+ 1 (exp (/ -1 x))))
0.253 * [taylor]: Taking taylor expansion of (+ 1 (exp (/ -1 x))) in x
0.253 * [taylor]: Taking taylor expansion of 1 in x
0.253 * [backup-simplify]: Simplify 1 into 1
0.253 * [taylor]: Taking taylor expansion of (exp (/ -1 x)) in x
0.253 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.253 * [taylor]: Taking taylor expansion of -1 in x
0.253 * [backup-simplify]: Simplify -1 into -1
0.253 * [taylor]: Taking taylor expansion of x in x
0.253 * [backup-simplify]: Simplify 0 into 0
0.253 * [backup-simplify]: Simplify 1 into 1
0.253 * [backup-simplify]: Simplify (/ -1 1) into -1
0.253 * [backup-simplify]: Simplify (exp (/ -1 x)) into (exp (/ -1 x))
0.253 * [backup-simplify]: Simplify (+ 1 (exp (/ -1 x))) into (+ (exp (/ -1 x)) 1)
0.253 * [backup-simplify]: Simplify (log (+ (exp (/ -1 x)) 1)) into (log (+ (exp (/ -1 x)) 1))
0.253 * [taylor]: Taking taylor expansion of (log1p (exp (/ -1 x))) in x
0.254 * [taylor]: Rewrote expression to (log (+ 1 (exp (/ -1 x))))
0.254 * [taylor]: Taking taylor expansion of (+ 1 (exp (/ -1 x))) in x
0.254 * [taylor]: Taking taylor expansion of 1 in x
0.254 * [backup-simplify]: Simplify 1 into 1
0.254 * [taylor]: Taking taylor expansion of (exp (/ -1 x)) in x
0.254 * [taylor]: Taking taylor expansion of (/ -1 x) in x
0.254 * [taylor]: Taking taylor expansion of -1 in x
0.254 * [backup-simplify]: Simplify -1 into -1
0.254 * [taylor]: Taking taylor expansion of x in x
0.254 * [backup-simplify]: Simplify 0 into 0
0.254 * [backup-simplify]: Simplify 1 into 1
0.254 * [backup-simplify]: Simplify (/ -1 1) into -1
0.254 * [backup-simplify]: Simplify (exp (/ -1 x)) into (exp (/ -1 x))
0.254 * [backup-simplify]: Simplify (+ 1 (exp (/ -1 x))) into (+ (exp (/ -1 x)) 1)
0.254 * [backup-simplify]: Simplify (log (+ (exp (/ -1 x)) 1)) into (log (+ (exp (/ -1 x)) 1))
0.255 * [backup-simplify]: Simplify (log (+ (exp (/ -1 x)) 1)) into (log (+ (exp (/ -1 x)) 1))
0.255 * [backup-simplify]: Simplify (+ 0 0) into 0
0.256 * [backup-simplify]: Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow (+ (exp (/ -1 x)) 1) 1)))) 1) into 0
0.256 * [backup-simplify]: Simplify 0 into 0
0.256 * [backup-simplify]: Simplify (+ 0 0) into 0
0.257 * [backup-simplify]: Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow (+ (exp (/ -1 x)) 1) 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow (+ (exp (/ -1 x)) 1) 1)))) 2) into 0
0.257 * [backup-simplify]: Simplify 0 into 0
0.258 * [backup-simplify]: Simplify (+ 0 0) into 0
0.259 * [backup-simplify]: Simplify (/ (+ (* 2 (/ (* (pow (* 1 0) 3)) (pow (+ (exp (/ -1 x)) 1) 3))) (* -3 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1)) (pow (+ (exp (/ -1 x)) 1) 2))) (* 1 (/ (* 1 1 (pow (* 6 0) 1)) (pow (+ (exp (/ -1 x)) 1) 1)))) 6) into 0
0.259 * [backup-simplify]: Simplify 0 into 0
0.259 * [backup-simplify]: Simplify (+ 0 0) into 0
0.262 * [backup-simplify]: Simplify (/ (+ (* -6 (/ (* (pow (* 1 0) 4)) (pow (+ (exp (/ -1 x)) 1) 4))) (* 12 (/ (* (pow (* 1 0) 2) (pow (* 2 0) 1)) (pow (+ (exp (/ -1 x)) 1) 3))) (* -3 (/ (* 1 (pow (* 2 0) 2)) (pow (+ (exp (/ -1 x)) 1) 2))) (* -4 (/ (* (pow (* 1 0) 1) 1 (pow (* 6 0) 1)) (pow (+ (exp (/ -1 x)) 1) 2))) (* 1 (/ (* 1 1 1 (pow (* 24 0) 1)) (pow (+ (exp (/ -1 x)) 1) 1)))) 24) into 0
0.262 * [backup-simplify]: Simplify 0 into 0
0.263 * [backup-simplify]: Simplify (+ 0 0) into 0
0.267 * [backup-simplify]: Simplify (/ (+ (* 24 (/ (* (pow (* 1 0) 5)) (pow (+ (exp (/ -1 x)) 1) 5))) (* -60 (/ (* (pow (* 1 0) 3) (pow (* 2 0) 1)) (pow (+ (exp (/ -1 x)) 1) 4))) (* 30 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 2)) (pow (+ (exp (/ -1 x)) 1) 3))) (* 20 (/ (* (pow (* 1 0) 2) 1 (pow (* 6 0) 1)) (pow (+ (exp (/ -1 x)) 1) 3))) (* -10 (/ (* 1 (pow (* 2 0) 1) (pow (* 6 0) 1)) (pow (+ (exp (/ -1 x)) 1) 2))) (* -5 (/ (* (pow (* 1 0) 1) 1 1 (pow (* 24 0) 1)) (pow (+ (exp (/ -1 x)) 1) 2))) (* 1 (/ (* 1 1 1 1 (pow (* 120 0) 1)) (pow (+ (exp (/ -1 x)) 1) 1)))) 120) into 0
0.267 * [backup-simplify]: Simplify 0 into 0
0.267 * [backup-simplify]: Simplify (+ 0 0) into 0
0.274 * [backup-simplify]: Simplify (/ (+ (* -120 (/ (* (pow (* 1 0) 6)) (pow (+ (exp (/ -1 x)) 1) 6))) (* 360 (/ (* (pow (* 1 0) 4) (pow (* 2 0) 1)) (pow (+ (exp (/ -1 x)) 1) 5))) (* -270 (/ (* (pow (* 1 0) 2) (pow (* 2 0) 2)) (pow (+ (exp (/ -1 x)) 1) 4))) (* -120 (/ (* (pow (* 1 0) 3) 1 (pow (* 6 0) 1)) (pow (+ (exp (/ -1 x)) 1) 4))) (* 30 (/ (* 1 (pow (* 2 0) 3)) (pow (+ (exp (/ -1 x)) 1) 3))) (* 120 (/ (* (pow (* 1 0) 1) (pow (* 2 0) 1) (pow (* 6 0) 1)) (pow (+ (exp (/ -1 x)) 1) 3))) (* 30 (/ (* (pow (* 1 0) 2) 1 1 (pow (* 24 0) 1)) (pow (+ (exp (/ -1 x)) 1) 3))) (* -10 (/ (* 1 1 (pow (* 6 0) 2)) (pow (+ (exp (/ -1 x)) 1) 2))) (* -15 (/ (* 1 (pow (* 2 0) 1) 1 (pow (* 24 0) 1)) (pow (+ (exp (/ -1 x)) 1) 2))) (* -6 (/ (* (pow (* 1 0) 1) 1 1 1 (pow (* 120 0) 1)) (pow (+ (exp (/ -1 x)) 1) 2))) (* 1 (/ (* 1 1 1 1 1 (pow (* 720 0) 1)) (pow (+ (exp (/ -1 x)) 1) 1)))) 720) into 0
0.274 * [backup-simplify]: Simplify 0 into 0
0.274 * [backup-simplify]: Simplify (log (+ (exp (/ -1 (/ 1 (- x)))) 1)) into (log (+ (exp x) 1))
0.274 * * * [progress]: simplifying candidates
0.274 * * * * [progress]: [ 1 / 15 ] simplifiying candidate #<alt (λ (x y) (- (log (+ 1 (exp x))) (* y x)))>
0.274 * * * * [progress]: [ 2 / 15 ] simplifiying candidate #<alt (λ (x y) (- (log1p (expm1 (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 3 / 15 ] simplifiying candidate #<alt (λ (x y) (- (expm1 (log1p (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 4 / 15 ] simplifiying candidate #<alt (λ (x y) (- (log1p (exp x)) (* y x)))>
0.275 * * * * [progress]: [ 5 / 15 ] simplifiying candidate #<alt (λ (x y) (- (pow (log1p (exp x)) 1) (* y x)))>
0.275 * * * * [progress]: [ 6 / 15 ] simplifiying candidate #<alt (λ (x y) (- (exp (log (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 7 / 15 ] simplifiying candidate #<alt (λ (x y) (- (log (exp (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 8 / 15 ] simplifiying candidate #<alt (λ (x y) (- (* (* (cbrt (log1p (exp x))) (cbrt (log1p (exp x)))) (cbrt (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 9 / 15 ] simplifiying candidate #<alt (λ (x y) (- (cbrt (* (* (log1p (exp x)) (log1p (exp x))) (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 10 / 15 ] simplifiying candidate #<alt (λ (x y) (- (* (sqrt (log1p (exp x))) (sqrt (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 11 / 15 ] simplifiying candidate #<alt (λ (x y) (- (* 1 (log1p (exp x))) (* y x)))>
0.275 * * * * [progress]: [ 12 / 15 ] simplifiying candidate #<alt (λ (x y) (- (posit16->real (real->posit16 (log1p (exp x)))) (* y x)))>
0.275 * * * * [progress]: [ 13 / 15 ] simplifiying candidate #<alt (λ (x y) (- (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2)))) (* y x)))>
0.275 * * * * [progress]: [ 14 / 15 ] simplifiying candidate #<alt (λ (x y) (- (log (+ (exp x) 1)) (* y x)))>
0.275 * * * * [progress]: [ 15 / 15 ] simplifiying candidate #<alt (λ (x y) (- (log (+ (exp x) 1)) (* y x)))>
0.275 * [simplify]: Simplifying:
  (+ 1 (exp x))
  (expm1 (log1p (exp x)))
  (log1p (log1p (exp x)))
  (log (log1p (exp x)))
  (exp (log1p (exp x)))
  (* (cbrt (log1p (exp x))) (cbrt (log1p (exp x))))
  (cbrt (log1p (exp x)))
  (* (* (log1p (exp x)) (log1p (exp x))) (log1p (exp x)))
  (sqrt (log1p (exp x)))
  (sqrt (log1p (exp x)))
  (real->posit16 (log1p (exp x)))
  (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
  (log (+ (exp x) 1))
  (log (+ (exp x) 1))
0.275 * * [simplify]: iteration 1: (26 enodes)
0.282 * * [simplify]: iteration 2: (89 enodes)
0.297 * * [simplify]: iteration 3: (112 enodes)
0.330 * * [simplify]: iteration 4: (154 enodes)
0.373 * * [simplify]: iteration 5: (190 enodes)
0.407 * * [simplify]: iteration 6: (222 enodes)
0.444 * * [simplify]: iteration 7: (264 enodes)
0.510 * * [simplify]: iteration 8: (362 enodes)
0.628 * * [simplify]: iteration 9: (648 enodes)
0.985 * * [simplify]: iteration 10: (1635 enodes)
5.607 * * [simplify]: Extracting #0: cost 12 inf + 0
5.608 * * [simplify]: Extracting #1: cost 193 inf + 0
5.615 * * [simplify]: Extracting #2: cost 1101 inf + 302
5.626 * * [simplify]: Extracting #3: cost 1096 inf + 2730
5.658 * * [simplify]: Extracting #4: cost 893 inf + 152456
5.761 * * [simplify]: Extracting #5: cost 167 inf + 898043
5.933 * * [simplify]: Extracting #6: cost 2 inf + 1062055
6.086 * * [simplify]: Extracting #7: cost 0 inf + 1057476
6.250 * * [simplify]: Extracting #8: cost 0 inf + 1055750
6.379 * * [simplify]: Extracting #9: cost 0 inf + 1055437
6.519 * [simplify]: Simplified to:
  (+ (exp x) 1)
  (exp x)
  (log1p (log1p (exp x)))
  (log (log1p (exp x)))
  (+ (exp x) 1)
  (* (cbrt (log1p (exp x))) (cbrt (log1p (exp x))))
  (cbrt (log1p (exp x)))
  (* (log1p (exp x)) (* (log1p (exp x)) (log1p (exp x))))
  (sqrt (log1p (exp x)))
  (sqrt (log1p (exp x)))
  (real->posit16 (log1p (exp x)))
  (fma (fma 1/8 x 1/2) x (log 2))
  (log1p (exp x))
  (log1p (exp x))
6.520 * * * [progress]: adding candidates to table
6.631 * * [progress]: iteration 2 / 4
6.631 * * * [progress]: picking best candidate
6.634 * * * * [pick]: Picked  #<alt (λ (x y) (- (fma (fma 1/8 x 1/2) x (log 2)) (* y x)))>
6.634 * * * [progress]: localizing error
6.659 * * * [progress]: generating rewritten candidates
6.659 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1)
6.659 * * * [progress]: generating series expansions
6.659 * * * * [progress]: [ 1 / 1 ] generating series at (2 1)
6.660 * [backup-simplify]: Simplify (fma (fma 1/8 x 1/2) x (log 2)) into (fma (fma 1/8 x 1/2) x (log 2))
6.660 * [approximate]: Taking taylor expansion of (fma (fma 1/8 x 1/2) x (log 2)) in (x) around 0
6.660 * [taylor]: Taking taylor expansion of (fma (fma 1/8 x 1/2) x (log 2)) in x
6.660 * [taylor]: Rewrote expression to (+ (* (fma 1/8 x 1/2) x) (log 2))
6.660 * [taylor]: Taking taylor expansion of (* (fma 1/8 x 1/2) x) in x
6.661 * [taylor]: Taking taylor expansion of (fma 1/8 x 1/2) in x
6.661 * [taylor]: Rewrote expression to (+ (* 1/8 x) 1/2)
6.661 * [taylor]: Taking taylor expansion of (* 1/8 x) in x
6.661 * [taylor]: Taking taylor expansion of 1/8 in x
6.661 * [backup-simplify]: Simplify 1/8 into 1/8
6.661 * [taylor]: Taking taylor expansion of x in x
6.661 * [backup-simplify]: Simplify 0 into 0
6.661 * [backup-simplify]: Simplify 1 into 1
6.661 * [taylor]: Taking taylor expansion of 1/2 in x
6.661 * [backup-simplify]: Simplify 1/2 into 1/2
6.661 * [taylor]: Taking taylor expansion of x in x
6.661 * [backup-simplify]: Simplify 0 into 0
6.661 * [backup-simplify]: Simplify 1 into 1
6.661 * [taylor]: Taking taylor expansion of (log 2) in x
6.661 * [taylor]: Taking taylor expansion of 2 in x
6.661 * [backup-simplify]: Simplify 2 into 2
6.662 * [backup-simplify]: Simplify (log 2) into (log 2)
6.662 * [taylor]: Taking taylor expansion of (fma (fma 1/8 x 1/2) x (log 2)) in x
6.662 * [taylor]: Rewrote expression to (+ (* (fma 1/8 x 1/2) x) (log 2))
6.662 * [taylor]: Taking taylor expansion of (* (fma 1/8 x 1/2) x) in x
6.662 * [taylor]: Taking taylor expansion of (fma 1/8 x 1/2) in x
6.662 * [taylor]: Rewrote expression to (+ (* 1/8 x) 1/2)
6.662 * [taylor]: Taking taylor expansion of (* 1/8 x) in x
6.662 * [taylor]: Taking taylor expansion of 1/8 in x
6.662 * [backup-simplify]: Simplify 1/8 into 1/8
6.662 * [taylor]: Taking taylor expansion of x in x
6.662 * [backup-simplify]: Simplify 0 into 0
6.662 * [backup-simplify]: Simplify 1 into 1
6.662 * [taylor]: Taking taylor expansion of 1/2 in x
6.662 * [backup-simplify]: Simplify 1/2 into 1/2
6.662 * [taylor]: Taking taylor expansion of x in x
6.662 * [backup-simplify]: Simplify 0 into 0
6.662 * [backup-simplify]: Simplify 1 into 1
6.662 * [taylor]: Taking taylor expansion of (log 2) in x
6.662 * [taylor]: Taking taylor expansion of 2 in x
6.662 * [backup-simplify]: Simplify 2 into 2
6.663 * [backup-simplify]: Simplify (log 2) into (log 2)
6.663 * [backup-simplify]: Simplify (* 1/8 0) into 0
6.664 * [backup-simplify]: Simplify (+ 0 1/2) into 1/2
6.664 * [backup-simplify]: Simplify (* 1/2 0) into 0
6.665 * [backup-simplify]: Simplify (+ 0 (log 2)) into (log 2)
6.665 * [backup-simplify]: Simplify (log 2) into (log 2)
6.666 * [backup-simplify]: Simplify (+ (* 1/8 1) (* 0 0)) into 1/8
6.667 * [backup-simplify]: Simplify (+ 1/8 0) into 1/8
6.668 * [backup-simplify]: Simplify (+ (* 1/2 1) (* 1/8 0)) into 1/2
6.670 * [backup-simplify]: Simplify (/ (+ (* 1 (/ (* (pow (* 1 0) 1)) (pow 2 1)))) 1) into 0
6.671 * [backup-simplify]: Simplify (+ 1/2 0) into 1/2
6.671 * [backup-simplify]: Simplify 1/2 into 1/2
6.672 * [backup-simplify]: Simplify (+ (* 1/8 0) (+ (* 0 1) (* 0 0))) into 0
6.672 * [backup-simplify]: Simplify (+ 0 0) into 0
6.673 * [backup-simplify]: Simplify (+ (* 1/2 0) (+ (* 1/8 1) (* 0 0))) into 1/8
6.676 * [backup-simplify]: Simplify (/ (+ (* -1 (/ (* (pow (* 1 0) 2)) (pow 2 2))) (* 1 (/ (* 1 (pow (* 2 0) 1)) (pow 2 1)))) 2) into 0
6.676 * [backup-simplify]: Simplify (+ 1/8 0) into 1/8
6.676 * [backup-simplify]: Simplify 1/8 into 1/8
6.677 * [backup-simplify]: Simplify (+ (* 1/8 (pow x 2)) (+ (* 1/2 x) (log 2))) into (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
6.677 * [backup-simplify]: Simplify (fma (fma 1/8 (/ 1 x) 1/2) (/ 1 x) (log 2)) into (fma (fma 1/8 (/ 1 x) 1/2) (/ 1 x) (log 2))
6.677 * [approximate]: Taking taylor expansion of (fma (fma 1/8 (/ 1 x) 1/2) (/ 1 x) (log 2)) in (x) around 0
6.677 * [taylor]: Taking taylor expansion of (fma (fma 1/8 (/ 1 x) 1/2) (/ 1 x) (log 2)) in x
6.678 * [taylor]: Rewrote expression to (+ (* (fma 1/8 (/ 1 x) 1/2) (/ 1 x)) (log 2))
6.678 * [taylor]: Taking taylor expansion of (* (fma 1/8 (/ 1 x) 1/2) (/ 1 x)) in x
6.678 * [taylor]: Taking taylor expansion of (fma 1/8 (/ 1 x) 1/2) in x
6.678 * [taylor]: Rewrote expression to (+ (* 1/8 (/ 1 x)) 1/2)
6.678 * [taylor]: Taking taylor expansion of (* 1/8 (/ 1 x)) in x
6.678 * [taylor]: Taking taylor expansion of 1/8 in x
6.678 * [backup-simplify]: Simplify 1/8 into 1/8
6.678 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.678 * [taylor]: Taking taylor expansion of x in x
6.678 * [backup-simplify]: Simplify 0 into 0
6.678 * [backup-simplify]: Simplify 1 into 1
6.678 * [backup-simplify]: Simplify (/ 1 1) into 1
6.678 * [taylor]: Taking taylor expansion of 1/2 in x
6.678 * [backup-simplify]: Simplify 1/2 into 1/2
6.678 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.678 * [taylor]: Taking taylor expansion of x in x
6.678 * [backup-simplify]: Simplify 0 into 0
6.678 * [backup-simplify]: Simplify 1 into 1
6.679 * [backup-simplify]: Simplify (/ 1 1) into 1
6.679 * [taylor]: Taking taylor expansion of (log 2) in x
6.679 * [taylor]: Taking taylor expansion of 2 in x
6.679 * [backup-simplify]: Simplify 2 into 2
6.679 * [backup-simplify]: Simplify (log 2) into (log 2)
6.679 * [taylor]: Taking taylor expansion of (fma (fma 1/8 (/ 1 x) 1/2) (/ 1 x) (log 2)) in x
6.679 * [taylor]: Rewrote expression to (+ (* (fma 1/8 (/ 1 x) 1/2) (/ 1 x)) (log 2))
6.679 * [taylor]: Taking taylor expansion of (* (fma 1/8 (/ 1 x) 1/2) (/ 1 x)) in x
6.679 * [taylor]: Taking taylor expansion of (fma 1/8 (/ 1 x) 1/2) in x
6.679 * [taylor]: Rewrote expression to (+ (* 1/8 (/ 1 x)) 1/2)
6.679 * [taylor]: Taking taylor expansion of (* 1/8 (/ 1 x)) in x
6.679 * [taylor]: Taking taylor expansion of 1/8 in x
6.679 * [backup-simplify]: Simplify 1/8 into 1/8
6.680 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.680 * [taylor]: Taking taylor expansion of x in x
6.680 * [backup-simplify]: Simplify 0 into 0
6.680 * [backup-simplify]: Simplify 1 into 1
6.680 * [backup-simplify]: Simplify (/ 1 1) into 1
6.680 * [taylor]: Taking taylor expansion of 1/2 in x
6.680 * [backup-simplify]: Simplify 1/2 into 1/2
6.680 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.680 * [taylor]: Taking taylor expansion of x in x
6.680 * [backup-simplify]: Simplify 0 into 0
6.680 * [backup-simplify]: Simplify 1 into 1
6.681 * [backup-simplify]: Simplify (/ 1 1) into 1
6.681 * [taylor]: Taking taylor expansion of (log 2) in x
6.681 * [taylor]: Taking taylor expansion of 2 in x
6.681 * [backup-simplify]: Simplify 2 into 2
6.681 * [backup-simplify]: Simplify (log 2) into (log 2)
6.682 * [backup-simplify]: Simplify (* 1/8 1) into 1/8
6.682 * [backup-simplify]: Simplify (+ 1/8 0) into 1/8
6.682 * [backup-simplify]: Simplify (* 1/8 1) into 1/8
6.683 * [backup-simplify]: Simplify (+ 1/8 0) into 1/8
6.683 * [backup-simplify]: Simplify 1/8 into 1/8
6.683 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.684 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.685 * [backup-simplify]: Simplify (+ (* 1/8 0) (* 0 1)) into 0
6.685 * [backup-simplify]: Simplify (+ 0 1/2) into 1/2
6.686 * [backup-simplify]: Simplify (+ (* 1/8 0) (* 1/2 1)) into 1/2
6.686 * [backup-simplify]: Simplify (+ 1/2 0) into 1/2
6.686 * [backup-simplify]: Simplify 1/2 into 1/2
6.687 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.688 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.689 * [backup-simplify]: Simplify (+ (* 1/8 0) (+ (* 0 0) (* 0 1))) into 0
6.690 * [backup-simplify]: Simplify (+ 0 0) into 0
6.691 * [backup-simplify]: Simplify (+ (* 1/8 0) (+ (* 1/2 0) (* 0 1))) into 0
6.691 * [backup-simplify]: Simplify (+ 0 (log 2)) into (log 2)
6.692 * [backup-simplify]: Simplify (log 2) into (log 2)
6.692 * [backup-simplify]: Simplify (+ (log 2) (+ (* 1/2 (/ 1 (/ 1 x))) (* 1/8 (pow (/ 1 (/ 1 x)) 2)))) into (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
6.693 * [backup-simplify]: Simplify (fma (fma 1/8 (/ 1 (- x)) 1/2) (/ 1 (- x)) (log 2)) into (fma (fma 1/8 (/ -1 x) 1/2) (/ -1 x) (log 2))
6.693 * [approximate]: Taking taylor expansion of (fma (fma 1/8 (/ -1 x) 1/2) (/ -1 x) (log 2)) in (x) around 0
6.693 * [taylor]: Taking taylor expansion of (fma (fma 1/8 (/ -1 x) 1/2) (/ -1 x) (log 2)) in x
6.693 * [taylor]: Rewrote expression to (+ (* (fma 1/8 (/ -1 x) 1/2) (/ -1 x)) (log 2))
6.693 * [taylor]: Taking taylor expansion of (* (fma 1/8 (/ -1 x) 1/2) (/ -1 x)) in x
6.693 * [taylor]: Taking taylor expansion of (fma 1/8 (/ -1 x) 1/2) in x
6.693 * [taylor]: Rewrote expression to (+ (* 1/8 (/ -1 x)) 1/2)
6.693 * [taylor]: Taking taylor expansion of (* 1/8 (/ -1 x)) in x
6.693 * [taylor]: Taking taylor expansion of 1/8 in x
6.693 * [backup-simplify]: Simplify 1/8 into 1/8
6.693 * [taylor]: Taking taylor expansion of (/ -1 x) in x
6.693 * [taylor]: Taking taylor expansion of -1 in x
6.693 * [backup-simplify]: Simplify -1 into -1
6.693 * [taylor]: Taking taylor expansion of x in x
6.693 * [backup-simplify]: Simplify 0 into 0
6.693 * [backup-simplify]: Simplify 1 into 1
6.694 * [backup-simplify]: Simplify (/ -1 1) into -1
6.694 * [taylor]: Taking taylor expansion of 1/2 in x
6.694 * [backup-simplify]: Simplify 1/2 into 1/2
6.694 * [taylor]: Taking taylor expansion of (/ -1 x) in x
6.694 * [taylor]: Taking taylor expansion of -1 in x
6.694 * [backup-simplify]: Simplify -1 into -1
6.694 * [taylor]: Taking taylor expansion of x in x
6.694 * [backup-simplify]: Simplify 0 into 0
6.694 * [backup-simplify]: Simplify 1 into 1
6.694 * [backup-simplify]: Simplify (/ -1 1) into -1
6.694 * [taylor]: Taking taylor expansion of (log 2) in x
6.694 * [taylor]: Taking taylor expansion of 2 in x
6.694 * [backup-simplify]: Simplify 2 into 2
6.695 * [backup-simplify]: Simplify (log 2) into (log 2)
6.695 * [taylor]: Taking taylor expansion of (fma (fma 1/8 (/ -1 x) 1/2) (/ -1 x) (log 2)) in x
6.695 * [taylor]: Rewrote expression to (+ (* (fma 1/8 (/ -1 x) 1/2) (/ -1 x)) (log 2))
6.695 * [taylor]: Taking taylor expansion of (* (fma 1/8 (/ -1 x) 1/2) (/ -1 x)) in x
6.695 * [taylor]: Taking taylor expansion of (fma 1/8 (/ -1 x) 1/2) in x
6.695 * [taylor]: Rewrote expression to (+ (* 1/8 (/ -1 x)) 1/2)
6.695 * [taylor]: Taking taylor expansion of (* 1/8 (/ -1 x)) in x
6.695 * [taylor]: Taking taylor expansion of 1/8 in x
6.695 * [backup-simplify]: Simplify 1/8 into 1/8
6.695 * [taylor]: Taking taylor expansion of (/ -1 x) in x
6.695 * [taylor]: Taking taylor expansion of -1 in x
6.695 * [backup-simplify]: Simplify -1 into -1
6.695 * [taylor]: Taking taylor expansion of x in x
6.695 * [backup-simplify]: Simplify 0 into 0
6.695 * [backup-simplify]: Simplify 1 into 1
6.696 * [backup-simplify]: Simplify (/ -1 1) into -1
6.696 * [taylor]: Taking taylor expansion of 1/2 in x
6.696 * [backup-simplify]: Simplify 1/2 into 1/2
6.696 * [taylor]: Taking taylor expansion of (/ -1 x) in x
6.696 * [taylor]: Taking taylor expansion of -1 in x
6.696 * [backup-simplify]: Simplify -1 into -1
6.696 * [taylor]: Taking taylor expansion of x in x
6.696 * [backup-simplify]: Simplify 0 into 0
6.696 * [backup-simplify]: Simplify 1 into 1
6.696 * [backup-simplify]: Simplify (/ -1 1) into -1
6.696 * [taylor]: Taking taylor expansion of (log 2) in x
6.696 * [taylor]: Taking taylor expansion of 2 in x
6.696 * [backup-simplify]: Simplify 2 into 2
6.697 * [backup-simplify]: Simplify (log 2) into (log 2)
6.697 * [backup-simplify]: Simplify (* 1/8 -1) into -1/8
6.698 * [backup-simplify]: Simplify (+ -1/8 0) into -1/8
6.698 * [backup-simplify]: Simplify (* -1/8 -1) into 1/8
6.698 * [backup-simplify]: Simplify (+ 1/8 0) into 1/8
6.698 * [backup-simplify]: Simplify 1/8 into 1/8
6.699 * [backup-simplify]: Simplify (- (/ 0 1) (+ (* -1 (/ 0 1)))) into 0
6.700 * [backup-simplify]: Simplify (- (/ 0 1) (+ (* -1 (/ 0 1)))) into 0
6.701 * [backup-simplify]: Simplify (+ (* 1/8 0) (* 0 -1)) into 0
6.701 * [backup-simplify]: Simplify (+ 0 1/2) into 1/2
6.702 * [backup-simplify]: Simplify (+ (* -1/8 0) (* 1/2 -1)) into -1/2
6.703 * [backup-simplify]: Simplify (+ -1/2 0) into -1/2
6.703 * [backup-simplify]: Simplify -1/2 into -1/2
6.704 * [backup-simplify]: Simplify (- (/ 0 1) (+ (* -1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.705 * [backup-simplify]: Simplify (- (/ 0 1) (+ (* -1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.706 * [backup-simplify]: Simplify (+ (* 1/8 0) (+ (* 0 0) (* 0 -1))) into 0
6.706 * [backup-simplify]: Simplify (+ 0 0) into 0
6.707 * [backup-simplify]: Simplify (+ (* -1/8 0) (+ (* 1/2 0) (* 0 -1))) into 0
6.708 * [backup-simplify]: Simplify (+ 0 (log 2)) into (log 2)
6.709 * [backup-simplify]: Simplify (log 2) into (log 2)
6.709 * [backup-simplify]: Simplify (+ (log 2) (+ (* -1/2 (/ 1 (/ 1 (- x)))) (* 1/8 (pow (/ 1 (/ 1 (- x))) 2)))) into (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
6.709 * * * [progress]: simplifying candidates
6.709 * * * * [progress]: [ 1 / 14 ] simplifiying candidate #<alt (λ (x y) (- (log1p (expm1 (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.709 * * * * [progress]: [ 2 / 14 ] simplifiying candidate #<alt (λ (x y) (- (expm1 (log1p (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.709 * * * * [progress]: [ 3 / 14 ] simplifiying candidate #<alt (λ (x y) (- (+ (* (fma 1/8 x 1/2) x) (log 2)) (* y x)))>
6.710 * * * * [progress]: [ 4 / 14 ] simplifiying candidate #<alt (λ (x y) (- (pow (fma (fma 1/8 x 1/2) x (log 2)) 1) (* y x)))>
6.710 * * * * [progress]: [ 5 / 14 ] simplifiying candidate #<alt (λ (x y) (- (exp (log (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.710 * * * * [progress]: [ 6 / 14 ] simplifiying candidate #<alt (λ (x y) (- (log (exp (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.710 * * * * [progress]: [ 7 / 14 ] simplifiying candidate #<alt (λ (x y) (- (* (* (cbrt (fma (fma 1/8 x 1/2) x (log 2))) (cbrt (fma (fma 1/8 x 1/2) x (log 2)))) (cbrt (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.710 * * * * [progress]: [ 8 / 14 ] simplifiying candidate #<alt (λ (x y) (- (cbrt (* (* (fma (fma 1/8 x 1/2) x (log 2)) (fma (fma 1/8 x 1/2) x (log 2))) (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.710 * * * * [progress]: [ 9 / 14 ] simplifiying candidate #<alt (λ (x y) (- (* (sqrt (fma (fma 1/8 x 1/2) x (log 2))) (sqrt (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.710 * * * * [progress]: [ 10 / 14 ] simplifiying candidate #<alt (λ (x y) (- (* 1 (fma (fma 1/8 x 1/2) x (log 2))) (* y x)))>
6.710 * * * * [progress]: [ 11 / 14 ] simplifiying candidate #<alt (λ (x y) (- (posit16->real (real->posit16 (fma (fma 1/8 x 1/2) x (log 2)))) (* y x)))>
6.710 * * * * [progress]: [ 12 / 14 ] simplifiying candidate #<alt (λ (x y) (- (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2)))) (* y x)))>
6.710 * * * * [progress]: [ 13 / 14 ] simplifiying candidate #<alt (λ (x y) (- (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2)))) (* y x)))>
6.710 * * * * [progress]: [ 14 / 14 ] simplifiying candidate #<alt (λ (x y) (- (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2)))) (* y x)))>
6.711 * [simplify]: Simplifying:
  (expm1 (fma (fma 1/8 x 1/2) x (log 2)))
  (log1p (fma (fma 1/8 x 1/2) x (log 2)))
  (* (fma 1/8 x 1/2) x)
  (log (fma (fma 1/8 x 1/2) x (log 2)))
  (exp (fma (fma 1/8 x 1/2) x (log 2)))
  (* (cbrt (fma (fma 1/8 x 1/2) x (log 2))) (cbrt (fma (fma 1/8 x 1/2) x (log 2))))
  (cbrt (fma (fma 1/8 x 1/2) x (log 2)))
  (* (* (fma (fma 1/8 x 1/2) x (log 2)) (fma (fma 1/8 x 1/2) x (log 2))) (fma (fma 1/8 x 1/2) x (log 2)))
  (sqrt (fma (fma 1/8 x 1/2) x (log 2)))
  (sqrt (fma (fma 1/8 x 1/2) x (log 2)))
  (real->posit16 (fma (fma 1/8 x 1/2) x (log 2)))
  (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
  (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
  (+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
6.711 * * [simplify]: iteration 1: (23 enodes)
6.722 * * [simplify]: iteration 2: (83 enodes)
6.754 * * [simplify]: iteration 3: (129 enodes)
6.805 * * [simplify]: iteration 4: (380 enodes)
7.183 * * [simplify]: iteration 5: (1743 enodes)
12.198 * * [simplify]: Extracting #0: cost 11 inf + 0
12.199 * * [simplify]: Extracting #1: cost 180 inf + 0
12.206 * * [simplify]: Extracting #2: cost 1629 inf + 3520
12.298 * * [simplify]: Extracting #3: cost 1308 inf + 174439
12.516 * * [simplify]: Extracting #4: cost 80 inf + 609800
12.802 * * [simplify]: Extracting #5: cost 0 inf + 632449
13.048 * * [simplify]: Extracting #6: cost 0 inf + 632064
13.258 * [simplify]: Simplified to:
  (expm1 (fma (fma x 1/8 1/2) x (log 2)))
  (log1p (fma (fma x 1/8 1/2) x (log 2)))
  (* (fma x 1/8 1/2) x)
  (log (fma (fma x 1/8 1/2) x (log 2)))
  (* (exp (* (fma x 1/8 1/2) x)) 2)
  (* (cbrt (fma (fma x 1/8 1/2) x (log 2))) (cbrt (fma (fma x 1/8 1/2) x (log 2))))
  (cbrt (fma (fma x 1/8 1/2) x (log 2)))
  (* (* (fma (fma x 1/8 1/2) x (log 2)) (fma (fma x 1/8 1/2) x (log 2))) (fma (fma x 1/8 1/2) x (log 2)))
  (sqrt (fma (fma x 1/8 1/2) x (log 2)))
  (sqrt (fma (fma x 1/8 1/2) x (log 2)))
  (real->posit16 (fma (fma x 1/8 1/2) x (log 2)))
  (fma (fma x 1/8 1/2) x (log 2))
  (fma (fma x 1/8 1/2) x (log 2))
  (fma (fma x 1/8 1/2) x (log 2))
13.259 * * * [progress]: adding candidates to table
13.430 * [progress]: [Phase 3 of 3] Extracting.
13.430 * * [regime]: Finding splitpoints for: (#<alt (λ (x y) (- (log1p (exp x)) (* y x)))> #<alt (λ (x y) (- (fma (fma 1/8 x 1/2) x (log 2)) (* y x)))>)
13.430 * * * [regime-changes]: Trying 2 branch expressions: (y x)
13.430 * * * * [regimes]: Trying to branch on y from (#<alt (λ (x y) (- (log1p (exp x)) (* y x)))> #<alt (λ (x y) (- (fma (fma 1/8 x 1/2) x (log 2)) (* y x)))>)
13.450 * * * * [regimes]: Trying to branch on x from (#<alt (λ (x y) (- (log1p (exp x)) (* y x)))> #<alt (λ (x y) (- (fma (fma 1/8 x 1/2) x (log 2)) (* y x)))>)
13.472 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
13.473 * [simplify]: Simplifying:
  (- (log1p (exp x)) (* y x))
13.473 * * [simplify]: iteration 1: (6 enodes)
13.473 * * [simplify]: iteration 2: (7 enodes)
13.473 * * [simplify]: Extracting #0: cost 1 inf + 0
13.473 * * [simplify]: Extracting #1: cost 3 inf + 0
13.473 * * [simplify]: Extracting #2: cost 6 inf + 0
13.473 * * [simplify]: Extracting #3: cost 4 inf + 2
13.473 * * [simplify]: Extracting #4: cost 0 inf + 518
13.474 * [simplify]: Simplified to:
  (- (log1p (exp x)) (* y x))
18.086 * [regime-testing]: Baseline error score: 0.501096908662046
18.090 * [regime-testing]: Oracle error score: 0.17454119211065822
18.099 * [regime-testing]: End program error score: 0.501096908662046
18.203 * [regime-testing]: Target error score: 0.05601246736529494