2.954 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.033 * * * [progress]: [2/2] Setting up program.
0.036 * [progress]: [Phase 2 of 3] Improving.
0.037 * [simplify]: Simplifying:
  (- (+ (- (* d1 d2) (* d1 d3)) (* d4 d1)) (* d1 d1))
0.037 * * [simplify]: Extracting # 0 : cost  0
0.037 * * [simplify]: Extracting # 1 : cost  0
0.037 * * [simplify]: Extracting # 2 : cost  0
0.037 * * [simplify]: Extracting # 3 : cost  0
0.037 * * [simplify]: Extracting # 4 : cost  0
0.037 * * [simplify]: Extracting # 5 : cost  0
0.037 * * [simplify]: Extracting # 6 : cost  0
0.037 * * [simplify]: iteration  0 :  11  enodes  (cost  15 )
0.041 * * [simplify]: Extracting # 0 : cost  0
0.041 * * [simplify]: Extracting # 1 : cost  0
0.041 * * [simplify]: Extracting # 2 : cost  0
0.041 * * [simplify]: Extracting # 3 : cost  0
0.041 * * [simplify]: Extracting # 4 : cost  0
0.041 * * [simplify]: iteration  1 :  26  enodes  (cost  13 )
0.052 * * [simplify]: Extracting # 0 : cost  0
0.052 * * [simplify]: Extracting # 1 : cost  0
0.053 * * [simplify]: Extracting # 2 : cost  0
0.053 * * [simplify]: Extracting # 3 : cost  0
0.053 * * [simplify]: Extracting # 4 : cost  0
0.053 * * [simplify]: iteration  2 :  81  enodes  (cost  10 )
0.125 * * [simplify]: Extracting # 0 : cost  0
0.125 * * [simplify]: Extracting # 1 : cost  0
0.126 * * [simplify]: Extracting # 2 : cost  0
0.126 * * [simplify]: Extracting # 3 : cost  0
0.127 * * [simplify]: Extracting # 4 : cost  0
0.127 * * [simplify]: iteration  3 :  241  enodes  (cost  9 )
0.303 * * [simplify]: Extracting # 0 : cost  0
0.305 * * [simplify]: Extracting # 1 : cost  0
0.305 * * [simplify]: Extracting # 2 : cost  0
0.306 * * [simplify]: Extracting # 3 : cost  0
0.307 * * [simplify]: iteration  4 :  545  enodes  (cost  9 )
0.963 * * [simplify]: Extracting # 0 : cost  0
0.964 * * [simplify]: Extracting # 1 : cost  0
0.965 * * [simplify]: Extracting # 2 : cost  0
0.965 * * [simplify]: Extracting # 3 : cost  0
0.966 * * [simplify]: iteration  5 :  981  enodes  (cost  9 )
1.586 * * [simplify]: Extracting # 0 : cost  0
1.587 * * [simplify]: Extracting # 1 : cost  0
1.588 * * [simplify]: Extracting # 2 : cost  0
1.589 * * [simplify]: Extracting # 3 : cost  0
1.589 * * [simplify]: iteration  6 :  1357  enodes  (cost  9 )
2.662 * * [simplify]: Extracting # 0 : cost  0
2.664 * * [simplify]: Extracting # 1 : cost  0
2.665 * * [simplify]: Extracting # 2 : cost  0
2.666 * * [simplify]: iteration  7 :  1851  enodes  (cost  9 )
4.239 * * [simplify]: Extracting # 0 : cost  0
4.241 * * [simplify]: Extracting # 1 : cost  0
4.242 * * [simplify]: Extracting # 2 : cost  0
4.243 * * [simplify]: iteration  8 :  2247  enodes  (cost  9 )
5.479 * * [simplify]: Extracting # 0 : cost  0
5.480 * * [simplify]: Extracting # 1 : cost  0
5.481 * * [simplify]: iteration  9 :  2358  enodes  (cost  9 )
6.407 * * [simplify]: Extracting # 0 : cost  0
6.408 * * [simplify]: iteration done:  2358  enodes  (cost  9 )
6.408 * [simplify]: Simplified to:
  (* d1 (- (+ (- d2 d3) d4) d1))
6.410 * * [progress]: iteration 1 / 4
6.410 * * * [progress]: picking best candidate
6.413 * * * * [pick]: Picked  #<alt (λ (d1 d2 d3 d4) (* d1 (- (+ (- d2 d3) d4) d1)))>
6.413 * * * [progress]: localizing error
6.421 * * * [progress]: generating rewritten candidates
6.421 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
6.759 * * * [progress]: generating series expansions
6.759 * * * * [progress]: [ 1 / 1 ] generating series at (2)
6.759 * [backup-simplify]: Simplify (* d1 (- (+ (- d2 d3) d4) d1)) into (* d1 (- (+ d2 d4) (+ d3 d1)))
6.759 * [approximate]: Taking taylor expansion of (* d1 (- (+ d2 d4) (+ d3 d1))) in (d1 d2 d3 d4) around 0
6.759 * [taylor]: Taking taylor expansion of (* d1 (- (+ d2 d4) (+ d3 d1))) in d4
6.759 * [taylor]: Taking taylor expansion of d1 in d4
6.759 * [backup-simplify]: Simplify d1 into d1
6.759 * [taylor]: Taking taylor expansion of (- (+ d2 d4) (+ d3 d1)) in d4
6.759 * [taylor]: Taking taylor expansion of (+ d2 d4) in d4
6.759 * [taylor]: Taking taylor expansion of d2 in d4
6.759 * [backup-simplify]: Simplify d2 into d2
6.759 * [taylor]: Taking taylor expansion of d4 in d4
6.759 * [backup-simplify]: Simplify 0 into 0
6.759 * [backup-simplify]: Simplify 1 into 1
6.759 * [taylor]: Taking taylor expansion of (+ d3 d1) in d4
6.759 * [taylor]: Taking taylor expansion of d3 in d4
6.759 * [backup-simplify]: Simplify d3 into d3
6.759 * [taylor]: Taking taylor expansion of d1 in d4
6.759 * [backup-simplify]: Simplify d1 into d1
6.759 * [taylor]: Taking taylor expansion of (* d1 (- (+ d2 d4) (+ d3 d1))) in d3
6.759 * [taylor]: Taking taylor expansion of d1 in d3
6.759 * [backup-simplify]: Simplify d1 into d1
6.760 * [taylor]: Taking taylor expansion of (- (+ d2 d4) (+ d3 d1)) in d3
6.760 * [taylor]: Taking taylor expansion of (+ d2 d4) in d3
6.760 * [taylor]: Taking taylor expansion of d2 in d3
6.760 * [backup-simplify]: Simplify d2 into d2
6.760 * [taylor]: Taking taylor expansion of d4 in d3
6.760 * [backup-simplify]: Simplify d4 into d4
6.760 * [taylor]: Taking taylor expansion of (+ d3 d1) in d3
6.760 * [taylor]: Taking taylor expansion of d3 in d3
6.760 * [backup-simplify]: Simplify 0 into 0
6.760 * [backup-simplify]: Simplify 1 into 1
6.760 * [taylor]: Taking taylor expansion of d1 in d3
6.760 * [backup-simplify]: Simplify d1 into d1
6.760 * [taylor]: Taking taylor expansion of (* d1 (- (+ d2 d4) (+ d3 d1))) in d2
6.760 * [taylor]: Taking taylor expansion of d1 in d2
6.760 * [backup-simplify]: Simplify d1 into d1
6.760 * [taylor]: Taking taylor expansion of (- (+ d2 d4) (+ d3 d1)) in d2
6.760 * [taylor]: Taking taylor expansion of (+ d2 d4) in d2
6.760 * [taylor]: Taking taylor expansion of d2 in d2
6.760 * [backup-simplify]: Simplify 0 into 0
6.760 * [backup-simplify]: Simplify 1 into 1
6.760 * [taylor]: Taking taylor expansion of d4 in d2
6.760 * [backup-simplify]: Simplify d4 into d4
6.760 * [taylor]: Taking taylor expansion of (+ d3 d1) in d2
6.760 * [taylor]: Taking taylor expansion of d3 in d2
6.760 * [backup-simplify]: Simplify d3 into d3
6.760 * [taylor]: Taking taylor expansion of d1 in d2
6.760 * [backup-simplify]: Simplify d1 into d1
6.760 * [taylor]: Taking taylor expansion of (* d1 (- (+ d2 d4) (+ d3 d1))) in d1
6.760 * [taylor]: Taking taylor expansion of d1 in d1
6.760 * [backup-simplify]: Simplify 0 into 0
6.760 * [backup-simplify]: Simplify 1 into 1
6.760 * [taylor]: Taking taylor expansion of (- (+ d2 d4) (+ d3 d1)) in d1
6.760 * [taylor]: Taking taylor expansion of (+ d2 d4) in d1
6.760 * [taylor]: Taking taylor expansion of d2 in d1
6.760 * [backup-simplify]: Simplify d2 into d2
6.760 * [taylor]: Taking taylor expansion of d4 in d1
6.760 * [backup-simplify]: Simplify d4 into d4
6.760 * [taylor]: Taking taylor expansion of (+ d3 d1) in d1
6.760 * [taylor]: Taking taylor expansion of d3 in d1
6.760 * [backup-simplify]: Simplify d3 into d3
6.760 * [taylor]: Taking taylor expansion of d1 in d1
6.760 * [backup-simplify]: Simplify 0 into 0
6.760 * [backup-simplify]: Simplify 1 into 1
6.760 * [taylor]: Taking taylor expansion of (* d1 (- (+ d2 d4) (+ d3 d1))) in d1
6.760 * [taylor]: Taking taylor expansion of d1 in d1
6.760 * [backup-simplify]: Simplify 0 into 0
6.760 * [backup-simplify]: Simplify 1 into 1
6.760 * [taylor]: Taking taylor expansion of (- (+ d2 d4) (+ d3 d1)) in d1
6.760 * [taylor]: Taking taylor expansion of (+ d2 d4) in d1
6.760 * [taylor]: Taking taylor expansion of d2 in d1
6.760 * [backup-simplify]: Simplify d2 into d2
6.760 * [taylor]: Taking taylor expansion of d4 in d1
6.760 * [backup-simplify]: Simplify d4 into d4
6.760 * [taylor]: Taking taylor expansion of (+ d3 d1) in d1
6.760 * [taylor]: Taking taylor expansion of d3 in d1
6.760 * [backup-simplify]: Simplify d3 into d3
6.760 * [taylor]: Taking taylor expansion of d1 in d1
6.760 * [backup-simplify]: Simplify 0 into 0
6.760 * [backup-simplify]: Simplify 1 into 1
6.760 * [backup-simplify]: Simplify (+ d2 d4) into (+ d4 d2)
6.760 * [backup-simplify]: Simplify (+ d3 0) into d3
6.760 * [backup-simplify]: Simplify (- d3) into (- d3)
6.761 * [backup-simplify]: Simplify (+ (+ d4 d2) (- d3)) into (- (+ d4 d2) d3)
6.761 * [backup-simplify]: Simplify (* 0 (- (+ d4 d2) d3)) into 0
6.761 * [taylor]: Taking taylor expansion of 0 in d2
6.761 * [backup-simplify]: Simplify 0 into 0
6.761 * [taylor]: Taking taylor expansion of 0 in d3
6.761 * [backup-simplify]: Simplify 0 into 0
6.761 * [taylor]: Taking taylor expansion of 0 in d4
6.761 * [backup-simplify]: Simplify 0 into 0
6.761 * [backup-simplify]: Simplify 0 into 0
6.761 * [backup-simplify]: Simplify (+ 0 0) into 0
6.762 * [backup-simplify]: Simplify (+ 0 1) into 1
6.762 * [backup-simplify]: Simplify (- 1) into -1
6.762 * [backup-simplify]: Simplify (+ 0 -1) into -1
6.762 * [backup-simplify]: Simplify (+ (* 0 -1) (* 1 (- (+ d4 d2) d3))) into (- (+ d2 d4) d3)
6.762 * [taylor]: Taking taylor expansion of (- (+ d2 d4) d3) in d2
6.763 * [taylor]: Taking taylor expansion of (+ d2 d4) in d2
6.763 * [taylor]: Taking taylor expansion of d2 in d2
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [backup-simplify]: Simplify 1 into 1
6.763 * [taylor]: Taking taylor expansion of d4 in d2
6.763 * [backup-simplify]: Simplify d4 into d4
6.763 * [taylor]: Taking taylor expansion of d3 in d2
6.763 * [backup-simplify]: Simplify d3 into d3
6.763 * [backup-simplify]: Simplify (+ 0 d4) into d4
6.763 * [backup-simplify]: Simplify (- d3) into (- d3)
6.763 * [backup-simplify]: Simplify (+ d4 (- d3)) into (- d4 d3)
6.763 * [taylor]: Taking taylor expansion of (- d4 d3) in d3
6.763 * [taylor]: Taking taylor expansion of d4 in d3
6.763 * [backup-simplify]: Simplify d4 into d4
6.763 * [taylor]: Taking taylor expansion of d3 in d3
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [backup-simplify]: Simplify 1 into 1
6.763 * [backup-simplify]: Simplify (- 0) into 0
6.763 * [backup-simplify]: Simplify (+ d4 0) into d4
6.763 * [taylor]: Taking taylor expansion of d4 in d4
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [backup-simplify]: Simplify 1 into 1
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [taylor]: Taking taylor expansion of 0 in d3
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [taylor]: Taking taylor expansion of 0 in d4
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [taylor]: Taking taylor expansion of 0 in d4
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [backup-simplify]: Simplify 0 into 0
6.763 * [backup-simplify]: Simplify 0 into 0
6.764 * [backup-simplify]: Simplify (+ 0 0) into 0
6.764 * [backup-simplify]: Simplify (+ 0 0) into 0
6.764 * [backup-simplify]: Simplify (- 0) into 0
6.764 * [backup-simplify]: Simplify (+ 0 0) into 0
6.765 * [backup-simplify]: Simplify (+ (* 0 0) (+ (* 1 -1) (* 0 (- (+ d4 d2) d3)))) into (- 1)
6.765 * [taylor]: Taking taylor expansion of (- 1) in d2
6.765 * [taylor]: Taking taylor expansion of 1 in d2
6.765 * [backup-simplify]: Simplify 1 into 1
6.765 * [backup-simplify]: Simplify (- 1) into -1
6.765 * [taylor]: Taking taylor expansion of -1 in d3
6.765 * [backup-simplify]: Simplify -1 into -1
6.765 * [taylor]: Taking taylor expansion of -1 in d4
6.765 * [backup-simplify]: Simplify -1 into -1
6.765 * [backup-simplify]: Simplify -1 into -1
6.766 * [backup-simplify]: Simplify (+ 1 0) into 1
6.766 * [backup-simplify]: Simplify (- 0) into 0
6.766 * [backup-simplify]: Simplify (+ 1 0) into 1
6.766 * [taylor]: Taking taylor expansion of 1 in d3
6.766 * [backup-simplify]: Simplify 1 into 1
6.766 * [taylor]: Taking taylor expansion of 1 in d4
6.766 * [backup-simplify]: Simplify 1 into 1
6.766 * [backup-simplify]: Simplify 1 into 1
6.766 * [taylor]: Taking taylor expansion of 0 in d3
6.766 * [backup-simplify]: Simplify 0 into 0
6.766 * [taylor]: Taking taylor expansion of 0 in d4
6.766 * [backup-simplify]: Simplify 0 into 0
6.766 * [backup-simplify]: Simplify 0 into 0
6.767 * [backup-simplify]: Simplify (- 1) into -1
6.767 * [backup-simplify]: Simplify (+ 0 -1) into -1
6.767 * [taylor]: Taking taylor expansion of -1 in d4
6.767 * [backup-simplify]: Simplify -1 into -1
6.767 * [backup-simplify]: Simplify -1 into -1