42.449 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.039 * * * [progress]: [2/2] Setting up program.
0.041 * [progress]: [Phase 2 of 3] Improving.
0.041 * [simplify]: Simplifying:
  (- (+ (- (* d1 d2) (* d1 d3)) (* d4 d1)) (* d1 d1))
0.041 * * [simplify]: Extracting # 0 : cost  0
0.042 * * [simplify]: Extracting # 1 : cost  0
0.042 * * [simplify]: Extracting # 2 : cost  0
0.042 * * [simplify]: Extracting # 3 : cost  0
0.042 * * [simplify]: Extracting # 4 : cost  0
0.042 * * [simplify]: Extracting # 5 : cost  0
0.042 * * [simplify]: Extracting # 6 : cost  0
0.042 * * [simplify]: iteration  0 :  11  enodes  (cost  15 )
0.043 * * [simplify]: Extracting # 0 : cost  0
0.044 * * [simplify]: Extracting # 1 : cost  0
0.044 * * [simplify]: Extracting # 2 : cost  0
0.044 * * [simplify]: Extracting # 3 : cost  0
0.044 * * [simplify]: Extracting # 4 : cost  0
0.044 * * [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 )
0.124 * * [simplify]: Extracting # 0 : cost  0
0.124 * * [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 )
1.035 * * [simplify]: Extracting # 0 : cost  0
1.036 * * [simplify]: Extracting # 1 : cost  0
1.036 * * [simplify]: Extracting # 2 : cost  0
1.037 * * [simplify]: Extracting # 3 : cost  0
1.037 * * [simplify]: iteration  5 :  981  enodes  (cost  9 )
1.749 * * [simplify]: Extracting # 0 : cost  0
1.750 * * [simplify]: Extracting # 1 : cost  0
1.752 * * [simplify]: Extracting # 2 : cost  0
1.753 * * [simplify]: Extracting # 3 : cost  0
1.755 * * [simplify]: iteration  6 :  1357  enodes  (cost  9 )
3.007 * * [simplify]: Extracting # 0 : cost  0
3.008 * * [simplify]: Extracting # 1 : cost  0
3.009 * * [simplify]: Extracting # 2 : cost  0
3.010 * * [simplify]: iteration  7 :  1851  enodes  (cost  9 )
4.669 * * [simplify]: Extracting # 0 : cost  0
4.670 * * [simplify]: Extracting # 1 : cost  0
4.671 * * [simplify]: Extracting # 2 : cost  0
4.672 * * [simplify]: iteration  8 :  2247  enodes  (cost  9 )
5.821 * * [simplify]: Extracting # 0 : cost  0
5.822 * * [simplify]: Extracting # 1 : cost  0
5.823 * * [simplify]: iteration  9 :  2358  enodes  (cost  9 )
6.711 * * [simplify]: Extracting # 0 : cost  0
6.712 * * [simplify]: iteration done:  2358  enodes  (cost  9 )
6.712 * [simplify]: Simplified to:
  (* d1 (- (+ (- d2 d3) d4) d1))
6.715 * * [progress]: iteration 1 / 4
6.715 * * * [progress]: picking best candidate
6.718 * * * * [pick]: Picked  #<alt (λ (d1 d2 d3 d4) (- (+ (- (* d1 d2) (* d1 d3)) (* d4 d1)) (* d1 d1)))>
6.718 * * * [progress]: localizing error
6.734 * * * [progress]: generating rewritten candidates
6.734 * * * * [progress]: [ 1 / 2 ] rewriting at (2)
6.917 * * * * [progress]: [ 2 / 2 ] rewriting at (2 1)
6.952 * * * [progress]: generating series expansions
6.952 * * * * [progress]: [ 1 / 2 ] generating series at (2)