13.905 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.074 * * * [progress]: [2/2] Setting up program.
0.078 * [progress]: [Phase 2 of 3] Improving.
0.078 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.078 * * [simplify]: Extracting # 0 : cost  0
0.078 * * [simplify]: Extracting # 1 : cost  0
0.078 * * [simplify]: Extracting # 2 : cost  0
0.078 * * [simplify]: Extracting # 3 : cost  0
0.078 * * [simplify]: Extracting # 4 : cost  0
0.078 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.081 * * [simplify]: Extracting # 0 : cost  0
0.081 * * [simplify]: Extracting # 1 : cost  0
0.081 * * [simplify]: Extracting # 2 : cost  0
0.081 * * [simplify]: Extracting # 3 : cost  0
0.081 * * [simplify]: Extracting # 4 : cost  0
0.082 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.087 * * [simplify]: Extracting # 0 : cost  0
0.087 * * [simplify]: Extracting # 1 : cost  0
0.087 * * [simplify]: Extracting # 2 : cost  0
0.087 * * [simplify]: Extracting # 3 : cost  0
0.088 * * [simplify]: Extracting # 4 : cost  0
0.088 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.101 * * [simplify]: Extracting # 0 : cost  0
0.101 * * [simplify]: Extracting # 1 : cost  0
0.101 * * [simplify]: Extracting # 2 : cost  0
0.102 * * [simplify]: Extracting # 3 : cost  0
0.102 * * [simplify]: Extracting # 4 : cost  0
0.102 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.142 * * [simplify]: Extracting # 0 : cost  0
0.143 * * [simplify]: Extracting # 1 : cost  0
0.143 * * [simplify]: Extracting # 2 : cost  0
0.144 * * [simplify]: Extracting # 3 : cost  0
0.144 * * [simplify]: Extracting # 4 : cost  0
0.144 * * [simplify]: iteration  4 :  213  enodes  (cost  7 )
0.268 * * [simplify]: Extracting # 0 : cost  0
0.269 * * [simplify]: Extracting # 1 : cost  0
0.270 * * [simplify]: Extracting # 2 : cost  0
0.270 * * [simplify]: Extracting # 3 : cost  0
0.276 * * [simplify]: Extracting # 4 : cost  0
0.277 * * [simplify]: iteration  5 :  658  enodes  (cost  7 )
1.152 * * [simplify]: Extracting # 0 : cost  0
1.155 * * [simplify]: Extracting # 1 : cost  0
1.158 * * [simplify]: Extracting # 2 : cost  0
1.161 * * [simplify]: Extracting # 3 : cost  0
1.163 * * [simplify]: Extracting # 4 : cost  0
1.166 * * [simplify]: iteration  6 :  3171  enodes  (cost  7 )
2.867 * * [simplify]: Extracting # 0 : cost  0
2.886 * * [simplify]: Extracting # 1 : cost  0
2.894 * * [simplify]: Extracting # 2 : cost  0
2.899 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
2.899 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.899 * * [progress]: iteration 1 / 4
2.899 * * * [progress]: picking best candidate
2.901 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.901 * * * [progress]: localizing error
2.907 * * * [progress]: generating rewritten candidates
2.907 * * * [progress]: generating series expansions
2.907 * * * [progress]: simplifying candidates
2.907 * [simplify]: Simplifying:
  
2.907 * * [simplify]: Extracting # 0 : cost  0
2.907 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
2.907 * * [simplify]: Extracting # 0 : cost  0
2.907 * * [simplify]: iteration done:  0  enodes  (cost  0 )
2.907 * [simplify]: Simplified to:
  
2.907 * * * [progress]: adding candidates to table
2.907 * [progress]: [Phase 3 of 3] Extracting.
2.909 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
2.909 * * [simplify]: Extracting # 0 : cost  0
2.909 * * [simplify]: Extracting # 1 : cost  0
2.909 * * [simplify]: Extracting # 2 : cost  0
2.909 * * [simplify]: Extracting # 3 : cost  0
2.910 * * [simplify]: Extracting # 4 : cost  0
2.910 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
2.910 * * [simplify]: Extracting # 0 : cost  0
2.910 * * [simplify]: iteration done:  6  enodes  (cost  7 )
2.910 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
5.078 * [regime-testing]: End program error score: 0.0025003125390673834