0.429 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.067 * * * [progress]: [2/2] Setting up program.
0.071 * [progress]: [Phase 2 of 3] Improving.
0.072 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.072 * * [simplify]: Extracting # 0 : cost  0
0.072 * * [simplify]: Extracting # 1 : cost  0
0.072 * * [simplify]: Extracting # 2 : cost  0
0.072 * * [simplify]: Extracting # 3 : cost  0
0.072 * * [simplify]: Extracting # 4 : cost  0
0.072 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.074 * * [simplify]: Extracting # 0 : cost  0
0.074 * * [simplify]: Extracting # 1 : cost  0
0.075 * * [simplify]: Extracting # 2 : cost  0
0.075 * * [simplify]: Extracting # 3 : cost  0
0.075 * * [simplify]: Extracting # 4 : cost  0
0.075 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.080 * * [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
0.081 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.095 * * [simplify]: Extracting # 0 : cost  0
0.095 * * [simplify]: Extracting # 1 : cost  0
0.095 * * [simplify]: Extracting # 2 : cost  0
0.095 * * [simplify]: Extracting # 3 : cost  0
0.095 * * [simplify]: Extracting # 4 : cost  0
0.095 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.159 * * [simplify]: Extracting # 0 : cost  0
0.160 * * [simplify]: Extracting # 1 : cost  0
0.160 * * [simplify]: Extracting # 2 : cost  0
0.160 * * [simplify]: Extracting # 3 : cost  0
0.161 * * [simplify]: Extracting # 4 : cost  0
0.161 * * [simplify]: iteration  4 :  213  enodes  (cost  7 )
0.301 * * [simplify]: Extracting # 0 : cost  0
0.301 * * [simplify]: Extracting # 1 : cost  0
0.302 * * [simplify]: Extracting # 2 : cost  0
0.303 * * [simplify]: Extracting # 3 : cost  0
0.303 * * [simplify]: Extracting # 4 : cost  0
0.304 * * [simplify]: iteration  5 :  658  enodes  (cost  7 )
1.208 * * [simplify]: Extracting # 0 : cost  0
1.222 * * [simplify]: Extracting # 1 : cost  0
1.228 * * [simplify]: Extracting # 2 : cost  0
1.234 * * [simplify]: Extracting # 3 : cost  0
1.239 * * [simplify]: Extracting # 4 : cost  0
1.244 * * [simplify]: iteration  6 :  3171  enodes  (cost  7 )
2.908 * * [simplify]: Extracting # 0 : cost  0
2.918 * * [simplify]: Extracting # 1 : cost  0
2.925 * * [simplify]: Extracting # 2 : cost  0
2.930 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
2.931 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.932 * * [progress]: iteration 1 / 4
2.932 * * * [progress]: picking best candidate
2.934 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.934 * * * [progress]: localizing error
2.940 * * * [progress]: generating rewritten candidates
2.940 * * * [progress]: generating series expansions
2.940 * * * [progress]: simplifying candidates
2.940 * [simplify]: Simplifying:
  
2.940 * * [simplify]: Extracting # 0 : cost  0
2.940 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
2.940 * * [simplify]: Extracting # 0 : cost  0
2.940 * * [simplify]: iteration done:  0  enodes  (cost  0 )
2.940 * [simplify]: Simplified to:
  
2.940 * * * [progress]: adding candidates to table
2.941 * [progress]: [Phase 3 of 3] Extracting.
2.943 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
2.944 * * [simplify]: Extracting # 0 : cost  0
2.944 * * [simplify]: Extracting # 1 : cost  0
2.944 * * [simplify]: Extracting # 2 : cost  0
2.944 * * [simplify]: Extracting # 3 : cost  0
2.944 * * [simplify]: Extracting # 4 : cost  0
2.944 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
2.944 * * [simplify]: Extracting # 0 : cost  0
2.944 * * [simplify]: iteration done:  6  enodes  (cost  7 )
2.944 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
4.975 * [regime-testing]: Baseline error score: 0.0031253906738342293
4.979 * [regime-testing]: Oracle error score: 0.0031253906738342293
4.979 * [regime-testing]: End program error score: 0.0031253906738342293