22.296 * [progress]: [Phase 1 of 3] Setting up.
0.002 * * * [progress]: [1/2] Preparing points
0.043 * * * [progress]: [2/2] Setting up program.
0.048 * [progress]: [Phase 2 of 3] Improving.
0.048 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.048 * * [simplify]: Extracting # 0 : cost  0
0.048 * * [simplify]: Extracting # 1 : cost  0
0.048 * * [simplify]: Extracting # 2 : cost  0
0.048 * * [simplify]: Extracting # 3 : cost  0
0.048 * * [simplify]: Extracting # 4 : cost  0
0.048 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.051 * * [simplify]: Extracting # 0 : cost  0
0.051 * * [simplify]: Extracting # 1 : cost  0
0.051 * * [simplify]: Extracting # 2 : cost  0
0.051 * * [simplify]: Extracting # 3 : cost  0
0.051 * * [simplify]: Extracting # 4 : cost  0
0.051 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.057 * * [simplify]: Extracting # 0 : cost  0
0.057 * * [simplify]: Extracting # 1 : cost  0
0.057 * * [simplify]: Extracting # 2 : cost  0
0.057 * * [simplify]: Extracting # 3 : cost  0
0.058 * * [simplify]: Extracting # 4 : cost  0
0.058 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.067 * * [simplify]: Extracting # 0 : cost  0
0.067 * * [simplify]: Extracting # 1 : cost  0
0.067 * * [simplify]: Extracting # 2 : cost  0
0.067 * * [simplify]: Extracting # 3 : cost  0
0.068 * * [simplify]: Extracting # 4 : cost  0
0.068 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.088 * * [simplify]: Extracting # 0 : cost  0
0.088 * * [simplify]: Extracting # 1 : cost  0
0.089 * * [simplify]: Extracting # 2 : cost  0
0.089 * * [simplify]: Extracting # 3 : cost  0
0.089 * * [simplify]: Extracting # 4 : cost  0
0.089 * * [simplify]: iteration  4 :  213  enodes  (cost  7 )
0.189 * * [simplify]: Extracting # 0 : cost  0
0.190 * * [simplify]: Extracting # 1 : cost  0
0.192 * * [simplify]: Extracting # 2 : cost  0
0.193 * * [simplify]: Extracting # 3 : cost  0
0.194 * * [simplify]: Extracting # 4 : cost  0
0.195 * * [simplify]: iteration  5 :  658  enodes  (cost  7 )
1.107 * * [simplify]: Extracting # 0 : cost  0
1.109 * * [simplify]: Extracting # 1 : cost  0
1.112 * * [simplify]: Extracting # 2 : cost  0
1.115 * * [simplify]: Extracting # 3 : cost  0
1.117 * * [simplify]: Extracting # 4 : cost  0
1.123 * * [simplify]: iteration  6 :  3171  enodes  (cost  7 )
2.681 * * [simplify]: Extracting # 0 : cost  0
2.691 * * [simplify]: Extracting # 1 : cost  0
2.702 * * [simplify]: Extracting # 2 : cost  0
2.709 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
2.709 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.710 * * [progress]: iteration 1 / 4
2.710 * * * [progress]: picking best candidate
2.712 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.712 * * * [progress]: localizing error
2.718 * * * [progress]: generating rewritten candidates
2.718 * * * [progress]: generating series expansions
2.718 * * * [progress]: simplifying candidates
2.719 * [simplify]: Simplifying:
  
2.719 * * [simplify]: Extracting # 0 : cost  0
2.719 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
2.719 * * [simplify]: Extracting # 0 : cost  0
2.719 * * [simplify]: iteration done:  0  enodes  (cost  0 )
2.719 * [simplify]: Simplified to:
  
2.719 * * * [progress]: adding candidates to table
2.719 * [progress]: [Phase 3 of 3] Extracting.
2.721 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
2.721 * * [simplify]: Extracting # 0 : cost  0
2.721 * * [simplify]: Extracting # 1 : cost  0
2.721 * * [simplify]: Extracting # 2 : cost  0
2.721 * * [simplify]: Extracting # 3 : cost  0
2.721 * * [simplify]: Extracting # 4 : cost  0
2.721 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
2.722 * * [simplify]: Extracting # 0 : cost  0
2.722 * * [simplify]: iteration done:  6  enodes  (cost  7 )
2.722 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
5.219 * [regime-testing]: Baseline error score: 0.0029484888736993568
5.223 * [regime-testing]: Oracle error score: 0.0029484888736993568
5.223 * [regime-testing]: End program error score: 0.0029484888736993568