0.360 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.057 * * * [progress]: [2/2] Setting up program.
0.061 * [progress]: [Phase 2 of 3] Improving.
0.061 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.061 * * [simplify]: Extracting # 0 : cost  0
0.061 * * [simplify]: Extracting # 1 : cost  0
0.061 * * [simplify]: Extracting # 2 : cost  0
0.061 * * [simplify]: Extracting # 3 : cost  0
0.062 * * [simplify]: Extracting # 4 : cost  0
0.062 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.064 * * [simplify]: Extracting # 0 : cost  0
0.064 * * [simplify]: Extracting # 1 : cost  0
0.064 * * [simplify]: Extracting # 2 : cost  0
0.064 * * [simplify]: Extracting # 3 : cost  0
0.064 * * [simplify]: Extracting # 4 : cost  0
0.064 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.069 * * [simplify]: Extracting # 0 : cost  0
0.069 * * [simplify]: Extracting # 1 : cost  0
0.069 * * [simplify]: Extracting # 2 : cost  0
0.070 * * [simplify]: Extracting # 3 : cost  0
0.070 * * [simplify]: Extracting # 4 : cost  0
0.070 * * [simplify]: iteration  2 :  29  enodes  (cost  7 )
0.081 * * [simplify]: Extracting # 0 : cost  0
0.082 * * [simplify]: Extracting # 1 : cost  0
0.082 * * [simplify]: Extracting # 2 : cost  0
0.082 * * [simplify]: Extracting # 3 : cost  0
0.082 * * [simplify]: Extracting # 4 : cost  0
0.082 * * [simplify]: Extracting # 5 : cost  0
0.082 * * [simplify]: iteration  3 :  69  enodes  (cost  7 )
0.139 * * [simplify]: Extracting # 0 : cost  0
0.139 * * [simplify]: Extracting # 1 : cost  0
0.140 * * [simplify]: Extracting # 2 : cost  0
0.140 * * [simplify]: Extracting # 3 : cost  0
0.140 * * [simplify]: Extracting # 4 : cost  0
0.141 * * [simplify]: iteration  4 :  200  enodes  (cost  7 )
0.391 * * [simplify]: Extracting # 0 : cost  0
0.393 * * [simplify]: Extracting # 1 : cost  0
0.395 * * [simplify]: Extracting # 2 : cost  0
0.397 * * [simplify]: Extracting # 3 : cost  0
0.399 * * [simplify]: Extracting # 4 : cost  0
0.401 * * [simplify]: Extracting # 5 : cost  0
0.402 * * [simplify]: iteration  5 :  611  enodes  (cost  7 )
1.748 * * [simplify]: Extracting # 0 : cost  0
1.753 * * [simplify]: Extracting # 1 : cost  0
1.758 * * [simplify]: Extracting # 2 : cost  0
1.763 * * [simplify]: Extracting # 3 : cost  0
1.774 * * [simplify]: Extracting # 4 : cost  0
1.779 * * [simplify]: iteration  6 :  2916  enodes  (cost  7 )
3.639 * * [simplify]: Extracting # 0 : cost  0
3.650 * * [simplify]: Extracting # 1 : cost  0
3.660 * * [simplify]: Extracting # 2 : cost  0
3.671 * * [simplify]: Extracting # 3 : cost  0
3.681 * * [simplify]: Extracting # 4 : cost  0
3.690 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
3.690 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
3.691 * * [progress]: iteration 1 / 4
3.691 * * * [progress]: picking best candidate
3.693 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
3.693 * * * [progress]: localizing error
3.699 * * * [progress]: generating rewritten candidates
3.699 * * * [progress]: generating series expansions
3.699 * * * [progress]: simplifying candidates
3.699 * [simplify]: Simplifying:
  
3.699 * * [simplify]: Extracting # 0 : cost  0
3.699 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
3.699 * * [simplify]: Extracting # 0 : cost  0
3.699 * * [simplify]: iteration done:  0  enodes  (cost  0 )
3.699 * [simplify]: Simplified to:
  
3.699 * * * [progress]: adding candidates to table
3.700 * [progress]: [Phase 3 of 3] Extracting.
3.709 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
3.709 * * [simplify]: Extracting # 0 : cost  0
3.709 * * [simplify]: Extracting # 1 : cost  0
3.709 * * [simplify]: Extracting # 2 : cost  0
3.709 * * [simplify]: Extracting # 3 : cost  0
3.709 * * [simplify]: Extracting # 4 : cost  0
3.709 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
3.709 * * [simplify]: Extracting # 0 : cost  0
3.709 * * [simplify]: iteration done:  6  enodes  (cost  7 )
3.709 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
5.811 * [regime-testing]: Baseline error score: 0.002000250031253907
5.813 * [regime-testing]: Oracle error score: 0.002000250031253907
5.814 * [regime-testing]: End program error score: 0.002000250031253907