12.375 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.075 * * * [progress]: [2/2] Setting up program.
0.079 * [progress]: [Phase 2 of 3] Improving.
0.080 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.080 * * [simplify]: Extracting # 0 : cost  0
0.080 * * [simplify]: Extracting # 1 : cost  0
0.080 * * [simplify]: Extracting # 2 : cost  0
0.080 * * [simplify]: Extracting # 3 : cost  0
0.080 * * [simplify]: Extracting # 4 : cost  0
0.080 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.083 * * [simplify]: Extracting # 0 : cost  0
0.083 * * [simplify]: Extracting # 1 : cost  0
0.083 * * [simplify]: Extracting # 2 : cost  0
0.083 * * [simplify]: Extracting # 3 : cost  0
0.083 * * [simplify]: Extracting # 4 : cost  0
0.083 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.088 * * [simplify]: Extracting # 0 : cost  0
0.088 * * [simplify]: Extracting # 1 : cost  0
0.088 * * [simplify]: Extracting # 2 : cost  0
0.088 * * [simplify]: Extracting # 3 : cost  0
0.088 * * [simplify]: Extracting # 4 : cost  0
0.089 * * [simplify]: iteration  2 :  29  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
0.096 * * [simplify]: Extracting # 5 : cost  0
0.096 * * [simplify]: iteration  3 :  69  enodes  (cost  7 )
0.114 * * [simplify]: Extracting # 0 : cost  0
0.115 * * [simplify]: Extracting # 1 : cost  0
0.115 * * [simplify]: Extracting # 2 : cost  0
0.115 * * [simplify]: Extracting # 3 : cost  0
0.115 * * [simplify]: Extracting # 4 : cost  0
0.115 * * [simplify]: iteration  4 :  200  enodes  (cost  7 )
0.247 * * [simplify]: Extracting # 0 : cost  0
0.248 * * [simplify]: Extracting # 1 : cost  0
0.249 * * [simplify]: Extracting # 2 : cost  0
0.250 * * [simplify]: Extracting # 3 : cost  0
0.251 * * [simplify]: Extracting # 4 : cost  0
0.252 * * [simplify]: Extracting # 5 : cost  0
0.253 * * [simplify]: iteration  5 :  611  enodes  (cost  7 )
0.909 * * [simplify]: Extracting # 0 : cost  0
0.915 * * [simplify]: Extracting # 1 : cost  0
0.920 * * [simplify]: Extracting # 2 : cost  0
0.926 * * [simplify]: Extracting # 3 : cost  0
0.931 * * [simplify]: Extracting # 4 : cost  0
0.937 * * [simplify]: iteration  6 :  2916  enodes  (cost  7 )
2.628 * * [simplify]: Extracting # 0 : cost  0
2.638 * * [simplify]: Extracting # 1 : cost  0
2.658 * * [simplify]: Extracting # 2 : cost  0
2.668 * * [simplify]: Extracting # 3 : cost  0
2.673 * * [simplify]: Extracting # 4 : cost  0
2.678 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
2.678 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.678 * * [progress]: iteration 1 / 4
2.678 * * * [progress]: picking best candidate
2.681 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
2.681 * * * [progress]: localizing error
2.687 * * * [progress]: generating rewritten candidates
2.687 * * * [progress]: generating series expansions
2.687 * * * [progress]: simplifying candidates
2.687 * [simplify]: Simplifying:
  
2.687 * * [simplify]: Extracting # 0 : cost  0
2.687 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
2.687 * * [simplify]: Extracting # 0 : cost  0
2.687 * * [simplify]: iteration done:  0  enodes  (cost  0 )
2.687 * [simplify]: Simplified to:
  
2.687 * * * [progress]: adding candidates to table
2.688 * [progress]: [Phase 3 of 3] Extracting.
2.690 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
2.690 * * [simplify]: Extracting # 0 : cost  0
2.690 * * [simplify]: Extracting # 1 : cost  0
2.690 * * [simplify]: Extracting # 2 : cost  0
2.690 * * [simplify]: Extracting # 3 : cost  0
2.690 * * [simplify]: Extracting # 4 : cost  0
2.690 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
2.690 * * [simplify]: Extracting # 0 : cost  0
2.690 * * [simplify]: iteration done:  6  enodes  (cost  7 )
2.690 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
4.730 * [regime-testing]: Baseline error score: 0.0029484888736993568
4.732 * [regime-testing]: Oracle error score: 0.0029484888736993568
4.732 * [regime-testing]: End program error score: 0.0029484888736993568