16.595 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.036 * * * [progress]: [2/2] Setting up program.
0.038 * [progress]: [Phase 2 of 3] Improving.
0.038 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
0.038 * * [simplify]: Extracting # 0 : cost  0
0.038 * * [simplify]: Extracting # 1 : cost  0
0.038 * * [simplify]: Extracting # 2 : cost  0
0.038 * * [simplify]: Extracting # 3 : cost  0
0.038 * * [simplify]: Extracting # 4 : cost  0
0.038 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
0.040 * * [simplify]: Extracting # 0 : cost  0
0.040 * * [simplify]: Extracting # 1 : cost  0
0.040 * * [simplify]: Extracting # 2 : cost  0
0.040 * * [simplify]: Extracting # 3 : cost  0
0.040 * * [simplify]: Extracting # 4 : cost  0
0.040 * * [simplify]: iteration  1 :  14  enodes  (cost  7 )
0.043 * * [simplify]: Extracting # 0 : cost  0
0.043 * * [simplify]: Extracting # 1 : cost  0
0.043 * * [simplify]: Extracting # 2 : cost  0
0.043 * * [simplify]: Extracting # 3 : cost  0
0.043 * * [simplify]: Extracting # 4 : cost  0
0.043 * * [simplify]: iteration  2 :  30  enodes  (cost  7 )
0.049 * * [simplify]: Extracting # 0 : cost  0
0.049 * * [simplify]: Extracting # 1 : cost  0
0.049 * * [simplify]: Extracting # 2 : cost  0
0.050 * * [simplify]: Extracting # 3 : cost  0
0.050 * * [simplify]: Extracting # 4 : cost  0
0.050 * * [simplify]: iteration  3 :  74  enodes  (cost  7 )
0.069 * * [simplify]: Extracting # 0 : cost  0
0.069 * * [simplify]: Extracting # 1 : cost  0
0.069 * * [simplify]: Extracting # 2 : cost  0
0.069 * * [simplify]: Extracting # 3 : cost  0
0.070 * * [simplify]: Extracting # 4 : cost  0
0.070 * * [simplify]: iteration  4 :  213  enodes  (cost  7 )
0.153 * * [simplify]: Extracting # 0 : cost  0
0.153 * * [simplify]: Extracting # 1 : cost  0
0.154 * * [simplify]: Extracting # 2 : cost  0
0.155 * * [simplify]: Extracting # 3 : cost  0
0.155 * * [simplify]: Extracting # 4 : cost  0
0.156 * * [simplify]: iteration  5 :  658  enodes  (cost  7 )
0.761 * * [simplify]: Extracting # 0 : cost  0
0.764 * * [simplify]: Extracting # 1 : cost  0
0.767 * * [simplify]: Extracting # 2 : cost  0
0.770 * * [simplify]: Extracting # 3 : cost  0
0.772 * * [simplify]: Extracting # 4 : cost  0
0.775 * * [simplify]: iteration  6 :  3171  enodes  (cost  7 )
1.804 * * [simplify]: Extracting # 0 : cost  0
1.815 * * [simplify]: Extracting # 1 : cost  0
1.820 * * [simplify]: Extracting # 2 : cost  0
1.825 * * [simplify]: iteration done:  5000  enodes  (cost  7 )
1.825 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
1.825 * * [progress]: iteration 1 / 4
1.825 * * * [progress]: picking best candidate
1.827 * * * * [pick]: Picked  #<alt (λ (x y) (- (pow x 4.0) (pow y 4.0)))>
1.827 * * * [progress]: localizing error
1.833 * * * [progress]: generating rewritten candidates
1.833 * * * [progress]: generating series expansions
1.833 * * * [progress]: simplifying candidates
1.833 * [simplify]: Simplifying:
  
1.833 * * [simplify]: Extracting # 0 : cost  0
1.833 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
1.833 * * [simplify]: Extracting # 0 : cost  0
1.833 * * [simplify]: iteration done:  0  enodes  (cost  0 )
1.833 * [simplify]: Simplified to:
  
1.833 * * * [progress]: adding candidates to table
1.833 * [progress]: [Phase 3 of 3] Extracting.
1.835 * [simplify]: Simplifying:
  (- (pow x 4.0) (pow y 4.0))
1.835 * * [simplify]: Extracting # 0 : cost  0
1.835 * * [simplify]: Extracting # 1 : cost  0
1.835 * * [simplify]: Extracting # 2 : cost  0
1.835 * * [simplify]: Extracting # 3 : cost  0
1.835 * * [simplify]: Extracting # 4 : cost  0
1.836 * * [simplify]: iteration  0 :  6  enodes  (cost  7 )
1.836 * * [simplify]: Extracting # 0 : cost  0
1.836 * * [simplify]: iteration done:  6  enodes  (cost  7 )
1.836 * [simplify]: Simplified to:
  (- (pow x 4.0) (pow y 4.0))
2.926 * [regime-testing]: End program error score: 0.0026253281660207524