65.567 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.040 * * * [progress]: [2/2] Setting up program.
0.042 * [progress]: [Phase 2 of 3] Improving.
0.042 * [simplify]: Simplifying:
  (- (* a a) (* b b))
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  0 :  5  enodes  (cost  7 )
0.045 * * [simplify]: Extracting # 0 : cost  0
0.045 * * [simplify]: Extracting # 1 : cost  0
0.045 * * [simplify]: Extracting # 2 : cost  0
0.045 * * [simplify]: iteration  1 :  13  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]: iteration  2 :  27  enodes  (cost  7 )
0.073 * * [simplify]: Extracting # 0 : cost  0
0.073 * * [simplify]: Extracting # 1 : cost  0
0.073 * * [simplify]: Extracting # 2 : cost  0
0.073 * * [simplify]: Extracting # 3 : cost  0
0.073 * * [simplify]: iteration  3 :  101  enodes  (cost  7 )
5.160 * * [simplify]: Extracting # 0 : cost  0
5.162 * * [simplify]: Extracting # 1 : cost  0
5.163 * * [simplify]: Extracting # 2 : cost  0
5.165 * * [simplify]: Extracting # 3 : cost  0
5.166 * * [simplify]: Extracting # 4 : cost  0
5.167 * * [simplify]: iteration  4 :  2175  enodes  (cost  7 )
9.073 * * [simplify]: Extracting # 0 : cost  0
9.083 * * [simplify]: Extracting # 1 : cost  0
9.091 * * [simplify]: Extracting # 2 : cost  0
9.098 * * [simplify]: Extracting # 3 : cost  0
9.104 * * [simplify]: Extracting # 4 : cost  0
9.107 * * [simplify]: Extracting # 5 : cost  0
9.111 * * [simplify]: Extracting # 6 : cost  0
9.114 * * [simplify]: iteration done:  5001  enodes  (cost  7 )
9.115 * [simplify]: Simplified to:
  (- (* a a) (* b b))
9.115 * * [progress]: iteration 1 / 4
9.115 * * * [progress]: picking best candidate
9.116 * * * * [pick]: Picked  #<alt (λ (a b) (- (* a a) (* b b)))>
9.116 * * * [progress]: localizing error
9.126 * * * [progress]: generating rewritten candidates
9.126 * * * [progress]: generating series expansions
9.127 * * * [progress]: simplifying candidates
9.127 * [simplify]: Simplifying:
  
9.127 * * [simplify]: Extracting # 0 : cost  0
9.127 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
9.127 * * [simplify]: Extracting # 0 : cost  0
9.127 * * [simplify]: iteration done:  0  enodes  (cost  0 )
9.127 * [simplify]: Simplified to:
  
9.127 * * * [progress]: adding candidates to table
9.127 * [progress]: [Phase 3 of 3] Extracting.
9.129 * [simplify]: Simplifying:
  (- (* a a) (* b b))
9.129 * * [simplify]: Extracting # 0 : cost  0
9.129 * * [simplify]: Extracting # 1 : cost  0
9.129 * * [simplify]: Extracting # 2 : cost  0
9.129 * * [simplify]: Extracting # 3 : cost  0
9.129 * * [simplify]: Extracting # 4 : cost  0
9.129 * * [simplify]: iteration  0 :  5  enodes  (cost  7 )
9.129 * * [simplify]: Extracting # 0 : cost  0
9.129 * * [simplify]: iteration done:  5  enodes  (cost  7 )
9.129 * [simplify]: Simplified to:
  (- (* a a) (* b b))
10.719 * [regime-testing]: End program error score: 0.007029481021439666
10.754 * [regime-testing]: Target error score: 0.0010001250156269534