53.630 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.030 * * * [progress]: [2/2] Setting up program.
0.036 * [progress]: [Phase 2 of 3] Improving.
0.037 * [simplify]: Simplifying:
  (- (+ x y) x)
0.037 * * [simplify]: Extracting # 0 : cost  0
0.037 * * [simplify]: Extracting # 1 : cost  0
0.037 * * [simplify]: Extracting # 2 : cost  0
0.037 * * [simplify]: Extracting # 3 : cost  0
0.037 * * [simplify]: Extracting # 4 : cost  0
0.037 * * [simplify]: iteration  0 :  4  enodes  (cost  5 )
0.039 * * [simplify]: Extracting # 0 : cost  0
0.039 * * [simplify]: Extracting # 1 : cost  0
0.039 * * [simplify]: Extracting # 2 : cost  0
0.039 * * [simplify]: iteration  1 :  9  enodes  (cost  5 )
0.042 * * [simplify]: Extracting # 0 : cost  0
0.042 * * [simplify]: Extracting # 1 : cost  0
0.042 * * [simplify]: Extracting # 2 : cost  0
0.043 * * [simplify]: iteration  2 :  17  enodes  (cost  5 )
0.048 * * [simplify]: Extracting # 0 : cost  0
0.049 * * [simplify]: Extracting # 1 : cost  0
0.049 * * [simplify]: Extracting # 2 : cost  0
0.049 * * [simplify]: iteration  3 :  26  enodes  (cost  3 )
0.056 * * [simplify]: Extracting # 0 : cost  0
0.056 * * [simplify]: Extracting # 1 : cost  0
0.056 * * [simplify]: iteration  4 :  54  enodes  (cost  1 )
0.062 * * [simplify]: Extracting # 0 : cost  0
0.062 * * [simplify]: iteration  5 :  67  enodes  (cost  1 )
0.066 * * [simplify]: Extracting # 0 : cost  0
0.066 * * [simplify]: iteration  6 :  72  enodes  (cost  1 )
0.069 * * [simplify]: Extracting # 0 : cost  0
0.069 * * [simplify]: iteration done:  72  enodes  (cost  1 )
0.069 * [simplify]: Simplified to:
  y
0.077 * * [progress]: iteration 1 / 4
0.077 * * * [progress]: picking best candidate
0.080 * * * * [pick]: Picked  #<alt (λ (x y) y)>
0.081 * * * [progress]: localizing error
0.082 * * * [progress]: generating rewritten candidates
0.082 * * * [progress]: generating series expansions
0.082 * * * [progress]: simplifying candidates
0.083 * [simplify]: Simplifying:
  
0.083 * * [simplify]: Extracting # 0 : cost  0
0.083 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.083 * * [simplify]: Extracting # 0 : cost  0
0.083 * * [simplify]: iteration done:  0  enodes  (cost  0 )
0.083 * [simplify]: Simplified to:
  
0.083 * * * [progress]: adding candidates to table
0.083 * [progress]: [Phase 3 of 3] Extracting.
0.087 * [simplify]: Simplifying:
  y
0.087 * * [simplify]: Extracting # 0 : cost  0
0.087 * * [simplify]: Extracting # 1 : cost  0
0.087 * * [simplify]: iteration  0 :  1  enodes  (cost  1 )
0.087 * * [simplify]: Extracting # 0 : cost  0
0.087 * * [simplify]: iteration done:  1  enodes  (cost  1 )
0.087 * [simplify]: Simplified to:
  y
1.560 * [regime-testing]: Baseline error score: 0
1.564 * [regime-testing]: Oracle error score: 0
1.564 * [regime-testing]: End program error score: 0
1.667 * [regime-testing]: Target error score: 0