15.035 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.011 * * * [progress]: [2/2] Setting up program.
0.013 * [progress]: [Phase 2 of 3] Improving.
0.013 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (neg x1) x2)
0.016 * * [simplify]: iteration  0 :  6  enodes  (cost  2 )
0.018 * * [simplify]: iteration  1 :  9  enodes  (cost  2 )
0.020 * * [simplify]: iteration  2 :  12  enodes  (cost  2 )
0.022 * * [simplify]: iteration  3 :  12  enodes  (cost  2 )
0.022 * [simplify]: Simplified to:
   (- (neg x1) x2)
0.023 * [progress]: [Phase 3 of 3] Extracting.
0.025 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (neg x1) x2)
0.026 * * [simplify]: iteration  0 :  4  enodes  (cost  2 )
0.026 * [simplify]: Simplified to:
   (- (neg x1) x2)
0.540 * [regime-testing]: End program error score: 0