3.918 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.033 * * * [progress]: [2/2] Setting up program.
0.037 * [progress]: [Phase 2 of 3] Improving.
0.037 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (+ (+ a b) (* c d)))
0.039 * * [simplify]: iteration  0 :  13  enodes  (cost  4 )
0.039 * * [simplify]: iteration  1 :  20  enodes  (cost  4 )
0.040 * * [simplify]: iteration  2 :  22  enodes  (cost  4 )
0.041 * * [simplify]: iteration  3 :  22  enodes  (cost  4 )
0.041 * [simplify]: Simplified to:
   (sqrt (+ (+ a b) (* c d)))
0.042 * [progress]: [Phase 3 of 3] Extracting.
0.048 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (+ (+ a b) (* c d)))
0.048 * * [simplify]: iteration  0 :  11  enodes  (cost  4 )
0.048 * * [simplify]: iteration  1 :  11  enodes  (cost  4 )
0.048 * [simplify]: Simplified to:
   (sqrt (+ (+ a b) (* c d)))
1.425 * [regime-testing]: End program error score: 8.014876859607451