12.073 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.053 * * * [progress]: [2/2] Setting up program.
0.056 * [progress]: [Phase 2 of 3] Improving.
0.056 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (sqrt (+ x y)) (sqrt x))
0.058 * * [simplify]: iteration  0 :  9  enodes  (cost  4 )
0.060 * * [simplify]: iteration  1 :  10  enodes  (cost  4 )
0.061 * * [simplify]: iteration  2 :  10  enodes  (cost  4 )
0.061 * [simplify]: Simplified to:
   (- (sqrt (+ x y)) (sqrt x))
0.062 * [progress]: [Phase 3 of 3] Extracting.
0.064 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (sqrt (+ x y)) (sqrt x))
0.065 * * [simplify]: iteration  0 :  7  enodes  (cost  4 )
0.065 * * [simplify]: iteration  1 :  7  enodes  (cost  4 )
0.065 * [simplify]: Simplified to:
   (- (sqrt (+ x y)) (sqrt x))
1.882 * [regime-testing]: End program error score: 34.58883410267488