5.663 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.100 * * * [progress]: [2/2] Setting up program.
0.103 * [progress]: [Phase 2 of 3] Improving.
0.103 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (- (sqrt (- x y)) (sqrt x)) (sqrt (neg y)))
0.105 * * [simplify]: iteration  0 :  16  enodes  (cost  7 )
0.107 * * [simplify]: iteration  1 :  28  enodes  (cost  7 )
0.108 * * [simplify]: iteration  2 :  44  enodes  (cost  7 )
0.109 * * [simplify]: iteration  3 :  55  enodes  (cost  7 )
0.110 * * [simplify]: iteration  4 :  88  enodes  (cost  7 )
0.111 * * [simplify]: iteration  5 :  103  enodes  (cost  7 )
0.112 * * [simplify]: iteration  6 :  131  enodes  (cost  7 )
0.115 * * [simplify]: iteration  7 :  211  enodes  (cost  7 )
0.116 * * [simplify]: iteration  8 :  242  enodes  (cost  7 )
0.117 * * [simplify]: iteration  9 :  242  enodes  (cost  7 )
0.118 * [simplify]: Simplified to:
   (- (- (sqrt (- x y)) (sqrt x)) (sqrt (neg y)))
0.118 * [progress]: [Phase 3 of 3] Extracting.
0.121 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (- (sqrt (- x y)) (sqrt x)) (sqrt (neg y)))
0.121 * * [simplify]: iteration  0 :  9  enodes  (cost  7 )
0.121 * [simplify]: Simplified to:
   (- (- (sqrt (- x y)) (sqrt x)) (sqrt (neg y)))
12.219 * [regime-testing]: End program error score: 29.563600743997377