1.240 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.054 * * * [progress]: [2/2] Setting up program.
0.058 * [progress]: [Phase 2 of 3] Improving.
0.058 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (sqrt (/ x 3.0)) (sqrt (- (/ x 7.0) 1.0)))
0.060 * * [simplify]: iteration  0 :  14  enodes  (cost  6 )
0.062 * * [simplify]: iteration  1 :  16  enodes  (cost  6 )
0.063 * * [simplify]: iteration  2 :  16  enodes  (cost  6 )
0.063 * [simplify]: Simplified to:
   (- (sqrt (/ x 3.0)) (sqrt (- (/ x 7.0) 1.0)))
0.064 * [progress]: [Phase 3 of 3] Extracting.
0.066 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (sqrt (/ x 3.0)) (sqrt (- (/ x 7.0) 1.0)))
0.067 * * [simplify]: iteration  0 :  10  enodes  (cost  6 )
0.067 * [simplify]: Simplified to:
   (- (sqrt (/ x 3.0)) (sqrt (- (/ x 7.0) 1.0)))
1.908 * [regime-testing]: End program error score: 0.8110791697107237