6.845 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.049 * * * [progress]: [2/2] Setting up program.
0.052 * [progress]: [Phase 2 of 3] Improving.
0.052 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (exp2 x) (* (* (* (sqrt x) (sqrt x)) (sqrt x)) (sqrt x)))
0.054 * * [simplify]: iteration  0 :  12  enodes  (cost  4 )
0.055 * * [simplify]: iteration  1 :  25  enodes  (cost  4 )
0.056 * * [simplify]: iteration  2 :  38  enodes  (cost  4 )
0.058 * * [simplify]: iteration  3 :  60  enodes  (cost  4 )
0.059 * * [simplify]: iteration  4 :  144  enodes  (cost  4 )
0.063 * * [simplify]: iteration  5 :  429  enodes  (cost  4 )
0.077 * * [simplify]: iteration  6 :  1609  enodes  (cost  4 )
0.140 * * [simplify]: iteration  7 :  5002  enodes  (cost  4 )
0.141 * [simplify]: Simplified to:
   (+ (exp2 x) (neg (* x x)))
0.144 * [progress]: [Phase 3 of 3] Extracting.
0.146 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ (exp2 x) (neg (* x x)))
0.146 * * [simplify]: iteration  0 :  9  enodes  (cost  4 )
0.147 * * [simplify]: iteration  1 :  9  enodes  (cost  4 )
0.147 * [simplify]: Simplified to:
   (+ (exp2 x) (neg (* x x)))
1.818 * [regime-testing]: End program error score: 0.01318171613147966