5.514 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.087 * * * [progress]: [2/2] Setting up program.
0.090 * [progress]: [Phase 2 of 3] Improving.
0.091 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (+ (- (- 1.0 (* 2.0 x)) (sqrt (+ 1.0 (* (* (* 4.0 (+ (neg 1.0) x)) x) (- 1.0 (* 4.0 y)))))) (* (* 8.0 x) y)) (+ (neg 2.0) (* 8.0 y)))
0.093 * * [simplify]: iteration  0 :  59  enodes  (cost  19 )
0.095 * * [simplify]: iteration  1 :  159  enodes  (cost  19 )
0.099 * * [simplify]: iteration  2 :  505  enodes  (cost  19 )
0.110 * * [simplify]: iteration  3 :  1555  enodes  (cost  19 )
0.145 * * [simplify]: iteration  4 :  4187  enodes  (cost  19 )
0.233 * * [simplify]: iteration  5 :  5001  enodes  (cost  19 )
0.234 * [simplify]: Simplified to:
   (/ (+ (- (- 1.0 (* 2.0 x)) (sqrt (+ 1.0 (* (* (* 4.0 (+ (neg 1.0) x)) x) (- 1.0 (* 4.0 y)))))) (* (* 8.0 x) y)) (+ (neg 2.0) (* 8.0 y)))
0.234 * [progress]: [Phase 3 of 3] Extracting.
0.237 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (/ (+ (- (- 1.0 (* 2.0 x)) (sqrt (+ 1.0 (* (* (* 4.0 (+ (neg 1.0) x)) x) (- 1.0 (* 4.0 y)))))) (* (* 8.0 x) y)) (+ (neg 2.0) (* 8.0 y)))
0.238 * * [simplify]: iteration  0 :  37  enodes  (cost  19 )
0.238 * * [simplify]: iteration  1 :  37  enodes  (cost  19 )
0.239 * [simplify]: Simplified to:
   (/ (+ (- (- 1.0 (* 2.0 x)) (sqrt (+ 1.0 (* (* (* 4.0 (+ (neg 1.0) x)) x) (- 1.0 (* 4.0 y)))))) (* (* 8.0 x) y)) (+ (neg 2.0) (* 8.0 y)))
3.137 * [regime-testing]: End program error score: 40.03064304517295