7.353 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.065 * * * [progress]: [2/2] Setting up program.
0.069 * [progress]: [Phase 2 of 3] Improving.
0.069 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (+ (exp2 (- (* a c) (* b d))) (exp2 (+ (* b c) (* a d)))))
0.071 * * [simplify]: iteration  0 :  22  enodes  (cost  10 )
0.072 * * [simplify]: iteration  1 :  29  enodes  (cost  10 )
0.073 * * [simplify]: iteration  2 :  29  enodes  (cost  10 )
0.073 * [simplify]: Simplified to:
   (sqrt (+ (exp2 (- (* a c) (* b d))) (exp2 (+ (* b c) (* a d)))))
0.073 * [progress]: [Phase 3 of 3] Extracting.
0.077 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (+ (exp2 (- (* a c) (* b d))) (exp2 (+ (* b c) (* a d)))))
0.077 * * [simplify]: iteration  0 :  20  enodes  (cost  10 )
0.077 * * [simplify]: iteration  1 :  20  enodes  (cost  10 )
0.078 * [simplify]: Simplified to:
   (sqrt (+ (exp2 (- (* a c) (* b d))) (exp2 (+ (* b c) (* a d)))))
2.295 * [regime-testing]: End program error score: 0.7687054998106974