5.606 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.075 * * * [progress]: [2/2] Setting up program.
0.077 * [progress]: [Phase 2 of 3] Improving.
0.078 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (cos (* (+ x y) (- x y)))
0.079 * * [simplify]: iteration  0 :  10  enodes  (cost  4 )
0.080 * * [simplify]: iteration  1 :  25  enodes  (cost  4 )
0.081 * * [simplify]: iteration  2 :  54  enodes  (cost  4 )
0.083 * * [simplify]: iteration  3 :  131  enodes  (cost  4 )
0.085 * * [simplify]: iteration  4 :  206  enodes  (cost  4 )
0.087 * * [simplify]: iteration  5 :  296  enodes  (cost  4 )
0.091 * * [simplify]: iteration  6 :  447  enodes  (cost  4 )
0.097 * * [simplify]: iteration  7 :  1304  enodes  (cost  4 )
0.131 * * [simplify]: iteration  8 :  5001  enodes  (cost  4 )
0.132 * [simplify]: Simplified to:
   (cos (* (+ x y) (- x y)))
0.132 * [progress]: [Phase 3 of 3] Extracting.
0.134 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (cos (* (+ x y) (- x y)))
0.135 * * [simplify]: iteration  0 :  8  enodes  (cost  4 )
0.135 * * [simplify]: iteration  1 :  8  enodes  (cost  4 )
0.135 * [simplify]: Simplified to:
   (cos (* (+ x y) (- x y)))
2.656 * [regime-testing]: End program error score: 45.23202310618826