4.406 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.076 * * * [progress]: [2/2] Setting up program.
0.079 * [progress]: [Phase 2 of 3] Improving.
0.079 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (sin (- y x)) (cos (- x y)))
0.081 * * [simplify]: iteration  0 :  13  enodes  (cost  5 )
0.082 * * [simplify]: iteration  1 :  16  enodes  (cost  5 )
0.083 * * [simplify]: iteration  2 :  16  enodes  (cost  5 )
0.083 * [simplify]: Simplified to:
   (- (sin (- y x)) (cos (- x y)))
0.084 * [progress]: [Phase 3 of 3] Extracting.
0.086 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (sin (- y x)) (cos (- x y)))
0.087 * * [simplify]: iteration  0 :  7  enodes  (cost  5 )
0.087 * [simplify]: Simplified to:
   (- (sin (- y x)) (cos (- x y)))
2.556 * [regime-testing]: End program error score: 15.072607726069608