4.219 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.064 * * * [progress]: [2/2] Setting up program.
0.066 * [progress]: [Phase 2 of 3] Improving.
0.067 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (- (cos x) (sin x)))
0.069 * * [simplify]: iteration  0 :  7  enodes  (cost  4 )
0.069 * * [simplify]: iteration  1 :  8  enodes  (cost  4 )
0.070 * * [simplify]: iteration  2 :  8  enodes  (cost  4 )
0.070 * [simplify]: Simplified to:
   (sqrt (- (cos x) (sin x)))
0.071 * [progress]: [Phase 3 of 3] Extracting.
0.073 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (sqrt (- (cos x) (sin x)))
0.073 * * [simplify]: iteration  0 :  5  enodes  (cost  4 )
0.074 * [simplify]: Simplified to:
   (sqrt (- (cos x) (sin x)))
2.243 * [regime-testing]: End program error score: 0.10341006744795625