4.888 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.033 * * * [progress]: [2/2] Setting up program.
0.036 * [progress]: [Phase 2 of 3] Improving.
0.036 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (+ (- x (* (+ y 0.5) (log y))) y) z)
0.037 * * [simplify]: iteration  0 :  10  enodes  (cost  12 )
0.038 * * [simplify]: iteration  1 :  21  enodes  (cost  12 )
0.041 * * [simplify]: iteration  2 :  62  enodes  (cost  12 )
0.050 * * [simplify]: iteration  3 :  183  enodes  (cost  12 )
0.087 * * [simplify]: iteration  4 :  570  enodes  (cost  11 )
0.211 * * [simplify]: iteration  5 :  1197  enodes  (cost  11 )
0.528 * * [simplify]: iteration  6 :  1887  enodes  (cost  11 )