0.321 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.023 * * * [progress]: [2/2] Setting up program.
0.026 * [progress]: [Phase 2 of 3] Improving.
0.026 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (/ (- (+ (* (+ x y) z) (* (+ t y) a)) (* y b)) (+ (+ x t) y))
0.030 * * [simplify]: iteration  0 :  16  enodes  (cost  21 )
0.032 * * [simplify]: iteration  1 :  32  enodes  (cost  21 )
0.036 * * [simplify]: iteration  2 :  70  enodes  (cost  21 )
0.046 * * [simplify]: iteration  3 :  130  enodes  (cost  21 )
0.068 * * [simplify]: iteration  4 :  280  enodes  (cost  21 )
0.117 * * [simplify]: iteration  5 :  500  enodes  (cost  21 )
0.215 * * [simplify]: iteration  6 :  827  enodes  (cost  21 )
0.409 * * [simplify]: iteration  7 :  1732  enodes  (cost  21 )