0.282 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.019 * * * [progress]: [2/2] Setting up program.
0.021 * [progress]: [Phase 2 of 3] Improving.
0.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- x (/ (* (* y 2.0) z) (- (* (* z 2.0) z) (* y t))))
0.022 * * [simplify]: iteration  0 :  13  enodes  (cost  17 )
0.024 * * [simplify]: iteration  1 :  25  enodes  (cost  17 )
0.027 * * [simplify]: iteration  2 :  59  enodes  (cost  17 )
0.034 * * [simplify]: iteration  3 :  133  enodes  (cost  17 )
0.057 * * [simplify]: iteration  4 :  354  enodes  (cost  17 )