0.965 * [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.
0.022 * [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 :  26  enodes  (cost  17 )
0.033 * * [simplify]: iteration  2 :  61  enodes  (cost  17 )
0.041 * * [simplify]: iteration  3 :  141  enodes  (cost  17 )
0.062 * * [simplify]: iteration  4 :  364  enodes  (cost  17 )