1.880 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.049 * * * [progress]: [2/2] Setting up program.
0.053 * [progress]: [Phase 2 of 3] Improving.
0.053 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* 2.0 (- (+ (* x y) (* z t)) (* (* (+ a (* b c)) c) i)))
0.054 * * [simplify]: iteration  0 :  18  enodes  (cost  19 )
0.056 * * [simplify]: iteration  1 :  32  enodes  (cost  19 )
0.060 * * [simplify]: iteration  2 :  75  enodes  (cost  19 )
0.072 * * [simplify]: iteration  3 :  201  enodes  (cost  19 )
0.113 * * [simplify]: iteration  4 :  550  enodes  (cost  19 )
0.249 * * [simplify]: iteration  5 :  1151  enodes  (cost  19 )
0.767 * * [simplify]: iteration  6 :  1657  enodes  (cost  19 )
2.135 * * [simplify]: iteration  7 :  1984  enodes  (cost  19 )
4.014 * * [simplify]: iteration  8 :  2574  enodes  (cost  19 )