2.143 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.044 * * * [progress]: [2/2] Setting up program.
0.048 * [progress]: [Phase 2 of 3] Improving.
0.048 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (* 2.0 (- (+ (* x y) (* z t)) (* (* (+ a (* b c)) c) i)))
0.049 * * [simplify]: iteration  0 :  18  enodes  (cost  19 )
0.051 * * [simplify]: iteration  1 :  33  enodes  (cost  18 )
0.062 * * [simplify]: iteration  2 :  85  enodes  (cost  17 )
0.074 * * [simplify]: iteration  3 :  229  enodes  (cost  17 )
0.119 * * [simplify]: iteration  4 :  663  enodes  (cost  17 )
0.275 * * [simplify]: iteration  5 :  1536  enodes  (cost  17 )
0.852 * * [simplify]: iteration  6 :  2832  enodes  (cost  17 )