Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:51:13 2013

Optimize a model with 818975 rows, 28900 columns and 2470950 nonzeros
Presolve removed 21632 rows and 14501 columns (presolve time = 6s) ...
Presolve removed 27182 rows and 14536 columns (presolve time = 10s) ...
Presolve removed 27340 rows and 14536 columns
Presolve time: 12.81s
Presolved: 791635 rows, 14364 columns, 2387763 nonzeros
Variable types: 77 continuous, 14287 integer (14287 binary)
Found heuristic solution: objective 661088.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6750    4.1664128e+05   0.000000e+00   4.574136e+08      5s
   14850    4.1726943e+05   0.000000e+00   4.479643e+09     11s
   21600    4.1824863e+05   0.000000e+00   5.887385e+08     16s
   28350    4.1939657e+05   0.000000e+00   3.916842e+09     20s
   35100    4.2093992e+05   0.000000e+00   3.868426e+09     25s
   44550    4.2525853e+05   0.000000e+00   8.181202e+08     30s
   55350    4.2808885e+05   0.000000e+00   5.607110e+08     36s
   66150    4.3239059e+05   0.000000e+00   5.784327e+08     40s
   78329    4.3934040e+05   0.000000e+00   1.124347e+09     45s
   89129    4.4437995e+05   0.000000e+00   8.413424e+08     50s
  102629    4.5009776e+05   0.000000e+00   1.153852e+08     55s
  112079    4.5425578e+05   0.000000e+00   1.546660e+08     60s
  124229    4.5930298e+05   0.000000e+00   1.161604e+08     65s
  137729    4.6562950e+05   0.000000e+00   4.691530e+07     70s
  151229    4.7296580e+05   0.000000e+00   1.588156e+08     75s
  163379    4.7850722e+05   0.000000e+00   4.124498e+08     80s
  174179    4.8342375e+05   0.000000e+00   1.560022e+08     85s
  184979    4.8799766e+05   0.000000e+00   7.864942e+07     90s
  195779    4.9270266e+05   0.000000e+00   1.791109e+07     95s
  206579    4.9790050e+05   0.000000e+00   8.862253e+06    101s
  208000    4.9870830e+05   0.000000e+00   0.000000e+00    103s
  208000    4.9870830e+05   0.000000e+00   0.000000e+00    103s

Root relaxation: objective 4.987083e+05, 208000 iterations, 103.08 seconds
Total elapsed time = 120.03s

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 498708.300    0   19 661088.000 498708.300  24.6%     -  121s
H    0     0                    498718.00000 498708.300  0.00%     -  122s

Explored 0 nodes (208530 simplex iterations) in 122.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.987180000000e+05, best bound 4.987090000000e+05, gap 0.0018%