Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:58:49 2013

Optimize a model with 818975 rows, 28900 columns and 2470950 nonzeros
Presolve removed 28910 rows and 14549 columns (presolve time = 5s) ...
Presolve removed 38801 rows and 14617 columns (presolve time = 10s) ...
Presolve removed 39441 rows and 14618 columns
Presolve time: 13.11s
Presolved: 779534 rows, 14282 columns, 2350284 nonzeros
Variable types: 70 continuous, 14212 integer (14212 binary)
Found heuristic solution: objective 659239.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    5400    4.3140244e+05   0.000000e+00   3.627733e+08      5s
   13500    4.3302835e+05   0.000000e+00   4.967114e+08     11s
   20250    4.3385081e+05   0.000000e+00   5.577824e+09     16s
   27000    4.3744482e+05   0.000000e+00   3.759683e+09     21s
   33750    4.3870552e+05   0.000000e+00   2.127015e+09     26s
   39150    4.4020202e+05   0.000000e+00   1.822614e+09     30s
   48600    4.4153566e+05   0.000000e+00   4.999390e+08     36s
   55350    4.4343743e+05   0.000000e+00   1.778399e+09     40s
   63450    4.4525861e+05   0.000000e+00   1.275080e+10     46s
   71550    4.4754538e+05   0.000000e+00   8.047713e+08     50s
   79650    4.5042690e+05   0.000000e+00   2.754087e+09     55s
   90450    4.5330318e+05   0.000000e+00   2.567978e+09     60s
  101250    4.5755360e+05   0.000000e+00   2.964295e+08     65s
  114750    4.6229089e+05   0.000000e+00   1.943893e+08     70s
  129600    4.6582747e+05   0.000000e+00   6.721137e+08     75s
  144477    4.7089858e+05   0.000000e+00   2.546122e+08     80s
  157977    4.7680319e+05   0.000000e+00   2.728320e+07     86s
  170130    4.8389803e+05   0.000000e+00   3.743697e+07     90s
  182291    4.9377058e+05   0.000000e+00   3.064018e+06     95s
  191743    5.0216091e+05   0.000000e+00   5.282493e+05    102s
  192183    5.0214237e+05   0.000000e+00   0.000000e+00    103s
  192183    5.0214237e+05   0.000000e+00   0.000000e+00    103s

Root relaxation: objective 5.021424e+05, 192183 iterations, 103.31 seconds
Total elapsed time = 120.43s

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

     0     0 502142.367    0   12 659239.000 502142.367  23.8%     -  121s
H    0     0                    502167.00000 502142.367  0.00%     -  121s

Explored 0 nodes (192458 simplex iterations) in 121.54 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.021670000000e+05, best bound 5.021430000000e+05, gap 0.0048%