Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:09:22 2013

Optimize a model with 457450 rows, 19600 columns and 1381800 nonzeros
Presolve removed 16224 rows and 9847 columns (presolve time = 5s) ...
Presolve removed 17164 rows and 9849 columns
Presolve time: 6.70s
Presolved: 440286 rows, 9751 columns, 1331126 nonzeros
Variable types: 75 continuous, 9676 integer (9676 binary)
Found heuristic solution: objective 393421.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10395    2.1899353e+05   0.000000e+00   4.315476e+09      5s
   23625    2.2671386e+05   0.000000e+00   6.032682e+08     10s
   38745    2.3297788e+05   0.000000e+00   3.164824e+08     15s
   55766    2.4398103e+05   0.000000e+00   2.002145e+08     20s
   73721    2.4879831e+05   0.000000e+00   2.684183e+08     25s
   93570    2.6146620e+05   0.000000e+00   5.407007e+07     30s
  109635    2.7218240e+05   0.000000e+00   7.147726e+06     35s
  113614    2.7381576e+05   0.000000e+00   0.000000e+00     38s
  113614    2.7381576e+05   0.000000e+00   0.000000e+00     38s

Root relaxation: objective 2.738158e+05, 113614 iterations, 38.41 seconds

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

     0     0 273815.764    0   16 393421.000 273815.764  30.4%     -   47s
H    0     0                    273834.00000 273815.764  0.01%     -   47s

Explored 0 nodes (113771 simplex iterations) in 47.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.738340000000e+05, best bound 2.738160000000e+05, gap 0.0066%