Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:07:17 2013

Optimize a model with 457450 rows, 19600 columns and 1381800 nonzeros
Presolve removed 17772 rows and 9863 columns (presolve time = 5s) ...
Presolve removed 17772 rows and 9863 columns
Presolve time: 6.18s
Presolved: 439678 rows, 9737 columns, 1328073 nonzeros
Variable types: 66 continuous, 9671 integer (9671 binary)
Found heuristic solution: objective 457285.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9450    2.7739765e+05   0.000000e+00   1.624539e+09      5s
   20790    2.7879145e+05   0.000000e+00   3.841688e+08     10s
   34020    2.8353324e+05   0.000000e+00   3.181737e+08     15s
   46305    2.8539655e+05   0.000000e+00   1.608982e+08     20s
   61426    2.8765681e+05   0.000000e+00   1.485405e+08     25s
   76567    2.9013910e+05   0.000000e+00   3.848218e+08     30s
   96477    2.9743059e+05   0.000000e+00   1.026657e+08     35s
  112546    3.0587271e+05   0.000000e+00   4.456798e+07     40s
  132391    3.1858723e+05   0.000000e+00   2.027208e+06     45s
  138676    3.2144823e+05   0.000000e+00   0.000000e+00     49s
  138676    3.2144823e+05   0.000000e+00   0.000000e+00     49s

Root relaxation: objective 3.214482e+05, 138676 iterations, 48.79 seconds

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

     0     0 321448.231    0   25 457285.000 321448.231  29.7%     -   58s
H    0     0                    321472.00000 321448.231  0.01%     -   59s

Explored 0 nodes (139518 simplex iterations) in 59.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.214720000000e+05, best bound 3.214490000000e+05, gap 0.0072%