Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:53:50 2012

Optimize a model with 57791 rows, 50400 columns and 222654 nonzeros
Presolve removed 463 rows and 2914 columns
Presolve time: 1.52s
Presolved: 57328 rows, 47486 columns, 218110 nonzeros
Variable types: 0 continuous, 47486 integer (47486 binary)
Found heuristic solution: objective 224.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   42675    3.0000872e+00   1.870455e+01   0.000000e+00      5s
   49643    3.0000983e+00   5.607836e+01   0.000000e+00     10s
   54230    3.0001045e+00   1.026777e+01   0.000000e+00     15s
   57500    3.0000000e+00   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 3.000000e+00, 57500 iterations, 18.62 seconds
Total elapsed time = 64.01s

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

*    0     0               0       3.0000000    3.00000   0.0%     -   75s

Explored 0 nodes (137455 simplex iterations) in 75.67 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%