Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:13:30 2012

Optimize a model with 54281 rows, 47742 columns and 209496 nonzeros
Presolve removed 456 rows and 3926 columns
Presolve time: 1.42s
Presolved: 53825 rows, 43816 columns, 203988 nonzeros
Variable types: 0 continuous, 43816 integer (43816 binary)
Found heuristic solution: objective 218.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29939    3.0000863e+00   3.728571e+01   0.000000e+00      5s
   34394    3.0000911e+00   3.044711e+01   0.000000e+00     10s
   38686    3.0000000e+00   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 3.000000e+00, 38686 iterations, 14.84 seconds
Total elapsed time = 44.07s
Total elapsed time = 45.37s

    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%     -   46s

Explored 0 nodes (104075 simplex iterations) in 46.41 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%