Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:37:07 2012

Optimize a model with 56720 rows, 48180 columns and 217246 nonzeros
Presolve removed 440 rows and 2 columns
Presolve time: 1.44s
Presolved: 56499 rows, 48178 columns, 263598 nonzeros
Variable types: 0 continuous, 48178 integer (48178 binary)
Found heuristic solution: objective 219.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34810    3.0000597e+00   1.806667e+02   0.000000e+00      5s
   43774    3.0000981e+00   2.000053e+02   0.000000e+00     10s
   48742    3.0001037e+00   1.902687e+01   0.000000e+00     15s
   52744    3.0001066e+00   2.942613e+01   0.000000e+00     20s
   54855    3.0000000e+00   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 3.000000e+00, 54855 iterations, 22.87 seconds
Total elapsed time = 62.43s
Total elapsed time = 66.73s

    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%     -   68s

Explored 0 nodes (135596 simplex iterations) in 68.51 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%