Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:27:05 2012

Optimize a model with 55943 rows, 49506 columns and 216226 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 1.33s
Presolved: 56163 rows, 49504 columns, 265006 nonzeros
Variable types: 0 continuous, 49504 integer (49504 binary)
Found heuristic solution: objective 222.0000000

Root relaxation: objective 2.000000e+00, 32449 iterations, 3.09 seconds
Total elapsed time = 9.48s

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

     0     0    2.00000    0  390  222.00000    2.00000  99.1%     -   10s
H    0     0                     221.0000000    2.00000  99.1%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
H    0     0                       3.0000000    2.00000  33.3%     -   11s

Cutting planes:
  Gomory: 1

Explored 0 nodes (109010 simplex iterations) in 11.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%