Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:45:21 2012

Optimize a model with 60381 rows, 51756 columns and 231765 nonzeros
Presolve removed 24 rows and 4996 columns
Presolve time: 1.45s
Presolved: 60357 rows, 46760 columns, 226239 nonzeros
Variable types: 0 continuous, 46760 integer (46760 binary)
Found heuristic solution: objective 227.0000000

Root relaxation: objective 2.000000e+00, 33889 iterations, 3.44 seconds

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

     0     0    2.00000    0  410  227.00000    2.00000  99.1%     -   10s
H    0     0                     225.0000000    2.00000  99.1%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   11s
H    0     0                       3.0000000    2.00000  33.3%     -   11s

Cutting planes:
  Gomory: 1

Explored 0 nodes (109430 simplex iterations) in 11.26 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%