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

Optimize a model with 58724 rows, 50850 columns and 225898 nonzeros
Presolve removed 20 rows and 4052 columns
Presolve time: 1.30s
Presolved: 58704 rows, 46798 columns, 221326 nonzeros
Variable types: 0 continuous, 46798 integer (46798 binary)
Found heuristic solution: objective 225.0000000

Root relaxation: objective 2.000000e+00, 31768 iterations, 2.88 seconds
Total elapsed time = 8.20s

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

     0     0    2.00000    0  386  225.00000    2.00000  99.1%     -    9s
H    0     0                     223.0000000    2.00000  99.1%     -    9s
H    0     0                       4.0000000    2.00000  50.0%     -    9s
     0     0    2.66667    0 8413    4.00000    2.66667  33.3%     -   30s
H    0     0                       3.0000000    2.66667  11.1%     -   41s

Cutting planes:
  Clique: 4
  Zero half: 4

Explored 0 nodes (138180 simplex iterations) in 41.95 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%