Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:20:40 2012

Optimize a model with 16590 rows, 4970 columns and 54460 nonzeros
Presolve time: 0.13s
Presolved: 16590 rows, 4970 columns, 54572 nonzeros
Variable types: 0 continuous, 4970 integer (4970 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 2.000000e+00, 6578 iterations, 0.57 seconds

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

     0     0    2.00000    0  140   45.00000    2.00000  95.6%     -    3s
H    0     0                      13.0000000    2.00000  84.6%     -    3s
H    0     0                       5.0000000    2.00000  60.0%     -    4s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -    7s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   16s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   24s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   35s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   43s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   49s
H    0     0                       4.0000000    2.00000  50.0%     -   75s
     0     2    2.00000    0  140    4.00000    2.00000  50.0%     -   75s
     1     3    3.00000    1  402    4.00000    2.00000  50.0% 42947   84s
     2     4    3.00000    1  229    4.00000    3.00000  25.0% 31637   93s
     5     5    3.00000    3  138    4.00000    3.00000  25.0% 13707   95s
    15     5     cutoff    6         4.00000    3.00000  25.0%  5740  101s

Cutting planes:
  Clique: 113

Explored 21 nodes (223381 simplex iterations) in 104.58 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%