Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:45:09 2012

Optimize a model with 11799 rows, 3540 columns and 38643 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.29s
Presolved: 11797 rows, 3538 columns, 38243 nonzeros
Variable types: 0 continuous, 3538 integer (3538 binary)
Found heuristic solution: objective 59.0000000

Root relaxation: objective 2.000000e+00, 2623 iterations, 0.09 seconds

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

     0     0    2.00000    0  118   59.00000    2.00000  96.6%     -    0s
H    0     0                      58.0000000    2.00000  96.6%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  705    5.00000    2.66667  46.7%     -    1s
     0     0    2.66667    0 1598    5.00000    2.66667  46.7%     -    2s
     0     0    2.66667    0  223    5.00000    2.66667  46.7%     -    5s
H    0     0                       4.0000000    2.66667  33.3%     -    6s
     0     2    2.66667    0  150    4.00000    2.66667  33.3%     -    9s
     1     3    3.00000    1  122    4.00000    2.66667  33.3%  9305   10s

Cutting planes:
  Clique: 57
  Zero half: 1

Explored 15 nodes (47333 simplex iterations) in 12.97 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%