Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:56:27 2012

Optimize a model with 9967 rows, 3192 columns and 32814 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.23s
Presolved: 10021 rows, 3190 columns, 35594 nonzeros
Variable types: 0 continuous, 3190 integer (3190 binary)
Found heuristic solution: objective 56.0000000

Root relaxation: objective 2.000000e+00, 2328 iterations, 0.07 seconds

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

     0     0    2.00000    0  112   56.00000    2.00000  96.4%     -    0s
H    0     0                      52.0000000    2.00000  96.2%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0 2315    5.00000    3.00000  40.0%     -    2s
     0     0    3.00935    0 2271    5.00000    3.00935  39.8%     -    3s
     0     0    3.00935    0 2285    5.00000    3.00935  39.8%     -    4s
     0     0    3.00935    0 2195    5.00000    3.00935  39.8%     -    8s
     0     0    3.00935    0 2114    5.00000    3.00935  39.8%     -   13s
     0     0    3.00935    0 2053    5.00000    3.00935  39.8%     -   19s
     0     0    3.00935    0 2159    5.00000    3.00935  39.8%     -   26s
H    0     0                       4.0000000    3.00935  24.8%     -   27s

Cutting planes:
  Clique: 18
  Zero half: 1

Explored 0 nodes (124845 simplex iterations) in 27.01 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%