Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:45:44 2012

Optimize a model with 10029 rows, 3540 columns and 33333 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.24s
Presolved: 10086 rows, 3538 columns, 36474 nonzeros
Variable types: 0 continuous, 3538 integer (3538 binary)
Found heuristic solution: objective 59.0000000

Root relaxation: objective 2.000000e+00, 2622 iterations, 0.08 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                      56.0000000    2.00000  96.4%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  311    5.00000    2.66667  46.7%     -    1s
     0     0    2.68263    0 2978    5.00000    2.68263  46.3%     -    1s
     0     0    2.68263    0 2983    5.00000    2.68263  46.3%     -    2s
     0     0    2.68263    0 2629    5.00000    2.68263  46.3%     -    4s
     0     0    2.68263    0 2633    5.00000    2.68263  46.3%     -    6s
     0     0    2.68263    0 2350    5.00000    2.68263  46.3%     -    7s
     0     0    2.68263    0 2516    5.00000    2.68263  46.3%     -    8s
     0     0    2.68263    0 2546    5.00000    2.68263  46.3%     -    9s
     0     0    2.68263    0 2546    5.00000    2.68263  46.3%     -   10s
     0     2    3.00000    0 2546    5.00000    3.00000  40.0%     -   13s
H   27     4                       4.0000000    3.00000  25.0%   370   15s

Cutting planes:
  Clique: 144
  Zero half: 14

Explored 32 nodes (47537 simplex iterations) in 15.31 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%