Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:08:29 2012

Optimize a model with 7154 rows, 2450 columns and 23716 nonzeros
Presolve time: 0.07s
Presolved: 7154 rows, 2450 columns, 24222 nonzeros
Variable types: 0 continuous, 2450 integer (2450 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 2.000000e+00, 1986 iterations, 0.04 seconds

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

     0     0    2.00000    0   98   29.00000    2.00000  93.1%     -    0s
H    0     0                      12.0000000    2.00000  83.3%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0   98    5.00000    2.00000  60.0%     -    0s
     0     0    2.00000    0   98    5.00000    2.00000  60.0%     -    2s
H    0     0                       4.0000000    2.00000  50.0%     -    3s
     0     0    2.00000    0   98    4.00000    2.00000  50.0%     -    4s
     0     0    2.00000    0   98    4.00000    2.00000  50.0%     -    6s
     0     0    2.00000    0   98    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0   98    4.00000    2.00000  50.0%     -    9s
     0     2    2.00000    0   98    4.00000    2.00000  50.0%     -   13s
     1     3    3.00000    1  390    4.00000    2.00000  50.0% 14669   16s
    10     4     cutoff    5         4.00000    3.00000  25.0%  3346   20s
    47     3     cutoff    7         4.00000    3.00000  25.0%  1408   25s

Cutting planes:
  Clique: 120

Explored 73 nodes (128475 simplex iterations) in 29.18 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%