Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:51:28 2012

Optimize a model with 18460 rows, 5112 columns and 60208 nonzeros
Presolve time: 0.14s
Presolved: 18460 rows, 5112 columns, 60314 nonzeros
Variable types: 0 continuous, 5112 integer (5112 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 2.000000e+00, 10206 iterations, 1.83 seconds

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

     0     0    2.00000    0  142   45.00000    2.00000  95.6%     -    2s
H    0     0                      17.0000000    2.00000  88.2%     -    2s
H    0     0                       5.0000000    2.00000  60.0%     -    2s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    2s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    5s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    6s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    7s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    7s
     0     2    2.00000    0  142    5.00000    2.00000  60.0%     -   18s
     1     3    3.00000    1  644    5.00000    2.00736  59.9% 21552   27s
     2     4    3.00000    1  709    5.00000    3.00000  40.0% 21142   36s
    10     6    4.00000    5  150    5.00000    3.00000  40.0%  5428   40s
*   23     5              17       4.0000000    3.00000  25.0%  2452   40s
    31     3    3.00000    3  145    4.00000    3.00000  25.0%  2340   45s

Cutting planes:
  Clique: 14

Explored 35 nodes (92317 simplex iterations) in 45.12 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%