Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:13:58 2012

Optimize a model with 10556 rows, 3422 columns and 34858 nonzeros
Presolve time: 0.09s
Presolved: 10556 rows, 3422 columns, 35210 nonzeros
Variable types: 0 continuous, 3422 integer (3422 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 2.000000e+00, 3258 iterations, 0.10 seconds

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

     0     0    2.00000    0  116   37.00000    2.00000  94.6%     -    0s
H    0     0                      12.0000000    2.00000  83.3%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -    2s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -    6s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   11s
     0     0    2.00000    0  116    4.00000    2.00000  50.0%     -   15s
     0     0    2.00000    0  116    4.00000    2.00000  50.0%     -   19s
     0     0    2.00000    0  116    4.00000    2.00000  50.0%     -   22s
     0     2    2.00000    0  116    4.00000    2.00000  50.0%     -   31s
     1     3    3.00000    1  625    4.00000    2.00000  50.0% 27902   38s
     2     4    3.00000    1  504    4.00000    3.00000  25.0% 21696   42s
    10     2     cutoff    3         4.00000    3.00000  25.0%  5420   45s
    31     1     cutoff    5         4.00000    3.00000  25.0%  2566   50s

Cutting planes:
  Clique: 103

Explored 33 nodes (141342 simplex iterations) in 51.55 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%