Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:26:57 2012

Optimize a model with 14652 rows, 4422 columns and 48114 nonzeros
Presolve time: 0.11s
Presolved: 14652 rows, 4422 columns, 48312 nonzeros
Variable types: 0 continuous, 4422 integer (4422 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 2.000000e+00, 4610 iterations, 0.24 seconds

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

     0     0    2.00000    0  132   38.00000    2.00000  94.7%     -    1s
H    0     0                      15.0000000    2.00000  86.7%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    2.00000    0  132    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  132    5.00000    2.00000  60.0%     -   10s
     0     0    2.00000    0  132    5.00000    2.00000  60.0%     -   18s
     0     0    2.00000    0  132    5.00000    2.00000  60.0%     -   24s
     0     0    2.00000    0  132    5.00000    2.00000  60.0%     -   32s
     0     0    2.00000    0  132    5.00000    2.00000  60.0%     -   38s
     0     2    2.00000    0  132    5.00000    2.00000  60.0%     -   56s
     1     3    2.66667    1  506    5.00000    2.00000  60.0% 53438   73s
     2     4    2.50000    1  687    5.00000    2.50000  50.0% 36227   82s
H   27    13                       4.0000000    2.50000  37.5%  2917   84s
    31     9 infeasible    2         4.00000    2.50000  37.5%  2736   86s
    48     6     cutoff    3         4.00000    2.66667  33.3%  2103   90s

Cutting planes:
  Clique: 157

Explored 59 nodes (196583 simplex iterations) in 93.44 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%