Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:30:13 2012

Optimize a model with 9140 rows, 1122 columns and 28378 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.10s
Presolved: 9138 rows, 1120 columns, 30291 nonzeros
Variable types: 0 continuous, 1120 integer (1120 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 3.362637e+00, 5211 iterations, 0.38 seconds

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

     0     0    3.36264    0 1081   33.00000    3.36264  89.8%     -    0s
     0     0    4.00000    0  120   33.00000    4.00000  87.9%     -    1s
H    0     0                      24.0000000    4.00000  83.3%     -    1s
H    0     0                      10.0000000    4.00000  60.0%     -    1s
     0     0    4.66667    0  254   10.00000    4.66667  53.3%     -    1s
H    0     0                       9.0000000    4.66667  48.1%     -    1s
     0     0    4.73684    0 1042    9.00000    4.73684  47.4%     -    2s
     0     0    4.76538    0  973    9.00000    4.76538  47.1%     -    2s
     0     0    4.76538    0  971    9.00000    4.76538  47.1%     -    2s
     0     0    4.76538    0  959    9.00000    4.76538  47.1%     -    3s
H    0     0                       8.0000000    4.76538  40.4%     -    3s
     0     0    4.76538    0  964    8.00000    4.76538  40.4%     -    3s
     0     0    4.76538    0  903    8.00000    4.76538  40.4%     -    4s
     0     1    6.00000    0  903    8.00000    6.00000  25.0%     -    6s
H   27     4                       7.0000000    6.00000  14.3%   275    8s

Cutting planes:
  Gomory: 22
  Clique: 245
  Zero half: 12

Explored 46 nodes (24470 simplex iterations) in 9.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%