Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:42:35 2012

Optimize a model with 9380 rows, 3540 columns and 31386 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.23s
Presolved: 9378 rows, 3538 columns, 31068 nonzeros
Variable types: 0 continuous, 3538 integer (3538 binary)
Found heuristic solution: objective 59.0000000

Root relaxation: objective 2.000000e+00, 2508 iterations, 0.07 seconds

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

     0     0    2.00000    0  118   59.00000    2.00000  96.6%     -    0s
H    0     0                      56.0000000    2.00000  96.4%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.66667    0  146    4.00000    2.66667  33.3%     -    1s
     0     0    2.67059    0 3084    4.00000    2.67059  33.2%     -    1s
     0     0    2.67059    0 3095    4.00000    2.67059  33.2%     -    2s
     0     0    2.67059    0 2490    4.00000    2.67059  33.2%     -    4s
     0     0    2.67059    0 2498    4.00000    2.67059  33.2%     -    6s
     0     0    2.67059    0 2579    4.00000    2.67059  33.2%     -    7s
     0     0    2.67059    0 2590    4.00000    2.67059  33.2%     -    8s
     0     0    2.67059    0 2627    4.00000    2.67059  33.2%     -   10s
     0     0    2.67059    0 2627    4.00000    2.67059  33.2%     -   11s
     0     2    2.80000    0 2627    4.00000    2.80000  30.0%     -   14s
    11     5    3.00000    5  108    4.00000    3.00000  25.0%   367   15s

Cutting planes:
  Clique: 62
  Zero half: 7

Explored 17 nodes (50574 simplex iterations) in 16.38 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%