Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:36:21 2012

Optimize a model with 8359 rows, 3080 columns and 27883 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.17s
Presolved: 8357 rows, 3078 columns, 27579 nonzeros
Variable types: 0 continuous, 3078 integer (3078 binary)
Found heuristic solution: objective 55.0000000

Root relaxation: objective 2.000000e+00, 2332 iterations, 0.06 seconds

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

     0     0    2.00000    0  110   55.00000    2.00000  96.4%     -    0s
H    0     0                      41.0000000    2.00000  95.1%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  386    5.00000    2.66667  46.7%     -    1s
H    0     0                       4.0000000    2.66667  33.3%     -    1s
     0     0    3.00000    0  103    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   92    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  116    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   78    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  115    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   93    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  102    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  102    4.00000    3.00000  25.0%     -    1s
     0     2    3.00000    0   98    4.00000    3.00000  25.0%     -    1s

Cutting planes:
  Zero half: 11

Explored 3 nodes (15084 simplex iterations) in 1.82 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%