Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:16:12 2012

Optimize a model with 4107 rows, 702 columns and 12894 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.06s
Presolved: 4105 rows, 700 columns, 17366 nonzeros
Variable types: 0 continuous, 700 integer (700 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.714286e+00, 3486 iterations, 0.21 seconds

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

     0     0    3.71429    0  481   26.00000    3.71429  85.7%     -    0s
H    0     0                      25.0000000    3.71429  85.1%     -    0s
     0     0    5.00000    0   91   25.00000    5.00000  80.0%     -    0s
H    0     0                      24.0000000    5.00000  79.2%     -    0s
     0     0    5.00000    0  102   24.00000    5.00000  79.2%     -    0s
H    0     0                      22.0000000    5.00000  77.3%     -    0s
H    0     0                       6.0000000    5.00000  16.7%     -    0s
     0     0    5.00000    0   97    6.00000    5.00000  16.7%     -    0s

Cutting planes:
  Zero half: 5

Explored 0 nodes (5295 simplex iterations) in 0.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%