Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:23:39 2012

Optimize a model with 235 rows, 256 columns and 841 nonzeros
Presolve removed 0 rows and 25 columns
Presolve time: 0.00s
Presolved: 235 rows, 231 columns, 816 nonzeros
Variable types: 0 continuous, 231 integer (230 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 0.000000e+00, 145 iterations, 0.00 seconds

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

     0     0    0.00000    0   89   33.00000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      24.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   90   24.00000    0.00000   100%     -    0s
H    0     0                      18.0000000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   89   13.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   89    7.00000    0.00000   100%     -    0s
H   26    14                       5.0000000    0.61290  87.7%  22.4    0s
*   50    11              20       4.0000000    0.71930  82.0%  17.1    0s

Cutting planes:
  Gomory: 1

Explored 76 nodes (1851 simplex iterations) in 0.12 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%