Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:35 2012

Optimize a model with 259 rows, 285 columns and 930 nonzeros
Presolve removed 0 rows and 28 columns
Presolve time: 0.00s
Presolved: 259 rows, 257 columns, 902 nonzeros
Variable types: 0 continuous, 257 integer (256 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 0.000000e+00, 159 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   98   33.00000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
H    0     0                      23.0000000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   99   17.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   98   15.00000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   98    6.00000    0.00000   100%     -    0s
H   27    22                       5.0000000    0.89888  82.0%  19.9    0s
*   51    19              19       4.0000000    1.00000  75.0%  13.1    0s

Cutting planes:
  Gomory: 1

Explored 126 nodes (2190 simplex iterations) in 0.15 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%