Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:51 2012

Optimize a model with 249 rows, 275 columns and 895 nonzeros
Presolve removed 0 rows and 33 columns
Presolve time: 0.00s
Presolved: 249 rows, 242 columns, 862 nonzeros
Variable types: 0 continuous, 242 integer (241 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 0.000000e+00, 171 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  108   35.00000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
H    0     0                      25.0000000    0.00000   100%     -    0s
     0     0    0.26403    0  110   25.00000    0.26403  98.9%     -    0s
H    0     0                      22.0000000    0.26403  98.8%     -    0s
H    0     0                      17.0000000    0.26403  98.4%     -    0s
     0     0    0.80000    0  112   17.00000    0.80000  95.3%     -    0s
H    0     0                      13.0000000    0.80000  93.8%     -    0s
     0     0    0.80000    0  112   13.00000    0.80000  93.8%     -    0s
     0     2    0.80561    0  112   13.00000    0.80561  93.8%     -    0s
*   23    23              20       5.0000000    1.00000  80.0%  34.9    0s
*   75    21              15       4.0000000    1.00000  75.0%  23.0    0s

Cutting planes:
  Gomory: 4
  Zero half: 2
  Mod-K: 2

Explored 237 nodes (6898 simplex iterations) in 0.20 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%