Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:07 2012

Optimize a model with 273 rows, 300 columns and 980 nonzeros
Presolve removed 0 rows and 32 columns
Presolve time: 0.00s
Presolved: 273 rows, 268 columns, 948 nonzeros
Variable types: 0 continuous, 268 integer (267 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 0.000000e+00, 185 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  111   39.00000    0.00000   100%     -    0s
H    0     0                      37.0000000    0.00000   100%     -    0s
H    0     0                      18.0000000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
     0     0    0.10778    0  113   17.00000    0.10778  99.4%     -    0s
H    0     0                      14.0000000    0.10778  99.2%     -    0s
     0     0    0.71912    0  120   14.00000    0.71912  94.9%     -    0s
H    0     0                      13.0000000    0.71912  94.5%     -    0s
     0     0    0.71912    0  120   13.00000    0.71912  94.5%     -    0s
H    0     0                      10.0000000    0.71912  92.8%     -    0s
H    0     0                       9.0000000    0.71912  92.0%     -    0s
     0     2    0.72693    0  120    9.00000    0.72693  91.9%     -    0s
H   27    27                       6.0000000    1.00000  83.3%  20.2    0s
*   37    18              28       5.0000000    1.00000  80.0%  15.7    0s
*   51    18               9       4.0000000    1.45981  63.5%  15.3    0s

Cutting planes:
  Gomory: 4

Explored 98 nodes (1995 simplex iterations) in 0.10 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%