Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:44:22 2012

Optimize a model with 299 rows, 326 columns and 1071 nonzeros
Presolve removed 0 rows and 33 columns
Presolve time: 0.00s
Presolved: 299 rows, 293 columns, 1038 nonzeros
Variable types: 0 continuous, 293 integer (292 binary)
Found heuristic solution: objective 55.0000000

Root relaxation: objective 0.000000e+00, 217 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  136   55.00000    0.00000   100%     -    0s
H    0     0                      51.0000000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
H    0     0                      25.0000000    0.00000   100%     -    0s
     0     0    0.24000    0  138   25.00000    0.24000  99.0%     -    0s
H    0     0                      15.0000000    0.24000  98.4%     -    0s
     0     0    0.86336    0  145   15.00000    0.86336  94.2%     -    0s
     0     0    0.86339    0  141   15.00000    0.86339  94.2%     -    0s
     0     0    0.86339    0  141   15.00000    0.86339  94.2%     -    0s
     0     2    0.86776    0  141   15.00000    0.86776  94.2%     -    0s
H   27    27                      10.0000000    1.00000  90.0%  19.4    0s
*   30    26              23       5.0000000    1.00000  80.0%  21.2    0s
*   53    21              16       4.0000000    1.00000  75.0%  19.0    0s

Cutting planes:
  Gomory: 4
  Zero half: 1
  Mod-K: 1

Explored 165 nodes (4730 simplex iterations) in 0.18 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%