Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:57 2012

Optimize a model with 311 rows, 329 columns and 1104 nonzeros
Presolve removed 0 rows and 22 columns
Presolve time: 0.00s
Presolved: 311 rows, 307 columns, 1082 nonzeros
Variable types: 0 continuous, 307 integer (306 binary)
Found heuristic solution: objective 50.0000000

Root relaxation: objective 0.000000e+00, 208 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  124   50.00000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
     0     0    0.12408    0  126   28.00000    0.12408   100%     -    0s
H    0     0                      24.0000000    0.12408  99.5%     -    0s
H    0     0                      16.0000000    0.12408  99.2%     -    0s
     0     0    0.73847    0  138   16.00000    0.73847  95.4%     -    0s
H    0     0                      14.0000000    0.73847  94.7%     -    0s
     0     0    0.73847    0  141   14.00000    0.73847  94.7%     -    0s
     0     0    0.73847    0  131   14.00000    0.73847  94.7%     -    0s
H    0     0                      13.0000000    0.73847  94.3%     -    0s
H    0     0                       9.0000000    0.73847  91.8%     -    0s
     0     2    0.73876    0  131    9.00000    0.73876  91.8%     -    0s
*   38    23              30       5.0000000    1.00000  80.0%  33.7    0s
*  130    24              13       4.0000000    1.00000  75.0%  29.9    0s

Cutting planes:
  Gomory: 4
  Zero half: 4

Explored 204 nodes (8051 simplex iterations) in 0.24 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%