Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:06:42 2012

Optimize a model with 511 rows, 481 columns and 1756 nonzeros
Presolve removed 0 rows and 18 columns
Presolve time: 0.00s
Presolved: 511 rows, 463 columns, 1738 nonzeros
Variable types: 0 continuous, 463 integer (462 binary)
Found heuristic solution: objective 97.0000000

Root relaxation: objective 0.000000e+00, 270 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  201   97.00000    0.00000   100%     -    0s
H    0     0                      92.0000000    0.00000   100%     -    0s
H    0     0                      82.0000000    0.00000   100%     -    0s
H    0     0                      80.0000000    0.00000   100%     -    0s
     0     0    0.27533    0  203   80.00000    0.27533   100%     -    0s
H    0     0                      56.0000000    0.27533   100%     -    0s
     0     0    0.91136    0  206   56.00000    0.91136  98.4%     -    0s
H    0     0                      53.0000000    0.91136  98.3%     -    0s
H    0     0                      31.0000000    0.91136  97.1%     -    0s
     0     0    0.91339    0  209   31.00000    0.91339  97.1%     -    0s
     0     0    0.91339    0  209   31.00000    0.91339  97.1%     -    0s
     0     2    0.91442    0  209   31.00000    0.91442  97.1%     -    0s
*   51    51              29      17.0000000    1.06334  93.7%  22.9    0s
*   82    63              19      16.0000000    1.06521  93.3%  24.6    0s
*  235    92              11      15.0000000    3.72862  75.1%  32.7    0s

Cutting planes:
  Gomory: 4
  Zero half: 1

Explored 1070 nodes (35699 simplex iterations) in 1.43 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%