Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:42:12 2012

Optimize a model with 537 rows, 488 columns and 1828 nonzeros
Presolve removed 0 rows and 18 columns
Presolve time: 0.00s
Presolved: 537 rows, 470 columns, 1810 nonzeros
Variable types: 0 continuous, 470 integer (469 binary)
Found heuristic solution: objective 108.0000000

Root relaxation: objective 0.000000e+00, 264 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  108.00000    0.00000   100%     -    0s
H    0     0                      87.0000000    0.00000   100%     -    0s
H    0     0                      66.0000000    0.00000   100%     -    0s
H    0     0                      63.0000000    0.00000   100%     -    0s
     0     0    0.45274    0  202   63.00000    0.45274  99.3%     -    0s
H    0     0                      62.0000000    0.45274  99.3%     -    0s
     0     0    0.71787    0  204   62.00000    0.71787  98.8%     -    0s
H    0     0                      58.0000000    0.71787  98.8%     -    0s
     0     0    0.72109    0  204   58.00000    0.72109  98.8%     -    0s
     0     0    0.72109    0  204   58.00000    0.72109  98.8%     -    0s
H    0     0                      57.0000000    0.72109  98.7%     -    0s
     0     2    0.73329    0  204   57.00000    0.73329  98.7%     -    0s
*   34    30              18      18.0000000    2.60992  85.5%  47.4    0s

Cutting planes:
  Gomory: 2
  Zero half: 2
  Mod-K: 1

Explored 612 nodes (22928 simplex iterations) in 1.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%