Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:04:08 2012

Optimize a model with 533 rows, 500 columns and 1830 nonzeros
Presolve removed 0 rows and 17 columns
Presolve time: 0.00s
Presolved: 533 rows, 483 columns, 1813 nonzeros
Variable types: 0 continuous, 483 integer (482 binary)
Found heuristic solution: objective 93.0000000

Root relaxation: objective 0.000000e+00, 292 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  202   93.00000    0.00000   100%     -    0s
H    0     0                      72.0000000    0.00000   100%     -    0s
H    0     0                      56.0000000    0.00000   100%     -    0s
     0     0    0.33403    0  204   56.00000    0.33403  99.4%     -    0s
H    0     0                      46.0000000    0.33403  99.3%     -    0s
     0     0    0.74534    0  208   46.00000    0.74534  98.4%     -    0s
H    0     0                      37.0000000    0.74534  98.0%     -    0s
     0     0    0.74534    0  211   37.00000    0.74534  98.0%     -    0s
     0     0    0.74534    0  207   37.00000    0.74534  98.0%     -    0s
H    0     0                      36.0000000    0.74534  97.9%     -    0s
     0     2    0.75280    0  207   36.00000    0.75280  97.9%     -    0s
H   27    27                      27.0000000    1.00000  96.3%  56.6    0s
H   54    44                      20.0000000    1.00000  95.0%  31.9    0s
H   91    39                      18.0000000    1.14007  93.7%  30.3    0s
* 1008   228              25      17.0000000   10.05128  40.9%  31.1    1s
* 1551    93              19      16.0000000   11.06250  30.9%  30.7    2s

Explored 1798 nodes (54926 simplex iterations) in 2.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%