Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:11:24 2012

Optimize a model with 535 rows, 502 columns and 1837 nonzeros
Presolve removed 0 rows and 24 columns
Presolve time: 0.00s
Presolved: 535 rows, 478 columns, 1813 nonzeros
Variable types: 0 continuous, 478 integer (477 binary)
Found heuristic solution: objective 102.0000000

Root relaxation: objective 0.000000e+00, 276 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  208  102.00000    0.00000   100%     -    0s
H    0     0                      61.0000000    0.00000   100%     -    0s
     0     0    0.43750    0  209   61.00000    0.43750  99.3%     -    0s
H    0     0                      50.0000000    0.43750  99.1%     -    0s
     0     0    1.00000    0  210   50.00000    1.00000  98.0%     -    0s
H    0     0                      30.0000000    1.00000  96.7%     -    0s
     0     0    1.00000    0  213   30.00000    1.00000  96.7%     -    0s
     0     0    1.00000    0  212   30.00000    1.00000  96.7%     -    0s
H    0     0                      29.0000000    1.00000  96.6%     -    0s
     0     2    1.00000    0  211   29.00000    1.00000  96.6%     -    0s
*   93    91              58      21.0000000    1.00000  95.2%  29.6    0s
H  108    40                      19.0000000    1.00000  94.7%  27.9    0s
H  302   158                      18.0000000    3.00676  83.3%  34.1    0s
*  394   174              19      17.0000000    4.62042  72.8%  31.3    0s

Explored 3305 nodes (83344 simplex iterations) in 4.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%