Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:56:59 2012

Optimize a model with 509 rows, 478 columns and 1748 nonzeros
Presolve removed 0 rows and 15 columns
Presolve time: 0.00s
Presolved: 509 rows, 463 columns, 1733 nonzeros
Variable types: 0 continuous, 463 integer (462 binary)
Found heuristic solution: objective 100.0000000

Root relaxation: objective 0.000000e+00, 283 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  198  100.00000    0.00000   100%     -    0s
H    0     0                      75.0000000    0.00000   100%     -    0s
H    0     0                      66.0000000    0.00000   100%     -    0s
     0     0    0.50339    0  199   66.00000    0.50339  99.2%     -    0s
H    0     0                      48.0000000    0.50339  99.0%     -    0s
     0     0    1.11413    0  203   48.00000    1.11413  97.7%     -    0s
H    0     0                      47.0000000    1.11413  97.6%     -    0s
H    0     0                      44.0000000    1.11413  97.5%     -    0s
     0     0    1.11488    0  205   44.00000    1.11488  97.5%     -    0s
     0     0    1.11488    0  205   44.00000    1.11488  97.5%     -    0s
     0     2    1.11489    0  205   44.00000    1.11489  97.5%     -    0s
H   27    27                      26.0000000    1.14772  95.6%  62.4    0s
*   53    37              34      18.0000000    1.14772  93.6%  37.8    0s
*  339   203              15      17.0000000    1.29930  92.4%  34.4    0s
*  736   303              22      15.0000000    5.70213  62.0%  37.1    1s

Explored 1178 nodes (42338 simplex iterations) in 1.99 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%