Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:57:29 2012

Optimize a model with 275 rows, 192 columns and 877 nonzeros
Presolve time: 0.00s
Presolved: 275 rows, 192 columns, 877 nonzeros
Variable types: 0 continuous, 192 integer (192 binary)
Found heuristic solution: objective 64.0000000

Root relaxation: objective 0.000000e+00, 87 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   55   64.00000    0.00000   100%     -    0s
H    0     0                      49.0000000    0.00000   100%     -    0s
     0     0    0.84337    0   57   49.00000    0.84337  98.3%     -    0s
     0     0    0.85366    0   57   49.00000    0.85366  98.3%     -    0s
     0     0    0.86325    0   58   49.00000    0.86325  98.2%     -    0s
     0     0    0.87683    0   58   49.00000    0.87683  98.2%     -    0s
     0     0    1.01451    0   61   49.00000    1.01451  97.9%     -    0s
H    0     0                      46.0000000    1.01451  97.8%     -    0s
     0     0    1.03493    0   62   46.00000    1.03493  97.8%     -    0s
     0     0    1.03878    0   63   46.00000    1.03878  97.7%     -    0s
     0     2    1.04334    0   63   46.00000    1.04334  97.7%     -    0s
*   28    26              18      33.0000000    4.09091  87.6%  30.2    0s
*  415   167              14      32.0000000   16.18750  49.4%  21.8    0s
* 1382   185              24      31.0000000   20.85714  32.7%  20.4    0s

Explored 2612 nodes (47906 simplex iterations) in 1.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%