Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:03:10 2012 Optimize a model with 13167 rows, 17822 columns and 56791 nonzeros Presolve removed 292 rows and 3458 columns Presolve time: 0.26s Presolved: 12875 rows, 14364 columns, 52668 nonzeros Variable types: 0 continuous, 14364 integer (14364 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 3.000000e+00, 16108 iterations, 1.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 2s Explored 0 nodes (24006 simplex iterations) in 2.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%