Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:43:41 2012 Optimize a model with 11904 rows, 15500 columns and 50716 nonzeros Presolve removed 397 rows and 3100 columns Presolve time: 0.23s Presolved: 11507 rows, 12400 columns, 46748 nonzeros Variable types: 0 continuous, 12400 integer (12400 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 3.000000e+00, 12362 iterations, 0.70 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% - 1s Explored 0 nodes (18915 simplex iterations) in 1.78 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%