Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:48:50 2012 Optimize a model with 11929 rows, 6320 columns and 41791 nonzeros Presolve removed 1423 rows and 79 columns Presolve time: 0.24s Presolved: 10506 rows, 6241 columns, 38236 nonzeros Variable types: 0 continuous, 6241 integer (6241 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 3.000000e+00, 11081 iterations, 1.65 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% - 4s Explored 0 nodes (30820 simplex iterations) in 4.70 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%