Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:55:53 2012 Optimize a model with 12080 rows, 6480 columns and 42400 nonzeros Presolve removed 1602 rows and 160 columns Presolve time: 0.23s Presolved: 10478 rows, 6320 columns, 38320 nonzeros Variable types: 0 continuous, 6320 integer (6320 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 3.000000e+00, 10026 iterations, 1.16 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% - 3s Explored 0 nodes (26181 simplex iterations) in 3.64 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%