Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:31:55 2012 Optimize a model with 12689 rows, 18360 columns and 55753 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.20s Presolved: 12822 rows, 18358 columns, 73790 nonzeros Variable types: 0 continuous, 18358 integer (18358 binary) Found heuristic solution: objective 135.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 241 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 100 3.00000 2.00000 33.3% - 0s Explored 0 nodes (386 simplex iterations) in 0.28 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%