Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:48:52 2012 Optimize a model with 65887 rows, 54056 columns and 250558 nonzeros Presolve removed 489 rows and 5338 columns Presolve time: 4.84s Presolved: 65398 rows, 48718 columns, 243498 nonzeros Variable types: 0 continuous, 48718 integer (48718 binary) Found heuristic solution: objective 232.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 370 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 infeasible 0 3.00000 2.00000 33.3% - 5s Explored 0 nodes (370 simplex iterations) in 5.04 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%