Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:15:55 2012 Optimize a model with 40794 rows, 39800 columns and 161188 nonzeros Presolve removed 822 rows and 4778 columns Presolve time: 1.03s Presolved: 39972 rows, 35022 columns, 154020 nonzeros Variable types: 0 continuous, 35022 integer (35022 binary) Found heuristic solution: objective 199.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 332 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% - 1s Explored 0 nodes (332 simplex iterations) in 1.16 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%