Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:20:44 2012 Optimize a model with 11135 rows, 16512 columns and 49278 nonzeros Presolve removed 290 rows and 4098 columns Presolve time: 0.25s Presolved: 10845 rows, 12414 columns, 44372 nonzeros Variable types: 0 continuous, 12414 integer (12414 binary) Found heuristic solution: objective 128.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 160 iterations, 0.00 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% - 0s Explored 0 nodes (160 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%