Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:41:25 2012 Optimize a model with 34353 rows, 37442 columns and 139537 nonzeros Presolve removed 420 rows and 6178 columns Presolve time: 0.82s Presolved: 33933 rows, 31264 columns, 132044 nonzeros Variable types: 0 continuous, 31264 integer (31264 binary) Found heuristic solution: objective 193.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 273 iterations, 0.02 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 (273 simplex iterations) in 0.92 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%