Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:04:32 2012 Optimize a model with 35143 rows, 34040 columns and 138550 nonzeros Presolve removed 758 rows and 3682 columns Presolve time: 0.85s Presolved: 34385 rows, 30358 columns, 132656 nonzeros Variable types: 0 continuous, 30358 integer (30358 binary) Found heuristic solution: objective 184.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 300 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 (300 simplex iterations) in 0.96 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%