Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:18:12 2012 Optimize a model with 34027 rows, 35532 columns and 136674 nonzeros Presolve removed 776 rows and 4138 columns Presolve time: 0.88s Presolved: 33251 rows, 31394 columns, 130304 nonzeros Variable types: 0 continuous, 31394 integer (31394 binary) Found heuristic solution: objective 188.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 281 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 (281 simplex iterations) in 0.98 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%