Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:00:20 2012 Optimize a model with 20435 rows, 24492 columns and 85018 nonzeros Presolve removed 314 rows and 2 columns Presolve time: 0.45s Presolved: 20277 rows, 24490 columns, 108316 nonzeros Variable types: 0 continuous, 24490 integer (24490 binary) Found heuristic solution: objective 156.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 245 iterations, 0.01 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 (245 simplex iterations) in 0.51 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%