Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:12:35 2012 Optimize a model with 49645 rows, 42642 columns and 190548 nonzeros Presolve removed 435 rows and 4328 columns Presolve time: 1.30s Presolved: 49210 rows, 38314 columns, 184714 nonzeros Variable types: 0 continuous, 38314 integer (38314 binary) Found heuristic solution: objective 206.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 339 iterations, 0.03 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% - 1s Explored 0 nodes (339 simplex iterations) in 1.45 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%