Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:45:16 2012 Optimize a model with 46397 rows, 43890 columns and 182037 nonzeros Presolve removed 1256 rows and 2 columns Presolve time: 1.17s Presolved: 45350 rows, 43888 columns, 222151 nonzeros Variable types: 0 continuous, 43888 integer (43888 binary) Found heuristic solution: objective 209.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 356 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 (356 simplex iterations) in 1.33 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%