Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:56:09 2012 Optimize a model with 43859 rows, 41820 columns and 172378 nonzeros Presolve removed 848 rows and 6122 columns Presolve time: 1.19s Presolved: 43011 rows, 35698 columns, 163796 nonzeros Variable types: 0 continuous, 35698 integer (35698 binary) Found heuristic solution: objective 204.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 325 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 (325 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%