Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:43:59 2012 Optimize a model with 15911 rows, 18632 columns and 65686 nonzeros Presolve removed 546 rows and 2 columns Presolve time: 0.30s Presolved: 15501 rows, 18630 columns, 82596 nonzeros Variable types: 0 continuous, 18630 integer (18630 binary) Found heuristic solution: objective 136.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 207 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 (207 simplex iterations) in 0.35 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%