Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:13:19 2012 Optimize a model with 2443 rows, 2256 columns and 9351 nonzeros Presolve removed 291 rows and 331 columns Presolve time: 0.11s Presolved: 2152 rows, 1925 columns, 8225 nonzeros Variable types: 0 continuous, 1925 integer (1925 binary) Found heuristic solution: objective 47.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 68 iterations, 0.00 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 (68 simplex iterations) in 0.11 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%