Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:54:28 2012 Optimize a model with 21441 rows, 22952 columns and 86521 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.44s Presolved: 21590 rows, 22950 columns, 109038 nonzeros Variable types: 0 continuous, 22950 integer (22950 binary) Found heuristic solution: objective 151.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 313 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 242 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (550 simplex iterations) in 0.57 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%