Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:17:53 2012 Optimize a model with 25199 rows, 28392 columns and 103150 nonzeros Presolve removed 29 rows and 4538 columns Presolve time: 0.54s Presolved: 25170 rows, 23854 columns, 98314 nonzeros Variable types: 0 continuous, 23854 integer (23854 binary) Found heuristic solution: objective 168.0000000 Root relaxation: objective 2.000000e+00, 17654 iterations, 1.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 266 168.00000 2.00000 98.8% - 3s H 0 0 3.0000000 2.00000 33.3% - 3s 0 0 infeasible 0 3.00000 2.00000 33.3% - 3s Cutting planes: Gomory: 1 Zero half: 4 Explored 0 nodes (54436 simplex iterations) in 3.49 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%