Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:20:34 2012 Optimize a model with 26025 rows, 28730 columns and 105961 nonzeros Presolve removed 27 rows and 4227 columns Presolve time: 0.57s Presolved: 25998 rows, 24503 columns, 101428 nonzeros Variable types: 0 continuous, 24503 integer (24503 binary) Found heuristic solution: objective 169.0000000 Root relaxation: objective 2.000000e+00, 17601 iterations, 1.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 242 169.00000 2.00000 98.8% - 3s H 0 0 158.0000000 2.00000 98.7% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s 0 0 2.20000 0 505 4.00000 2.20000 45.0% - 6s H 0 0 3.0000000 2.20000 26.7% - 6s Cutting planes: Gomory: 1 Zero half: 3 Explored 0 nodes (65732 simplex iterations) in 6.94 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%