Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:10:14 2012 Optimize a model with 2379 rows, 1260 columns and 8223 nonzeros Presolve removed 597 rows and 2 columns Presolve time: 0.10s Presolved: 1817 rows, 1258 columns, 7981 nonzeros Variable types: 0 continuous, 1258 integer (1258 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 3.000000e+00, 1521 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 263 35.00000 3.00000 91.4% - 0s H 0 0 20.0000000 3.00000 85.0% - 0s H 0 0 12.0000000 3.00000 75.0% - 0s 0 0 3.00000 0 70 12.00000 3.00000 75.0% - 0s H 0 0 9.0000000 3.00000 66.7% - 0s H 0 0 4.0000000 3.00000 25.0% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 0 nodes (6813 simplex iterations) in 0.67 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%