Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:09:42 2012 Optimize a model with 2209 rows, 1190 columns and 7648 nonzeros Presolve removed 342 rows and 2 columns Presolve time: 0.10s Presolved: 1867 rows, 1188 columns, 6722 nonzeros Variable types: 0 continuous, 1188 integer (1188 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 3.000000e+00, 1530 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 72 34.00000 3.00000 91.2% - 0s H 0 0 20.0000000 3.00000 85.0% - 0s H 0 0 5.0000000 3.00000 40.0% - 0s * 0 0 0 3.0000000 3.00000 0.0% - 0s Cutting planes: Gomory: 4 Zero half: 5 Explored 0 nodes (5830 simplex iterations) in 0.41 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%