Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:14 2012 Optimize a model with 930 rows, 992 columns and 3658 nonzeros Presolve removed 5 rows and 155 columns Presolve time: 0.02s Presolved: 925 rows, 837 columns, 3503 nonzeros Variable types: 0 continuous, 837 integer (837 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 2.000000e+00, 807 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 46 13.00000 2.00000 84.6% - 0s H 0 0 3.0000000 2.00000 33.3% - 0s 0 0 2.00000 0 75 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 73 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 46 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 75 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 2 2.00000 0 78 3.00000 2.00000 33.3% - 0s Cutting planes: Gomory: 5 Zero half: 2 Explored 12 nodes (28105 simplex iterations) in 1.57 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%