Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012 Optimize a model with 93 rows, 87 columns and 317 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 93 rows, 84 columns, 314 nonzeros Variable types: 0 continuous, 84 integer (83 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 0.000000e+00, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 35 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.37500 0 38 13.00000 0.37500 97.1% - 0s H 0 0 12.0000000 0.37500 96.9% - 0s H 0 0 9.0000000 0.37500 95.8% - 0s 0 0 0.86118 0 40 9.00000 0.86118 90.4% - 0s 0 0 0.86162 0 41 9.00000 0.86162 90.4% - 0s 0 0 0.86162 0 41 9.00000 0.86162 90.4% - 0s 0 2 0.86719 0 41 9.00000 0.86719 90.4% - 0s * 11 5 8 4.0000000 1.66926 58.3% 17.1 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 20 nodes (435 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%