Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:05 2012 Optimize a model with 85 rows, 82 columns and 292 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 85 rows, 79 columns, 289 nonzeros Variable types: 0 continuous, 79 integer (78 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 0.000000e+00, 45 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 34 15.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.26667 0 36 10.00000 0.26667 97.3% - 0s H 0 0 8.0000000 0.26667 96.7% - 0s 0 0 0.87470 0 40 8.00000 0.87470 89.1% - 0s 0 0 0.88500 0 41 8.00000 0.88500 88.9% - 0s H 0 0 7.0000000 0.88500 87.4% - 0s 0 2 0.88789 0 41 7.00000 0.88789 87.3% - 0s * 9 6 8 5.0000000 1.84199 63.2% 12.1 0s * 20 3 5 4.0000000 1.98595 50.4% 11.1 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 24 nodes (471 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%