Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:28 2012 Optimize a model with 77 rows, 52 columns and 242 nonzeros Presolve time: 0.00s Presolved: 77 rows, 52 columns, 242 nonzeros Variable types: 0 continuous, 52 integer (52 binary) Found heuristic solution: objective 22.0000000 Found heuristic solution: objective 16.0000000 Root relaxation: objective 0.000000e+00, 23 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 14 16.00000 0.00000 100% - 0s 0 0 0.80000 0 16 16.00000 0.80000 95.0% - 0s 0 0 1.10000 0 16 16.00000 1.10000 93.1% - 0s 0 0 1.20000 0 17 16.00000 1.20000 92.5% - 0s 0 0 1.20000 0 16 16.00000 1.20000 92.5% - 0s 0 0 1.25000 0 18 16.00000 1.25000 92.2% - 0s 0 0 1.30000 0 17 16.00000 1.30000 91.9% - 0s 0 0 1.37500 0 20 16.00000 1.37500 91.4% - 0s 0 0 1.40000 0 18 16.00000 1.40000 91.3% - 0s 0 0 1.44286 0 23 16.00000 1.44286 91.0% - 0s 0 0 1.52836 0 28 16.00000 1.52836 90.4% - 0s 0 0 1.60000 0 17 16.00000 1.60000 90.0% - 0s 0 0 1.60000 0 17 16.00000 1.60000 90.0% - 0s 0 2 1.60000 0 17 16.00000 1.60000 90.0% - 0s * 11 11 7 15.0000000 4.01667 73.2% 18.8 0s * 13 8 5 14.0000000 4.01667 71.3% 16.5 0s * 22 9 5 13.0000000 4.28000 67.1% 15.1 0s Cutting planes: Gomory: 1 Zero half: 10 Explored 56 nodes (715 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%