Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:16 2012 Optimize a model with 239 rows, 186 columns and 781 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 239 rows, 185 columns, 780 nonzeros Variable types: 0 continuous, 185 integer (184 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 88 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 65 46.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.40722 0 67 34.00000 0.40722 98.8% - 0s H 0 0 33.0000000 0.40722 98.8% - 0s 0 0 0.88237 0 71 33.00000 0.88237 97.3% - 0s 0 0 0.89232 0 71 33.00000 0.89232 97.3% - 0s 0 0 0.89232 0 71 33.00000 0.89232 97.3% - 0s 0 2 0.91804 0 71 33.00000 0.91804 97.2% - 0s * 25 24 17 23.0000000 2.93437 87.2% 29.1 0s H 56 39 22.0000000 7.11897 67.6% 26.1 0s * 318 95 13 21.0000000 11.71429 44.2% 18.9 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 836 nodes (13845 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%