Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:44:52 2012 Optimize a model with 319 rows, 240 columns and 1035 nonzeros Presolve time: 0.00s Presolved: 319 rows, 240 columns, 1035 nonzeros Variable types: 0 continuous, 240 integer (240 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 107 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 80 63.00000 0.00000 100% - 0s H 0 0 52.0000000 0.00000 100% - 0s 0 0 0.54167 0 81 52.00000 0.54167 99.0% - 0s H 0 0 51.0000000 0.54167 98.9% - 0s 0 0 0.60430 0 84 51.00000 0.60430 98.8% - 0s H 0 0 49.0000000 0.60430 98.8% - 0s 0 0 0.63641 0 87 49.00000 0.63641 98.7% - 0s H 0 0 47.0000000 0.63641 98.6% - 0s H 0 0 45.0000000 0.63641 98.6% - 0s H 0 0 43.0000000 0.63641 98.5% - 0s H 0 0 37.0000000 0.63641 98.3% - 0s 0 2 0.66453 0 87 37.00000 0.66453 98.2% - 0s H 27 27 32.0000000 3.01709 90.6% 35.3 0s * 37 29 23 28.0000000 3.01709 89.2% 29.9 0s * 174 100 19 27.0000000 10.00000 63.0% 28.2 0s * 393 110 10 26.0000000 13.53623 47.9% 26.3 0s * 572 98 11 25.0000000 16.26829 34.9% 26.1 0s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 2 Explored 853 nodes (20853 simplex iterations) in 0.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%