Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:31:56 2012 Optimize a model with 333 rows, 243 columns and 1073 nonzeros Presolve time: 0.00s Presolved: 333 rows, 243 columns, 1073 nonzeros Variable types: 0 continuous, 243 integer (243 binary) Found heuristic solution: objective 73.0000000 Root relaxation: objective 0.000000e+00, 111 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 76 73.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 52.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.56061 0 77 48.00000 0.56061 98.8% - 0s 0 0 0.70022 0 79 48.00000 0.70022 98.5% - 0s 0 0 0.70022 0 79 48.00000 0.70022 98.5% - 0s 0 0 0.70022 0 79 48.00000 0.70022 98.5% - 0s H 0 0 44.0000000 0.70022 98.4% - 0s 0 2 0.72821 0 79 44.00000 0.72821 98.3% - 0s * 43 39 27 37.0000000 3.73737 89.9% 27.7 0s * 88 70 31 35.0000000 3.74936 89.3% 23.4 0s * 90 62 32 34.0000000 3.74936 89.0% 23.0 0s * 572 294 15 33.0000000 12.43750 62.3% 21.6 0s H 980 370 31.0000000 14.40000 53.5% 22.0 1s * 1720 240 24 30.0000000 18.75000 37.5% 21.1 1s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 1 Explored 3698 nodes (72688 simplex iterations) in 3.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%