Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:45:16 2012 Optimize a model with 213 rows, 152 columns and 682 nonzeros Presolve time: 0.00s Presolved: 213 rows, 152 columns, 682 nonzeros Variable types: 0 continuous, 152 integer (152 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 66 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 45 51.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.67190 0 47 38.00000 0.67190 98.2% - 0s 0 0 0.70588 0 48 38.00000 0.70588 98.1% - 0s 0 0 0.80490 0 48 38.00000 0.80490 97.9% - 0s 0 0 0.80952 0 49 38.00000 0.80952 97.9% - 0s 0 0 0.80952 0 49 38.00000 0.80952 97.9% - 0s 0 2 0.87425 0 49 38.00000 0.87425 97.7% - 0s * 30 30 19 32.0000000 4.18414 86.9% 22.1 0s * 105 65 13 28.0000000 6.72941 76.0% 22.6 0s * 142 87 12 27.0000000 10.65954 60.5% 23.6 0s H 332 128 26.0000000 14.50000 44.2% 20.6 0s * 485 121 11 25.0000000 16.72222 33.1% 18.8 0s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 2 Explored 1024 nodes (16597 simplex iterations) in 0.45 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%