Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:07:06 2012 Optimize a model with 359 rows, 206 columns and 1101 nonzeros Presolve time: 0.00s Presolved: 359 rows, 206 columns, 1101 nonzeros Variable types: 0 continuous, 206 integer (206 binary) Found heuristic solution: objective 92.0000000 Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 57 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 27 91.00000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 0 0.59829 0 29 84.00000 0.59829 99.3% - 0s 0 0 0.75783 0 29 84.00000 0.75783 99.1% - 0s 0 0 0.77778 0 29 84.00000 0.77778 99.1% - 0s 0 0 0.77778 0 29 84.00000 0.77778 99.1% - 0s 0 0 0.77778 0 29 84.00000 0.77778 99.1% - 0s 0 0 0.77778 0 29 84.00000 0.77778 99.1% - 0s H 0 0 83.0000000 0.77778 99.1% - 0s 0 2 0.85366 0 29 83.00000 0.85366 99.0% - 0s H 11 11 82.0000000 5.34904 93.5% 47.5 0s * 235 153 20 78.0000000 19.18462 75.4% 34.7 0s * 250 149 19 76.0000000 19.18462 74.8% 33.0 0s * 597 290 16 75.0000000 32.76923 56.3% 29.3 0s * 1627 345 27 73.0000000 38.00000 47.9% 26.7 1s * 1726 359 30 72.0000000 39.00000 45.8% 26.6 1s * 2538 489 27 70.0000000 43.66667 37.6% 25.4 2s 6599 475 68.40000 25 114 70.00000 55.94118 20.1% 23.3 5s Cutting planes: Gomory: 1 Zero half: 5 Explored 8884 nodes (195167 simplex iterations) in 6.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+01, best bound 7.000000000000e+01, gap 0.0%