Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:02:48 2012 Optimize a model with 337 rows, 194 columns and 1034 nonzeros Presolve time: 0.00s Presolved: 337 rows, 194 columns, 1034 nonzeros Variable types: 0 continuous, 194 integer (194 binary) Found heuristic solution: objective 88.0000000 Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 53 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 26 85.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s 0 0 1.17442 0 43 77.00000 1.17442 98.5% - 0s 0 0 1.18750 0 28 77.00000 1.18750 98.5% - 0s 0 0 1.31250 0 28 77.00000 1.31250 98.3% - 0s 0 0 1.31250 0 28 77.00000 1.31250 98.3% - 0s H 0 0 75.0000000 1.31250 98.2% - 0s 0 0 1.31250 0 28 75.00000 1.31250 98.2% - 0s 0 0 1.31250 0 28 75.00000 1.31250 98.2% - 0s H 0 0 72.0000000 1.31250 98.2% - 0s 0 2 1.41406 0 28 72.00000 1.41406 98.0% - 0s * 176 112 14 71.0000000 21.00000 70.4% 34.6 0s * 196 119 15 70.0000000 23.12500 67.0% 33.1 0s * 199 116 14 69.0000000 23.12500 66.5% 32.8 0s * 489 223 16 68.0000000 35.52941 47.8% 27.6 0s * 895 264 27 67.0000000 37.23077 44.4% 27.4 0s * 1224 200 28 65.0000000 37.65625 42.1% 26.7 1s Cutting planes: Gomory: 1 Zero half: 3 Explored 4523 nodes (100647 simplex iterations) in 3.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.500000000000e+01, best bound 6.500000000000e+01, gap 0.0%