Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:02:54 2012 Optimize a model with 347 rows, 199 columns and 1064 nonzeros Presolve time: 0.00s Presolved: 347 rows, 199 columns, 1064 nonzeros Variable types: 0 continuous, 199 integer (199 binary) Found heuristic solution: objective 87.0000000 Root relaxation: objective 0.000000e+00, 58 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 87.00000 0.00000 100% - 0s H 0 0 83.0000000 0.00000 100% - 0s H 0 0 81.0000000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s 0 0 0.89044 0 40 80.00000 0.89044 98.9% - 0s 0 0 0.96154 0 28 80.00000 0.96154 98.8% - 0s 0 0 1.00000 0 28 80.00000 1.00000 98.8% - 0s 0 0 1.00000 0 28 80.00000 1.00000 98.8% - 0s 0 0 1.00000 0 28 80.00000 1.00000 98.8% - 0s 0 0 1.00000 0 28 80.00000 1.00000 98.8% - 0s 0 2 1.00000 0 28 80.00000 1.00000 98.8% - 0s H 166 102 79.0000000 20.40000 74.2% 32.4 0s * 200 124 16 78.0000000 20.40000 73.8% 32.1 0s * 251 139 16 77.0000000 20.57895 73.3% 30.0 0s * 258 137 18 75.0000000 20.57895 72.6% 29.4 0s * 387 199 16 74.0000000 25.82353 65.1% 28.5 0s * 546 256 17 73.0000000 30.36364 58.4% 27.4 0s * 550 245 16 72.0000000 30.36364 57.8% 27.2 0s * 638 273 15 71.0000000 32.69231 54.0% 26.9 0s H 2833 469 68.0000000 44.66667 34.3% 23.9 2s 7407 301 61.25000 22 108 68.00000 57.00000 16.2% 21.4 5s Cutting planes: Gomory: 1 Zero half: 3 Explored 8400 nodes (175566 simplex iterations) in 5.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0%