Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:12 2012 Optimize a model with 483 rows, 448 columns and 1653 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 483 rows, 424 columns, 1629 nonzeros Variable types: 0 continuous, 424 integer (423 binary) Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 219 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 0 180 84.00000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s 0 0 0.41325 0 181 66.00000 0.41325 99.4% - 0s H 0 0 65.0000000 0.41325 99.4% - 0s 0 0 1.00000 0 180 65.00000 1.00000 98.5% - 0s H 0 0 64.0000000 1.00000 98.4% - 0s H 0 0 61.0000000 1.00000 98.4% - 0s 0 0 1.00000 0 180 61.00000 1.00000 98.4% - 0s H 0 0 57.0000000 1.00000 98.2% - 0s 0 0 1.00000 0 180 57.00000 1.00000 98.2% - 0s H 0 0 55.0000000 1.00000 98.2% - 0s H 0 0 51.0000000 1.00000 98.0% - 0s H 0 0 47.0000000 1.00000 97.9% - 0s 0 2 1.00000 0 180 47.00000 1.00000 97.9% - 0s H 27 27 28.0000000 2.79879 90.0% 55.6 0s H 54 54 22.0000000 2.79879 87.3% 33.7 0s * 98 80 22 21.0000000 2.97114 85.9% 29.1 0s * 129 75 16 20.0000000 5.05921 74.7% 29.2 0s * 209 107 16 19.0000000 7.74118 59.3% 33.4 0s H 314 68 17.0000000 8.00000 52.9% 31.7 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 644 nodes (22101 simplex iterations) in 0.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%