Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:15:47 2012 Optimize a model with 447 rows, 434 columns and 1549 nonzeros Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 447 rows, 407 columns, 1522 nonzeros Variable types: 0 continuous, 407 integer (406 binary) Found heuristic solution: objective 87.0000000 Root relaxation: objective 0.000000e+00, 260 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 0 176 87.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.35238 0 179 59.00000 0.35238 99.4% - 0s H 0 0 56.0000000 0.35238 99.4% - 0s 0 0 0.82386 0 182 56.00000 0.82386 98.5% - 0s H 0 0 48.0000000 0.82386 98.3% - 0s H 0 0 44.0000000 0.82386 98.1% - 0s 0 0 0.82513 0 188 44.00000 0.82513 98.1% - 0s 0 0 0.82513 0 188 44.00000 0.82513 98.1% - 0s H 0 0 33.0000000 0.82513 97.5% - 0s 0 2 0.82546 0 185 33.00000 0.82546 97.5% - 0s H 54 38 16.0000000 2.00136 87.5% 24.1 0s * 77 43 14 15.0000000 2.03522 86.4% 26.5 0s * 125 54 20 14.0000000 4.00000 71.4% 25.1 0s * 186 49 13 13.0000000 6.33347 51.3% 26.7 0s H 246 16 11.0000000 7.39024 32.8% 25.4 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 273 nodes (7938 simplex iterations) in 0.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%