Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:08:21 2012 Optimize a model with 473 rows, 441 columns and 1621 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 473 rows, 426 columns, 1606 nonzeros Variable types: 0 continuous, 426 integer (425 binary) Found heuristic solution: objective 80.0000000 Root relaxation: objective 0.000000e+00, 259 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 0 181 80.00000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.45727 0 184 64.00000 0.45727 99.3% - 0s H 0 0 55.0000000 0.45727 99.2% - 0s 0 0 0.78717 0 186 55.00000 0.78717 98.6% - 0s H 0 0 38.0000000 0.78717 97.9% - 0s 0 0 0.78717 0 186 38.00000 0.78717 97.9% - 0s H 0 0 35.0000000 0.78717 97.8% - 0s H 0 0 26.0000000 0.78717 97.0% - 0s H 0 0 25.0000000 0.78717 96.9% - 0s 0 2 0.78984 0 186 25.00000 0.78984 96.8% - 0s * 68 47 44 16.0000000 0.88428 94.5% 19.3 0s H 99 52 15.0000000 1.00000 93.3% 22.0 0s * 188 84 20 14.0000000 3.00885 78.5% 30.1 0s * 261 84 11 13.0000000 3.27027 74.8% 31.6 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 666 nodes (23136 simplex iterations) in 0.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%