Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:51:53 2012 Optimize a model with 349 rows, 356 columns and 1226 nonzeros Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 349 rows, 328 columns, 1198 nonzeros Variable types: 0 continuous, 328 integer (327 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 230 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 0 138 56.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 0.26890 0 140 37.00000 0.26890 99.3% - 0s H 0 0 30.0000000 0.26890 99.1% - 0s 0 0 0.66667 0 142 30.00000 0.66667 97.8% - 0s H 0 0 23.0000000 0.66667 97.1% - 0s 0 0 0.66667 0 144 23.00000 0.66667 97.1% - 0s 0 0 0.66667 0 142 23.00000 0.66667 97.1% - 0s 0 2 0.66667 0 142 23.00000 0.66667 97.1% - 0s H 27 27 18.0000000 1.00000 94.4% 28.4 0s * 48 25 34 9.0000000 1.00000 88.9% 21.4 0s * 90 37 18 8.0000000 1.00000 87.5% 20.6 0s * 183 48 14 7.0000000 1.10847 84.2% 23.0 0s Cutting planes: Gomory: 3 Explored 330 nodes (8631 simplex iterations) in 0.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%