Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:54 2012 Optimize a model with 311 rows, 316 columns and 1091 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 311 rows, 297 columns, 1072 nonzeros Variable types: 0 continuous, 297 integer (296 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 0.000000e+00, 190 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 0 124 54.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.29957 0 126 35.00000 0.29957 99.1% - 0s H 0 0 32.0000000 0.29957 99.1% - 0s 0 0 0.85815 0 129 32.00000 0.85815 97.3% - 0s H 0 0 21.0000000 0.85815 95.9% - 0s H 0 0 16.0000000 0.85815 94.6% - 0s 0 0 0.85858 0 134 16.00000 0.85858 94.6% - 0s 0 0 0.85858 0 131 16.00000 0.85858 94.6% - 0s H 0 0 14.0000000 0.85858 93.9% - 0s 0 2 0.85895 0 131 14.00000 0.85895 93.9% - 0s H 32 18 7.0000000 1.00000 85.7% 29.3 0s * 204 18 14 6.0000000 3.10646 48.2% 29.3 0s Cutting planes: Gomory: 3 Zero half: 1 Mod-K: 1 Explored 229 nodes (7055 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%