Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:45 2012 Optimize a model with 321 rows, 323 columns and 1123 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 321 rows, 300 columns, 1100 nonzeros Variable types: 0 continuous, 300 integer (299 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 187 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 0 133 56.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s 0 0 0.29842 0 136 44.00000 0.29842 99.3% - 0s H 0 0 31.0000000 0.29842 99.0% - 0s 0 0 0.82520 0 137 31.00000 0.82520 97.3% - 0s H 0 0 19.0000000 0.82520 95.7% - 0s H 0 0 14.0000000 0.82520 94.1% - 0s 0 0 0.82520 0 137 14.00000 0.82520 94.1% - 0s H 0 0 13.0000000 0.82520 93.7% - 0s 0 2 0.82533 0 137 13.00000 0.82533 93.7% - 0s H 27 27 9.0000000 1.00000 88.9% 27.6 0s * 34 24 21 8.0000000 1.00000 87.5% 26.5 0s * 125 58 14 7.0000000 1.64298 76.5% 28.4 0s Cutting planes: Gomory: 4 Zero half: 6 Explored 322 nodes (9112 simplex iterations) in 0.31 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%