Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:52 2012 Optimize a model with 321 rows, 328 columns and 1128 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 321 rows, 305 columns, 1105 nonzeros Variable types: 0 continuous, 305 integer (304 binary) Found heuristic solution: objective 62.0000000 Root relaxation: objective 0.000000e+00, 194 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 0 137 62.00000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.33715 0 138 32.00000 0.33715 98.9% - 0s H 0 0 27.0000000 0.33715 98.8% - 0s 0 0 1.00000 0 142 27.00000 1.00000 96.3% - 0s H 0 0 21.0000000 1.00000 95.2% - 0s 0 0 1.00000 0 140 21.00000 1.00000 95.2% - 0s H 0 0 17.0000000 1.00000 94.1% - 0s 0 0 1.00000 0 141 17.00000 1.00000 94.1% - 0s 0 0 1.00000 0 127 17.00000 1.00000 94.1% - 0s H 0 0 16.0000000 1.00000 93.7% - 0s H 0 0 11.0000000 1.00000 90.9% - 0s 0 2 1.00000 0 127 11.00000 1.00000 90.9% - 0s H 18 18 9.0000000 1.00000 88.9% 50.6 0s H 54 18 6.0000000 1.00000 83.3% 29.8 0s Cutting planes: Gomory: 3 Mod-K: 2 Explored 277 nodes (8821 simplex iterations) in 0.29 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%