Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:00 2012 Optimize a model with 337 rows, 346 columns and 1186 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 337 rows, 321 columns, 1161 nonzeros Variable types: 0 continuous, 321 integer (320 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 0.000000e+00, 201 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 0 144 66.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s 0 0 0.30222 0 147 46.00000 0.30222 99.3% - 0s H 0 0 34.0000000 0.30222 99.1% - 0s 0 0 0.76456 0 148 34.00000 0.76456 97.8% - 0s H 0 0 26.0000000 0.76456 97.1% - 0s H 0 0 21.0000000 0.76456 96.4% - 0s 0 0 0.76456 0 148 21.00000 0.76456 96.4% - 0s H 0 0 20.0000000 0.76456 96.2% - 0s H 0 0 18.0000000 0.76456 95.8% - 0s H 0 0 15.0000000 0.76456 94.9% - 0s 0 2 0.76996 0 148 15.00000 0.76996 94.9% - 0s H 27 16 6.0000000 2.71605 54.7% 22.6 0s Cutting planes: Gomory: 3 Explored 66 nodes (1861 simplex iterations) in 0.12 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%