Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:00:15 2012 Optimize a model with 401 rows, 396 columns and 1396 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 401 rows, 373 columns, 1373 nonzeros Variable types: 0 continuous, 373 integer (372 binary) Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 210 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 0 156 81.00000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.32448 0 157 45.00000 0.32448 99.3% - 0s H 0 0 38.0000000 0.32448 99.1% - 0s 0 0 1.00000 0 160 38.00000 1.00000 97.4% - 0s H 0 0 26.0000000 1.00000 96.2% - 0s 0 0 1.00000 0 159 26.00000 1.00000 96.2% - 0s H 0 0 22.0000000 1.00000 95.5% - 0s 0 0 1.00000 0 161 22.00000 1.00000 95.5% - 0s 0 0 1.00000 0 157 22.00000 1.00000 95.5% - 0s H 0 0 21.0000000 1.00000 95.2% - 0s H 0 0 16.0000000 1.00000 93.8% - 0s 0 2 1.00000 0 157 16.00000 1.00000 93.8% - 0s H 27 18 9.0000000 1.00000 88.9% 31.0 0s * 130 7 20 8.0000000 6.48031 19.0% 32.2 0s Cutting planes: Gomory: 3 Explored 140 nodes (5344 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%