Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:44 2012 Optimize a model with 407 rows, 402 columns and 1417 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 407 rows, 379 columns, 1394 nonzeros Variable types: 0 continuous, 379 integer (378 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 245 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 163 71.00000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 52.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.37701 0 164 48.00000 0.37701 99.2% - 0s H 0 0 41.0000000 0.37701 99.1% - 0s 0 0 1.00000 0 172 41.00000 1.00000 97.6% - 0s H 0 0 35.0000000 1.00000 97.1% - 0s H 0 0 32.0000000 1.00000 96.9% - 0s 0 0 1.00000 0 171 32.00000 1.00000 96.9% - 0s H 0 0 28.0000000 1.00000 96.4% - 0s 0 0 1.00000 0 171 28.00000 1.00000 96.4% - 0s 0 0 1.00000 0 166 28.00000 1.00000 96.4% - 0s H 0 0 26.0000000 1.00000 96.2% - 0s 0 2 1.00000 0 166 26.00000 1.00000 96.2% - 0s H 27 27 14.0000000 1.00000 92.9% 33.9 0s H 54 34 11.0000000 1.00000 90.9% 21.4 0s H 81 27 8.0000000 1.00000 87.5% 20.8 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 179 nodes (6581 simplex iterations) in 0.32 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%