Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:08:22 2012 Optimize a model with 403 rows, 406 columns and 1411 nonzeros Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 403 rows, 376 columns, 1381 nonzeros Variable types: 0 continuous, 376 integer (375 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 226 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 0 163 71.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.21910 0 165 49.00000 0.21910 100% - 0s H 0 0 27.0000000 0.21910 99.2% - 0s 0 0 0.69215 0 171 27.00000 0.69215 97.4% - 0s 0 0 0.69384 0 170 27.00000 0.69384 97.4% - 0s 0 0 0.69420 0 173 27.00000 0.69420 97.4% - 0s 0 2 0.69591 0 173 27.00000 0.69591 97.4% - 0s * 22 18 13 8.0000000 1.00000 87.5% 32.5 0s * 39 16 13 7.0000000 1.00000 85.7% 31.0 0s Cutting planes: Gomory: 3 Mod-K: 2 Explored 133 nodes (4449 simplex iterations) in 0.26 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%