Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:51:52 2012 Optimize a model with 369 rows, 366 columns and 1286 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 369 rows, 343 columns, 1263 nonzeros Variable types: 0 continuous, 343 integer (342 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 196 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 0 142 71.00000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.22633 0 144 49.00000 0.22633 100% - 0s H 0 0 42.0000000 0.22633 99.5% - 0s H 0 0 33.0000000 0.22633 99.3% - 0s 0 0 0.77491 0 151 33.00000 0.77491 97.7% - 0s H 0 0 21.0000000 0.77491 96.3% - 0s 0 0 0.77517 0 154 21.00000 0.77517 96.3% - 0s 0 0 0.77517 0 150 21.00000 0.77517 96.3% - 0s H 0 0 13.0000000 0.77517 94.0% - 0s 0 2 1.00000 0 150 13.00000 1.00000 92.3% - 0s H 27 27 11.0000000 1.00000 90.9% 23.5 0s H 54 25 9.0000000 1.00000 88.9% 18.7 0s * 80 31 15 8.0000000 1.00000 87.5% 21.9 0s Cutting planes: Gomory: 4 Zero half: 3 Explored 498 nodes (11804 simplex iterations) in 0.42 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%