Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:22 2012 Optimize a model with 323 rows, 334 columns and 1139 nonzeros Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 323 rows, 307 columns, 1112 nonzeros Variable types: 0 continuous, 307 integer (306 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 195 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 0 135 51.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.23845 0 137 38.00000 0.23845 99.4% - 0s H 0 0 24.0000000 0.23845 99.0% - 0s 0 0 0.79455 0 139 24.00000 0.79455 96.7% - 0s H 0 0 12.0000000 0.79455 93.4% - 0s 0 0 0.79455 0 139 12.00000 0.79455 93.4% - 0s H 0 0 11.0000000 0.79455 92.8% - 0s 0 2 0.94055 0 139 11.00000 0.94055 91.4% - 0s H 27 15 7.0000000 1.32151 81.1% 19.0 0s Cutting planes: Gomory: 4 Explored 102 nodes (3160 simplex iterations) in 0.15 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%