Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:00 2012 Optimize a model with 409 rows, 402 columns and 1422 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 409 rows, 384 columns, 1404 nonzeros Variable types: 0 continuous, 384 integer (383 binary) Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 217 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 0 171 84.00000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.39181 0 172 49.00000 0.39181 99.2% - 0s H 0 0 42.0000000 0.39181 99.1% - 0s 0 0 1.00000 0 175 42.00000 1.00000 97.6% - 0s H 0 0 30.0000000 1.00000 96.7% - 0s H 0 0 27.0000000 1.00000 96.3% - 0s 0 0 1.00000 0 175 27.00000 1.00000 96.3% - 0s 0 0 1.00000 0 171 27.00000 1.00000 96.3% - 0s H 0 0 25.0000000 1.00000 96.0% - 0s H 0 0 23.0000000 1.00000 95.7% - 0s H 0 0 21.0000000 1.00000 95.2% - 0s 0 2 1.00000 0 171 21.00000 1.00000 95.2% - 0s H 27 27 14.0000000 1.57880 88.7% 39.3 0s H 54 30 10.0000000 1.57880 84.2% 26.2 0s H 72 35 9.0000000 1.58152 82.4% 26.3 0s * 117 40 12 8.0000000 2.60806 67.4% 26.5 0s Cutting planes: Gomory: 3 Explored 305 nodes (9644 simplex iterations) in 0.37 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%