Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:22 2012 Optimize a model with 339 rows, 352 columns and 1197 nonzeros Presolve removed 0 rows and 37 columns Presolve time: 0.00s Presolved: 339 rows, 315 columns, 1160 nonzeros Variable types: 0 continuous, 315 integer (314 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 190 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 0 127 45.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 0 0.18947 0 129 30.00000 0.18947 99.4% - 0s H 0 0 23.0000000 0.18947 99.2% - 0s 0 0 0.78937 0 133 23.00000 0.78937 96.6% - 0s H 0 0 16.0000000 0.78937 95.1% - 0s 0 0 0.79043 0 136 16.00000 0.79043 95.1% - 0s 0 0 0.79043 0 135 16.00000 0.79043 95.1% - 0s 0 2 0.79096 0 134 16.00000 0.79096 95.1% - 0s H 40 38 10.0000000 0.92781 90.7% 20.1 0s * 59 20 45 9.0000000 0.92781 89.7% 16.6 0s * 79 18 17 8.0000000 0.93400 88.3% 17.5 0s Cutting planes: Gomory: 4 Zero half: 2 Mod-K: 2 Explored 414 nodes (10617 simplex iterations) in 0.39 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%