Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:24 2012 Optimize a model with 351 rows, 360 columns and 1235 nonzeros Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 351 rows, 331 columns, 1206 nonzeros Variable types: 0 continuous, 331 integer (330 binary) Found heuristic solution: objective 59.0000000 Root relaxation: objective 0.000000e+00, 209 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 59.00000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.23670 0 136 35.00000 0.23670 99.3% - 0s H 0 0 34.0000000 0.23670 99.3% - 0s 0 0 1.00000 0 140 34.00000 1.00000 97.1% - 0s 0 0 1.00000 0 141 34.00000 1.00000 97.1% - 0s 0 0 1.00000 0 140 34.00000 1.00000 97.1% - 0s H 0 0 30.0000000 1.00000 96.7% - 0s H 0 0 29.0000000 1.00000 96.6% - 0s 0 2 1.00000 0 140 29.00000 1.00000 96.6% - 0s H 17 15 9.0000000 1.00000 88.9% 55.6 0s * 95 49 11 8.0000000 1.00000 87.5% 40.3 0s * 156 50 23 7.0000000 1.14718 83.6% 36.8 0s Cutting planes: Gomory: 3 Zero half: 2 Mod-K: 3 Explored 406 nodes (13198 simplex iterations) in 0.45 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%