Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:15 2012 Optimize a model with 301 rows, 305 columns and 1055 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 301 rows, 282 columns, 1032 nonzeros Variable types: 0 continuous, 282 integer (281 binary) Found heuristic solution: objective 57.0000000 Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 184 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 0 125 56.00000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.38400 0 126 39.00000 0.38400 99.0% - 0s H 0 0 28.0000000 0.38400 98.6% - 0s H 0 0 21.0000000 0.38400 98.2% - 0s 0 0 1.00000 0 127 21.00000 1.00000 95.2% - 0s H 0 0 18.0000000 1.00000 94.4% - 0s 0 0 1.00000 0 129 18.00000 1.00000 94.4% - 0s 0 0 1.00000 0 128 18.00000 1.00000 94.4% - 0s H 0 0 15.0000000 1.00000 93.3% - 0s H 0 0 9.0000000 1.00000 88.9% - 0s 0 2 1.00000 0 128 9.00000 1.00000 88.9% - 0s H 75 44 7.0000000 1.09765 84.3% 23.7 0s * 128 49 11 6.0000000 1.29033 78.5% 23.5 0s Cutting planes: Gomory: 5 Zero half: 8 Mod-K: 4 Explored 402 nodes (11946 simplex iterations) in 0.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%