Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:55 2012 Optimize a model with 345 rows, 356 columns and 1216 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 345 rows, 333 columns, 1193 nonzeros Variable types: 0 continuous, 333 integer (332 binary) Found heuristic solution: objective 67.0000000 Root relaxation: objective 0.000000e+00, 232 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 0 137 67.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.23058 0 139 39.00000 0.23058 99.4% - 0s H 0 0 30.0000000 0.23058 99.2% - 0s 0 0 0.87900 0 148 30.00000 0.87900 97.1% - 0s H 0 0 21.0000000 0.87900 95.8% - 0s 0 0 0.87900 0 150 21.00000 0.87900 95.8% - 0s 0 0 0.87900 0 150 21.00000 0.87900 95.8% - 0s H 0 0 17.0000000 0.87900 94.8% - 0s 0 2 0.88487 0 149 17.00000 0.88487 94.8% - 0s * 21 10 12 6.0000000 1.67507 72.1% 25.4 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 44 nodes (1979 simplex iterations) in 0.14 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%