Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:15 2013 Optimize a model with 308 rows, 7868 columns and 15708 nonzeros Presolve time: 0.01s Presolved: 308 rows, 7868 columns, 15708 nonzeros Variable types: 7840 continuous, 28 integer (28 binary) Root relaxation: objective 2.976630e+04, 381 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 29766.3044 0 6 - 29766.3044 - - 0s H 0 0 30647.000000 29766.3044 2.87% - 0s H 0 0 30000.000000 29766.3044 0.78% - 0s 0 0 29992.0826 0 3 30000.0000 29992.0826 0.03% - 0s 0 0 29998.3321 0 2 30000.0000 29998.3321 0.01% - 0s Cutting planes: Implied bound: 36 Flow cover: 6 Explored 0 nodes (508 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+04, best bound 2.999833214286e+04, gap 0.0056%