Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:54 2012 Optimize a model with 53 rows, 48 columns and 178 nonzeros Presolve time: 0.00s Presolved: 53 rows, 48 columns, 178 nonzeros Variable types: 0 continuous, 48 integer (48 binary) Found heuristic solution: objective 15.0000000 Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 32 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 21 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.47619 0 22 5.00000 0.47619 90.5% - 0s 0 0 1.00000 0 26 5.00000 1.00000 80.0% - 0s H 0 0 3.0000000 1.00000 66.7% - 0s 0 0 1.00000 0 26 3.00000 1.00000 66.7% - 0s 0 0 1.00000 0 24 3.00000 1.00000 66.7% - 0s 0 2 1.00000 0 24 3.00000 1.00000 66.7% - 0s Cutting planes: Gomory: 1 Mod-K: 2 Explored 11 nodes (274 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%