Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:42 2012 Optimize a model with 121 rows, 76 columns and 376 nonzeros Presolve time: 0.00s Presolved: 121 rows, 76 columns, 376 nonzeros Variable types: 0 continuous, 76 integer (76 binary) Found heuristic solution: objective 32.0000000 Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 25 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 16 30.00000 0.00000 100% - 0s 0 0 0.91667 0 18 30.00000 0.91667 96.9% - 0s 0 0 1.08333 0 18 30.00000 1.08333 96.4% - 0s 0 0 1.16667 0 18 30.00000 1.16667 96.1% - 0s H 0 0 27.0000000 1.16667 95.7% - 0s 0 0 1.16667 0 18 27.00000 1.16667 95.7% - 0s 0 0 1.16667 0 18 27.00000 1.16667 95.7% - 0s H 0 0 25.0000000 1.16667 95.3% - 0s 0 2 1.26667 0 18 25.00000 1.26667 94.9% - 0s * 23 10 9 24.0000000 6.28571 73.8% 13.2 0s * 94 23 8 23.0000000 13.81818 39.9% 11.4 0s Cutting planes: Gomory: 1 Mod-K: 4 Explored 223 nodes (2098 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%