Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:52 2012 Optimize a model with 119 rows, 76 columns and 371 nonzeros Presolve time: 0.00s Presolved: 119 rows, 76 columns, 371 nonzeros Variable types: 0 continuous, 76 integer (76 binary) Found heuristic solution: objective 31.0000000 Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 26 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 17 30.00000 0.00000 100% - 0s 0 0 0.83824 0 19 30.00000 0.83824 97.2% - 0s 0 0 0.83824 0 19 30.00000 0.83824 97.2% - 0s 0 0 0.83824 0 19 30.00000 0.83824 97.2% - 0s H 0 0 29.0000000 0.83824 97.1% - 0s H 0 0 26.0000000 0.83824 96.8% - 0s 0 2 0.93750 0 19 26.00000 0.93750 96.4% - 0s * 21 9 10 25.0000000 3.42143 86.3% 14.0 0s * 36 15 7 24.0000000 3.53500 85.3% 14.0 0s * 65 21 7 23.0000000 7.87500 65.8% 13.4 0s * 254 3 9 22.0000000 20.00000 9.09% 9.5 0s Cutting planes: Gomory: 1 Mod-K: 4 Explored 260 nodes (2506 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%