Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:42 2012 Optimize a model with 113 rows, 72 columns and 352 nonzeros Presolve time: 0.00s Presolved: 113 rows, 72 columns, 352 nonzeros Variable types: 0 continuous, 72 integer (72 binary) Found heuristic solution: objective 33.0000000 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 H 0 0 26.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.62500 0 18 23.00000 0.62500 97.3% - 0s 0 0 0.85380 0 26 23.00000 0.85380 96.3% - 0s 0 0 1.00000 0 18 23.00000 1.00000 95.7% - 0s H 0 0 22.0000000 1.00000 95.5% - 0s 0 0 1.00000 0 18 22.00000 1.00000 95.5% - 0s 0 0 1.00000 0 18 22.00000 1.00000 95.5% - 0s 0 2 1.17763 0 18 22.00000 1.17763 94.6% - 0s * 33 9 8 21.0000000 4.50000 78.6% 13.5 0s Cutting planes: Gomory: 1 Mod-K: 7 Explored 135 nodes (1313 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%