Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:53 2012 Optimize a model with 259 rows, 197 columns and 842 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 259 rows, 196 columns, 841 nonzeros Variable types: 0 continuous, 196 integer (195 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 99 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 64 56.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s 0 0 0.46875 0 65 44.00000 0.46875 98.9% - 0s H 0 0 41.0000000 0.46875 98.9% - 0s 0 0 1.07057 0 67 41.00000 1.07057 97.4% - 0s H 0 0 35.0000000 1.07057 96.9% - 0s 0 0 1.29592 0 68 35.00000 1.29592 96.3% - 0s 0 2 1.29655 0 68 35.00000 1.29655 96.3% - 0s H 24 24 28.0000000 2.69545 90.4% 34.7 0s * 27 24 15 25.0000000 2.69545 89.2% 33.3 0s H 166 98 24.0000000 10.33333 56.9% 25.9 0s * 175 87 12 23.0000000 10.33333 55.1% 25.2 0s Cutting planes: Gomory: 4 Explored 960 nodes (18331 simplex iterations) in 0.57 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%