Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:23:35 2012 Optimize a model with 279 rows, 210 columns and 905 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 279 rows, 209 columns, 904 nonzeros Variable types: 0 continuous, 209 integer (208 binary) Found heuristic solution: objective 60.0000000 Root relaxation: objective 0.000000e+00, 96 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 69 60.00000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.49275 0 70 45.00000 0.49275 98.9% - 0s H 0 0 44.0000000 0.49275 98.9% - 0s 0 0 1.04556 0 71 44.00000 1.04556 97.6% - 0s H 0 0 37.0000000 1.04556 97.2% - 0s 0 0 1.12321 0 72 37.00000 1.12321 97.0% - 0s 0 0 1.12458 0 73 37.00000 1.12458 97.0% - 0s 0 0 1.12458 0 73 37.00000 1.12458 97.0% - 0s H 0 0 36.0000000 1.12458 96.9% - 0s 0 2 1.12458 0 73 36.00000 1.12458 96.9% - 0s * 44 31 29 26.0000000 3.01037 88.4% 25.6 0s * 1067 265 23 24.0000000 13.14035 45.2% 23.2 0s Explored 2792 nodes (58496 simplex iterations) in 2.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%