Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:31:53 2012 Optimize a model with 295 rows, 224 columns and 959 nonzeros Presolve time: 0.00s Presolved: 295 rows, 224 columns, 959 nonzeros Variable types: 0 continuous, 224 integer (224 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 0.000000e+00, 127 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 76 61.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.49565 0 79 45.00000 0.49565 98.9% - 0s 0 0 1.01295 0 80 45.00000 1.01295 97.7% - 0s 0 0 1.38761 0 81 45.00000 1.38761 96.9% - 0s 0 0 1.40275 0 82 45.00000 1.40275 96.9% - 0s 0 2 1.40335 0 82 45.00000 1.40335 96.9% - 0s H 27 27 44.0000000 4.20875 90.4% 31.2 0s * 38 29 23 30.0000000 4.20875 86.0% 25.6 0s * 61 39 15 26.0000000 4.22752 83.7% 25.9 0s H 248 100 24.0000000 8.85418 63.1% 29.4 0s * 255 95 18 23.0000000 8.85418 61.5% 28.9 0s H 1162 78 22.0000000 15.42992 29.9% 24.4 0s Cutting planes: Gomory: 5 Mod-K: 1 Explored 1388 nodes (34166 simplex iterations) in 1.10 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%