Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:53 2012 Optimize a model with 279 rows, 300 columns and 995 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 279 rows, 279 columns, 974 nonzeros Variable types: 0 continuous, 279 integer (278 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 0.000000e+00, 181 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 0 107 44.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00688 0 110 16.00000 0.00688 100% - 0s H 0 0 15.0000000 0.00688 100% - 0s 0 0 0.67950 0 115 15.00000 0.67950 95.5% - 0s H 0 0 5.0000000 0.67950 86.4% - 0s 0 0 0.67950 0 119 5.00000 0.67950 86.4% - 0s 0 0 0.67950 0 113 5.00000 0.67950 86.4% - 0s H 0 0 4.0000000 0.67950 83.0% - 0s 0 2 0.68035 0 113 4.00000 0.68035 83.0% - 0s * 23 8 11 3.0000000 1.11742 62.8% 28.7 0s Cutting planes: Gomory: 4 Explored 45 nodes (1622 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%