Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:00 2012 Optimize a model with 197 rows, 151 columns and 641 nonzeros Presolve time: 0.00s Presolved: 197 rows, 151 columns, 641 nonzeros Variable types: 0 continuous, 151 integer (151 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 89 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 52 41.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.59524 0 53 33.00000 0.59524 98.2% - 0s H 0 0 31.0000000 0.59524 98.1% - 0s 0 0 1.00000 0 56 31.00000 1.00000 96.8% - 0s H 0 0 28.0000000 1.00000 96.4% - 0s 0 0 1.00000 0 56 28.00000 1.00000 96.4% - 0s 0 0 1.00000 0 54 28.00000 1.00000 96.4% - 0s 0 2 1.00000 0 54 28.00000 1.00000 96.4% - 0s H 27 24 20.0000000 3.27780 83.6% 24.1 0s * 395 129 16 19.0000000 11.90323 37.4% 17.0 0s Cutting planes: Gomory: 2 Explored 990 nodes (13695 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%