Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:15 2012 Optimize a model with 141 rows, 119 columns and 469 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 141 rows, 118 columns, 468 nonzeros Variable types: 0 continuous, 118 integer (117 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 70 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 47 31.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.48936 0 48 18.00000 0.48936 97.3% - 0s H 0 0 14.0000000 0.48936 96.5% - 0s 0 0 1.00000 0 50 14.00000 1.00000 92.9% - 0s H 0 0 12.0000000 1.00000 91.7% - 0s 0 0 1.00000 0 49 12.00000 1.00000 91.7% - 0s H 0 0 9.0000000 1.00000 88.9% - 0s 0 2 1.00000 0 49 9.00000 1.00000 88.9% - 0s Cutting planes: Gomory: 3 Explored 64 nodes (1330 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%