Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:04:33 2012 Optimize a model with 439 rows, 420 columns and 1515 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 439 rows, 404 columns, 1499 nonzeros Variable types: 0 continuous, 404 integer (403 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 0.000000e+00, 258 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 0 176 76.00000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.27867 0 178 64.00000 0.27867 100% - 0s H 0 0 53.0000000 0.27867 99.5% - 0s 0 0 0.76894 0 181 53.00000 0.76894 98.5% - 0s H 0 0 42.0000000 0.76894 98.2% - 0s H 0 0 37.0000000 0.76894 97.9% - 0s 0 2 0.77513 0 181 37.00000 0.77513 97.9% - 0s * 42 31 26 15.0000000 1.00000 93.3% 28.3 0s * 62 38 16 14.0000000 1.00000 92.9% 28.3 0s H 87 40 12.0000000 1.00000 91.7% 30.6 0s H 163 67 11.0000000 1.00000 90.9% 38.4 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 571 nodes (21513 simplex iterations) in 0.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%