Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:37:34 2012 Optimize a model with 501 rows, 469 columns and 1719 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 501 rows, 450 columns, 1700 nonzeros Variable types: 0 continuous, 450 integer (449 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 267 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 0 185 88.00000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.40577 0 186 55.00000 0.40577 99.3% - 0s H 0 0 49.0000000 0.40577 99.2% - 0s 0 0 1.00000 0 187 49.00000 1.00000 98.0% - 0s H 0 0 31.0000000 1.00000 96.8% - 0s 0 0 1.00000 0 188 31.00000 1.00000 96.8% - 0s 0 0 1.00000 0 188 31.00000 1.00000 96.8% - 0s H 0 0 27.0000000 1.00000 96.3% - 0s 0 2 1.00000 0 188 27.00000 1.00000 96.3% - 0s H 27 27 21.0000000 1.00000 95.2% 47.4 0s H 54 39 16.0000000 1.00000 93.8% 28.2 0s Cutting planes: Gomory: 3 Explored 1144 nodes (34828 simplex iterations) in 1.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%