Gurobi 5.0.1 (linux64) logging started Wed Nov 28 03:51:36 2012 Optimize a model with 322 rows, 289 columns and 1664 nonzeros Presolve removed 16 rows and 1 columns Presolve time: 0.01s Presolved: 306 rows, 288 columns, 1600 nonzeros Variable types: 16 continuous, 272 integer (272 binary) Found heuristic solution: objective 160.0000000 Root relaxation: objective 2.200000e+01, 74 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22.00000 0 24 160.00000 22.00000 86.2% - 0s H 0 0 145.0000000 22.00000 84.8% - 0s 0 0 22.39130 0 39 145.00000 22.39130 84.6% - 0s 0 0 22.39130 0 38 145.00000 22.39130 84.6% - 0s 0 0 22.39130 0 38 145.00000 22.39130 84.6% - 0s H 0 0 122.0000000 22.39130 81.6% - 0s 0 0 22.39130 0 26 122.00000 22.39130 81.6% - 0s H 0 0 98.0000000 22.39130 77.2% - 0s H 0 0 97.0000000 22.39130 76.9% - 0s 0 0 22.39130 0 35 97.00000 22.39130 76.9% - 0s 0 0 22.39130 0 32 97.00000 22.39130 76.9% - 0s H 0 0 94.0000000 22.39130 76.2% - 0s 0 0 22.39130 0 30 94.00000 22.39130 76.2% - 0s H 0 0 41.0000000 22.39130 45.4% - 0s 0 0 22.39130 0 26 41.00000 22.39130 45.4% - 0s 0 0 22.39130 0 26 41.00000 22.39130 45.4% - 0s 0 0 22.39130 0 26 41.00000 22.39130 45.4% - 0s H 0 0 39.0000000 22.39130 42.6% - 0s 0 0 22.39130 0 22 39.00000 22.39130 42.6% - 0s 0 0 22.72000 0 36 39.00000 22.72000 41.7% - 0s 0 0 22.72000 0 35 39.00000 22.72000 41.7% - 0s 0 0 22.72000 0 35 39.00000 22.72000 41.7% - 0s 0 0 22.72000 0 30 39.00000 22.72000 41.7% - 0s 0 0 22.72000 0 30 39.00000 22.72000 41.7% - 0s 0 0 22.72000 0 30 39.00000 22.72000 41.7% - 0s 0 2 23.50000 0 30 39.00000 23.50000 39.7% - 0s Cutting planes: Gomory: 3 MIR: 4 Explored 1037 nodes (9036 simplex iterations) in 0.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%