Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:05:20 2012 Optimize a model with 407 rows, 405 columns and 1420 nonzeros Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 407 rows, 376 columns, 1391 nonzeros Variable types: 0 continuous, 376 integer (375 binary) Found heuristic solution: objective 67.0000000 Root relaxation: objective 0.000000e+00, 209 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 0 154 67.00000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s 0 0 0.22455 0 157 53.00000 0.22455 100% - 0s H 0 0 42.0000000 0.22455 99.5% - 0s 0 0 0.76501 0 161 42.00000 0.76501 98.2% - 0s H 0 0 35.0000000 0.76501 97.8% - 0s 0 0 0.76501 0 161 35.00000 0.76501 97.8% - 0s H 0 0 28.0000000 0.76501 97.3% - 0s 0 2 0.76647 0 161 28.00000 0.76647 97.3% - 0s H 27 27 22.0000000 1.42241 93.5% 31.9 0s * 47 30 28 10.0000000 1.42241 85.8% 24.0 0s * 104 35 12 9.0000000 3.00000 66.7% 28.7 0s Cutting planes: Gomory: 4 Explored 293 nodes (9223 simplex iterations) in 0.35 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%