Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:43:28 2012 Optimize a model with 345 rows, 348 columns and 1208 nonzeros Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 345 rows, 317 columns, 1177 nonzeros Variable types: 0 continuous, 317 integer (316 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 0.000000e+00, 190 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 0 137 53.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.25012 0 139 39.00000 0.25012 99.4% - 0s H 0 0 31.0000000 0.25012 99.2% - 0s H 0 0 27.0000000 0.25012 99.1% - 0s 0 0 0.98064 0 142 27.00000 0.98064 96.4% - 0s H 0 0 21.0000000 0.98064 95.3% - 0s 0 0 0.98112 0 145 21.00000 0.98112 95.3% - 0s 0 0 0.98112 0 143 21.00000 0.98112 95.3% - 0s H 0 0 16.0000000 0.98112 93.9% - 0s 0 2 0.98211 0 143 16.00000 0.98211 93.9% - 0s H 27 27 13.0000000 1.00000 92.3% 36.7 0s H 36 36 12.0000000 1.00000 91.7% 29.9 0s * 44 38 25 11.0000000 1.00000 90.9% 26.1 0s * 75 40 17 9.0000000 1.11998 87.6% 23.1 0s Cutting planes: Gomory: 4 Zero half: 6 Explored 426 nodes (10043 simplex iterations) in 0.41 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%