Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:45 2012 Optimize a model with 267 rows, 296 columns and 961 nonzeros Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 267 rows, 265 columns, 930 nonzeros Variable types: 0 continuous, 265 integer (264 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 177 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 0 115 43.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.13999 0 117 28.00000 0.13999 100% - 0s H 0 0 16.0000000 0.13999 99.1% - 0s 0 0 0.74724 0 120 16.00000 0.74724 95.3% - 0s H 0 0 10.0000000 0.74724 92.5% - 0s 0 0 0.74724 0 119 10.00000 0.74724 92.5% - 0s H 0 0 9.0000000 0.74724 91.7% - 0s 0 2 0.74865 0 119 9.00000 0.74865 91.7% - 0s * 13 13 8 5.0000000 1.00000 80.0% 58.3 0s * 30 15 22 4.0000000 1.00000 75.0% 30.0 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 73 nodes (2996 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%