Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:52 2012 Optimize a model with 353 rows, 362 columns and 1242 nonzeros Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 353 rows, 335 columns, 1215 nonzeros Variable types: 0 continuous, 335 integer (334 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 218 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 0 143 71.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 0 0.37567 0 144 40.00000 0.37567 99.1% - 0s H 0 0 24.0000000 0.37567 98.4% - 0s 0 0 1.00000 0 147 24.00000 1.00000 95.8% - 0s H 0 0 19.0000000 1.00000 94.7% - 0s H 0 0 12.0000000 1.00000 91.7% - 0s 0 0 1.00000 0 146 12.00000 1.00000 91.7% - 0s 0 0 1.00000 0 152 12.00000 1.00000 91.7% - 0s 0 0 1.00000 0 147 12.00000 1.00000 91.7% - 0s H 0 0 7.0000000 1.00000 85.7% - 0s 0 2 1.00000 0 147 7.00000 1.00000 85.7% - 0s H 27 20 5.0000000 1.00000 80.0% 27.1 0s * 90 11 12 4.0000000 2.13043 46.7% 24.2 0s Cutting planes: Gomory: 3 Explored 103 nodes (3576 simplex iterations) in 0.21 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%