Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:41 2012 Optimize a model with 301 rows, 320 columns and 1070 nonzeros Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 301 rows, 288 columns, 1038 nonzeros Variable types: 0 continuous, 288 integer (287 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 185 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 0 118 51.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.15745 0 121 36.00000 0.15745 100% - 0s H 0 0 32.0000000 0.15745 100% - 0s H 0 0 28.0000000 0.15745 99.4% - 0s 0 0 0.80590 0 124 28.00000 0.80590 97.1% - 0s H 0 0 24.0000000 0.80590 96.6% - 0s 0 0 0.80590 0 124 24.00000 0.80590 96.6% - 0s H 0 0 20.0000000 0.80590 96.0% - 0s H 0 0 17.0000000 0.80590 95.3% - 0s 0 2 0.80748 0 124 17.00000 0.80748 95.3% - 0s * 46 5 33 4.0000000 1.98907 50.3% 15.6 0s Cutting planes: Gomory: 4 Explored 54 nodes (1585 simplex iterations) in 0.10 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%