Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:12 2012 Optimize a model with 343 rows, 37 columns and 686 nonzeros Presolve removed 230 rows and 0 columns Presolve time: 0.00s Presolved: 113 rows, 37 columns, 592 nonzeros Variable types: 0 continuous, 37 integer (37 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 7.310383e+00, 67 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7.31038 0 33 5.00000 7.31038 46.2% - 0s H 0 0 6.0000000 7.31038 21.8% - 0s 0 0 7.11478 0 33 6.00000 7.11478 18.6% - 0s 0 0 7.00910 0 31 6.00000 7.00910 16.8% - 0s Cutting planes: Gomory: 2 Clique: 9 Zero half: 15 Explored 0 nodes (114 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%