Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:24 2012 Optimize a model with 783 rows, 56 columns and 1566 nonzeros Presolve removed 553 rows and 0 columns Presolve time: 0.01s Presolved: 230 rows, 56 columns, 1350 nonzeros Variable types: 0 continuous, 56 integer (56 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 9.824742e+00, 112 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9.82474 0 51 5.00000 9.82474 96.5% - 0s H 0 0 6.0000000 9.82474 63.7% - 0s H 0 0 7.0000000 9.82474 40.4% - 0s 0 0 9.48249 0 54 7.00000 9.48249 35.5% - 0s 0 0 9.42553 0 53 7.00000 9.42553 34.7% - 0s 0 0 9.40515 0 53 7.00000 9.40515 34.4% - 0s 0 0 9.39352 0 53 7.00000 9.39352 34.2% - 0s 0 0 9.39248 0 53 7.00000 9.39248 34.2% - 0s 0 2 9.38791 0 53 7.00000 9.38791 34.1% - 0s Cutting planes: Gomory: 1 Clique: 19 Zero half: 8 Explored 29 nodes (1043 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%