Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:24 2012 Optimize a model with 800 rows, 57 columns and 1600 nonzeros Presolve removed 545 rows and 0 columns Presolve time: 0.01s Presolved: 255 rows, 57 columns, 1468 nonzeros Variable types: 0 continuous, 57 integer (57 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.044966e+01, 115 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.44966 0 49 7.00000 10.44966 49.3% - 0s 0 0 10.02660 0 55 7.00000 10.02660 43.2% - 0s H 0 0 8.0000000 10.02660 25.3% - 0s 0 0 9.93296 0 54 8.00000 9.93296 24.2% - 0s H 0 0 9.0000000 9.93296 10.4% - 0s Cutting planes: Clique: 17 Zero half: 1 Explored 0 nodes (221 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%