Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:31 2012 Optimize a model with 926 rows, 61 columns and 1852 nonzeros Presolve removed 645 rows and 0 columns Presolve time: 0.01s Presolved: 281 rows, 61 columns, 1663 nonzeros Variable types: 0 continuous, 61 integer (61 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.058637e+01, 155 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.58637 0 52 6.00000 10.58637 76.4% - 0s H 0 0 7.0000000 10.58637 51.2% - 0s 0 0 10.11745 0 61 7.00000 10.11745 44.5% - 0s 0 0 10.05691 0 61 7.00000 10.05691 43.7% - 0s 0 0 10.00710 0 60 7.00000 10.00710 43.0% - 0s 0 0 9.98467 0 60 7.00000 9.98467 42.6% - 0s 0 0 9.97589 0 61 7.00000 9.97589 42.5% - 0s 0 0 9.94926 0 59 7.00000 9.94926 42.1% - 0s 0 0 9.93504 0 60 7.00000 9.93504 41.9% - 0s 0 0 9.92178 0 60 7.00000 9.92178 41.7% - 0s 0 0 9.92107 0 60 7.00000 9.92107 41.7% - 0s 0 0 9.92085 0 60 7.00000 9.92085 41.7% - 0s 0 2 9.91548 0 60 7.00000 9.91548 41.6% - 0s * 46 0 7 8.0000000 8.00000 0.0% 36.7 0s Cutting planes: Clique: 33 Zero half: 5 Explored 47 nodes (2158 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%