Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:17:01 2012 Optimize a model with 4185 rows, 702 columns and 13128 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 4209 rows, 700 columns, 21196 nonzeros Variable types: 0 continuous, 700 integer (700 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.608696e+00, 3898 iterations, 0.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.60870 0 312 26.00000 4.60870 82.3% - 0s 0 0 7.00000 0 58 26.00000 7.00000 73.1% - 1s H 0 0 14.0000000 7.00000 50.0% - 1s H 0 0 8.0000000 7.00000 12.5% - 1s * 0 0 0 7.0000000 7.00000 0.0% - 1s Cutting planes: Clique: 9 Zero half: 39 Explored 0 nodes (7553 simplex iterations) in 1.10 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%