Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:51:30 2012 Optimize a model with 6599 rows, 930 columns and 20578 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 6627 rows, 928 columns, 26083 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.577465e+00, 5799 iterations, 0.35 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.57746 0 731 30.00000 3.57746 88.1% - 1s 0 0 6.00000 0 131 30.00000 6.00000 80.0% - 1s H 0 0 27.0000000 6.00000 77.8% - 1s 0 0 6.00000 0 140 27.00000 6.00000 77.8% - 1s H 0 0 25.0000000 6.00000 76.0% - 1s 0 0 6.00000 0 102 25.00000 6.00000 76.0% - 3s H 0 0 21.0000000 6.00000 71.4% - 3s H 0 0 18.0000000 6.00000 66.7% - 3s H 0 0 15.0000000 6.00000 60.0% - 3s 0 0 6.00000 0 109 15.00000 6.00000 60.0% - 3s H 0 0 9.0000000 6.00000 33.3% - 3s H 0 0 7.0000000 6.00000 14.3% - 3s 0 0 6.00000 0 119 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 107 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 124 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 125 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 127 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 118 7.00000 6.00000 14.3% - 4s 0 2 6.00000 0 118 7.00000 6.00000 14.3% - 4s Cutting planes: Clique: 7 Zero half: 24 Explored 3 nodes (23729 simplex iterations) in 4.39 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%