Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:55:22 2012 Optimize a model with 3409 rows, 116 columns and 6818 nonzeros Presolve removed 2450 rows and 0 columns Presolve time: 0.11s Presolved: 959 rows, 116 columns, 6768 nonzeros Variable types: 0 continuous, 116 integer (116 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.516908e+01, 476 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.16908 0 114 8.00000 15.16908 89.6% - 0s 0 0 14.92279 0 114 8.00000 14.92279 86.5% - 0s 0 0 14.86192 0 114 8.00000 14.86192 85.8% - 0s 0 0 14.82766 0 115 8.00000 14.82766 85.3% - 0s 0 0 14.78443 0 116 8.00000 14.78443 84.8% - 0s 0 0 14.77102 0 116 8.00000 14.77102 84.6% - 0s 0 0 14.76883 0 116 8.00000 14.76883 84.6% - 0s H 0 0 9.0000000 14.76883 64.1% - 0s 0 0 14.76862 0 116 9.00000 14.76862 64.1% - 1s H 0 0 10.0000000 14.76862 47.7% - 1s 0 2 14.76838 0 116 10.00000 14.76838 47.7% - 1s Cutting planes: Clique: 61 Zero half: 1 Explored 140 nodes (14063 simplex iterations) in 2.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%