Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:51:06 2012 Optimize a model with 2840 rows, 108 columns and 5680 nonzeros Presolve removed 2000 rows and 0 columns Presolve time: 0.10s Presolved: 840 rows, 108 columns, 5630 nonzeros Variable types: 0 continuous, 108 integer (108 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.519515e+01, 494 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.19515 0 105 6.00000 15.19515 153% - 0s H 0 0 7.0000000 15.19515 117% - 0s 0 0 14.94718 0 108 7.00000 14.94718 114% - 0s H 0 0 8.0000000 14.94718 86.8% - 0s 0 0 14.83696 0 107 8.00000 14.83696 85.5% - 0s H 0 0 9.0000000 14.83696 64.9% - 0s 0 0 14.81263 0 108 9.00000 14.81263 64.6% - 0s 0 0 14.77197 0 108 9.00000 14.77197 64.1% - 0s 0 0 14.75829 0 108 9.00000 14.75829 64.0% - 0s 0 0 14.75302 0 108 9.00000 14.75302 63.9% - 0s 0 0 14.73778 0 108 9.00000 14.73778 63.8% - 1s 0 0 14.73536 0 108 9.00000 14.73536 63.7% - 1s 0 2 14.73278 0 108 9.00000 14.73278 63.7% - 1s * 270 37 4 10.0000000 12.10412 21.0% 57.8 2s Cutting planes: Clique: 66 Zero half: 2 Explored 308 nodes (17466 simplex iterations) in 2.55 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%