Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:06:38 2012 Optimize a model with 13389 rows, 4290 columns and 44133 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.39s Presolved: 13452 rows, 4288 columns, 47946 nonzeros Variable types: 0 continuous, 4288 integer (4288 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 2.000000e+00, 3301 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 65.00000 2.00000 96.9% - 0s H 0 0 63.0000000 2.00000 96.8% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.66667 0 294 5.00000 2.66667 46.7% - 2s 0 0 2.67742 0 3574 5.00000 2.67742 46.5% - 3s 0 0 2.67742 0 3554 5.00000 2.67742 46.5% - 5s 0 0 2.67742 0 3540 5.00000 2.67742 46.5% - 6s 0 0 2.67742 0 3542 5.00000 2.67742 46.5% - 6s 0 0 2.67742 0 3171 5.00000 2.67742 46.5% - 12s 0 0 2.67742 0 3057 5.00000 2.67742 46.5% - 17s 0 0 2.67742 0 3112 5.00000 2.67742 46.5% - 21s 0 0 2.67742 0 3083 5.00000 2.67742 46.5% - 24s 0 0 2.67742 0 3132 5.00000 2.67742 46.5% - 29s 0 0 2.67742 0 3139 5.00000 2.67742 46.5% - 34s 0 0 2.67742 0 3120 5.00000 2.67742 46.5% - 38s 0 0 2.67742 0 3030 5.00000 2.67742 46.5% - 41s 0 0 2.67742 0 3097 5.00000 2.67742 46.5% - 46s 0 0 2.67742 0 3097 5.00000 2.67742 46.5% - 48s 0 2 3.00000 0 3097 5.00000 3.00000 40.0% - 57s * 17 5 14 4.0000000 3.00000 25.0% 808 58s Cutting planes: Clique: 123 Zero half: 38 Explored 25 nodes (159024 simplex iterations) in 59.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%