Gurobi 5.0.1 (linux64) logging started Fri Nov 16 12:26:02 2012 Optimize a model with 18648 rows, 5256 columns and 60912 nonzeros Presolve time: 0.15s Presolved: 18648 rows, 5256 columns, 61013 nonzeros Variable types: 0 continuous, 5256 integer (5256 binary) Found heuristic solution: objective 49.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17659 1.9656342e+00 2.850515e+02 0.000000e+00 5s 20710 2.0000000e+00 0.000000e+00 0.000000e+00 7s Root relaxation: objective 2.000000e+00, 20710 iterations, 6.79 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 144 49.00000 2.00000 95.9% - 7s H 0 0 16.0000000 2.00000 87.5% - 7s H 0 0 5.0000000 2.00000 60.0% - 7s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 8s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 16s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 16s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 16s 0 0 2.00000 0 144 5.00000 2.00000 60.0% - 17s 0 2 2.00000 0 144 5.00000 2.00000 60.0% - 18s 1 3 3.00000 1 274 5.00000 2.00000 60.0% 20215 27s 2 4 3.00000 1 376 5.00000 3.00000 40.0% 19280 35s 8 8 3.00000 5 128 5.00000 3.00000 40.0% 6294 40s 10 10 3.14286 6 239 5.00000 3.00000 40.0% 7329 45s 27 13 4.00000 6 132 5.00000 3.00000 40.0% 3551 52s * 39 6 17 4.0000000 3.00000 25.0% 2524 52s 47 2 cutoff 4 4.00000 3.00000 25.0% 2200 55s Cutting planes: Clique: 11 Explored 56 nodes (152354 simplex iterations) in 58.76 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%