Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:20:48 2012 Optimize a model with 14715 rows, 18360 columns and 61965 nonzeros Presolve removed 26 rows and 3510 columns Presolve time: 0.28s Presolved: 14689 rows, 14850 columns, 58455 nonzeros Variable types: 0 continuous, 14850 integer (14850 binary) Found heuristic solution: objective 50.0000000 Root relaxation: objective 2.000000e+00, 18125 iterations, 3.03 seconds Total elapsed time = 6.24s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 166 50.00000 2.00000 96.0% - 7s H 0 0 6.0000000 2.00000 66.7% - 7s H 0 0 4.0000000 2.00000 50.0% - 7s 0 0 2.00000 0 390 4.00000 2.00000 50.0% - 11s H 0 0 3.0000000 2.00000 33.3% - 11s 0 0 2.00000 0 287 3.00000 2.00000 33.3% - 23s 0 0 2.00000 0 275 3.00000 2.00000 33.3% - 37s 0 0 2.00000 0 279 3.00000 2.00000 33.3% - 50s 0 0 2.00000 0 305 3.00000 2.00000 33.3% - 61s 0 0 2.00000 0 166 3.00000 2.00000 33.3% - 76s 0 0 2.00000 0 279 3.00000 2.00000 33.3% - 86s 0 0 2.00000 0 279 3.00000 2.00000 33.3% - 100s 0 0 2.00000 0 279 3.00000 2.00000 33.3% - 112s 0 2 2.00000 0 279 3.00000 2.00000 33.3% - 141s 4 4 2.00000 1 166 3.00000 2.00000 33.3% 7275 152s 5 5 2.00000 1 279 3.00000 2.00000 33.3% 5820 168s 6 6 2.00000 1 166 3.00000 2.00000 33.3% 4850 183s 7 6 2.00000 1 166 3.00000 2.00000 33.3% 4157 198s 8 7 2.00000 1 166 3.00000 2.00000 33.3% 3638 215s 9 8 2.00000 1 166 3.00000 2.00000 33.3% 3233 228s 10 8 2.00000 1 170 3.00000 2.00000 33.3% 2910 248s 11 9 2.00000 1 170 3.00000 2.00000 33.3% 2646 254s 12 10 2.00000 1 170 3.00000 2.00000 33.3% 2425 255s 13 10 infeasible 10 3.00000 2.00000 33.3% 23680 264s 14 9 infeasible 10 3.00000 3.00000 0.0% 22271 266s Cutting planes: Gomory: 6 Zero half: 1 Explored 15 nodes (586646 simplex iterations) in 266.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%