Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:34:45 2014 Optimize a model with 3481 rows, 3423 columns and 13514 nonzeros Presolve time: 0.09s Presolved: 3481 rows, 3423 columns, 13514 nonzeros Variable types: 1 continuous, 3422 integer (3422 binary) Found heuristic solution: objective 0.9359645 Found heuristic solution: objective 0.8799413 Found heuristic solution: objective 0.7729502 Root relaxation: objective 1.711100e-01, 1656 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.17111 0 512 0.77295 0.17111 77.9% - 0s H 0 0 0.4157328 0.17111 58.8% - 0s H 0 0 0.3876019 0.17111 55.9% - 0s 0 0 0.17870 0 474 0.38760 0.17870 53.9% - 0s 0 0 0.17870 0 506 0.38760 0.17870 53.9% - 0s H 0 0 0.3704712 0.17870 51.8% - 0s 0 0 0.17871 0 491 0.37047 0.17871 51.8% - 0s H 0 0 0.3703604 0.17871 51.7% - 0s 0 0 0.17970 0 504 0.37036 0.17970 51.5% - 0s H 0 0 0.2998929 0.17970 40.1% - 0s 0 0 0.18108 0 436 0.29989 0.18108 39.6% - 0s H 0 0 0.2886705 0.18108 37.3% - 0s 0 2 0.18503 0 373 0.28867 0.18503 35.9% - 0s * 7 5 5 0.2872324 0.18617 35.2% 315 1s * 10 6 7 0.2768327 0.18617 32.8% 246 1s H 11 5 0.2616872 0.18617 28.9% 223 1s Cutting planes: Gomory: 2 MIR: 1 Explored 17 nodes (11281 simplex iterations) in 1.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.616871662906e-01, best bound 2.616871662906e-01, gap 0.0%