Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:50:02 2013 Optimize a model with 66501 rows, 65691 columns and 262521 nonzeros Presolve removed 5754 rows and 0 columns Presolve time: 0.43s Presolved: 60747 rows, 65691 columns, 251013 nonzeros Variable types: 65610 continuous, 81 integer (81 binary) Root relaxation: objective 9.778605e+04, 14932 iterations, 3.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 97786.0546 0 3 - 97786.0546 - - 3s H 0 0 99826.000000 97786.0546 2.04% - 4s 0 0 97787.0457 0 5 99826.0000 97787.0457 2.04% - 4s 0 0 97787.0457 0 5 99826.0000 97787.0457 2.04% - 5s H 0 0 99188.659091 97787.0457 1.41% - 7s 0 2 97787.6283 0 5 99188.6591 97787.6283 1.41% - 8s H 2 2 99085.865057 97821.9352 1.28% 88.0 9s H 6 4 98006.454545 97850.0363 0.16% 110 9s 9 6 97873.9200 9 1 98006.4545 97850.0363 0.16% 101 10s H 14 5 97971.000000 97850.0363 0.12% 90.6 10s * 18 6 17 97954.000000 97850.0363 0.11% 98.9 11s * 19 5 16 97951.000000 97850.0363 0.10% 94.2 11s H 22 3 97891.911917 97856.2000 0.04% 91.4 11s * 24 3 9 97887.000000 97866.6932 0.02% 89.5 11s Cutting planes: Gomory: 2 Flow cover: 3 Explored 28 nodes (17302 simplex iterations) in 11.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.788700000000e+04, best bound 9.788700000000e+04, gap 0.0%