Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:12:34 2013 Optimize a model with 561 rows, 26061 columns and 52071 nonzeros Presolve time: 0.04s Presolved: 561 rows, 26061 columns, 52071 nonzeros Variable types: 26010 continuous, 51 integer (51 binary) Root relaxation: objective 6.249309e+04, 1321 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 62493.0944 0 10 - 62493.0944 - - 0s H 0 0 65296.000000 62493.0944 4.29% - 0s H 0 0 63233.000000 62493.0944 1.17% - 0s 0 0 62985.5803 0 4 63233.0000 62985.5803 0.39% - 0s 0 0 62990.2485 0 4 63233.0000 62990.2485 0.38% - 0s 0 0 63005.4750 0 6 63233.0000 63005.4750 0.36% - 0s 0 0 63016.1553 0 5 63233.0000 63016.1553 0.34% - 0s 0 0 63017.0864 0 5 63233.0000 63017.0864 0.34% - 0s 0 0 63018.3106 0 4 63233.0000 63018.3106 0.34% - 0s 0 0 63019.4200 0 6 63233.0000 63019.4200 0.34% - 0s H 0 0 63170.000000 63019.4200 0.24% - 0s 0 0 63019.4200 0 10 63170.0000 63019.4200 0.24% - 0s 0 0 63019.4200 0 5 63170.0000 63019.4200 0.24% - 0s 0 0 63019.4200 0 4 63170.0000 63019.4200 0.24% - 0s 0 0 63019.4200 0 5 63170.0000 63019.4200 0.24% - 0s 0 0 63019.4200 0 4 63170.0000 63019.4200 0.24% - 0s 0 0 63019.6600 0 3 63170.0000 63019.6600 0.24% - 0s 0 0 63020.3272 0 4 63170.0000 63020.3272 0.24% - 0s 0 0 63020.4293 0 4 63170.0000 63020.4293 0.24% - 0s 0 0 63020.7150 0 3 63170.0000 63020.7150 0.24% - 0s 0 0 63020.7532 0 2 63170.0000 63020.7532 0.24% - 0s 0 0 63020.7532 0 2 63170.0000 63020.7532 0.24% - 1s 0 2 63022.2156 0 2 63170.0000 63022.2156 0.23% - 1s Cutting planes: Implied bound: 64 Flow cover: 4 Explored 17 nodes (3526 simplex iterations) in 1.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.317000000000e+04, best bound 6.317000000000e+04, gap 0.0%