Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:17:58 2013 Optimize a model with 2640 rows, 576240 columns and 1152240 nonzeros Presolve time: 2.11s Presolved: 2640 rows, 576240 columns, 1152240 nonzeros Variable types: 576000 continuous, 240 integer (240 binary) Root relaxation: objective 5.655684e+05, 18863 iterations, 3.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 565568.354 0 7 - 565568.354 - - 5s H 0 0 607752.00000 565568.354 6.94% - 8s 0 0 565722.136 0 5 607752.000 565722.136 6.92% - 11s H 0 0 604863.01816 565722.136 6.47% - 11s H 0 0 604337.00000 565722.136 6.39% - 11s 0 0 565746.365 0 4 604337.000 565746.365 6.39% - 13s H 0 0 603717.00000 565746.365 6.29% - 13s 0 0 565765.050 0 4 603717.000 565765.050 6.29% - 14s 0 0 565768.250 0 4 603717.000 565768.250 6.29% - 16s H 0 0 603386.00000 565768.250 6.23% - 16s 0 0 565770.063 0 3 603386.000 565770.063 6.23% - 17s H 0 0 592844.42981 565770.063 4.57% - 17s H 0 0 591362.00000 565770.063 4.33% - 18s 0 0 565770.063 0 3 591362.000 565770.063 4.33% - 19s H 0 0 591341.00000 565770.063 4.32% - 19s 0 0 565770.063 0 3 591341.000 565770.063 4.32% - 20s 0 0 565770.063 0 3 591341.000 565770.063 4.32% - 21s H 0 0 591315.00000 565770.063 4.32% - 22s 0 0 565770.063 0 3 591315.000 565770.063 4.32% - 23s H 0 0 584688.00000 565770.063 3.24% - 29s 0 2 565780.827 0 3 584688.000 565780.827 3.23% - 29s 1 3 565867.581 1 5 584688.000 565867.581 3.22% 267 31s H 4 4 571902.42991 565947.153 1.04% 148 33s 8 10 566009.708 8 2 571902.430 565962.968 1.04% 129 35s H 9 9 569867.00000 565962.968 0.69% 114 35s H 15 13 566411.00000 565962.968 0.08% 82.0 37s * 17 3 16 566062.00000 565962.968 0.02% 79.2 37s Cutting planes: Implied bound: 109 Flow cover: 4 Explored 21 nodes (21333 simplex iterations) in 38.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.660620000000e+05, best bound 5.660620000000e+05, gap 0.0%