Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:46:22 2013 Optimize a model with 40446 rows, 39816 columns and 158886 nonzeros Presolve removed 63 rows and 0 columns Presolve time: 0.18s Presolved: 40383 rows, 39816 columns, 158823 nonzeros Variable types: 39753 continuous, 63 integer (63 binary) Root relaxation: objective 5.412572e+04, 4973 iterations, 2.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 54125.7204 0 53 - 54125.7204 - - 2s H 0 0 79602.000000 54125.7204 32.0% - 3s 0 0 63846.0400 0 13 79602.0000 63846.0400 19.8% - 7s H 0 0 78400.120642 63846.0400 18.6% - 7s H 0 0 72602.000000 63846.0400 12.1% - 7s 0 0 64346.4169 0 7 72602.0000 64346.4169 11.4% - 8s H 0 0 70005.830585 64346.4169 8.08% - 8s H 0 0 66289.000000 64346.4169 2.93% - 8s 0 0 64382.3740 0 3 66289.0000 64382.3740 2.88% - 8s H 0 0 65255.397920 64382.3740 1.34% - 8s H 0 0 64749.000000 64382.3740 0.57% - 8s 0 0 64384.8667 0 3 64749.0000 64384.8667 0.56% - 9s H 0 0 64738.000000 64384.8667 0.55% - 9s 0 2 64385.5301 0 3 64738.0000 64385.5301 0.54% - 9s 2 3 64468.6714 2 2 64738.0000 64436.2564 0.47% 210 10s H 4 3 64699.538462 64474.4733 0.35% 188 10s H 5 4 64640.938095 64477.6584 0.25% 181 10s H 6 3 64636.520645 64478.0079 0.25% 174 10s H 7 3 64623.915220 64478.0079 0.23% 152 10s H 9 4 64604.250000 64478.0079 0.20% 120 10s * 12 5 11 64513.000000 64478.0079 0.05% 107 10s Cutting planes: Implied bound: 58 Explored 18 nodes (10218 simplex iterations) in 10.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.451300000000e+04, best bound 6.451300000000e+04, gap 0.0%