Gurobi 5.0.1 (linux64) logging started Tue Apr 23 22:02:08 2013 Optimize a model with 75 rows, 1275 columns and 2525 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 75 rows, 1274 columns, 2524 nonzeros Variable types: 1250 continuous, 24 integer (24 binary) Root relaxation: objective 8.259821e+05, 33 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 825982.088 0 19 - 825982.088 - - 0s H 0 0 976874.17500 825982.088 15.4% - 0s 0 0 896514.704 0 12 976874.175 896514.704 8.23% - 0s 0 0 909578.489 0 9 976874.175 909578.489 6.89% - 0s 0 0 910470.658 0 3 976874.175 910470.658 6.80% - 0s H 0 0 929458.50779 910470.658 2.04% - 0s H 0 0 910889.56250 910470.658 0.05% - 0s 0 0 910623.027 0 3 910889.562 910623.027 0.03% - 0s 0 0 910716.009 0 1 910889.562 910716.009 0.02% - 0s 0 0 910740.052 0 3 910889.562 910740.052 0.02% - 0s 0 0 cutoff 0 910889.562 910889.562 0.0% - 0s Cutting planes: Implied bound: 56 Flow cover: 2 Explored 0 nodes (157 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.108895625000e+05, best bound 9.108895625000e+05, gap 0.0%