Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:38:44 2013 Optimize a model with 2951 rows, 676 columns and 9126 nonzeros Presolve removed 445 rows and 340 columns Presolve time: 0.03s Presolved: 2506 rows, 336 columns, 7883 nonzeros Variable types: 16 continuous, 320 integer (320 binary) Found heuristic solution: objective 11067.000000 Root relaxation: objective 7.744958e+03, 2320 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7744.95833 0 10 11067.0000 7744.95833 30.0% - 0s H 0 0 7769.0000000 7744.95833 0.31% - 0s H 0 0 7759.0000000 7744.95833 0.18% - 0s 0 0 7745.00350 0 26 7759.00000 7745.00350 0.18% - 0s 0 0 7745.00350 0 8 7759.00000 7745.00350 0.18% - 0s 0 0 7745.00350 0 26 7759.00000 7745.00350 0.18% - 0s 0 0 7745.00633 0 26 7759.00000 7745.00633 0.18% - 0s 0 0 7745.35688 0 28 7759.00000 7745.35688 0.18% - 0s 0 0 7745.78958 0 31 7759.00000 7745.78958 0.17% - 0s 0 0 7745.92972 0 31 7759.00000 7745.92972 0.17% - 0s 0 0 7746.09688 0 31 7759.00000 7746.09688 0.17% - 0s 0 0 7746.22467 0 32 7759.00000 7746.22467 0.16% - 0s 0 0 7746.29864 0 37 7759.00000 7746.29864 0.16% - 0s 0 0 7746.37328 0 36 7759.00000 7746.37328 0.16% - 0s 0 0 7746.53527 0 35 7759.00000 7746.53527 0.16% - 0s 0 0 7746.55940 0 35 7759.00000 7746.55940 0.16% - 0s 0 0 7746.57418 0 34 7759.00000 7746.57418 0.16% - 0s 0 0 7746.57498 0 32 7759.00000 7746.57498 0.16% - 0s 0 0 7746.57504 0 36 7759.00000 7746.57504 0.16% - 0s H 0 0 7754.0000000 7746.57504 0.10% - 0s 0 2 7746.58335 0 36 7754.00000 7746.58335 0.10% - 0s H 15 12 7750.0000000 7747.15502 0.04% 11.3 0s Cutting planes: MIR: 36 Mod-K: 1 Explored 49 nodes (3500 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.750000000000e+03, best bound 7.750000000000e+03, gap 0.0%