Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:25:25 2012 Optimize a model with 1095 rows, 1080 columns and 3547 nonzeros Presolve removed 90 rows and 51 columns Presolve time: 0.01s Presolved: 1005 rows, 1029 columns, 3346 nonzeros Variable types: 680 continuous, 349 integer (349 binary) Root relaxation: objective 8.804065e+04, 506 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 88040.6513 0 176 - 88040.6513 - - 0s H 0 0 139428.00000 88040.6513 36.9% - 0s 0 0 109907.450 0 57 139428.000 109907.450 21.2% - 0s 0 0 111122.445 0 53 139428.000 111122.445 20.3% - 0s 0 0 111411.163 0 27 139428.000 111411.163 20.1% - 0s 0 0 111418.016 0 31 139428.000 111418.016 20.1% - 0s H 0 0 112109.00000 111418.016 0.62% - 0s 0 2 111418.350 0 31 112109.000 111418.350 0.62% - 0s H 54 52 111907.00000 111418.350 0.44% 3.8 0s * 331 245 69 111885.00000 111436.880 0.40% 4.0 0s H 600 167 111596.00000 111449.336 0.13% 4.2 0s * 826 165 50 111594.00000 111521.054 0.07% 4.9 0s * 1205 1 54 111583.00000 111582.600 0.00% 4.3 0s Cutting planes: Gomory: 7 Cover: 1 Implied bound: 1 Flow cover: 42 Flow path: 30 Explored 1206 nodes (6012 simplex iterations) in 0.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.115830000000e+05, best bound 1.115825998258e+05, gap 0.0004%