Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:14:16 2013 Optimize a model with 833 rows, 289 columns and 2601 nonzeros Presolve removed 199 rows and 145 columns Presolve time: 0.00s Presolved: 634 rows, 144 columns, 2070 nonzeros Variable types: 12 continuous, 132 integer (132 binary) Found heuristic solution: objective 4524.0000000 Root relaxation: objective 3.115375e+03, 58 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3115.37500 0 10 4524.00000 3115.37500 31.1% - 0s H 0 0 3131.0000000 3115.37500 0.50% - 0s 0 0 3117.08935 0 19 3131.00000 3117.08935 0.44% - 0s 0 0 3117.08935 0 11 3131.00000 3117.08935 0.44% - 0s 0 0 3117.38773 0 22 3131.00000 3117.38773 0.43% - 0s H 0 0 3130.0000000 3117.38773 0.40% - 0s 0 0 3117.90129 0 25 3130.00000 3117.90129 0.39% - 0s 0 0 3118.55714 0 25 3130.00000 3118.55714 0.37% - 0s 0 0 3119.05315 0 29 3130.00000 3119.05315 0.35% - 0s 0 0 3119.22078 0 29 3130.00000 3119.22078 0.34% - 0s 0 0 3119.71374 0 28 3130.00000 3119.71374 0.33% - 0s 0 0 3119.77016 0 31 3130.00000 3119.77016 0.33% - 0s 0 0 3119.81447 0 29 3130.00000 3119.81447 0.33% - 0s 0 0 3119.83250 0 29 3130.00000 3119.83250 0.32% - 0s 0 2 3119.86174 0 29 3130.00000 3119.86174 0.32% - 0s * 16 11 12 3126.0000000 3120.47294 0.18% 5.3 0s H 27 12 3124.0000000 3120.93057 0.10% 5.6 0s * 35 2 5 3122.0000000 3121.56786 0.01% 5.5 0s Cutting planes: MIR: 27 Explored 36 nodes (538 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.122000000000e+03, best bound 3.122000000000e+03, gap 0.0%