Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:15 2013 Optimize a model with 84 rows, 64 columns and 224 nonzeros Presolve removed 28 rows and 28 columns Presolve time: 0.00s Presolved: 56 rows, 36 columns, 168 nonzeros Variable types: 8 continuous, 28 integer (28 binary) Found heuristic solution: objective 952.0000000 Root relaxation: objective 3.700000e+02, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 370.00000 0 12 952.00000 370.00000 61.1% - 0s 0 0 493.15393 0 11 952.00000 493.15393 48.2% - 0s 0 0 498.40099 0 12 952.00000 498.40099 47.6% - 0s 0 0 500.10387 0 13 952.00000 500.10387 47.5% - 0s 0 0 500.10387 0 14 952.00000 500.10387 47.5% - 0s 0 0 500.10387 0 14 952.00000 500.10387 47.5% - 0s 0 2 500.12757 0 14 952.00000 500.12757 47.5% - 0s * 18 15 12 741.0000000 513.57685 30.7% 3.4 0s * 49 21 11 699.0000000 533.00000 23.7% 3.0 0s * 149 5 11 696.0000000 686.00000 1.44% 2.7 0s Cutting planes: Implied bound: 11 MIR: 21 Explored 157 nodes (474 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.960000000000e+02, best bound 6.960000000000e+02, gap 0.0%