Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:01:57 2013 Optimize a model with 836 rows, 57836 columns and 115596 nonzeros Presolve time: 0.08s Presolved: 836 rows, 57836 columns, 115596 nonzeros Variable types: 57760 continuous, 76 integer (76 binary) Root relaxation: objective 9.090831e+04, 2446 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 90908.3150 0 10 - 90908.3150 - - 0s H 0 0 98728.000000 90908.3150 7.92% - 0s 0 0 91131.2548 0 7 98728.0000 91131.2548 7.69% - 0s H 0 0 98130.000000 91131.2548 7.13% - 0s 0 0 91162.6809 0 5 98130.0000 91162.6809 7.10% - 0s H 0 0 93935.127210 91162.6809 2.95% - 0s H 0 0 93423.000000 91162.6809 2.42% - 0s 0 0 91166.0265 0 6 93423.0000 91166.0265 2.42% - 0s 0 0 91170.9389 0 4 93423.0000 91170.9389 2.41% - 0s H 0 0 93316.000000 91170.9389 2.30% - 0s 0 0 91173.8316 0 4 93316.0000 91173.8316 2.30% - 0s H 0 0 93299.000000 91173.8316 2.28% - 0s 0 0 91173.9332 0 5 93299.0000 91173.9332 2.28% - 1s 0 0 91174.0248 0 5 93299.0000 91174.0248 2.28% - 1s 0 0 91174.0248 0 5 93299.0000 91174.0248 2.28% - 1s 0 2 91181.9933 0 5 93299.0000 91181.9933 2.27% - 1s H 2 2 93154.144617 91225.4012 2.07% 40.0 1s H 9 9 92229.000000 91240.0682 1.07% 51.7 1s H 16 13 91848.000000 91240.0682 0.66% 37.2 2s H 17 8 91502.000000 91240.0682 0.29% 35.5 2s H 18 7 91500.000000 91240.0682 0.28% 33.9 2s * 19 7 18 91464.000000 91240.0682 0.24% 32.8 2s * 24 4 6 91399.000000 91295.6430 0.11% 35.5 2s Cutting planes: Implied bound: 130 Flow cover: 5 Explored 31 nodes (4067 simplex iterations) in 2.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.139900000000e+04, best bound 9.139850000000e+04, gap 0.0005%