Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:02:01 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 9.031650e+04, 2166 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 90316.5025 0 5 - 90316.5025 - - 0s H 0 0 92882.000000 90316.5025 2.76% - 0s 0 0 90418.3194 0 4 92882.0000 90418.3194 2.65% - 0s 0 0 90428.8734 0 1 92882.0000 90428.8734 2.64% - 0s H 0 0 92415.373418 90428.8734 2.15% - 0s H 0 0 92215.000000 90428.8734 1.94% - 0s 0 0 90431.9972 0 2 92215.0000 90431.9972 1.93% - 0s 0 0 90431.9972 0 2 92215.0000 90431.9972 1.93% - 0s 0 0 90431.9972 0 2 92215.0000 90431.9972 1.93% - 0s 0 0 90435.5000 0 1 92215.0000 90435.5000 1.93% - 0s 0 0 90435.5000 0 1 92215.0000 90435.5000 1.93% - 0s 0 0 90435.5000 0 5 92215.0000 90435.5000 1.93% - 1s 0 0 90435.5000 0 4 92215.0000 90435.5000 1.93% - 1s 0 0 90435.5000 0 1 92215.0000 90435.5000 1.93% - 1s H 0 0 92196.000000 90435.5000 1.91% - 1s 0 0 90435.5000 0 2 92196.0000 90435.5000 1.91% - 1s 0 0 90435.5000 0 1 92196.0000 90435.5000 1.91% - 1s H 0 0 92184.000000 90435.5000 1.90% - 1s 0 0 90435.5000 0 1 92184.0000 90435.5000 1.90% - 1s H 0 0 92139.000000 90435.5000 1.85% - 1s 0 0 90435.5000 0 1 92139.0000 90435.5000 1.85% - 1s 0 0 90435.5000 0 1 92139.0000 90435.5000 1.85% - 1s 0 0 90435.5000 0 1 92139.0000 90435.5000 1.85% - 2s 0 2 90440.2598 0 1 92139.0000 90440.2598 1.84% - 2s H 5 4 90677.385827 90553.2934 0.14% 46.0 2s H 6 3 90656.753247 90553.2934 0.11% 46.0 2s H 7 2 90609.229167 90553.2934 0.06% 41.0 2s * 10 2 10 90604.000000 90553.2934 0.06% 33.7 2s Cutting planes: Implied bound: 98 Flow cover: 4 Explored 14 nodes (5133 simplex iterations) in 2.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.060400000000e+04, best bound 9.060400000000e+04, gap 0.0%