Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:26:32 2013 Optimize a model with 3600 rows, 104300 columns and 214500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.62s Presolved: 3500 rows, 104200 columns, 212400 nonzeros Variable types: 102200 continuous, 2000 integer (2000 binary) Root relaxation: objective 8.951303e+05, 7607 iterations, 1.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 8 - 895130.293 - - 1s H 0 0 1195081.8309 895130.293 25.1% - 2s H 0 0 933499.15930 895130.293 4.11% - 3s 0 0 895195.032 0 8 933499.159 895195.032 4.10% - 3s 0 0 895217.960 0 8 933499.159 895217.960 4.10% - 4s 0 0 895240.502 0 8 933499.159 895240.502 4.10% - 4s 0 0 895240.661 0 8 933499.159 895240.661 4.10% - 5s 0 0 895240.821 0 8 933499.159 895240.821 4.10% - 5s 0 0 895242.656 0 8 933499.159 895242.656 4.10% - 6s 0 0 895246.053 0 8 933499.159 895246.053 4.10% - 6s 0 0 895246.543 0 8 933499.159 895246.543 4.10% - 7s 0 0 895246.619 0 8 933499.159 895246.619 4.10% - 7s 0 0 895247.184 0 8 933499.159 895247.184 4.10% - 8s 0 0 895248.311 0 8 933499.159 895248.311 4.10% - 8s 0 0 895248.697 0 8 933499.159 895248.697 4.10% - 9s 0 0 895249.198 0 8 933499.159 895249.198 4.10% - 9s 0 0 895249.198 0 8 933499.159 895249.198 4.10% - 10s 0 0 895249.198 0 8 933499.159 895249.198 4.10% - 10s 0 0 895249.198 0 8 933499.159 895249.198 4.10% - 11s 0 2 895249.198 0 8 933499.159 895249.198 4.10% - 12s 6 8 895526.232 3 2 933499.159 895526.232 4.07% 327 15s 21 23 904338.919 11 2 933499.159 895834.808 4.03% 267 20s H 27 27 917648.30155 896068.694 2.35% 247 22s 37 39 908564.395 19 4 917648.302 896211.734 2.34% 253 25s H 54 18 899942.46551 896211.734 0.41% 218 28s 63 15 896744.997 35 2 899942.466 896211.734 0.41% 192 30s 97 17 897427.393 65 2 899942.466 896211.734 0.41% 135 35s 126 17 cutoff 83 899942.466 896211.734 0.41% 122 40s 147 17 898640.056 102 2 899942.466 896211.734 0.41% 109 45s * 157 17 112 899927.12820 896211.734 0.41% 104 47s * 165 17 119 899906.77460 896211.734 0.41% 101 49s 169 17 899218.722 122 2 899906.775 896211.734 0.41% 99.1 50s * 181 14 134 899433.61993 896211.734 0.36% 93.0 51s 214 21 897802.223 20 2 899433.620 896211.734 0.36% 90.6 55s 284 26 896827.576 5 2 899433.620 896548.251 0.32% 79.1 60s * 294 8 10 896949.94038 896548.251 0.04% 79.2 60s * 302 3 11 896634.43616 896627.309 0.00% 79.0 62s Cutting planes: Implied bound: 17 Flow cover: 24 Explored 303 nodes (36452 simplex iterations) in 62.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.966273088528e+05, gap 0.0008%