current bounds on the number of colors: 0 -- 124 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:00:47 2012 Optimize a model with 48360 rows, 8466 columns and 152396 nonzeros Presolve time: 0.16s Presolved: 48360 rows, 8466 columns, 152396 nonzeros Variable types: 0 continuous, 8466 integer (8466 binary) Root relaxation: objective 0.000000e+00, 310 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (583 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 62 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:00:48 2012 Optimize a model with 24242 rows, 4622 columns and 76198 nonzeros Presolve time: 0.11s Presolved: 24242 rows, 4622 columns, 76198 nonzeros Variable types: 0 continuous, 4622 integer (4622 binary) Root relaxation: objective 0.000000e+00, 299 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (577 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 31 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:00:49 2012 Optimize a model with 11794 rows, 2638 columns and 36870 nonzeros Presolve time: 0.04s Presolved: 11794 rows, 2638 columns, 36870 nonzeros Variable types: 0 continuous, 2638 integer (2638 binary) Root relaxation: objective 0.000000e+00, 254 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (489 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:00:49 2012 Optimize a model with 5570 rows, 1646 columns and 17206 nonzeros Presolve time: 0.01s Presolved: 5570 rows, 1646 columns, 17206 nonzeros Variable types: 0 continuous, 1646 integer (1646 binary) Root relaxation: objective 0.000000e+00, 269 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1058 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:00:49 2012 Optimize a model with 2458 rows, 1150 columns and 7374 nonzeros Presolve time: 0.01s Presolved: 2458 rows, 1150 columns, 7374 nonzeros Variable types: 0 continuous, 1150 integer (1150 binary) Root relaxation: objective 0.000000e+00, 274 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4122 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:00:49 2012 Optimize a model with 4014 rows, 1398 columns and 12290 nonzeros Presolve time: 0.01s Presolved: 4014 rows, 1398 columns, 12290 nonzeros Variable types: 0 continuous, 1398 integer (1398 binary) Root relaxation: objective 0.000000e+00, 257 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 244 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 0.00000 0 313 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 1s 0 0 0.00000 0 294 - 0.00000 - - 1s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 0 0.00000 0 331 - 0.00000 - - 2s 0 0 0.00000 0 331 - 0.00000 - - 3s 0 2 0.00000 0 331 - 0.00000 - - 3s 328 35 infeasible 29 - 0.00000 - 73.3 5s 607 52 0.00000 6 268 - 0.00000 - 72.3 10s 612 55 0.00000 5 270 - 0.00000 - 71.8 15s 886 50 0.00000 28 247 - 0.00000 - 150 20s 1236 64 infeasible 31 - 0.00000 - 169 25s 1623 91 0.00000 21 270 - 0.00000 - 176 30s 1992 78 infeasible 32 - 0.00000 - 183 35s 2402 92 infeasible 27 - 0.00000 - 185 40s 2804 110 infeasible 31 - 0.00000 - 186 45s 3269 111 infeasible 33 - 0.00000 - 186 50s 3683 123 infeasible 32 - 0.00000 - 186 55s 4098 182 0.00000 32 198 - 0.00000 - 186 60s 4524 234 infeasible 31 - 0.00000 - 186 65s 4925 261 0.00000 23 232 - 0.00000 - 186 70s 5301 267 0.00000 26 260 - 0.00000 - 188 75s 5658 276 infeasible 32 - 0.00000 - 189 80s * 5709 0 31 0.0000000 0.00000 0.0% 189 80s Cutting planes: Clique: 1 Zero half: 4 Explored 5710 nodes (1104874 simplex iterations) in 80.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:02:10 2012 Optimize a model with 3236 rows, 1274 columns and 9832 nonzeros Presolve time: 0.01s Presolved: 3236 rows, 1274 columns, 9832 nonzeros Variable types: 0 continuous, 1274 integer (1274 binary) Root relaxation: objective 0.000000e+00, 271 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 244 - 0.00000 - - 0s 0 0 0.00000 0 242 - 0.00000 - - 0s 0 0 0.00000 0 343 - 0.00000 - - 1s 0 0 0.00000 0 347 - 0.00000 - - 1s 0 0 0.00000 0 341 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 347 - 0.00000 - - 4s 0 0 0.00000 0 359 - 0.00000 - - 4s 0 0 0.00000 0 358 - 0.00000 - - 5s 0 2 0.00000 0 358 - 0.00000 - - 5s Cutting planes: Clique: 8 Zero half: 30 Explored 32 nodes (38462 simplex iterations) in 6.79 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5