current bounds on the number of colors: 0 -- 214 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:33 2012 Optimize a model with 124227 rows, 24057 columns and 394937 nonzeros Presolve time: 0.43s Presolved: 124227 rows, 24057 columns, 394937 nonzeros Variable types: 0 continuous, 24057 integer (24057 binary) Root relaxation: objective 0.000000e+00, 575 iterations, 0.16 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 (1017 simplex iterations) in 0.76 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 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:36 2012 Optimize a model with 61641 rows, 12501 columns and 195623 nonzeros Presolve time: 0.17s Presolved: 61641 rows, 12501 columns, 195623 nonzeros Variable types: 0 continuous, 12501 integer (12501 binary) Root relaxation: objective 0.000000e+00, 823 iterations, 0.07 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 (1487 simplex iterations) in 0.38 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:37 2012 Optimize a model with 30348 rows, 6723 columns and 95966 nonzeros Presolve time: 0.13s Presolved: 30348 rows, 6723 columns, 95966 nonzeros Variable types: 0 continuous, 6723 integer (6723 binary) Root relaxation: objective 0.000000e+00, 518 iterations, 0.02 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 (1157 simplex iterations) in 0.21 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:37 2012 Optimize a model with 15281 rows, 3941 columns and 47983 nonzeros Presolve time: 0.05s Presolved: 15281 rows, 3941 columns, 47983 nonzeros Variable types: 0 continuous, 3941 integer (3941 binary) Root relaxation: objective 0.000000e+00, 448 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 (852 simplex iterations) in 0.08 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:38 2012 Optimize a model with 7168 rows, 2443 columns and 22146 nonzeros Presolve time: 0.02s Presolved: 7168 rows, 2443 columns, 22146 nonzeros Variable types: 0 continuous, 2443 integer (2443 binary) Root relaxation: objective 0.000000e+00, 450 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 92 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (5022 simplex iterations) in 0.45 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:38 2012 Optimize a model with 3691 rows, 1801 columns and 11073 nonzeros Presolve time: 0.01s Presolved: 3691 rows, 1801 columns, 11073 nonzeros Variable types: 0 continuous, 1801 integer (1801 binary) Root relaxation: objective 0.000000e+00, 472 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 0 422 - 0.00000 - - 0s 0 0 0.00000 0 422 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (6624 simplex iterations) in 1.01 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:58:39 2012 Optimize a model with 4850 rows, 2015 columns and 14764 nonzeros Presolve time: 0.01s Presolved: 4850 rows, 2015 columns, 14764 nonzeros Variable types: 0 continuous, 2015 integer (2015 binary) Root relaxation: objective 0.000000e+00, 479 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 0 424 - 0.00000 - - 0s 0 0 0.00000 0 424 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 1s 0 0 0.00000 0 616 - 0.00000 - - 1s 0 0 0.00000 0 378 - 0.00000 - - 4s 0 0 0.00000 0 374 - 0.00000 - - 5s 0 0 0.00000 0 391 - 0.00000 - - 6s 0 0 0.00000 0 402 - 0.00000 - - 7s 0 0 0.00000 0 378 - 0.00000 - - 9s 0 0 0.00000 0 376 - 0.00000 - - 9s 0 0 0.00000 0 376 - 0.00000 - - 10s 0 0 0.00000 0 376 - 0.00000 - - 11s 0 0 0.00000 0 376 - 0.00000 - - 12s 0 2 0.00000 0 376 - 0.00000 - - 13s 34 14 0.00000 3 518 - 0.00000 - 377 15s 229 79 0.00000 12 431 - 0.00000 - 245 20s 436 115 0.00000 15 496 - 0.00000 - 231 25s 655 135 0.00000 14 430 - 0.00000 - 225 30s 913 128 0.00000 16 398 - 0.00000 - 211 35s 1004 165 0.00000 22 600 - 0.00000 - 204 40s 1005 166 0.00000 12 395 - 0.00000 - 204 45s 1007 167 0.00000 12 372 - 0.00000 - 203 51s 1009 168 0.00000 13 390 - 0.00000 - 203 57s 1010 169 0.00000 12 372 - 0.00000 - 203 60s 1012 170 0.00000 9 374 - 0.00000 - 202 66s 1013 171 0.00000 17 384 - 0.00000 - 202 70s 1098 164 infeasible 26 - 0.00000 - 285 75s 1212 146 infeasible 22 - 0.00000 - 293 80s 1338 110 0.00000 24 413 - 0.00000 - 298 85s 1455 68 infeasible 26 - 0.00000 - 304 90s 1560 43 infeasible 21 - 0.00000 - 311 95s 1662 33 infeasible 24 - 0.00000 - 317 100s 1790 31 infeasible 28 - 0.00000 - 320 105s 1882 3 infeasible 25 - 0.00000 - 327 110s Cutting planes: Gomory: 1 Clique: 1 Zero half: 14 Explored 1900 nodes (691486 simplex iterations) in 111.22 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:00:31 2012 Optimize a model with 6009 rows, 2229 columns and 18455 nonzeros Presolve time: 0.02s Presolved: 6009 rows, 2229 columns, 18455 nonzeros Variable types: 0 continuous, 2229 integer (2229 binary) Root relaxation: objective 0.000000e+00, 457 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 0 418 - 0.00000 - - 0s 0 0 0.00000 0 392 - 0.00000 - - 0s 0 0 0.00000 0 426 - 0.00000 - - 1s 0 0 0.00000 0 501 - 0.00000 - - 1s 0 0 0.00000 0 453 - 0.00000 - - 2s 0 0 0.00000 0 521 - 0.00000 - - 3s 0 0 0.00000 0 521 - 0.00000 - - 4s 0 2 0.00000 0 443 - 0.00000 - - 5s * 202 2 50 0.0000000 0.00000 0.0% 100 7s Cutting planes: Gomory: 1 Clique: 1 Zero half: 12 Explored 203 nodes (46244 simplex iterations) in 7.03 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% optimal solution found: number of colors: 5