current bounds on the number of colors: 0 -- 206 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:40:43 2012 Optimize a model with 109695 rows, 22281 columns and 349685 nonzeros Presolve time: 0.37s Presolved: 109695 rows, 22281 columns, 349685 nonzeros Variable types: 0 continuous, 22281 integer (22281 binary) Root relaxation: objective 0.000000e+00, 735 iterations, 0.08 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 (1184 simplex iterations) in 0.59 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:40:45 2012 Optimize a model with 54419 rows, 11569 columns and 173145 nonzeros Presolve time: 0.17s Presolved: 54419 rows, 11569 columns, 173145 nonzeros Variable types: 0 continuous, 11569 integer (11569 binary) Root relaxation: objective 0.000000e+00, 566 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 (966 simplex iterations) in 0.27 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:40:46 2012 Optimize a model with 26781 rows, 6213 columns and 84875 nonzeros Presolve time: 0.11s Presolved: 26781 rows, 6213 columns, 84875 nonzeros Variable types: 0 continuous, 6213 integer (6213 binary) Root relaxation: objective 0.000000e+00, 428 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 (1046 simplex iterations) in 0.18 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:40:46 2012 Optimize a model with 12962 rows, 3535 columns and 40740 nonzeros Presolve time: 0.04s Presolved: 12962 rows, 3535 columns, 40740 nonzeros Variable types: 0 continuous, 3535 integer (3535 binary) Root relaxation: objective 0.000000e+00, 440 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 (819 simplex iterations) in 0.07 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:40:47 2012 Optimize a model with 6584 rows, 2299 columns and 20370 nonzeros Presolve time: 0.02s Presolved: 6584 rows, 2299 columns, 20370 nonzeros Variable types: 0 continuous, 2299 integer (2299 binary) Root relaxation: objective 0.000000e+00, 463 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 (1260 simplex iterations) in 0.07 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 11:40:47 2012 Optimize a model with 3395 rows, 1681 columns and 10185 nonzeros Presolve time: 0.01s Presolved: 3395 rows, 1681 columns, 10185 nonzeros Variable types: 0 continuous, 1681 integer (1681 binary) Root relaxation: objective 0.000000e+00, 477 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 0 406 - 0.00000 - - 0s 0 0 0.00000 0 410 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (6066 simplex iterations) in 0.80 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 11:40:48 2012 Optimize a model with 4458 rows, 1887 columns and 13580 nonzeros Presolve time: 0.01s Presolved: 4458 rows, 1887 columns, 13580 nonzeros Variable types: 0 continuous, 1887 integer (1887 binary) Root relaxation: objective 0.000000e+00, 464 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 0 406 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 0s 0 0 0.00000 0 392 - 0.00000 - - 1s 0 0 0.00000 0 417 - 0.00000 - - 1s 0 0 0.00000 0 390 - 0.00000 - - 1s 0 0 0.00000 0 386 - 0.00000 - - 2s 0 0 0.00000 0 391 - 0.00000 - - 3s 0 0 0.00000 0 388 - 0.00000 - - 3s 0 0 0.00000 0 384 - 0.00000 - - 4s 0 0 0.00000 0 386 - 0.00000 - - 5s 0 0 0.00000 0 384 - 0.00000 - - 6s 0 0 0.00000 0 382 - 0.00000 - - 6s 0 0 0.00000 0 374 - 0.00000 - - 7s 0 0 0.00000 0 376 - 0.00000 - - 8s 0 0 0.00000 0 376 - 0.00000 - - 8s 0 2 0.00000 0 376 - 0.00000 - - 9s 21 9 0.00000 11 451 - 0.00000 - 386 10s 246 38 infeasible 14 - 0.00000 - 243 15s 497 27 infeasible 19 - 0.00000 - 222 20s 816 26 infeasible 10 - 0.00000 - 202 25s 905 49 0.00000 17 368 - 0.00000 - 202 32s 907 50 0.00000 12 358 - 0.00000 - 202 35s 909 51 0.00000 10 359 - 0.00000 - 202 40s 912 53 0.00000 11 336 - 0.00000 - 201 46s 966 59 infeasible 25 - 0.00000 - 265 50s 1085 13 infeasible 23 - 0.00000 - 278 55s 1233 15 infeasible 27 - 0.00000 - 284 60s 1345 9 infeasible 24 - 0.00000 - 295 65s Cutting planes: Zero half: 22 Explored 1421 nodes (488059 simplex iterations) in 68.28 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 11:41:56 2012 Optimize a model with 5521 rows, 2093 columns and 16975 nonzeros Presolve time: 0.01s Presolved: 5521 rows, 2093 columns, 16975 nonzeros Variable types: 0 continuous, 2093 integer (2093 binary) Root relaxation: objective 0.000000e+00, 441 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 0 388 - 0.00000 - - 0s 0 0 0.00000 0 353 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (12466 simplex iterations) in 1.65 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