current bounds on the number of colors: 0 -- 202 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:57:25 2012 Optimize a model with 103323 rows, 21423 columns and 329765 nonzeros Presolve time: 0.34s Presolved: 103323 rows, 21423 columns, 329765 nonzeros Variable types: 0 continuous, 21423 integer (21423 binary) Root relaxation: objective 0.000000e+00, 796 iterations, 0.10 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 (1231 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 -- 101 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:57:27 2012 Optimize a model with 51252 rows, 11121 columns and 163250 nonzeros Presolve time: 0.17s Presolved: 51252 rows, 11121 columns, 163250 nonzeros Variable types: 0 continuous, 11121 integer (11121 binary) Root relaxation: objective 0.000000e+00, 726 iterations, 0.06 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 (1206 simplex iterations) in 0.30 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:57:28 2012 Optimize a model with 25727 rows, 6071 columns and 81625 nonzeros Presolve time: 0.11s Presolved: 25727 rows, 6071 columns, 81625 nonzeros Variable types: 0 continuous, 6071 integer (6071 binary) Root relaxation: objective 0.000000e+00, 475 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 (870 simplex iterations) in 0.16 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 09:57:28 2012 Optimize a model with 12454 rows, 3445 columns and 39180 nonzeros Presolve time: 0.04s Presolved: 12454 rows, 3445 columns, 39180 nonzeros Variable types: 0 continuous, 3445 integer (3445 binary) Root relaxation: objective 0.000000e+00, 417 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 (797 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 09:57:28 2012 Optimize a model with 6328 rows, 2233 columns and 19590 nonzeros Presolve time: 0.02s Presolved: 6328 rows, 2233 columns, 19590 nonzeros Variable types: 0 continuous, 2233 integer (2233 binary) Root relaxation: objective 0.000000e+00, 444 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 (1703 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:57:29 2012 Optimize a model with 3265 rows, 1627 columns and 9795 nonzeros Presolve time: 0.01s Presolved: 3265 rows, 1627 columns, 9795 nonzeros Variable types: 0 continuous, 1627 integer (1627 binary) Root relaxation: objective 0.000000e+00, 449 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 0 308 - 0.00000 - - 0s 0 0 0.00000 0 397 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (9293 simplex iterations) in 1.12 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 09:57:30 2012 Optimize a model with 4286 rows, 1829 columns and 13060 nonzeros Presolve time: 0.01s Presolved: 4286 rows, 1829 columns, 13060 nonzeros Variable types: 0 continuous, 1829 integer (1829 binary) Root relaxation: objective 0.000000e+00, 442 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 0 392 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 484 - 0.00000 - - 1s 0 0 0.00000 0 378 - 0.00000 - - 2s 0 0 0.00000 0 372 - 0.00000 - - 2s 0 0 0.00000 0 360 - 0.00000 - - 3s 0 0 0.00000 0 360 - 0.00000 - - 4s 0 0 0.00000 0 361 - 0.00000 - - 4s 0 0 0.00000 0 367 - 0.00000 - - 5s 0 0 0.00000 0 374 - 0.00000 - - 5s 0 0 0.00000 0 369 - 0.00000 - - 6s 0 2 0.00000 0 369 - 0.00000 - - 7s 233 42 0.00000 16 344 - 0.00000 - 160 10s 608 82 0.00000 19 519 - 0.00000 - 143 15s 610 83 0.00000 11 371 - 0.00000 - 143 20s 613 85 0.00000 13 366 - 0.00000 - 142 26s 615 87 0.00000 19 330 - 0.00000 - 142 31s 617 88 0.00000 10 308 - 0.00000 - 141 35s 619 89 0.00000 4 426 - 0.00000 - 141 40s 742 67 infeasible 29 - 0.00000 - 257 45s 892 23 0.00000 27 393 - 0.00000 - 268 50s 1059 26 infeasible 25 - 0.00000 - 274 55s 1223 30 infeasible 32 - 0.00000 - 278 60s 1393 26 0.00000 22 454 - 0.00000 - 281 65s 1557 32 infeasible 25 - 0.00000 - 284 70s 1686 21 0.00000 23 374 - 0.00000 - 291 75s 1846 9 infeasible 25 - 0.00000 - 293 80s Cutting planes: Clique: 3 Zero half: 31 Explored 1978 nodes (630858 simplex iterations) in 84.63 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 09:58:55 2012 Optimize a model with 5307 rows, 2031 columns and 16325 nonzeros Presolve time: 0.01s Presolved: 5307 rows, 2031 columns, 16325 nonzeros Variable types: 0 continuous, 2031 integer (2031 binary) Root relaxation: objective 0.000000e+00, 433 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 0 286 - 0.00000 - - 0s 0 0 0.00000 0 375 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 2s Explored 0 nodes (13822 simplex iterations) in 2.17 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% optimal solution found: number of colors: 5