current bounds on the number of colors: 0 -- 212 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:16:42 2012 Optimize a model with 120946 rows, 23611 columns and 384674 nonzeros Presolve time: 0.42s Presolved: 120946 rows, 23611 columns, 384674 nonzeros Variable types: 0 continuous, 23611 integer (23611 binary) Root relaxation: objective 0.000000e+00, 556 iterations, 0.15 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 (1008 simplex iterations) in 0.74 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 -- 106 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:16:44 2012 Optimize a model with 60579 rows, 12375 columns and 192337 nonzeros Presolve time: 0.17s Presolved: 60579 rows, 12375 columns, 192337 nonzeros Variable types: 0 continuous, 12375 integer (12375 binary) Root relaxation: objective 0.000000e+00, 632 iterations, 0.04 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 (1098 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:16:45 2012 Optimize a model with 29826 rows, 6651 columns and 94354 nonzeros Presolve time: 0.12s Presolved: 29826 rows, 6651 columns, 94354 nonzeros Variable types: 0 continuous, 6651 integer (6651 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 (948 simplex iterations) in 0.19 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 14:16:45 2012 Optimize a model with 15019 rows, 3895 columns and 47177 nonzeros Presolve time: 0.05s Presolved: 15019 rows, 3895 columns, 47177 nonzeros Variable types: 0 continuous, 3895 integer (3895 binary) Root relaxation: objective 0.000000e+00, 455 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 (828 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 14:16:46 2012 Optimize a model with 7046 rows, 2411 columns and 21774 nonzeros Presolve time: 0.02s Presolved: 7046 rows, 2411 columns, 21774 nonzeros Variable types: 0 continuous, 2411 integer (2411 binary) Root relaxation: objective 0.000000e+00, 461 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 (2470 simplex iterations) in 0.14 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 14:16:46 2012 Optimize a model with 3629 rows, 1775 columns and 10887 nonzeros Presolve time: 0.01s Presolved: 3629 rows, 1775 columns, 10887 nonzeros Variable types: 0 continuous, 1775 integer (1775 binary) Root relaxation: objective 0.000000e+00, 473 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 0 346 - 0.00000 - - 0s 0 0 0.00000 0 414 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (7982 simplex iterations) in 1.07 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 14:16:47 2012 Optimize a model with 4768 rows, 1987 columns and 14516 nonzeros Presolve time: 0.01s Presolved: 4768 rows, 1987 columns, 14516 nonzeros Variable types: 0 continuous, 1987 integer (1987 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 0 416 - 0.00000 - - 0s 0 0 0.00000 0 402 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 1s 0 0 0.00000 0 407 - 0.00000 - - 1s 0 0 0.00000 0 396 - 0.00000 - - 2s 0 0 0.00000 0 398 - 0.00000 - - 3s 0 0 0.00000 0 394 - 0.00000 - - 4s 0 0 0.00000 0 394 - 0.00000 - - 5s 0 0 0.00000 0 413 - 0.00000 - - 6s 0 0 0.00000 0 394 - 0.00000 - - 7s 0 0 0.00000 0 392 - 0.00000 - - 8s 0 0 0.00000 0 392 - 0.00000 - - 9s 0 0 0.00000 0 392 - 0.00000 - - 9s 0 2 0.00000 0 392 - 0.00000 - - 11s 149 47 infeasible 18 - 0.00000 - 259 15s 361 62 infeasible 16 - 0.00000 - 238 20s 604 109 0.00000 12 550 - 0.00000 - 204 26s 606 110 0.00000 16 392 - 0.00000 - 203 31s 608 112 0.00000 26 401 - 0.00000 - 202 37s 609 112 0.00000 9 385 - 0.00000 - 202 40s 611 114 0.00000 17 362 - 0.00000 - 201 47s 612 114 0.00000 26 388 - 0.00000 - 201 51s 618 118 0.00000 13 455 - 0.00000 - 308 55s 634 129 0.00000 21 505 - 0.00000 - 309 60s 731 116 infeasible 25 - 0.00000 - 314 65s 846 82 0.00000 27 405 - 0.00000 - 323 70s 960 46 infeasible 26 - 0.00000 - 330 75s 1077 45 infeasible 27 - 0.00000 - 334 80s 1189 41 infeasible 28 - 0.00000 - 339 85s 1275 43 infeasible 25 - 0.00000 - 347 90s 1375 37 infeasible 23 - 0.00000 - 352 95s 1483 37 infeasible 28 - 0.00000 - 354 100s 1576 30 0.00000 22 487 - 0.00000 - 360 105s 1692 24 0.00000 21 462 - 0.00000 - 361 110s 1813 11 infeasible 21 - 0.00000 - 363 115s 1901 15 infeasible 29 - 0.00000 - 365 120s 1984 8 0.00000 22 382 - 0.00000 - 370 125s Cutting planes: Gomory: 2 Zero half: 15 Explored 2067 nodes (833927 simplex iterations) in 129.12 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 14:18:56 2012 Optimize a model with 5907 rows, 2199 columns and 18145 nonzeros Presolve time: 0.02s Presolved: 5907 rows, 2199 columns, 18145 nonzeros Variable types: 0 continuous, 2199 integer (2199 binary) Root relaxation: objective 0.000000e+00, 488 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 0 372 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (10018 simplex iterations) in 1.17 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