current bounds on the number of colors: 0 -- 198 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:21:36 2012 Optimize a model with 95535 rows, 20565 columns and 305613 nonzeros Presolve time: 0.32s Presolved: 95535 rows, 20565 columns, 305613 nonzeros Variable types: 0 continuous, 20565 integer (20565 binary) Root relaxation: objective 0.000000e+00, 845 iterations, 0.11 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 (1321 simplex iterations) in 0.58 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 -- 99 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:21:37 2012 Optimize a model with 47385 rows, 10665 columns and 151263 nonzeros Presolve time: 0.16s Presolved: 47385 rows, 10665 columns, 151263 nonzeros Variable types: 0 continuous, 10665 integer (10665 binary) Root relaxation: objective 0.000000e+00, 560 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 (1139 simplex iterations) in 0.29 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:21:38 2012 Optimize a model with 23310 rows, 5715 columns and 74088 nonzeros Presolve time: 0.09s Presolved: 23310 rows, 5715 columns, 74088 nonzeros Variable types: 0 continuous, 5715 integer (5715 binary) Root relaxation: objective 0.000000e+00, 434 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 (803 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:21:39 2012 Optimize a model with 11754 rows, 3339 columns and 37044 nonzeros Presolve time: 0.04s Presolved: 11754 rows, 3339 columns, 37044 nonzeros Variable types: 0 continuous, 3339 integer (3339 binary) Root relaxation: objective 0.000000e+00, 430 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 (780 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 08:21:39 2012 Optimize a model with 5976 rows, 2151 columns and 18522 nonzeros Presolve time: 0.02s Presolved: 5976 rows, 2151 columns, 18522 nonzeros Variable types: 0 continuous, 2151 integer (2151 binary) Root relaxation: objective 0.000000e+00, 413 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 (1826 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 08:21:39 2012 Optimize a model with 3087 rows, 1557 columns and 9261 nonzeros Presolve time: 0.01s Presolved: 3087 rows, 1557 columns, 9261 nonzeros Variable types: 0 continuous, 1557 integer (1557 binary) Root relaxation: objective 0.000000e+00, 465 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 0 394 - 0.00000 - - 0s 0 0 0.00000 0 522 - 0.00000 - - 1s 0 0 0.00000 0 560 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 1003 Explored 0 nodes (9454 simplex iterations) in 1.62 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 08:21:41 2012 Optimize a model with 4050 rows, 1755 columns and 12348 nonzeros Presolve time: 0.01s Presolved: 4050 rows, 1755 columns, 12348 nonzeros Variable types: 0 continuous, 1755 integer (1755 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 0 380 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 0.00000 0 376 - 0.00000 - - 1s 0 0 0.00000 0 364 - 0.00000 - - 1s 0 0 0.00000 0 368 - 0.00000 - - 1s 0 0 0.00000 0 358 - 0.00000 - - 2s 0 0 0.00000 0 356 - 0.00000 - - 2s 0 0 0.00000 0 366 - 0.00000 - - 3s 0 0 0.00000 0 346 - 0.00000 - - 4s 0 0 0.00000 0 344 - 0.00000 - - 4s 0 0 0.00000 0 344 - 0.00000 - - 5s 0 0 0.00000 0 348 - 0.00000 - - 5s 0 0 0.00000 0 348 - 0.00000 - - 6s 0 2 0.00000 0 348 - 0.00000 - - 6s 345 53 infeasible 28 - 0.00000 - 141 10s 713 68 0.00000 25 366 - 0.00000 - 135 15s 716 70 0.00000 17 356 - 0.00000 - 135 20s 719 72 0.00000 15 356 - 0.00000 - 134 25s 721 73 0.00000 18 356 - 0.00000 - 134 30s 969 22 0.00000 19 350 - 0.00000 - 212 35s 1236 31 0.00000 19 348 - 0.00000 - 219 40s 1522 19 infeasible 22 - 0.00000 - 223 45s 1764 21 0.00000 28 340 - 0.00000 - 230 50s 2002 17 0.00000 18 350 - 0.00000 - 236 55s 2278 11 0.00000 21 416 - 0.00000 - 238 60s Cutting planes: Gomory: 3 Zero half: 19 Explored 2328 nodes (606336 simplex iterations) in 61.20 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 08:22:42 2012 Optimize a model with 5013 rows, 1953 columns and 15435 nonzeros Presolve time: 0.01s Presolved: 5013 rows, 1953 columns, 15435 nonzeros Variable types: 0 continuous, 1953 integer (1953 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 0.00000 0 372 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 139 Zero half: 438 Explored 0 nodes (3339 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% optimal solution found: number of colors: 5