current bounds on the number of colors: 0 -- 203 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:27:59 2012 Optimize a model with 107364 rows, 21564 columns and 341986 nonzeros Presolve time: 0.36s Presolved: 107364 rows, 21564 columns, 341986 nonzeros Variable types: 0 continuous, 21564 integer (21564 binary) Root relaxation: objective 0.000000e+00, 840 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 (1298 simplex iterations) in 0.62 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 10:28:01 2012 Optimize a model with 53253 rows, 11211 columns and 169300 nonzeros Presolve time: 0.16s Presolved: 53253 rows, 11211 columns, 169300 nonzeros Variable types: 0 continuous, 11211 integer (11211 binary) Root relaxation: objective 0.000000e+00, 656 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 (1141 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:28:02 2012 Optimize a model with 26728 rows, 6136 columns and 84650 nonzeros Presolve time: 0.11s Presolved: 26728 rows, 6136 columns, 84650 nonzeros Variable types: 0 continuous, 6136 integer (6136 binary) Root relaxation: objective 0.000000e+00, 446 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 (836 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 10:28:02 2012 Optimize a model with 12935 rows, 3497 columns and 40632 nonzeros Presolve time: 0.04s Presolved: 12935 rows, 3497 columns, 40632 nonzeros Variable types: 0 continuous, 3497 integer (3497 binary) Root relaxation: objective 0.000000e+00, 416 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 (802 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 10:28:02 2012 Optimize a model with 6569 rows, 2279 columns and 20316 nonzeros Presolve time: 0.02s Presolved: 6569 rows, 2279 columns, 20316 nonzeros Variable types: 0 continuous, 2279 integer (2279 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1590 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 10:28:02 2012 Optimize a model with 3386 rows, 1670 columns and 10158 nonzeros Presolve time: 0.01s Presolved: 3386 rows, 1670 columns, 10158 nonzeros Variable types: 0 continuous, 1670 integer (1670 binary) Root relaxation: objective 0.000000e+00, 454 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 0 296 - 0.00000 - - 0s 0 0 0.00000 0 404 - 0.00000 - - 0s 0 0 0.00000 0 556 - 0.00000 - - 1s 0 0 0.00000 0 558 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 1 Zero half: 1344 Explored 0 nodes (11048 simplex iterations) in 1.91 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 10:28:04 2012 Optimize a model with 4447 rows, 1873 columns and 13544 nonzeros Presolve time: 0.01s Presolved: 4447 rows, 1873 columns, 13544 nonzeros Variable types: 0 continuous, 1873 integer (1873 binary) Root relaxation: objective 0.000000e+00, 489 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 0 402 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 1s 0 0 0.00000 0 503 - 0.00000 - - 1s 0 0 0.00000 0 375 - 0.00000 - - 2s 0 0 0.00000 0 356 - 0.00000 - - 3s 0 0 0.00000 0 354 - 0.00000 - - 3s 0 0 0.00000 0 354 - 0.00000 - - 4s 0 0 0.00000 0 344 - 0.00000 - - 5s 0 0 0.00000 0 350 - 0.00000 - - 6s 0 0 0.00000 0 353 - 0.00000 - - 6s 0 0 0.00000 0 349 - 0.00000 - - 7s 0 0 0.00000 0 346 - 0.00000 - - 8s 0 0 0.00000 0 316 - 0.00000 - - 9s 0 0 0.00000 0 308 - 0.00000 - - 10s 0 0 0.00000 0 306 - 0.00000 - - 11s 0 0 0.00000 0 306 - 0.00000 - - 11s 0 0 0.00000 0 306 - 0.00000 - - 12s 0 2 0.00000 0 306 - 0.00000 - - 13s 41 9 0.00000 9 475 - 0.00000 - 302 15s 321 51 0.00000 22 372 - 0.00000 - 206 20s 603 60 0.00000 16 386 - 0.00000 - 193 25s 605 62 0.00000 18 362 - 0.00000 - 193 30s 608 64 0.00000 16 352 - 0.00000 - 192 36s 610 65 0.00000 20 350 - 0.00000 - 191 41s 612 66 0.00000 12 366 - 0.00000 - 190 47s 662 60 infeasible 21 - 0.00000 - 292 50s 827 29 infeasible 23 - 0.00000 - 293 55s 974 10 0.00000 21 402 - 0.00000 - 300 60s 1123 5 0.00000 22 380 - 0.00000 - 304 65s Cutting planes: Clique: 1 Zero half: 7 Explored 1153 nodes (433854 simplex iterations) in 65.96 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 10:29:11 2012 Optimize a model with 5508 rows, 2076 columns and 16930 nonzeros Presolve time: 0.02s Presolved: 5508 rows, 2076 columns, 16930 nonzeros Variable types: 0 continuous, 2076 integer (2076 binary) Root relaxation: objective 0.000000e+00, 443 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 0 384 - 0.00000 - - 0s 0 0 0.00000 0 374 - 0.00000 - - 0s Cutting planes: Clique: 18 Zero half: 5 Explored 0 nodes (5076 simplex iterations) in 0.47 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