current bounds on the number of colors: 0 -- 206 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:38:58 2012 Optimize a model with 110004 rows, 22284 columns and 350612 nonzeros Presolve time: 0.37s Presolved: 110004 rows, 22284 columns, 350612 nonzeros Variable types: 0 continuous, 22284 integer (22284 binary) Root relaxation: objective 0.000000e+00, 762 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 (1260 simplex iterations) in 0.63 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 11:39:00 2012 Optimize a model with 54572 rows, 11572 columns and 173604 nonzeros Presolve time: 0.16s Presolved: 54572 rows, 11572 columns, 173604 nonzeros Variable types: 0 continuous, 11572 integer (11572 binary) Root relaxation: objective 0.000000e+00, 553 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 (999 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 11:39:01 2012 Optimize a model with 26856 rows, 6216 columns and 85100 nonzeros Presolve time: 0.11s Presolved: 26856 rows, 6216 columns, 85100 nonzeros Variable types: 0 continuous, 6216 integer (6216 binary) Root relaxation: objective 0.000000e+00, 447 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 (827 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 11:39:01 2012 Optimize a model with 12998 rows, 3538 columns and 40848 nonzeros Presolve time: 0.04s Presolved: 12998 rows, 3538 columns, 40848 nonzeros Variable types: 0 continuous, 3538 integer (3538 binary) Root relaxation: objective 0.000000e+00, 426 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 (820 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 11:39:02 2012 Optimize a model with 6602 rows, 2302 columns and 20424 nonzeros Presolve time: 0.02s Presolved: 6602 rows, 2302 columns, 20424 nonzeros Variable types: 0 continuous, 2302 integer (2302 binary) Root relaxation: objective 0.000000e+00, 436 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 6 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1977 simplex iterations) in 0.09 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 11:39:02 2012 Optimize a model with 3404 rows, 1684 columns and 10212 nonzeros Presolve time: 0.01s Presolved: 3404 rows, 1684 columns, 10212 nonzeros Variable types: 0 continuous, 1684 integer (1684 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 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 410 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (6644 simplex iterations) in 0.83 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 11:39:03 2012 Optimize a model with 4470 rows, 1890 columns and 13616 nonzeros Presolve time: 0.01s Presolved: 4470 rows, 1890 columns, 13616 nonzeros Variable types: 0 continuous, 1890 integer (1890 binary) Root relaxation: objective 0.000000e+00, 460 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 0 400 - 0.00000 - - 0s 0 0 0.00000 0 392 - 0.00000 - - 1s 0 0 0.00000 0 517 - 0.00000 - - 1s 0 0 0.00000 0 384 - 0.00000 - - 2s 0 0 0.00000 0 408 - 0.00000 - - 2s 0 0 0.00000 0 374 - 0.00000 - - 3s 0 0 0.00000 0 364 - 0.00000 - - 4s 0 0 0.00000 0 371 - 0.00000 - - 4s 0 0 0.00000 0 364 - 0.00000 - - 5s 0 0 0.00000 0 360 - 0.00000 - - 6s 0 0 0.00000 0 348 - 0.00000 - - 6s 0 0 0.00000 0 352 - 0.00000 - - 7s 0 0 0.00000 0 354 - 0.00000 - - 8s 0 0 0.00000 0 352 - 0.00000 - - 8s 0 2 0.00000 0 352 - 0.00000 - - 9s 20 8 0.00000 7 447 - 0.00000 - 337 10s 260 36 infeasible 23 - 0.00000 - 213 15s 529 24 0.00000 20 348 - 0.00000 - 206 20s 780 9 0.00000 16 446 - 0.00000 - 207 25s 907 22 0.00000 0 376 - 0.00000 - 203 32s 909 23 0.00000 0 368 - 0.00000 - 203 36s 911 24 0.00000 0 356 - 0.00000 - 202 41s 913 26 0.00000 0 360 - 0.00000 - 202 45s 915 27 0.00000 0 340 - 0.00000 - 201 50s 917 28 0.00000 0 334 - 0.00000 - 201 55s 921 31 infeasible 15 - 0.00000 - 291 60s 930 35 0.00000 19 508 - 0.00000 - 291 65s 1005 37 infeasible 25 - 0.00000 - 294 70s 1113 25 infeasible 26 - 0.00000 - 306 75s 1222 36 infeasible 24 - 0.00000 - 315 80s 1344 30 infeasible 23 - 0.00000 - 319 85s 1437 13 0.00000 26 400 - 0.00000 - 328 90s 1553 5 0.00000 23 366 - 0.00000 - 333 95s Cutting planes: Zero half: 11 Explored 1599 nodes (594177 simplex iterations) in 97.03 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 11:40:40 2012 Optimize a model with 5536 rows, 2096 columns and 17020 nonzeros Presolve time: 0.02s Presolved: 5536 rows, 2096 columns, 17020 nonzeros Variable types: 0 continuous, 2096 integer (2096 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 0 382 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 191 Zero half: 427 Explored 0 nodes (5579 simplex iterations) in 0.55 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