current bounds on the number of colors: 0 -- 184 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:08 2012 Optimize a model with 79580 rows, 17791 columns and 255116 nonzeros Presolve time: 0.25s Presolved: 79580 rows, 17791 columns, 255116 nonzeros Variable types: 0 continuous, 17791 integer (17791 binary) Root relaxation: objective 0.000000e+00, 619 iterations, 0.05 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 (1010 simplex iterations) in 0.41 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:09 2012 Optimize a model with 39882 rows, 9327 columns and 127558 nonzeros Presolve time: 0.16s Presolved: 39882 rows, 9327 columns, 127558 nonzeros Variable types: 0 continuous, 9327 integer (9327 binary) Root relaxation: objective 0.000000e+00, 591 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 (1000 simplex iterations) in 0.24 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:10 2012 Optimize a model with 20033 rows, 5095 columns and 63779 nonzeros Presolve time: 0.08s Presolved: 20033 rows, 5095 columns, 63779 nonzeros Variable types: 0 continuous, 5095 integer (5095 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (806 simplex iterations) in 0.12 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:10 2012 Optimize a model with 9677 rows, 2887 columns and 30503 nonzeros Presolve time: 0.03s Presolved: 9677 rows, 2887 columns, 30503 nonzeros Variable types: 0 continuous, 2887 integer (2887 binary) Root relaxation: objective 0.000000e+00, 382 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 (719 simplex iterations) in 0.05 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:10 2012 Optimize a model with 4499 rows, 1783 columns and 13865 nonzeros Presolve time: 0.01s Presolved: 4499 rows, 1783 columns, 13865 nonzeros Variable types: 0 continuous, 1783 integer (1783 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 0.00000 0 340 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 6 Clique: 129 Zero half: 351 Explored 0 nodes (3512 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:11 2012 Optimize a model with 1910 rows, 1231 columns and 5546 nonzeros Presolve removed 184 rows and 184 columns Presolve time: 0.00s Presolved: 1726 rows, 1047 columns, 5178 nonzeros Variable types: 0 continuous, 1047 integer (1047 binary) Root relaxation: objective 0.000000e+00, 198 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 184 - 0.00000 - - 0s Explored 0 nodes (770 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:11 2012 Optimize a model with 2773 rows, 1415 columns and 8319 nonzeros Presolve time: 0.01s Presolved: 2773 rows, 1415 columns, 8319 nonzeros Variable types: 0 continuous, 1415 integer (1415 binary) Root relaxation: objective 0.000000e+00, 393 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 0 264 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (8051 simplex iterations) in 0.84 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:44:12 2012 Optimize a model with 3636 rows, 1599 columns and 11092 nonzeros Presolve time: 0.01s Presolved: 3636 rows, 1599 columns, 11092 nonzeros Variable types: 0 continuous, 1599 integer (1599 binary) Root relaxation: objective 0.000000e+00, 423 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 0 350 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 0.00000 0 353 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 1s 0 0 0.00000 0 334 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 312 - 0.00000 - - 3s 0 0 0.00000 0 304 - 0.00000 - - 4s 0 0 0.00000 0 310 - 0.00000 - - 4s 0 0 0.00000 0 290 - 0.00000 - - 5s 0 0 0.00000 0 284 - 0.00000 - - 5s 0 0 0.00000 0 286 - 0.00000 - - 6s 0 0 0.00000 0 286 - 0.00000 - - 6s 0 2 0.00000 0 286 - 0.00000 - - 7s 400 24 infeasible 23 - 0.00000 - 115 10s 805 39 0.00000 17 324 - 0.00000 - 108 16s 808 41 0.00000 15 310 - 0.00000 - 107 20s 812 43 0.00000 16 290 - 0.00000 - 107 25s 816 46 0.00000 13 272 - 0.00000 - 106 30s 897 52 infeasible 25 - 0.00000 - 191 35s 1156 87 infeasible 25 - 0.00000 - 201 40s 1429 92 infeasible 26 - 0.00000 - 209 45s 1679 96 infeasible 23 - 0.00000 - 217 50s 1937 100 infeasible 24 - 0.00000 - 222 55s 2196 105 0.00000 23 312 - 0.00000 - 226 60s 2417 110 infeasible 19 - 0.00000 - 231 65s 2651 110 0.00000 23 322 - 0.00000 - 235 70s 2893 98 infeasible 23 - 0.00000 - 237 75s 3094 97 infeasible 26 - 0.00000 - 242 80s 3313 100 0.00000 22 304 - 0.00000 - 244 85s 3555 100 0.00000 17 320 - 0.00000 - 246 90s 3776 97 infeasible 24 - 0.00000 - 248 95s 3997 100 infeasible 25 - 0.00000 - 250 100s 4199 94 infeasible 23 - 0.00000 - 252 105s 4414 87 0.00000 21 421 - 0.00000 - 254 110s 4616 73 0.00000 22 385 - 0.00000 - 256 115s 4838 55 infeasible 21 - 0.00000 - 257 120s 5078 39 infeasible 18 - 0.00000 - 258 125s 5362 39 infeasible 21 - 0.00000 - 256 130s 5564 17 0.00000 21 396 - 0.00000 - 258 135s Cutting planes: Gomory: 1 Zero half: 8 Explored 5712 nodes (1536036 simplex iterations) in 138.52 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5