current bounds on the number of colors: 0 -- 191 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:17:39 2012 Optimize a model with 90631 rows, 19097 columns and 289465 nonzeros Presolve time: 0.29s Presolved: 90631 rows, 19097 columns, 289465 nonzeros Variable types: 0 continuous, 19097 integer (19097 binary) Root relaxation: objective 0.000000e+00, 811 iterations, 0.10 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 (1276 simplex iterations) in 0.52 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:17:40 2012 Optimize a model with 44935 rows, 9929 columns and 143209 nonzeros Presolve time: 0.15s Presolved: 44935 rows, 9929 columns, 143209 nonzeros Variable types: 0 continuous, 9929 integer (9929 binary) Root relaxation: objective 0.000000e+00, 550 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 (989 simplex iterations) in 0.25 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:17:41 2012 Optimize a model with 22087 rows, 5345 columns and 70081 nonzeros Presolve time: 0.09s Presolved: 22087 rows, 5345 columns, 70081 nonzeros Variable types: 0 continuous, 5345 integer (5345 binary) Root relaxation: objective 0.000000e+00, 414 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 (759 simplex iterations) in 0.13 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 05:17:41 2012 Optimize a model with 10663 rows, 3053 columns and 33517 nonzeros Presolve time: 0.03s Presolved: 10663 rows, 3053 columns, 33517 nonzeros Variable types: 0 continuous, 3053 integer (3053 binary) Root relaxation: objective 0.000000e+00, 402 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 (1036 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:17:42 2012 Optimize a model with 4951 rows, 1907 columns and 15235 nonzeros Presolve time: 0.01s Presolved: 4951 rows, 1907 columns, 15235 nonzeros Variable types: 0 continuous, 1907 integer (1907 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 0.00000 0 162 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3890 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:17:42 2012 Optimize a model with 2095 rows, 1334 columns and 6094 nonzeros Presolve removed 191 rows and 191 columns Presolve time: 0.01s Presolved: 1904 rows, 1143 columns, 5712 nonzeros Variable types: 0 continuous, 1143 integer (1143 binary) Root relaxation: objective 0.000000e+00, 194 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 0 191 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (832 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 05:17:42 2012 Optimize a model with 3047 rows, 1525 columns and 9141 nonzeros Presolve time: 0.01s Presolved: 3047 rows, 1525 columns, 9141 nonzeros Variable types: 0 continuous, 1525 integer (1525 binary) Root relaxation: objective 0.000000e+00, 414 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 0 378 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4856 simplex iterations) in 0.68 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 05:17:43 2012 Optimize a model with 3999 rows, 1716 columns and 12188 nonzeros Presolve time: 0.01s Presolved: 3999 rows, 1716 columns, 12188 nonzeros Variable types: 0 continuous, 1716 integer (1716 binary) Root relaxation: objective 0.000000e+00, 441 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 0 378 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 354 - 0.00000 - - 1s 0 0 0.00000 0 352 - 0.00000 - - 1s 0 0 0.00000 0 447 - 0.00000 - - 2s 0 0 0.00000 0 469 - 0.00000 - - 3s 0 0 0.00000 0 429 - 0.00000 - - 4s 0 0 0.00000 0 429 - 0.00000 - - 5s 0 0 0.00000 0 429 - 0.00000 - - 5s 0 2 0.00000 0 429 - 0.00000 - - 6s 259 31 infeasible 19 - 0.00000 - 173 10s 663 59 0.00000 8 366 - 0.00000 - 166 15s 812 81 0.00000 10 342 - 0.00000 - 163 20s 816 84 0.00000 8 318 - 0.00000 - 162 26s 818 85 0.00000 9 406 - 0.00000 - 161 30s 821 87 0.00000 18 413 - 0.00000 - 161 37s 823 89 0.00000 13 400 - 0.00000 - 160 40s 922 91 infeasible 23 - 0.00000 - 244 45s 1125 38 infeasible 25 - 0.00000 - 252 50s 1330 31 0.00000 23 328 - 0.00000 - 258 55s 1531 18 infeasible 20 - 0.00000 - 263 60s Cutting planes: Gomory: 1 Clique: 1 Zero half: 26 Explored 1624 nodes (469225 simplex iterations) in 62.72 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