current bounds on the number of colors: 0 -- 110 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:22 2012 Optimize a model with 32395 rows, 6637 columns and 102905 nonzeros Presolve time: 0.15s Presolved: 32395 rows, 6637 columns, 102905 nonzeros Variable types: 0 continuous, 6637 integer (6637 binary) Root relaxation: objective 0.000000e+00, 399 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 (688 simplex iterations) in 0.23 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:23 2012 Optimize a model with 15959 rows, 3557 columns and 50517 nonzeros Presolve time: 0.07s Presolved: 15959 rows, 3557 columns, 50517 nonzeros Variable types: 0 continuous, 3557 integer (3557 binary) Root relaxation: objective 0.000000e+00, 266 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 (480 simplex iterations) in 0.10 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:23 2012 Optimize a model with 7741 rows, 2017 columns and 24323 nonzeros Presolve time: 0.02s Presolved: 7741 rows, 2017 columns, 24323 nonzeros Variable types: 0 continuous, 2017 integer (2017 binary) Root relaxation: objective 0.000000e+00, 226 iterations, 0.00 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 (439 simplex iterations) in 0.04 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:24 2012 Optimize a model with 3632 rows, 1247 columns and 11226 nonzeros Presolve time: 0.01s Presolved: 3632 rows, 1247 columns, 11226 nonzeros Variable types: 0 continuous, 1247 integer (1247 binary) Root relaxation: objective 0.000000e+00, 235 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 94 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1311 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:24 2012 Optimize a model with 1871 rows, 917 columns and 5613 nonzeros Presolve time: 0.00s Presolved: 1871 rows, 917 columns, 5613 nonzeros Variable types: 0 continuous, 917 integer (917 binary) Root relaxation: objective 0.000000e+00, 248 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3423 simplex iterations) in 0.33 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 Thu Dec 13 20:04:24 2012 Optimize a model with 2458 rows, 1027 columns and 7484 nonzeros Presolve time: 0.01s Presolved: 2458 rows, 1027 columns, 7484 nonzeros Variable types: 0 continuous, 1027 integer (1027 binary) Root relaxation: objective 0.000000e+00, 251 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 268 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 315 - 0.00000 - - 0s 0 0 0.00000 0 309 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 309 - 0.00000 - - 1s 0 0 0.00000 0 307 - 0.00000 - - 1s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 2s 0 0 0.00000 0 298 - 0.00000 - - 2s 0 0 0.00000 0 303 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 3s 0 0 0.00000 0 306 - 0.00000 - - 3s 0 0 0.00000 0 293 - 0.00000 - - 3s 0 0 0.00000 0 286 - 0.00000 - - 4s 0 0 0.00000 0 286 - 0.00000 - - 4s 0 0 0.00000 0 281 - 0.00000 - - 4s 0 2 0.00000 0 281 - 0.00000 - - 5s Cutting planes: Clique: 4 Zero half: 24 Explored 19 nodes (35077 simplex iterations) in 5.35 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 Thu Dec 13 20:04:29 2012 Optimize a model with 3045 rows, 1137 columns and 9355 nonzeros Presolve time: 0.01s Presolved: 3045 rows, 1137 columns, 9355 nonzeros Variable types: 0 continuous, 1137 integer (1137 binary) Root relaxation: objective 0.000000e+00, 245 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 92 - 0.00000 - - 0s 0 0 0.00000 0 114 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 0.00000 0 287 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 89 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 1 Explored 0 nodes (11009 simplex iterations) in 0.96 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