current bounds on the number of colors: 0 -- 121 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:50 2012 Optimize a model with 44161 rows, 7994 columns and 139380 nonzeros Presolve time: 0.16s Presolved: 44161 rows, 7994 columns, 139380 nonzeros Variable types: 0 continuous, 7994 integer (7994 binary) Root relaxation: objective 0.000000e+00, 324 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 (605 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 -- 60 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:51 2012 Optimize a model with 22141 rows, 4364 columns and 69690 nonzeros Presolve time: 0.10s Presolved: 22141 rows, 4364 columns, 69690 nonzeros Variable types: 0 continuous, 4364 integer (4364 binary) Root relaxation: objective 0.000000e+00, 298 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 (553 simplex iterations) in 0.15 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 -- 30 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:51 2012 Optimize a model with 11131 rows, 2549 columns and 34845 nonzeros Presolve time: 0.04s Presolved: 11131 rows, 2549 columns, 34845 nonzeros Variable types: 0 continuous, 2549 integer (2549 binary) Root relaxation: objective 0.000000e+00, 243 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 (492 simplex iterations) in 0.06 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:51 2012 Optimize a model with 5259 rows, 1581 columns and 16261 nonzeros Presolve time: 0.01s Presolved: 5259 rows, 1581 columns, 16261 nonzeros Variable types: 0 continuous, 1581 integer (1581 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (909 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:52 2012 Optimize a model with 2323 rows, 1097 columns and 6969 nonzeros Presolve time: 0.01s Presolved: 2323 rows, 1097 columns, 6969 nonzeros Variable types: 0 continuous, 1097 integer (1097 binary) Root relaxation: objective 0.000000e+00, 296 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4034 simplex iterations) in 0.43 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:52 2012 Optimize a model with 3791 rows, 1339 columns and 11615 nonzeros Presolve time: 0.01s Presolved: 3791 rows, 1339 columns, 11615 nonzeros Variable types: 0 continuous, 1339 integer (1339 binary) Root relaxation: objective 0.000000e+00, 270 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 0 132 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 1s 0 0 0.00000 0 259 - 0.00000 - - 1s 0 0 0.00000 0 123 - 0.00000 - - 1s 0 0 0.00000 0 151 - 0.00000 - - 1s 0 0 0.00000 0 154 - 0.00000 - - 2s H 0 0 0.0000000 0.00000 0.0% - 2s Cutting planes: Clique: 1 Zero half: 2 Explored 0 nodes (19787 simplex iterations) in 2.26 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:22:54 2012 Optimize a model with 3057 rows, 1218 columns and 9292 nonzeros Presolve time: 0.01s Presolved: 3057 rows, 1218 columns, 9292 nonzeros Variable types: 0 continuous, 1218 integer (1218 binary) Root relaxation: objective 0.000000e+00, 253 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 353 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 1s 0 0 0.00000 0 345 - 0.00000 - - 1s 0 0 0.00000 0 343 - 0.00000 - - 1s 0 0 0.00000 0 340 - 0.00000 - - 1s 0 0 0.00000 0 338 - 0.00000 - - 1s 0 0 0.00000 0 336 - 0.00000 - - 1s 0 0 0.00000 0 335 - 0.00000 - - 2s 0 0 0.00000 0 331 - 0.00000 - - 2s 0 0 0.00000 0 330 - 0.00000 - - 2s 0 0 0.00000 0 345 - 0.00000 - - 2s 0 0 0.00000 0 347 - 0.00000 - - 3s 0 0 0.00000 0 343 - 0.00000 - - 3s 0 0 0.00000 0 347 - 0.00000 - - 4s 0 0 0.00000 0 339 - 0.00000 - - 4s 0 0 0.00000 0 335 - 0.00000 - - 5s 0 0 0.00000 0 339 - 0.00000 - - 5s 0 0 0.00000 0 322 - 0.00000 - - 6s 0 2 0.00000 0 322 - 0.00000 - - 6s Cutting planes: Clique: 6 Zero half: 9 Explored 25 nodes (37481 simplex iterations) in 7.24 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