current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:57 2012 Optimize a model with 40710 rows, 7650 columns and 128738 nonzeros Presolve time: 0.15s Presolved: 40710 rows, 7650 columns, 128738 nonzeros Variable types: 0 continuous, 7650 integer (7650 binary) Root relaxation: objective 0.000000e+00, 316 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 (573 simplex iterations) in 0.26 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: 0 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:57 2012 Optimize a model with 20070 rows, 4110 columns and 63278 nonzeros Presolve time: 0.09s Presolved: 20070 rows, 4110 columns, 63278 nonzeros Variable types: 0 continuous, 4110 integer (4110 binary) Root relaxation: objective 0.000000e+00, 292 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 (543 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:58 2012 Optimize a model with 9750 rows, 2340 columns and 30548 nonzeros Presolve time: 0.03s Presolved: 9750 rows, 2340 columns, 30548 nonzeros Variable types: 0 continuous, 2340 integer (2340 binary) Root relaxation: objective 0.000000e+00, 241 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 (604 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:58 2012 Optimize a model with 4934 rows, 1514 columns and 15274 nonzeros Presolve time: 0.01s Presolved: 4934 rows, 1514 columns, 15274 nonzeros Variable types: 0 continuous, 1514 integer (1514 binary) Root relaxation: objective 0.000000e+00, 246 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 (1252 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:58 2012 Optimize a model with 2182 rows, 1042 columns and 6546 nonzeros Presolve time: 0.01s Presolved: 2182 rows, 1042 columns, 6546 nonzeros Variable types: 0 continuous, 1042 integer (1042 binary) Root relaxation: objective 0.000000e+00, 262 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3539 simplex iterations) in 0.32 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 20:43:59 2012 Optimize a model with 3558 rows, 1278 columns and 10910 nonzeros Presolve time: 0.01s Presolved: 3558 rows, 1278 columns, 10910 nonzeros Variable types: 0 continuous, 1278 integer (1278 binary) Root relaxation: objective 0.000000e+00, 250 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 0 114 - 0.00000 - - 0s 0 0 0.00000 0 118 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s 0 0 0.00000 0 227 - 0.00000 - - 1s 0 0 0.00000 0 238 - 0.00000 - - 1s 0 0 0.00000 0 243 - 0.00000 - - 1s 0 0 0.00000 0 243 - 0.00000 - - 1s 0 2 0.00000 0 243 - 0.00000 - - 2s 605 98 0.00000 16 236 - 0.00000 - 59.6 5s 613 103 0.00000 23 184 - 0.00000 - 58.8 10s * 795 40 33 0.0000000 0.00000 0.0% 99.0 12s Cutting planes: Gomory: 1 Zero half: 8 Explored 796 nodes (95875 simplex iterations) in 12.79 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 20:44:11 2012 Optimize a model with 2870 rows, 1160 columns and 8728 nonzeros Presolve time: 0.01s Presolved: 2870 rows, 1160 columns, 8728 nonzeros Variable types: 0 continuous, 1160 integer (1160 binary) Root relaxation: objective 0.000000e+00, 254 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 0 232 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 339 - 0.00000 - - 0s 0 0 0.00000 0 347 - 0.00000 - - 1s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 0 0.00000 0 337 - 0.00000 - - 2s 0 0 0.00000 0 337 - 0.00000 - - 2s 0 0 0.00000 0 333 - 0.00000 - - 2s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 336 - 0.00000 - - 4s 0 0 0.00000 0 329 - 0.00000 - - 4s 0 0 0.00000 0 324 - 0.00000 - - 5s 0 0 0.00000 0 323 - 0.00000 - - 5s 0 0 0.00000 0 328 - 0.00000 - - 6s 0 0 0.00000 0 328 - 0.00000 - - 6s 0 2 0.00000 0 328 - 0.00000 - - 6s Cutting planes: Clique: 17 Zero half: 32 Explored 43 nodes (45725 simplex iterations) in 8.02 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