current bounds on the number of colors: 0 -- 115 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:38 2012 Optimize a model with 36082 rows, 7186 columns and 114456 nonzeros Presolve time: 0.14s Presolved: 36082 rows, 7186 columns, 114456 nonzeros Variable types: 0 continuous, 7186 integer (7186 binary) Root relaxation: objective 0.000000e+00, 295 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 (555 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:39 2012 Optimize a model with 17783 rows, 3851 columns and 56224 nonzeros Presolve time: 0.08s Presolved: 17783 rows, 3851 columns, 56224 nonzeros Variable types: 0 continuous, 3851 integer (3851 binary) Root relaxation: objective 0.000000e+00, 298 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 (552 simplex iterations) in 0.11 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:39 2012 Optimize a model with 8949 rows, 2241 columns and 28112 nonzeros Presolve time: 0.03s Presolved: 8949 rows, 2241 columns, 28112 nonzeros Variable types: 0 continuous, 2241 integer (2241 binary) Root relaxation: objective 0.000000e+00, 259 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 (497 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:39 2012 Optimize a model with 4532 rows, 1436 columns and 14056 nonzeros Presolve time: 0.01s Presolved: 4532 rows, 1436 columns, 14056 nonzeros Variable types: 0 continuous, 1436 integer (1436 binary) Root relaxation: objective 0.000000e+00, 247 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 (929 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:39 2012 Optimize a model with 2008 rows, 976 columns and 6024 nonzeros Presolve time: 0.00s Presolved: 2008 rows, 976 columns, 6024 nonzeros Variable types: 0 continuous, 976 integer (976 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 0 230 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3073 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 20:21:40 2012 Optimize a model with 3270 rows, 1206 columns and 10040 nonzeros Presolve time: 0.01s Presolved: 3270 rows, 1206 columns, 10040 nonzeros Variable types: 0 continuous, 1206 integer (1206 binary) Root relaxation: objective 0.000000e+00, 231 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 0 147 - 0.00000 - - 0s Cutting planes: Clique: 13 Explored 0 nodes (4182 simplex iterations) in 0.34 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 20:21:40 2012 Optimize a model with 2639 rows, 1091 columns and 8032 nonzeros Presolve time: 0.01s Presolved: 2639 rows, 1091 columns, 8032 nonzeros Variable types: 0 continuous, 1091 integer (1091 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 0 138 - 0.00000 - - 0s 0 0 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 1s 0 0 0.00000 0 319 - 0.00000 - - 1s 0 0 0.00000 0 305 - 0.00000 - - 2s 0 0 0.00000 0 310 - 0.00000 - - 3s 0 0 0.00000 0 311 - 0.00000 - - 3s 0 0 0.00000 0 311 - 0.00000 - - 3s 0 2 0.00000 0 311 - 0.00000 - - 4s Cutting planes: Clique: 12 Zero half: 16 Explored 51 nodes (37439 simplex iterations) in 4.97 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