current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:44:43 2012 Optimize a model with 40769 rows, 7651 columns and 128915 nonzeros Presolve time: 0.16s Presolved: 40769 rows, 7651 columns, 128915 nonzeros Variable types: 0 continuous, 7651 integer (7651 binary) Root relaxation: objective 0.000000e+00, 301 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 (559 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:44:43 2012 Optimize a model with 20099 rows, 4111 columns and 63365 nonzeros Presolve time: 0.09s Presolved: 20099 rows, 4111 columns, 63365 nonzeros Variable types: 0 continuous, 4111 integer (4111 binary) Root relaxation: objective 0.000000e+00, 283 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 (530 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:44:44 2012 Optimize a model with 9764 rows, 2341 columns and 30590 nonzeros Presolve time: 0.03s Presolved: 9764 rows, 2341 columns, 30590 nonzeros Variable types: 0 continuous, 2341 integer (2341 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 (473 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 20:44:44 2012 Optimize a model with 4941 rows, 1515 columns and 15295 nonzeros Presolve time: 0.01s Presolved: 4941 rows, 1515 columns, 15295 nonzeros Variable types: 0 continuous, 1515 integer (1515 binary) Root relaxation: objective 0.000000e+00, 243 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 (794 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 20:44:44 2012 Optimize a model with 2185 rows, 1043 columns and 6555 nonzeros Presolve time: 0.01s Presolved: 2185 rows, 1043 columns, 6555 nonzeros Variable types: 0 continuous, 1043 integer (1043 binary) Root relaxation: objective 0.000000e+00, 264 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 0 186 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4264 simplex iterations) in 0.41 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 20:44:44 2012 Optimize a model with 3563 rows, 1279 columns and 10925 nonzeros Presolve time: 0.01s Presolved: 3563 rows, 1279 columns, 10925 nonzeros Variable types: 0 continuous, 1279 integer (1279 binary) Root relaxation: objective 0.000000e+00, 249 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 0 204 - 0.00000 - - 0s 0 0 0.00000 0 221 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 1s 0 0 0.00000 0 277 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 1s 0 0 0.00000 0 315 - 0.00000 - - 2s 0 0 0.00000 0 305 - 0.00000 - - 2s 0 2 0.00000 0 304 - 0.00000 - - 2s 752 90 0.00000 22 178 - 0.00000 - 58.8 5s 912 128 infeasible 28 - 0.00000 - 84.4 10s * 940 64 28 0.0000000 0.00000 0.0% 86.7 10s Cutting planes: Clique: 1 Zero half: 1 Explored 941 nodes (103132 simplex iterations) in 10.25 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:44:55 2012 Optimize a model with 2874 rows, 1161 columns and 8740 nonzeros Presolve time: 0.01s Presolved: 2874 rows, 1161 columns, 8740 nonzeros Variable types: 0 continuous, 1161 integer (1161 binary) Root relaxation: objective 0.000000e+00, 257 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 0 228 - 0.00000 - - 0s 0 0 0.00000 0 299 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 260 - 0.00000 - - 1s 0 0 0.00000 0 355 - 0.00000 - - 1s 0 0 0.00000 0 341 - 0.00000 - - 2s 0 0 0.00000 0 329 - 0.00000 - - 2s 0 0 0.00000 0 328 - 0.00000 - - 3s 0 0 0.00000 0 320 - 0.00000 - - 3s 0 0 0.00000 0 318 - 0.00000 - - 4s 0 0 0.00000 0 312 - 0.00000 - - 4s 0 0 0.00000 0 314 - 0.00000 - - 5s 0 0 0.00000 0 313 - 0.00000 - - 5s 0 0 0.00000 0 315 - 0.00000 - - 6s 0 0 0.00000 0 315 - 0.00000 - - 6s 0 2 0.00000 0 315 - 0.00000 - - 7s Cutting planes: Clique: 11 Zero half: 33 Explored 25 nodes (44210 simplex iterations) in 7.33 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