current bounds on the number of colors: 0 -- 104 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:56:04 2012 Optimize a model with 30732 rows, 5997 columns and 97292 nonzeros Presolve time: 0.15s Presolved: 30732 rows, 5997 columns, 97292 nonzeros Variable types: 0 continuous, 5997 integer (5997 binary) Root relaxation: objective 0.000000e+00, 269 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 (560 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 -- 52 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:56:04 2012 Optimize a model with 15418 rows, 3293 columns and 48646 nonzeros Presolve time: 0.06s Presolved: 15418 rows, 3293 columns, 48646 nonzeros Variable types: 0 continuous, 3293 integer (3293 binary) Root relaxation: objective 0.000000e+00, 267 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 (485 simplex iterations) in 0.09 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 -- 26 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:56:05 2012 Optimize a model with 7761 rows, 1941 columns and 24323 nonzeros Presolve time: 0.02s Presolved: 7761 rows, 1941 columns, 24323 nonzeros Variable types: 0 continuous, 1941 integer (1941 binary) Root relaxation: objective 0.000000e+00, 212 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 (435 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 19:56:05 2012 Optimize a model with 3638 rows, 1213 columns and 11226 nonzeros Presolve time: 0.01s Presolved: 3638 rows, 1213 columns, 11226 nonzeros Variable types: 0 continuous, 1213 integer (1213 binary) Root relaxation: objective 0.000000e+00, 227 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 79 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2501 simplex iterations) in 0.16 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 19:56:05 2012 Optimize a model with 1871 rows, 901 columns and 5613 nonzeros Presolve time: 0.00s Presolved: 1871 rows, 901 columns, 5613 nonzeros Variable types: 0 continuous, 901 integer (901 binary) Root relaxation: objective 0.000000e+00, 228 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 0 176 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2803 simplex iterations) in 0.24 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 19:56:05 2012 Optimize a model with 2460 rows, 1005 columns and 7484 nonzeros Presolve time: 0.01s Presolved: 2460 rows, 1005 columns, 7484 nonzeros Variable types: 0 continuous, 1005 integer (1005 binary) Root relaxation: objective 0.000000e+00, 233 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 0 202 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 1s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 309 - 0.00000 - - 2s 0 0 0.00000 0 307 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 3s 0 0 0.00000 0 308 - 0.00000 - - 3s 0 0 0.00000 0 308 - 0.00000 - - 3s 0 2 0.00000 0 308 - 0.00000 - - 4s Cutting planes: Gomory: 1 Clique: 7 Zero half: 19 Explored 7 nodes (25110 simplex iterations) in 4.19 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 19:56:10 2012 Optimize a model with 3049 rows, 1109 columns and 9355 nonzeros Presolve time: 0.01s Presolved: 3049 rows, 1109 columns, 9355 nonzeros Variable types: 0 continuous, 1109 integer (1109 binary) Root relaxation: objective 0.000000e+00, 225 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 0 204 - 0.00000 - - 0s 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 0.00000 0 92 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 132 - 0.00000 - - 0s 0 0 0.00000 0 70 - 0.00000 - - 1s 0 0 0.00000 0 185 - 0.00000 - - 1s 0 0 0.00000 0 224 - 0.00000 - - 1s 0 0 0.00000 0 202 - 0.00000 - - 1s 0 0 0.00000 0 268 - 0.00000 - - 1s 0 0 0.00000 0 245 - 0.00000 - - 2s 0 2 0.00000 0 245 - 0.00000 - - 2s 707 63 0.00000 6 158 - 0.00000 - 55.2 5s * 776 43 29 0.0000000 0.00000 0.0% 87.9 9s Cutting planes: Gomory: 1 Clique: 3 Zero half: 2 Explored 777 nodes (91423 simplex iterations) in 9.19 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