current bounds on the number of colors: 0 -- 103 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:48 2012 Optimize a model with 28051 rows, 5801 columns and 89097 nonzeros Presolve time: 0.14s Presolved: 28051 rows, 5801 columns, 89097 nonzeros Variable types: 0 continuous, 5801 integer (5801 binary) Root relaxation: objective 0.000000e+00, 295 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 (524 simplex iterations) in 0.19 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% current bounds on the number of colors: 0 -- 51 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:49 2012 Optimize a model with 13803 rows, 3123 columns and 43675 nonzeros Presolve time: 0.05s Presolved: 13803 rows, 3123 columns, 43675 nonzeros Variable types: 0 continuous, 3123 integer (3123 binary) Root relaxation: objective 0.000000e+00, 218 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 (424 simplex iterations) in 0.08 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 -- 25 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:49 2012 Optimize a model with 6679 rows, 1784 columns and 20964 nonzeros Presolve time: 0.02s Presolved: 6679 rows, 1784 columns, 20964 nonzeros Variable types: 0 continuous, 1784 integer (1784 binary) Root relaxation: objective 0.000000e+00, 208 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 (410 simplex iterations) in 0.03 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:49 2012 Optimize a model with 3391 rows, 1166 columns and 10482 nonzeros Presolve time: 0.01s Presolved: 3391 rows, 1166 columns, 10482 nonzeros Variable types: 0 continuous, 1166 integer (1166 binary) Root relaxation: objective 0.000000e+00, 218 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 51 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2336 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:49 2012 Optimize a model with 1747 rows, 857 columns and 5241 nonzeros Presolve time: 0.00s Presolved: 1747 rows, 857 columns, 5241 nonzeros Variable types: 0 continuous, 857 integer (857 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2620 simplex iterations) in 0.23 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 19:54:50 2012 Optimize a model with 2295 rows, 960 columns and 6988 nonzeros Presolve time: 0.01s Presolved: 2295 rows, 960 columns, 6988 nonzeros Variable types: 0 continuous, 960 integer (960 binary) Root relaxation: objective 0.000000e+00, 226 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 0 187 - 0.00000 - - 0s 0 0 0.00000 0 281 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 0s 0 0 0.00000 0 276 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 276 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 280 - 0.00000 - - 2s 0 0 0.00000 0 280 - 0.00000 - - 2s 0 2 0.00000 0 280 - 0.00000 - - 2s Cutting planes: Clique: 7 Zero half: 13 Explored 33 nodes (23550 simplex iterations) in 3.06 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 19:54:53 2012 Optimize a model with 2843 rows, 1063 columns and 8735 nonzeros Presolve time: 0.01s Presolved: 2843 rows, 1063 columns, 8735 nonzeros Variable types: 0 continuous, 1063 integer (1063 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 0 198 - 0.00000 - - 0s 0 0 0.00000 0 157 - 0.00000 - - 0s 0 0 0.00000 0 103 - 0.00000 - - 0s 0 0 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 108 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 1 Zero half: 3 Explored 0 nodes (9303 simplex iterations) in 0.77 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