current bounds on the number of colors: 0 -- 98 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:41 2012 Optimize a model with 25774 rows, 5326 columns and 81830 nonzeros Presolve time: 0.13s Presolved: 25774 rows, 5326 columns, 81830 nonzeros Variable types: 0 continuous, 5326 integer (5326 binary) Root relaxation: objective 0.000000e+00, 285 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 (623 simplex iterations) in 0.20 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 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:41 2012 Optimize a model with 12674 rows, 2876 columns and 40080 nonzeros Presolve time: 0.05s Presolved: 12674 rows, 2876 columns, 40080 nonzeros Variable types: 0 continuous, 2876 integer (2876 binary) Root relaxation: objective 0.000000e+00, 223 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 (412 simplex iterations) in 0.07 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 -- 24 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:42 2012 Optimize a model with 6386 rows, 1700 columns and 20040 nonzeros Presolve time: 0.02s Presolved: 6386 rows, 1700 columns, 20040 nonzeros Variable types: 0 continuous, 1700 integer (1700 binary) Root relaxation: objective 0.000000e+00, 210 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 (387 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 19:50:42 2012 Optimize a model with 3242 rows, 1112 columns and 10020 nonzeros Presolve time: 0.01s Presolved: 3242 rows, 1112 columns, 10020 nonzeros Variable types: 0 continuous, 1112 integer (1112 binary) Root relaxation: objective 0.000000e+00, 219 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 (839 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:42 2012 Optimize a model with 1670 rows, 818 columns and 5010 nonzeros Presolve time: 0.00s Presolved: 1670 rows, 818 columns, 5010 nonzeros Variable types: 0 continuous, 818 integer (818 binary) Root relaxation: objective 0.000000e+00, 234 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 0 156 - 0.00000 - - 0s 0 0 0.00000 0 217 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3350 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 19:50:42 2012 Optimize a model with 2194 rows, 916 columns and 6680 nonzeros Presolve time: 0.01s Presolved: 2194 rows, 916 columns, 6680 nonzeros Variable types: 0 continuous, 916 integer (916 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 251 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 0 0.00000 0 291 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 1s 0 0 0.00000 0 261 - 0.00000 - - 1s 0 0 0.00000 0 240 - 0.00000 - - 1s 0 0 0.00000 0 220 - 0.00000 - - 2s 0 0 0.00000 0 238 - 0.00000 - - 2s 0 0 0.00000 0 248 - 0.00000 - - 2s 0 0 0.00000 0 238 - 0.00000 - - 2s 0 2 0.00000 0 238 - 0.00000 - - 2s Cutting planes: Gomory: 2 Clique: 13 Zero half: 22 Explored 126 nodes (40049 simplex iterations) in 4.13 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 19:50:46 2012 Optimize a model with 2718 rows, 1014 columns and 8350 nonzeros Presolve time: 0.01s Presolved: 2718 rows, 1014 columns, 8350 nonzeros Variable types: 0 continuous, 1014 integer (1014 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 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 164 - 0.00000 - - 0s 0 0 0.00000 0 243 - 0.00000 - - 0s 0 0 0.00000 0 217 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (10801 simplex iterations) in 1.02 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