current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:41 2012 Optimize a model with 26418 rows, 5718 columns and 84150 nonzeros Presolve time: 0.13s Presolved: 26418 rows, 5718 columns, 84150 nonzeros Variable types: 0 continuous, 5718 integer (5718 binary) Root relaxation: objective 0.000000e+00, 309 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 (677 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 -- 51 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:42 2012 Optimize a model with 13002 rows, 3066 columns and 41250 nonzeros Presolve time: 0.05s Presolved: 13002 rows, 3066 columns, 41250 nonzeros Variable types: 0 continuous, 3066 integer (3066 binary) Root relaxation: objective 0.000000e+00, 232 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 (559 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 -- 25 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:42 2012 Optimize a model with 6294 rows, 1740 columns and 19800 nonzeros Presolve time: 0.02s Presolved: 6294 rows, 1740 columns, 19800 nonzeros Variable types: 0 continuous, 1740 integer (1740 binary) Root relaxation: objective 0.000000e+00, 207 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 (377 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 19:53:42 2012 Optimize a model with 3198 rows, 1128 columns and 9900 nonzeros Presolve time: 0.01s Presolved: 3198 rows, 1128 columns, 9900 nonzeros Variable types: 0 continuous, 1128 integer (1128 binary) Root relaxation: objective 0.000000e+00, 224 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 (1793 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:42 2012 Optimize a model with 1650 rows, 822 columns and 4950 nonzeros Presolve time: 0.00s Presolved: 1650 rows, 822 columns, 4950 nonzeros Variable types: 0 continuous, 822 integer (822 binary) Root relaxation: objective 0.000000e+00, 242 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 0 186 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3044 simplex iterations) in 0.27 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 19:53:42 2012 Optimize a model with 2166 rows, 924 columns and 6600 nonzeros Presolve time: 0.01s Presolved: 2166 rows, 924 columns, 6600 nonzeros Variable types: 0 continuous, 924 integer (924 binary) Root relaxation: objective 0.000000e+00, 230 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 2 0.00000 0 278 - 0.00000 - - 1s Cutting planes: Gomory: 1 Clique: 6 Zero half: 38 Explored 279 nodes (47863 simplex iterations) in 3.74 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 19:53:46 2012 Optimize a model with 2682 rows, 1026 columns and 8250 nonzeros Presolve time: 0.01s Presolved: 2682 rows, 1026 columns, 8250 nonzeros Variable types: 0 continuous, 1026 integer (1026 binary) Root relaxation: objective 0.000000e+00, 223 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 0 155 - 0.00000 - - 0s 0 0 0.00000 0 144 - 0.00000 - - 0s Cutting planes: Clique: 13 Explored 0 nodes (4413 simplex iterations) in 0.31 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