current bounds on the number of colors: 0 -- 94 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:15 2012 Optimize a model with 21244 rows, 4868 columns and 67868 nonzeros Presolve time: 0.12s Presolved: 21244 rows, 4868 columns, 67868 nonzeros Variable types: 0 continuous, 4868 integer (4868 binary) Root relaxation: objective 0.000000e+00, 295 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 (533 simplex iterations) in 0.17 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 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:15 2012 Optimize a model with 10444 rows, 2612 columns and 33212 nonzeros Presolve time: 0.04s Presolved: 10444 rows, 2612 columns, 33212 nonzeros Variable types: 0 continuous, 2612 integer (2612 binary) Root relaxation: objective 0.000000e+00, 203 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 (400 simplex iterations) in 0.06 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:15 2012 Optimize a model with 5044 rows, 1484 columns and 15884 nonzeros Presolve time: 0.02s Presolved: 5044 rows, 1484 columns, 15884 nonzeros Variable types: 0 continuous, 1484 integer (1484 binary) Root relaxation: objective 0.000000e+00, 201 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 (369 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:16 2012 Optimize a model with 2344 rows, 920 columns and 7220 nonzeros Presolve time: 0.01s Presolved: 2344 rows, 920 columns, 7220 nonzeros Variable types: 0 continuous, 920 integer (920 binary) Root relaxation: objective 0.000000e+00, 205 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 91 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1579 simplex iterations) in 0.06 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:16 2012 Optimize a model with 994 rows, 638 columns and 2888 nonzeros Presolve removed 94 rows and 94 columns Presolve time: 0.00s Presolved: 900 rows, 544 columns, 2700 nonzeros Variable types: 0 continuous, 544 integer (544 binary) Root relaxation: objective 0.000000e+00, 99 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 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (424 simplex iterations) in 0.01 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:16 2012 Optimize a model with 1444 rows, 732 columns and 4332 nonzeros Presolve time: 0.00s Presolved: 1444 rows, 732 columns, 4332 nonzeros Variable types: 0 continuous, 732 integer (732 binary) Root relaxation: objective 0.000000e+00, 203 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 0 180 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 273 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 17 Zero half: 507 Explored 0 nodes (3623 simplex iterations) in 0.36 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:16 2012 Optimize a model with 1894 rows, 826 columns and 5776 nonzeros Presolve time: 0.00s Presolved: 1894 rows, 826 columns, 5776 nonzeros Variable types: 0 continuous, 826 integer (826 binary) Root relaxation: objective 0.000000e+00, 213 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 0 191 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 265 - 0.00000 - - 0s 0 0 0.00000 0 243 - 0.00000 - - 0s 0 0 0.00000 0 209 - 0.00000 - - 0s 0 0 0.00000 0 197 - 0.00000 - - 1s 0 0 0.00000 0 250 - 0.00000 - - 1s 0 0 0.00000 0 244 - 0.00000 - - 1s 0 0 0.00000 0 248 - 0.00000 - - 1s 0 0 0.00000 0 248 - 0.00000 - - 1s 0 2 0.00000 0 248 - 0.00000 - - 1s Cutting planes: Clique: 4 Zero half: 27 Explored 67 nodes (26123 simplex iterations) in 2.29 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