current bounds on the number of colors: 0 -- 94 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:25 2012 Optimize a model with 21056 rows, 4864 columns and 67304 nonzeros Presolve time: 0.12s Presolved: 21056 rows, 4864 columns, 67304 nonzeros Variable types: 0 continuous, 4864 integer (4864 binary) Root relaxation: objective 0.000000e+00, 273 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 (465 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 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:26 2012 Optimize a model with 10352 rows, 2608 columns and 32936 nonzeros Presolve time: 0.04s Presolved: 10352 rows, 2608 columns, 32936 nonzeros Variable types: 0 continuous, 2608 integer (2608 binary) Root relaxation: objective 0.000000e+00, 216 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 (410 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 19:47:26 2012 Optimize a model with 5000 rows, 1480 columns and 15752 nonzeros Presolve time: 0.01s Presolved: 5000 rows, 1480 columns, 15752 nonzeros Variable types: 0 continuous, 1480 integer (1480 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 (382 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 19:47:26 2012 Optimize a model with 2324 rows, 916 columns and 7160 nonzeros Presolve time: 0.01s Presolved: 2324 rows, 916 columns, 7160 nonzeros Variable types: 0 continuous, 916 integer (916 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 (1319 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:26 2012 Optimize a model with 986 rows, 634 columns and 2864 nonzeros Presolve removed 94 rows and 94 columns Presolve time: 0.00s Presolved: 892 rows, 540 columns, 2676 nonzeros Variable types: 0 continuous, 540 integer (540 binary) Root relaxation: objective 0.000000e+00, 97 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 (413 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 19:47:26 2012 Optimize a model with 1432 rows, 728 columns and 4296 nonzeros Presolve time: 0.00s Presolved: 1432 rows, 728 columns, 4296 nonzeros Variable types: 0 continuous, 728 integer (728 binary) Root relaxation: objective 0.000000e+00, 199 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 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2348 simplex iterations) in 0.19 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 19:47:26 2012 Optimize a model with 1878 rows, 822 columns and 5728 nonzeros Presolve time: 0.00s Presolved: 1878 rows, 822 columns, 5728 nonzeros Variable types: 0 continuous, 822 integer (822 binary) Root relaxation: objective 0.000000e+00, 197 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 0 177 - 0.00000 - - 0s 0 0 0.00000 0 191 - 0.00000 - - 0s 0 0 0.00000 0 239 - 0.00000 - - 0s 0 0 0.00000 0 243 - 0.00000 - - 0s 0 0 0.00000 0 187 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 1s 0 0 0.00000 0 249 - 0.00000 - - 1s 0 2 0.00000 0 249 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 10 Explored 817 nodes (80785 simplex iterations) in 4.58 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