current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:53 2012 Optimize a model with 24795 rows, 5355 columns and 78939 nonzeros Presolve time: 0.13s Presolved: 24795 rows, 5355 columns, 78939 nonzeros Variable types: 0 continuous, 5355 integer (5355 binary) Root relaxation: objective 0.000000e+00, 283 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 (511 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 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:54 2012 Optimize a model with 12195 rows, 2880 columns and 38664 nonzeros Presolve time: 0.05s Presolved: 12195 rows, 2880 columns, 38664 nonzeros Variable types: 0 continuous, 2880 integer (2880 binary) Root relaxation: objective 0.000000e+00, 210 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 (407 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 19:50:54 2012 Optimize a model with 6147 rows, 1692 columns and 19332 nonzeros Presolve time: 0.02s Presolved: 6147 rows, 1692 columns, 19332 nonzeros Variable types: 0 continuous, 1692 integer (1692 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 (404 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 19:50:54 2012 Optimize a model with 3123 rows, 1098 columns and 9666 nonzeros Presolve time: 0.01s Presolved: 3123 rows, 1098 columns, 9666 nonzeros Variable types: 0 continuous, 1098 integer (1098 binary) Root relaxation: objective 0.000000e+00, 221 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 (733 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 19:50:54 2012 Optimize a model with 1611 rows, 801 columns and 4833 nonzeros Presolve time: 0.00s Presolved: 1611 rows, 801 columns, 4833 nonzeros Variable types: 0 continuous, 801 integer (801 binary) Root relaxation: objective 0.000000e+00, 217 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 0 194 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2333 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:54 2012 Optimize a model with 2115 rows, 900 columns and 6444 nonzeros Presolve time: 0.01s Presolved: 2115 rows, 900 columns, 6444 nonzeros Variable types: 0 continuous, 900 integer (900 binary) Root relaxation: objective 0.000000e+00, 214 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 0 189 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 242 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 1s 0 0 0.00000 0 242 - 0.00000 - - 1s 0 0 0.00000 0 237 - 0.00000 - - 1s 0 0 0.00000 0 235 - 0.00000 - - 1s 0 0 0.00000 0 255 - 0.00000 - - 1s 0 0 0.00000 0 261 - 0.00000 - - 2s 0 0 0.00000 0 261 - 0.00000 - - 2s 0 2 0.00000 0 261 - 0.00000 - - 2s Cutting planes: Clique: 5 Zero half: 31 Explored 137 nodes (36678 simplex iterations) in 3.48 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 19:50:58 2012 Optimize a model with 2619 rows, 999 columns and 8055 nonzeros Presolve time: 0.01s Presolved: 2619 rows, 999 columns, 8055 nonzeros Variable types: 0 continuous, 999 integer (999 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 0.00000 0 178 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 123 Zero half: 179 Explored 0 nodes (2549 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% optimal solution found: number of colors: 5