current bounds on the number of colors: 0 -- 111 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:32 2012 Optimize a model with 33881 rows, 6719 columns and 107415 nonzeros Presolve time: 0.15s Presolved: 33881 rows, 6719 columns, 107415 nonzeros Variable types: 0 continuous, 6719 integer (6719 binary) Root relaxation: objective 0.000000e+00, 267 iterations, 0.04 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 (512 simplex iterations) in 0.23 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:33 2012 Optimize a model with 16689 rows, 3611 columns and 52731 nonzeros Presolve time: 0.07s Presolved: 16689 rows, 3611 columns, 52731 nonzeros Variable types: 0 continuous, 3611 integer (3611 binary) Root relaxation: objective 0.000000e+00, 268 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 (484 simplex iterations) in 0.10 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:33 2012 Optimize a model with 8093 rows, 2057 columns and 25389 nonzeros Presolve time: 0.03s Presolved: 8093 rows, 2057 columns, 25389 nonzeros Variable types: 0 continuous, 2057 integer (2057 binary) Root relaxation: objective 0.000000e+00, 228 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 (613 simplex iterations) in 0.05 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:33 2012 Optimize a model with 3795 rows, 1280 columns and 11718 nonzeros Presolve time: 0.01s Presolved: 3795 rows, 1280 columns, 11718 nonzeros Variable types: 0 continuous, 1280 integer (1280 binary) Root relaxation: objective 0.000000e+00, 235 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 (1156 simplex iterations) in 0.05 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 20:05:33 2012 Optimize a model with 1953 rows, 947 columns and 5859 nonzeros Presolve time: 0.00s Presolved: 1953 rows, 947 columns, 5859 nonzeros Variable types: 0 continuous, 947 integer (947 binary) Root relaxation: objective 0.000000e+00, 264 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2957 simplex iterations) in 0.28 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 20:05:34 2012 Optimize a model with 2567 rows, 1058 columns and 7812 nonzeros Presolve time: 0.01s Presolved: 2567 rows, 1058 columns, 7812 nonzeros Variable types: 0 continuous, 1058 integer (1058 binary) Root relaxation: objective 0.000000e+00, 237 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 309 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 1s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 309 - 0.00000 - - 2s 0 0 0.00000 0 309 - 0.00000 - - 2s 0 2 0.00000 0 309 - 0.00000 - - 3s Cutting planes: Clique: 11 Zero half: 20 Explored 43 nodes (26761 simplex iterations) in 3.65 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 20:05:38 2012 Optimize a model with 3181 rows, 1169 columns and 9765 nonzeros Presolve time: 0.01s Presolved: 3181 rows, 1169 columns, 9765 nonzeros Variable types: 0 continuous, 1169 integer (1169 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 0 141 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 0.00000 0 163 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 1s 0 0 0.00000 0 277 - 0.00000 - - 1s 0 0 0.00000 0 124 - 0.00000 - - 1s 0 2 0.00000 0 91 - 0.00000 - - 1s * 125 2 30 0.0000000 0.00000 0.0% 70.1 2s Cutting planes: Clique: 5 Zero half: 1 Explored 126 nodes (26099 simplex iterations) in 2.28 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