current bounds on the number of colors: 0 -- 123 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:34 2012 Optimize a model with 22144 rows, 7864 columns and 73566 nonzeros Presolve time: 0.12s Presolved: 22144 rows, 7864 columns, 73566 nonzeros Variable types: 0 continuous, 7864 integer (7864 binary) Root relaxation: objective 0.000000e+00, 371 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 (601 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 -- 61 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:34 2012 Optimize a model with 10953 rows, 4051 columns and 36180 nonzeros Presolve time: 0.05s Presolved: 10953 rows, 4051 columns, 36180 nonzeros Variable types: 0 continuous, 4051 integer (4051 binary) Root relaxation: objective 0.000000e+00, 298 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 (506 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 -- 30 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:34 2012 Optimize a model with 5538 rows, 2206 columns and 18090 nonzeros Presolve time: 0.02s Presolved: 5538 rows, 2206 columns, 18090 nonzeros Variable types: 0 continuous, 2206 integer (2206 binary) Root relaxation: objective 0.000000e+00, 248 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 (450 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 -- 15 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:34 2012 Optimize a model with 2650 rows, 1222 columns and 8442 nonzeros Presolve time: 0.01s Presolved: 2650 rows, 1222 columns, 8442 nonzeros Variable types: 0 continuous, 1222 integer (1222 binary) Root relaxation: objective 0.000000e+00, 280 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 (462 simplex iterations) in 0.02 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 -- 7 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:35 2012 Optimize a model with 1206 rows, 730 columns and 3618 nonzeros Presolve time: 0.00s Presolved: 1206 rows, 730 columns, 3618 nonzeros Variable types: 0 continuous, 730 integer (730 binary) Root relaxation: objective 0.000000e+00, 299 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 0 230 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 0.00000 0 291 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 0s 0 0 0.00000 0 288 - 0.00000 - - 0s 0 0 0.00000 0 288 - 0.00000 - - 0s 0 2 0.00000 0 288 - 0.00000 - - 0s Cutting planes: Zero half: 13 Explored 12 nodes (11514 simplex iterations) in 0.81 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: 3 -- 7 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:35 2012 Optimize a model with 1928 rows, 976 columns and 6030 nonzeros Presolve time: 0.01s Presolved: 1928 rows, 976 columns, 6030 nonzeros Variable types: 0 continuous, 976 integer (976 binary) Root relaxation: objective 0.000000e+00, 269 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 (772 simplex iterations) in 0.02 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:31:35 2012 Optimize a model with 1567 rows, 853 columns and 4824 nonzeros Presolve time: 0.00s Presolved: 1567 rows, 853 columns, 4824 nonzeros Variable types: 0 continuous, 853 integer (853 binary) Root relaxation: objective 0.000000e+00, 282 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 (1202 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% optimal solution found: number of colors: 4