current bounds on the number of colors: 0 -- 115 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:11 2012 Optimize a model with 36994 rows, 7202 columns and 117192 nonzeros Presolve time: 0.15s Presolved: 36994 rows, 7202 columns, 117192 nonzeros Variable types: 0 continuous, 7202 integer (7202 binary) Root relaxation: objective 0.000000e+00, 298 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 (543 simplex iterations) in 0.24 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:11 2012 Optimize a model with 18231 rows, 3867 columns and 57568 nonzeros Presolve time: 0.08s Presolved: 18231 rows, 3867 columns, 57568 nonzeros Variable types: 0 continuous, 3867 integer (3867 binary) Root relaxation: objective 0.000000e+00, 284 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 (520 simplex iterations) in 0.11 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:12 2012 Optimize a model with 9173 rows, 2257 columns and 28784 nonzeros Presolve time: 0.03s Presolved: 9173 rows, 2257 columns, 28784 nonzeros Variable types: 0 continuous, 2257 integer (2257 binary) Root relaxation: objective 0.000000e+00, 234 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 (463 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:12 2012 Optimize a model with 4644 rows, 1452 columns and 14392 nonzeros Presolve time: 0.01s Presolved: 4644 rows, 1452 columns, 14392 nonzeros Variable types: 0 continuous, 1452 integer (1452 binary) Root relaxation: objective 0.000000e+00, 253 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 (1102 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:12 2012 Optimize a model with 2056 rows, 992 columns and 6168 nonzeros Presolve time: 0.01s Presolved: 2056 rows, 992 columns, 6168 nonzeros Variable types: 0 continuous, 992 integer (992 binary) Root relaxation: objective 0.000000e+00, 249 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 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 2 Clique: 195 Zero half: 327 Explored 0 nodes (1226 simplex iterations) in 0.08 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:12 2012 Optimize a model with 3350 rows, 1222 columns and 10280 nonzeros Presolve time: 0.01s Presolved: 3350 rows, 1222 columns, 10280 nonzeros Variable types: 0 continuous, 1222 integer (1222 binary) Root relaxation: objective 0.000000e+00, 244 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 0 112 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 21 Zero half: 79 Explored 0 nodes (4936 simplex iterations) in 0.33 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 Thu Dec 13 20:21:13 2012 Optimize a model with 2703 rows, 1107 columns and 8224 nonzeros Presolve time: 0.01s Presolved: 2703 rows, 1107 columns, 8224 nonzeros Variable types: 0 continuous, 1107 integer (1107 binary) Root relaxation: objective 0.000000e+00, 262 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 0 228 - 0.00000 - - 0s 0 0 0.00000 0 126 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 1s 0 0 0.00000 0 316 - 0.00000 - - 1s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 2 0.00000 0 316 - 0.00000 - - 3s Cutting planes: Gomory: 1 Clique: 8 Zero half: 32 Explored 167 nodes (41256 simplex iterations) in 4.91 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