current bounds on the number of colors: 0 -- 104 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:55:12 2012 Optimize a model with 28912 rows, 5962 columns and 91832 nonzeros Presolve time: 0.14s Presolved: 28912 rows, 5962 columns, 91832 nonzeros Variable types: 0 continuous, 5962 integer (5962 binary) Root relaxation: objective 0.000000e+00, 291 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 (509 simplex iterations) in 0.19 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 -- 52 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:55:13 2012 Optimize a model with 14508 rows, 3258 columns and 45916 nonzeros Presolve time: 0.06s Presolved: 14508 rows, 3258 columns, 45916 nonzeros Variable types: 0 continuous, 3258 integer (3258 binary) Root relaxation: objective 0.000000e+00, 230 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 (466 simplex iterations) in 0.09 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 -- 26 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:55:13 2012 Optimize a model with 7306 rows, 1906 columns and 22958 nonzeros Presolve time: 0.02s Presolved: 7306 rows, 1906 columns, 22958 nonzeros Variable types: 0 continuous, 1906 integer (1906 binary) Root relaxation: objective 0.000000e+00, 218 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 (413 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:55:13 2012 Optimize a model with 3428 rows, 1178 columns and 10596 nonzeros Presolve time: 0.01s Presolved: 3428 rows, 1178 columns, 10596 nonzeros Variable types: 0 continuous, 1178 integer (1178 binary) Root relaxation: objective 0.000000e+00, 227 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 15 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1384 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:55:13 2012 Optimize a model with 1766 rows, 866 columns and 5298 nonzeros Presolve time: 0.00s Presolved: 1766 rows, 866 columns, 5298 nonzeros Variable types: 0 continuous, 866 integer (866 binary) Root relaxation: objective 0.000000e+00, 230 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 0 158 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3209 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 19:55:13 2012 Optimize a model with 2320 rows, 970 columns and 7064 nonzeros Presolve time: 0.01s Presolved: 2320 rows, 970 columns, 7064 nonzeros Variable types: 0 continuous, 970 integer (970 binary) Root relaxation: objective 0.000000e+00, 230 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 0 208 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 0s 0 0 0.00000 0 276 - 0.00000 - - 0s 0 0 0.00000 0 272 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 2 0.00000 0 284 - 0.00000 - - 1s Cutting planes: Clique: 10 Zero half: 33 Explored 23 nodes (17706 simplex iterations) in 2.21 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 19:55:16 2012 Optimize a model with 2874 rows, 1074 columns and 8830 nonzeros Presolve time: 0.01s Presolved: 2874 rows, 1074 columns, 8830 nonzeros Variable types: 0 continuous, 1074 integer (1074 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 0 194 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 143 - 0.00000 - - 0s 0 0 0.00000 0 253 - 0.00000 - - 0s 0 0 0.00000 0 167 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 4 Zero half: 3 Explored 0 nodes (11546 simplex iterations) in 1.01 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