current bounds on the number of colors: 0 -- 119 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:24 2012 Optimize a model with 40121 rows, 7699 columns and 127027 nonzeros Presolve time: 0.15s Presolved: 40121 rows, 7699 columns, 127027 nonzeros Variable types: 0 continuous, 7699 integer (7699 binary) Root relaxation: objective 0.000000e+00, 306 iterations, 0.05 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 (572 simplex iterations) in 0.25 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:25 2012 Optimize a model with 19781 rows, 4129 columns and 62437 nonzeros Presolve time: 0.09s Presolved: 19781 rows, 4129 columns, 62437 nonzeros Variable types: 0 continuous, 4129 integer (4129 binary) Root relaxation: objective 0.000000e+00, 309 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 (567 simplex iterations) in 0.12 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:25 2012 Optimize a model with 9611 rows, 2344 columns and 30142 nonzeros Presolve time: 0.03s Presolved: 9611 rows, 2344 columns, 30142 nonzeros Variable types: 0 continuous, 2344 integer (2344 binary) Root relaxation: objective 0.000000e+00, 242 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 (620 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:25 2012 Optimize a model with 4865 rows, 1511 columns and 15071 nonzeros Presolve time: 0.01s Presolved: 4865 rows, 1511 columns, 15071 nonzeros Variable types: 0 continuous, 1511 integer (1511 binary) Root relaxation: objective 0.000000e+00, 261 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 (586 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:25 2012 Optimize a model with 2153 rows, 1035 columns and 6459 nonzeros Presolve time: 0.01s Presolved: 2153 rows, 1035 columns, 6459 nonzeros Variable types: 0 continuous, 1035 integer (1035 binary) Root relaxation: objective 0.000000e+00, 265 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 0 236 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3477 simplex iterations) in 0.37 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 20:54:26 2012 Optimize a model with 3509 rows, 1273 columns and 10765 nonzeros Presolve time: 0.01s Presolved: 3509 rows, 1273 columns, 10765 nonzeros Variable types: 0 continuous, 1273 integer (1273 binary) Root relaxation: objective 0.000000e+00, 251 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 227 - 0.00000 - - 0s 0 0 0.00000 0 319 - 0.00000 - - 0s 0 0 0.00000 0 265 - 0.00000 - - 1s 0 0 0.00000 0 226 - 0.00000 - - 1s 0 0 0.00000 0 216 - 0.00000 - - 2s 0 0 0.00000 0 179 - 0.00000 - - 2s 0 0 0.00000 0 242 - 0.00000 - - 2s 0 0 0.00000 0 287 - 0.00000 - - 3s 0 0 0.00000 0 287 - 0.00000 - - 3s 0 2 0.00000 0 287 - 0.00000 - - 3s * 113 4 29 0.0000000 0.00000 0.0% 68.6 4s Cutting planes: Clique: 3 Zero half: 15 Explored 114 nodes (37275 simplex iterations) in 4.24 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:30 2012 Optimize a model with 2831 rows, 1154 columns and 8612 nonzeros Presolve time: 0.01s Presolved: 2831 rows, 1154 columns, 8612 nonzeros Variable types: 0 continuous, 1154 integer (1154 binary) Root relaxation: objective 0.000000e+00, 265 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 357 - 0.00000 - - 0s 0 0 0.00000 0 323 - 0.00000 - - 1s 0 0 0.00000 0 303 - 0.00000 - - 2s 0 0 0.00000 0 308 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 3s 0 0 0.00000 0 306 - 0.00000 - - 3s 0 0 0.00000 0 307 - 0.00000 - - 4s 0 0 0.00000 0 307 - 0.00000 - - 4s 0 2 0.00000 0 307 - 0.00000 - - 5s Cutting planes: Clique: 17 Zero half: 18 Explored 85 nodes (46188 simplex iterations) in 6.92 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