current bounds on the number of colors: 0 -- 112 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:22 2012 Optimize a model with 34328 rows, 6883 columns and 108920 nonzeros Presolve time: 0.15s Presolved: 34328 rows, 6883 columns, 108920 nonzeros Variable types: 0 continuous, 6883 integer (6883 binary) Root relaxation: objective 0.000000e+00, 341 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 (751 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:22 2012 Optimize a model with 17220 rows, 3747 columns and 54460 nonzeros Presolve time: 0.07s Presolved: 17220 rows, 3747 columns, 54460 nonzeros Variable types: 0 continuous, 3747 integer (3747 binary) Root relaxation: objective 0.000000e+00, 272 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 (494 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:22 2012 Optimize a model with 8666 rows, 2179 columns and 27230 nonzeros Presolve time: 0.03s Presolved: 8666 rows, 2179 columns, 27230 nonzeros Variable types: 0 continuous, 2179 integer (2179 binary) Root relaxation: objective 0.000000e+00, 236 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 (574 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 20:08:23 2012 Optimize a model with 4389 rows, 1395 columns and 13615 nonzeros Presolve time: 0.01s Presolved: 4389 rows, 1395 columns, 13615 nonzeros Variable types: 0 continuous, 1395 integer (1395 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (824 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 20:08:23 2012 Optimize a model with 1945 rows, 947 columns and 5835 nonzeros Presolve time: 0.00s Presolved: 1945 rows, 947 columns, 5835 nonzeros Variable types: 0 continuous, 947 integer (947 binary) Root relaxation: objective 0.000000e+00, 246 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 0 178 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2758 simplex iterations) in 0.25 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 20:08:23 2012 Optimize a model with 3167 rows, 1171 columns and 9725 nonzeros Presolve time: 0.01s Presolved: 3167 rows, 1171 columns, 9725 nonzeros Variable types: 0 continuous, 1171 integer (1171 binary) Root relaxation: objective 0.000000e+00, 236 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 145 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 0.00000 0 300 - 0.00000 - - 0s 0 0 0.00000 0 198 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Zero half: 1 Explored 0 nodes (10914 simplex iterations) in 1.07 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:24 2012 Optimize a model with 2556 rows, 1059 columns and 7780 nonzeros Presolve time: 0.01s Presolved: 2556 rows, 1059 columns, 7780 nonzeros Variable types: 0 continuous, 1059 integer (1059 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 1s 0 0 0.00000 0 318 - 0.00000 - - 1s 0 0 0.00000 0 235 - 0.00000 - - 1s 0 0 0.00000 0 198 - 0.00000 - - 2s 0 0 0.00000 0 194 - 0.00000 - - 2s 0 0 0.00000 0 310 - 0.00000 - - 2s 0 0 0.00000 0 297 - 0.00000 - - 3s 0 0 0.00000 0 296 - 0.00000 - - 3s 0 0 0.00000 0 290 - 0.00000 - - 3s 0 0 0.00000 0 286 - 0.00000 - - 4s 0 0 0.00000 0 289 - 0.00000 - - 4s 0 0 0.00000 0 289 - 0.00000 - - 4s 0 2 0.00000 0 289 - 0.00000 - - 5s Cutting planes: Clique: 16 Zero half: 34 Explored 161 nodes (67185 simplex iterations) in 7.50 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