current bounds on the number of colors: 0 -- 110 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:04 2012 Optimize a model with 31625 rows, 6623 columns and 100595 nonzeros Presolve time: 0.15s Presolved: 31625 rows, 6623 columns, 100595 nonzeros Variable types: 0 continuous, 6623 integer (6623 binary) Root relaxation: objective 0.000000e+00, 323 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 (552 simplex iterations) in 0.21 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:05 2012 Optimize a model with 15581 rows, 3543 columns and 49383 nonzeros Presolve time: 0.06s Presolved: 15581 rows, 3543 columns, 49383 nonzeros Variable types: 0 continuous, 3543 integer (3543 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 (470 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:05 2012 Optimize a model with 7559 rows, 2003 columns and 23777 nonzeros Presolve time: 0.02s Presolved: 7559 rows, 2003 columns, 23777 nonzeros Variable types: 0 continuous, 2003 integer (2003 binary) Root relaxation: objective 0.000000e+00, 234 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 (468 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 20:04:05 2012 Optimize a model with 3548 rows, 1233 columns and 10974 nonzeros Presolve time: 0.01s Presolved: 3548 rows, 1233 columns, 10974 nonzeros Variable types: 0 continuous, 1233 integer (1233 binary) Root relaxation: objective 0.000000e+00, 229 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 (1063 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:06 2012 Optimize a model with 1829 rows, 903 columns and 5487 nonzeros Presolve time: 0.00s Presolved: 1829 rows, 903 columns, 5487 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 250 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 0 182 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3105 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:06 2012 Optimize a model with 2402 rows, 1013 columns and 7316 nonzeros Presolve time: 0.01s Presolved: 2402 rows, 1013 columns, 7316 nonzeros Variable types: 0 continuous, 1013 integer (1013 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 0 210 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 279 - 0.00000 - - 0s 0 0 0.00000 0 257 - 0.00000 - - 1s 0 0 0.00000 0 272 - 0.00000 - - 1s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 274 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 2 0.00000 0 284 - 0.00000 - - 2s Cutting planes: Clique: 14 Zero half: 22 Explored 217 nodes (46261 simplex iterations) in 4.41 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 20:04:10 2012 Optimize a model with 2975 rows, 1123 columns and 9145 nonzeros Presolve time: 0.01s Presolved: 2975 rows, 1123 columns, 9145 nonzeros Variable types: 0 continuous, 1123 integer (1123 binary) Root relaxation: objective 0.000000e+00, 239 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 0 206 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 166 MIR: 3 Zero half: 242 Explored 0 nodes (2277 simplex iterations) in 0.14 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