current bounds on the number of colors: 0 -- 137 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:23 2012 Optimize a model with 34001 rows, 9814 columns and 110908 nonzeros Presolve time: 0.15s Presolved: 34001 rows, 9814 columns, 110908 nonzeros Variable types: 0 continuous, 9814 integer (9814 binary) Root relaxation: objective 0.000000e+00, 467 iterations, 0.03 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 (740 simplex iterations) in 0.23 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 -- 68 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:23 2012 Optimize a model with 17069 rows, 5156 columns and 55454 nonzeros Presolve time: 0.08s Presolved: 17069 rows, 5156 columns, 55454 nonzeros Variable types: 0 continuous, 5156 integer (5156 binary) Root relaxation: objective 0.000000e+00, 349 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 (642 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 -- 34 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:24 2012 Optimize a model with 8603 rows, 2827 columns and 27727 nonzeros Presolve time: 0.03s Presolved: 8603 rows, 2827 columns, 27727 nonzeros Variable types: 0 continuous, 2827 integer (2827 binary) Root relaxation: objective 0.000000e+00, 278 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 (534 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:24 2012 Optimize a model with 4121 rows, 1594 columns and 13048 nonzeros Presolve time: 0.01s Presolved: 4121 rows, 1594 columns, 13048 nonzeros Variable types: 0 continuous, 1594 integer (1594 binary) Root relaxation: objective 0.000000e+00, 303 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 (546 simplex iterations) in 0.02 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:24 2012 Optimize a model with 2129 rows, 1046 columns and 6524 nonzeros Presolve time: 0.01s Presolved: 2129 rows, 1046 columns, 6524 nonzeros Variable types: 0 continuous, 1046 integer (1046 binary) Root relaxation: objective 0.000000e+00, 327 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 0 248 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 0.00000 0 239 - 0.00000 - - 0s 0 0 0.00000 0 261 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 1 Zero half: 2 Explored 0 nodes (5527 simplex iterations) in 0.35 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:24 2012 Optimize a model with 1133 rows, 772 columns and 3262 nonzeros Presolve removed 137 rows and 137 columns Presolve time: 0.00s Presolved: 996 rows, 635 columns, 2988 nonzeros Variable types: 0 continuous, 635 integer (635 binary) Root relaxation: objective 0.000000e+00, 144 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 0 137 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (610 simplex iterations) in 0.01 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: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:24 2012 Optimize a model with 1631 rows, 909 columns and 4893 nonzeros Presolve time: 0.00s Presolved: 1631 rows, 909 columns, 4893 nonzeros Variable types: 0 continuous, 909 integer (909 binary) Root relaxation: objective 0.000000e+00, 314 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 0 266 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 310 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 0s 0 0 0.00000 0 365 - 0.00000 - - 0s 0 0 0.00000 0 337 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 1s 0 0 0.00000 0 355 - 0.00000 - - 1s 0 0 0.00000 0 258 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 2 0.00000 0 324 - 0.00000 - - 1s Cutting planes: Gomory: 1 Zero half: 12 Explored 3 nodes (18637 simplex iterations) in 1.81 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 4