current bounds on the number of colors: 0 -- 135 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:49 2012 Optimize a model with 31893 rows, 9519 columns and 104319 nonzeros Presolve time: 0.15s Presolved: 31893 rows, 9519 columns, 104319 nonzeros Variable types: 0 continuous, 9519 integer (9519 binary) Root relaxation: objective 0.000000e+00, 463 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 (733 simplex iterations) in 0.22 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 -- 67 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:50 2012 Optimize a model with 15777 rows, 4929 columns and 51381 nonzeros Presolve time: 0.08s Presolved: 15777 rows, 4929 columns, 51381 nonzeros Variable types: 0 continuous, 4929 integer (4929 binary) Root relaxation: objective 0.000000e+00, 334 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 (564 simplex iterations) in 0.11 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 -- 33 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:50 2012 Optimize a model with 7719 rows, 2634 columns and 24912 nonzeros Presolve time: 0.03s Presolved: 7719 rows, 2634 columns, 24912 nonzeros Variable types: 0 continuous, 2634 integer (2634 binary) Root relaxation: objective 0.000000e+00, 276 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 (500 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:50 2012 Optimize a model with 3927 rows, 1554 columns and 12456 nonzeros Presolve time: 0.01s Presolved: 3927 rows, 1554 columns, 12456 nonzeros Variable types: 0 continuous, 1554 integer (1554 binary) Root relaxation: objective 0.000000e+00, 314 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 (564 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 18:36:50 2012 Optimize a model with 2031 rows, 1014 columns and 6228 nonzeros Presolve time: 0.01s Presolved: 2031 rows, 1014 columns, 6228 nonzeros Variable types: 0 continuous, 1014 integer (1014 binary) Root relaxation: objective 0.000000e+00, 297 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 0 240 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s Cutting planes: Clique: 4 Zero half: 4 Explored 0 nodes (2883 simplex iterations) in 0.15 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 18:36:51 2012 Optimize a model with 1083 rows, 744 columns and 3114 nonzeros Presolve removed 135 rows and 135 columns Presolve time: 0.00s Presolved: 948 rows, 609 columns, 2844 nonzeros Variable types: 0 continuous, 609 integer (609 binary) Root relaxation: objective 0.000000e+00, 143 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 0 135 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (582 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 18:36:51 2012 Optimize a model with 1557 rows, 879 columns and 4671 nonzeros Presolve time: 0.00s Presolved: 1557 rows, 879 columns, 4671 nonzeros Variable types: 0 continuous, 879 integer (879 binary) Root relaxation: objective 0.000000e+00, 322 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 0 258 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 0s 0 0 0.00000 0 307 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 0.00000 0 325 - 0.00000 - - 1s 0 0 0.00000 0 315 - 0.00000 - - 1s 0 0 0.00000 0 358 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 358 Explored 0 nodes (14237 simplex iterations) in 1.43 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 4