current bounds on the number of colors: 0 -- 95 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:54 2012 Optimize a model with 21386 rows, 4918 columns and 68338 nonzeros Presolve time: 0.12s Presolved: 21386 rows, 4918 columns, 68338 nonzeros Variable types: 0 continuous, 4918 integer (4918 binary) Root relaxation: objective 0.000000e+00, 287 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 (480 simplex iterations) in 0.16 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 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:54 2012 Optimize a model with 10514 rows, 2638 columns and 33442 nonzeros Presolve time: 0.04s Presolved: 10514 rows, 2638 columns, 33442 nonzeros Variable types: 0 continuous, 2638 integer (2638 binary) Root relaxation: objective 0.000000e+00, 233 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 (439 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:54 2012 Optimize a model with 5078 rows, 1498 columns and 15994 nonzeros Presolve time: 0.02s Presolved: 5078 rows, 1498 columns, 15994 nonzeros Variable types: 0 continuous, 1498 integer (1498 binary) Root relaxation: objective 0.000000e+00, 198 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 (366 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:54 2012 Optimize a model with 2360 rows, 928 columns and 7270 nonzeros Presolve time: 0.01s Presolved: 2360 rows, 928 columns, 7270 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Root relaxation: objective 0.000000e+00, 197 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 51 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2040 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:55 2012 Optimize a model with 1001 rows, 643 columns and 2908 nonzeros Presolve removed 95 rows and 95 columns Presolve time: 0.00s Presolved: 906 rows, 548 columns, 2718 nonzeros Variable types: 0 continuous, 548 integer (548 binary) Root relaxation: objective 0.000000e+00, 99 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 95 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (413 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:55 2012 Optimize a model with 1454 rows, 738 columns and 4362 nonzeros Presolve time: 0.00s Presolved: 1454 rows, 738 columns, 4362 nonzeros Variable types: 0 continuous, 738 integer (738 binary) Root relaxation: objective 0.000000e+00, 213 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 0 146 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2806 simplex iterations) in 0.19 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:55 2012 Optimize a model with 1907 rows, 833 columns and 5816 nonzeros Presolve time: 0.00s Presolved: 1907 rows, 833 columns, 5816 nonzeros Variable types: 0 continuous, 833 integer (833 binary) Root relaxation: objective 0.000000e+00, 208 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 0 186 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 235 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 197 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 1s 0 0 0.00000 0 227 - 0.00000 - - 1s 0 0 0.00000 0 230 - 0.00000 - - 1s 0 0 0.00000 0 230 - 0.00000 - - 1s 0 2 0.00000 0 230 - 0.00000 - - 1s Cutting planes: Clique: 9 Zero half: 20 Explored 71 nodes (23058 simplex iterations) in 2.08 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