current bounds on the number of colors: 0 -- 98 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:36 2012 Optimize a model with 22589 rows, 5261 columns and 72275 nonzeros Presolve time: 0.13s Presolved: 22589 rows, 5261 columns, 72275 nonzeros Variable types: 0 continuous, 5261 integer (5261 binary) Root relaxation: objective 0.000000e+00, 264 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 (463 simplex iterations) in 0.17 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 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:36 2012 Optimize a model with 11114 rows, 2811 columns and 35400 nonzeros Presolve time: 0.04s Presolved: 11114 rows, 2811 columns, 35400 nonzeros Variable types: 0 continuous, 2811 integer (2811 binary) Root relaxation: objective 0.000000e+00, 207 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 (452 simplex iterations) in 0.07 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: 0 -- 24 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:37 2012 Optimize a model with 5606 rows, 1635 columns and 17700 nonzeros Presolve time: 0.02s Presolved: 5606 rows, 1635 columns, 17700 nonzeros Variable types: 0 continuous, 1635 integer (1635 binary) Root relaxation: objective 0.000000e+00, 202 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 (365 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:37 2012 Optimize a model with 2852 rows, 1047 columns and 8850 nonzeros Presolve time: 0.01s Presolved: 2852 rows, 1047 columns, 8850 nonzeros Variable types: 0 continuous, 1047 integer (1047 binary) Root relaxation: objective 0.000000e+00, 217 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 92 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1106 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:50:37 2012 Optimize a model with 1475 rows, 753 columns and 4425 nonzeros Presolve time: 0.00s Presolved: 1475 rows, 753 columns, 4425 nonzeros Variable types: 0 continuous, 753 integer (753 binary) Root relaxation: objective 0.000000e+00, 219 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 0 158 - 0.00000 - - 0s 0 0 0.00000 0 192 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2459 simplex iterations) in 0.18 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 19:50:37 2012 Optimize a model with 1934 rows, 851 columns and 5900 nonzeros Presolve time: 0.00s Presolved: 1934 rows, 851 columns, 5900 nonzeros Variable types: 0 continuous, 851 integer (851 binary) Root relaxation: objective 0.000000e+00, 217 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 0 168 - 0.00000 - - 0s 0 0 0.00000 0 130 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 276 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 0.00000 0 174 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 1s 0 0 0.00000 0 252 - 0.00000 - - 1s 0 0 0.00000 0 242 - 0.00000 - - 1s 0 0 0.00000 0 242 - 0.00000 - - 1s 0 0 0.00000 0 242 - 0.00000 - - 1s 0 2 0.00000 0 242 - 0.00000 - - 1s Cutting planes: Clique: 9 Zero half: 23 Explored 344 nodes (49139 simplex iterations) in 3.34 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 19:50:40 2012 Optimize a model with 2393 rows, 949 columns and 7375 nonzeros Presolve time: 0.01s Presolved: 2393 rows, 949 columns, 7375 nonzeros Variable types: 0 continuous, 949 integer (949 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 0 182 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1052 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% optimal solution found: number of colors: 5