current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:45 2012 Optimize a model with 35057 rows, 6952 columns and 111160 nonzeros Presolve time: 0.14s Presolved: 35057 rows, 6952 columns, 111160 nonzeros Variable types: 0 continuous, 6952 integer (6952 binary) Root relaxation: objective 0.000000e+00, 295 iterations, 0.04 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 (537 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:45 2012 Optimize a model with 17585 rows, 3788 columns and 55580 nonzeros Presolve time: 0.07s Presolved: 17585 rows, 3788 columns, 55580 nonzeros Variable types: 0 continuous, 3788 integer (3788 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 (509 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:46 2012 Optimize a model with 8849 rows, 2206 columns and 27790 nonzeros Presolve time: 0.03s Presolved: 8849 rows, 2206 columns, 27790 nonzeros Variable types: 0 continuous, 2206 integer (2206 binary) Root relaxation: objective 0.000000e+00, 235 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 (455 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:46 2012 Optimize a model with 4481 rows, 1415 columns and 13895 nonzeros Presolve time: 0.01s Presolved: 4481 rows, 1415 columns, 13895 nonzeros Variable types: 0 continuous, 1415 integer (1415 binary) Root relaxation: objective 0.000000e+00, 242 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 (1387 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:46 2012 Optimize a model with 1985 rows, 963 columns and 5955 nonzeros Presolve time: 0.00s Presolved: 1985 rows, 963 columns, 5955 nonzeros Variable types: 0 continuous, 963 integer (963 binary) Root relaxation: objective 0.000000e+00, 251 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3795 simplex iterations) in 0.32 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:46 2012 Optimize a model with 3233 rows, 1189 columns and 9925 nonzeros Presolve time: 0.01s Presolved: 3233 rows, 1189 columns, 9925 nonzeros Variable types: 0 continuous, 1189 integer (1189 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 0.00000 0 132 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 0.00000 0 108 - 0.00000 - - 0s 0 0 0.00000 0 108 - 0.00000 - - 0s 0 0 0.00000 0 100 - 0.00000 - - 0s 0 0 0.00000 0 122 - 0.00000 - - 0s 0 0 0.00000 0 99 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (15128 simplex iterations) in 1.16 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:10:48 2012 Optimize a model with 2609 rows, 1076 columns and 7940 nonzeros Presolve time: 0.01s Presolved: 2609 rows, 1076 columns, 7940 nonzeros Variable types: 0 continuous, 1076 integer (1076 binary) Root relaxation: objective 0.000000e+00, 256 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 277 - 0.00000 - - 0s 0 0 0.00000 0 287 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 1s 0 0 0.00000 0 290 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 299 - 0.00000 - - 2s 0 0 0.00000 0 299 - 0.00000 - - 2s 0 2 0.00000 0 299 - 0.00000 - - 3s Cutting planes: Clique: 11 Zero half: 31 Explored 55 nodes (32978 simplex iterations) in 4.44 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