current bounds on the number of colors: 0 -- 110 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:30 2012 Optimize a model with 33110 rows, 6650 columns and 105050 nonzeros Presolve time: 0.15s Presolved: 33110 rows, 6650 columns, 105050 nonzeros Variable types: 0 continuous, 6650 integer (6650 binary) Root relaxation: objective 0.000000e+00, 410 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 (791 simplex iterations) in 0.25 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:31 2012 Optimize a model with 16310 rows, 3570 columns and 51570 nonzeros Presolve time: 0.07s Presolved: 16310 rows, 3570 columns, 51570 nonzeros Variable types: 0 continuous, 3570 integer (3570 binary) Root relaxation: objective 0.000000e+00, 297 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 (536 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:31 2012 Optimize a model with 7910 rows, 2030 columns and 24830 nonzeros Presolve time: 0.02s Presolved: 7910 rows, 2030 columns, 24830 nonzeros Variable types: 0 continuous, 2030 integer (2030 binary) Root relaxation: objective 0.000000e+00, 226 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 (419 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:31 2012 Optimize a model with 3710 rows, 1260 columns and 11460 nonzeros Presolve time: 0.01s Presolved: 3710 rows, 1260 columns, 11460 nonzeros Variable types: 0 continuous, 1260 integer (1260 binary) Root relaxation: objective 0.000000e+00, 246 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 90 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2238 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:32 2012 Optimize a model with 1910 rows, 930 columns and 5730 nonzeros Presolve time: 0.00s Presolved: 1910 rows, 930 columns, 5730 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Root relaxation: objective 0.000000e+00, 262 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3063 simplex iterations) in 0.31 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 20:03:32 2012 Optimize a model with 2510 rows, 1040 columns and 7640 nonzeros Presolve time: 0.01s Presolved: 2510 rows, 1040 columns, 7640 nonzeros Variable types: 0 continuous, 1040 integer (1040 binary) Root relaxation: objective 0.000000e+00, 248 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 0 136 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 1s 0 0 0.00000 0 250 - 0.00000 - - 2s 0 0 0.00000 0 291 - 0.00000 - - 2s 0 0 0.00000 0 286 - 0.00000 - - 3s 0 0 0.00000 0 281 - 0.00000 - - 3s 0 0 0.00000 0 295 - 0.00000 - - 3s 0 0 0.00000 0 289 - 0.00000 - - 3s 0 2 0.00000 0 289 - 0.00000 - - 4s Cutting planes: Clique: 13 Zero half: 20 Explored 42 nodes (36546 simplex iterations) in 4.88 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 20:03:37 2012 Optimize a model with 3110 rows, 1150 columns and 9550 nonzeros Presolve time: 0.01s Presolved: 3110 rows, 1150 columns, 9550 nonzeros Variable types: 0 continuous, 1150 integer (1150 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 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 115 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 0s 0 0 0.00000 0 251 - 0.00000 - - 0s 0 0 0.00000 0 259 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 1s 0 0 0.00000 0 223 - 0.00000 - - 1s 0 0 0.00000 0 223 - 0.00000 - - 1s 0 2 0.00000 0 223 - 0.00000 - - 1s * 104 3 34 0.0000000 0.00000 0.0% 59.4 2s Cutting planes: Clique: 6 Zero half: 13 Explored 105 nodes (23642 simplex iterations) in 2.23 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% optimal solution found: number of colors: 5