current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:16 2012 Optimize a model with 24942 rows, 5358 columns and 79380 nonzeros Presolve time: 0.13s Presolved: 24942 rows, 5358 columns, 79380 nonzeros Variable types: 0 continuous, 5358 integer (5358 binary) Root relaxation: objective 0.000000e+00, 344 iterations, 0.02 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 (583 simplex iterations) in 0.19 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 19:51:16 2012 Optimize a model with 12267 rows, 2883 columns and 38880 nonzeros Presolve time: 0.05s Presolved: 12267 rows, 2883 columns, 38880 nonzeros Variable types: 0 continuous, 2883 integer (2883 binary) Root relaxation: objective 0.000000e+00, 234 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 (432 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 19:51:17 2012 Optimize a model with 6183 rows, 1695 columns and 19440 nonzeros Presolve time: 0.02s Presolved: 6183 rows, 1695 columns, 19440 nonzeros Variable types: 0 continuous, 1695 integer (1695 binary) Root relaxation: objective 0.000000e+00, 205 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 (410 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 19:51:17 2012 Optimize a model with 3141 rows, 1101 columns and 9720 nonzeros Presolve time: 0.01s Presolved: 3141 rows, 1101 columns, 9720 nonzeros Variable types: 0 continuous, 1101 integer (1101 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 38 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1087 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 19:51:17 2012 Optimize a model with 1620 rows, 804 columns and 4860 nonzeros Presolve time: 0.00s Presolved: 1620 rows, 804 columns, 4860 nonzeros Variable types: 0 continuous, 804 integer (804 binary) Root relaxation: objective 0.000000e+00, 233 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 0 196 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2745 simplex iterations) in 0.24 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 19:51:17 2012 Optimize a model with 2127 rows, 903 columns and 6480 nonzeros Presolve time: 0.01s Presolved: 2127 rows, 903 columns, 6480 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 222 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 280 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 261 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 0 0.00000 0 257 - 0.00000 - - 2s 0 0 0.00000 0 265 - 0.00000 - - 2s 0 0 0.00000 0 263 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 2 0.00000 0 270 - 0.00000 - - 3s Cutting planes: Clique: 8 Zero half: 36 Explored 43 nodes (30476 simplex iterations) in 3.77 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 19:51:21 2012 Optimize a model with 2634 rows, 1002 columns and 8100 nonzeros Presolve time: 0.01s Presolved: 2634 rows, 1002 columns, 8100 nonzeros Variable types: 0 continuous, 1002 integer (1002 binary) Root relaxation: objective 0.000000e+00, 214 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 0 192 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 3 Clique: 170 MIR: 5 Zero half: 222 Explored 0 nodes (2944 simplex iterations) in 0.18 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