current bounds on the number of colors: 0 -- 119 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:51:53 2012 Optimize a model with 42186 rows, 7734 columns and 133222 nonzeros Presolve time: 0.16s Presolved: 42186 rows, 7734 columns, 133222 nonzeros Variable types: 0 continuous, 7734 integer (7734 binary) Root relaxation: objective 0.000000e+00, 316 iterations, 0.05 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 (579 simplex iterations) in 0.26 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:51:54 2012 Optimize a model with 20796 rows, 4164 columns and 65482 nonzeros Presolve time: 0.09s Presolved: 20796 rows, 4164 columns, 65482 nonzeros Variable types: 0 continuous, 4164 integer (4164 binary) Root relaxation: objective 0.000000e+00, 293 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 (635 simplex iterations) in 0.14 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:51:54 2012 Optimize a model with 10101 rows, 2379 columns and 31612 nonzeros Presolve time: 0.03s Presolved: 10101 rows, 2379 columns, 31612 nonzeros Variable types: 0 continuous, 2379 integer (2379 binary) Root relaxation: objective 0.000000e+00, 246 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 (666 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:51:54 2012 Optimize a model with 5110 rows, 1546 columns and 15806 nonzeros Presolve time: 0.01s Presolved: 5110 rows, 1546 columns, 15806 nonzeros Variable types: 0 continuous, 1546 integer (1546 binary) Root relaxation: objective 0.000000e+00, 244 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 (588 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:51:54 2012 Optimize a model with 2258 rows, 1070 columns and 6774 nonzeros Presolve time: 0.01s Presolved: 2258 rows, 1070 columns, 6774 nonzeros Variable types: 0 continuous, 1070 integer (1070 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 241 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3920 simplex iterations) in 0.47 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 20:51:55 2012 Optimize a model with 3684 rows, 1308 columns and 11290 nonzeros Presolve time: 0.01s Presolved: 3684 rows, 1308 columns, 11290 nonzeros Variable types: 0 continuous, 1308 integer (1308 binary) Root relaxation: objective 0.000000e+00, 257 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 0 236 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 1s 0 0 0.00000 0 256 - 0.00000 - - 1s 0 0 0.00000 0 265 - 0.00000 - - 2s 0 0 0.00000 0 241 - 0.00000 - - 2s 0 0 0.00000 0 287 - 0.00000 - - 2s 0 0 0.00000 0 277 - 0.00000 - - 3s 0 2 0.00000 0 277 - 0.00000 - - 3s 352 49 0.00000 20 168 - 0.00000 - 84.3 5s 607 70 0.00000 7 281 - 0.00000 - 76.7 11s 612 73 0.00000 22 275 - 0.00000 - 76.0 15s 1047 39 0.00000 33 208 - 0.00000 - 129 20s * 1373 0 36 0.0000000 0.00000 0.0% 132 22s Cutting planes: Clique: 7 Zero half: 15 Explored 1374 nodes (204821 simplex iterations) in 22.51 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 20:52:17 2012 Optimize a model with 2971 rows, 1189 columns and 9032 nonzeros Presolve time: 0.01s Presolved: 2971 rows, 1189 columns, 9032 nonzeros Variable types: 0 continuous, 1189 integer (1189 binary) Root relaxation: objective 0.000000e+00, 263 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 0.00000 0 343 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 1s 0 0 0.00000 0 332 - 0.00000 - - 1s 0 0 0.00000 0 323 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 3s 0 0 0.00000 0 322 - 0.00000 - - 3s 0 0 0.00000 0 332 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 4s 0 0 0.00000 0 329 - 0.00000 - - 5s 0 0 0.00000 0 329 - 0.00000 - - 5s 0 2 0.00000 0 329 - 0.00000 - - 6s Cutting planes: Clique: 16 Zero half: 17 Explored 39 nodes (37451 simplex iterations) in 7.03 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