current bounds on the number of colors: 0 -- 124 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:07:27 2012 Optimize a model with 47058 rows, 8445 columns and 148490 nonzeros Presolve time: 0.16s Presolved: 47058 rows, 8445 columns, 148490 nonzeros Variable types: 0 continuous, 8445 integer (8445 binary) Root relaxation: objective 0.000000e+00, 297 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 (582 simplex iterations) in 0.28 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 -- 62 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:07:28 2012 Optimize a model with 23591 rows, 4601 columns and 74245 nonzeros Presolve time: 0.10s Presolved: 23591 rows, 4601 columns, 74245 nonzeros Variable types: 0 continuous, 4601 integer (4601 binary) Root relaxation: objective 0.000000e+00, 300 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 (564 simplex iterations) in 0.16 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: 0 -- 31 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:07:28 2012 Optimize a model with 11479 rows, 2617 columns and 35925 nonzeros Presolve time: 0.04s Presolved: 11479 rows, 2617 columns, 35925 nonzeros Variable types: 0 continuous, 2617 integer (2617 binary) Root relaxation: objective 0.000000e+00, 265 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 (514 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:07:29 2012 Optimize a model with 5423 rows, 1625 columns and 16765 nonzeros Presolve time: 0.01s Presolved: 5423 rows, 1625 columns, 16765 nonzeros Variable types: 0 continuous, 1625 integer (1625 binary) Root relaxation: objective 0.000000e+00, 268 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 (1189 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 22:07:29 2012 Optimize a model with 2395 rows, 1129 columns and 7185 nonzeros Presolve time: 0.01s Presolved: 2395 rows, 1129 columns, 7185 nonzeros Variable types: 0 continuous, 1129 integer (1129 binary) Root relaxation: objective 0.000000e+00, 288 iterations, 0.01 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 0 248 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3904 simplex iterations) in 0.40 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 22:07:29 2012 Optimize a model with 3909 rows, 1377 columns and 11975 nonzeros Presolve time: 0.01s Presolved: 3909 rows, 1377 columns, 11975 nonzeros Variable types: 0 continuous, 1377 integer (1377 binary) Root relaxation: objective 0.000000e+00, 277 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 148 - 0.00000 - - 1s 0 0 0.00000 0 281 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 2 0.00000 0 296 - 0.00000 - - 3s 385 81 0.00000 25 254 - 0.00000 - 94.0 5s 608 92 0.00000 20 290 - 0.00000 - 90.1 10s 650 118 0.00000 29 198 - 0.00000 - 138 15s 1097 83 0.00000 37 263 - 0.00000 - 153 20s 1550 72 0.00000 31 233 - 0.00000 - 162 25s 2076 104 infeasible 33 - 0.00000 - 163 30s * 2495 2 34 0.0000000 0.00000 0.0% 163 34s Cutting planes: Clique: 4 Zero half: 6 Explored 2496 nodes (427856 simplex iterations) in 34.08 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 22:08:03 2012 Optimize a model with 3152 rows, 1253 columns and 9580 nonzeros Presolve time: 0.01s Presolved: 3152 rows, 1253 columns, 9580 nonzeros Variable types: 0 continuous, 1253 integer (1253 binary) Root relaxation: objective 0.000000e+00, 265 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 0 246 - 0.00000 - - 0s 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 358 - 0.00000 - - 1s 0 0 0.00000 0 378 - 0.00000 - - 1s 0 0 0.00000 0 370 - 0.00000 - - 2s 0 0 0.00000 0 366 - 0.00000 - - 3s 0 0 0.00000 0 356 - 0.00000 - - 3s 0 0 0.00000 0 352 - 0.00000 - - 4s 0 0 0.00000 0 352 - 0.00000 - - 5s 0 0 0.00000 0 349 - 0.00000 - - 6s 0 0 0.00000 0 364 - 0.00000 - - 6s 0 0 0.00000 0 364 - 0.00000 - - 7s 0 0 0.00000 0 364 - 0.00000 - - 7s 0 2 0.00000 0 364 - 0.00000 - - 8s Cutting planes: Clique: 17 Zero half: 21 Explored 33 nodes (43174 simplex iterations) in 8.95 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