current bounds on the number of colors: 0 -- 122 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:08 2012 Optimize a model with 44408 rows, 8168 columns and 140300 nonzeros Presolve time: 0.15s Presolved: 44408 rows, 8168 columns, 140300 nonzeros Variable types: 0 continuous, 8168 integer (8168 binary) Root relaxation: objective 0.000000e+00, 328 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 (599 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 -- 61 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:09 2012 Optimize a model with 21902 rows, 4386 columns and 69000 nonzeros Presolve time: 0.10s Presolved: 21902 rows, 4386 columns, 69000 nonzeros Variable types: 0 continuous, 4386 integer (4386 binary) Root relaxation: objective 0.000000e+00, 298 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 (559 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 -- 30 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:10 2012 Optimize a model with 11012 rows, 2556 columns and 34500 nonzeros Presolve time: 0.04s Presolved: 11012 rows, 2556 columns, 34500 nonzeros Variable types: 0 continuous, 2556 integer (2556 binary) Root relaxation: objective 0.000000e+00, 248 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 (488 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 21:39:10 2012 Optimize a model with 5204 rows, 1580 columns and 16100 nonzeros Presolve time: 0.01s Presolved: 5204 rows, 1580 columns, 16100 nonzeros Variable types: 0 continuous, 1580 integer (1580 binary) Root relaxation: objective 0.000000e+00, 255 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 (947 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:10 2012 Optimize a model with 2300 rows, 1092 columns and 6900 nonzeros Presolve time: 0.01s Presolved: 2300 rows, 1092 columns, 6900 nonzeros Variable types: 0 continuous, 1092 integer (1092 binary) Root relaxation: objective 0.000000e+00, 266 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 0 242 - 0.00000 - - 0s 0 0 0.00000 0 277 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3701 simplex iterations) in 0.41 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 21:39:10 2012 Optimize a model with 3752 rows, 1336 columns and 11500 nonzeros Presolve time: 0.01s Presolved: 3752 rows, 1336 columns, 11500 nonzeros Variable types: 0 continuous, 1336 integer (1336 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 0 144 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 1s 0 0 0.00000 0 114 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 1s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 2 0.00000 0 326 - 0.00000 - - 4s 240 31 infeasible 25 - 0.00000 - 78.4 5s * 636 3 24 0.0000000 0.00000 0.0% 76.4 6s Cutting planes: Clique: 6 Zero half: 13 Explored 637 nodes (78420 simplex iterations) in 6.48 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 21:39:17 2012 Optimize a model with 3026 rows, 1214 columns and 9200 nonzeros Presolve time: 0.01s Presolved: 3026 rows, 1214 columns, 9200 nonzeros Variable types: 0 continuous, 1214 integer (1214 binary) Root relaxation: objective 0.000000e+00, 273 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 0 244 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 355 - 0.00000 - - 1s 0 0 0.00000 0 348 - 0.00000 - - 1s 0 0 0.00000 0 346 - 0.00000 - - 2s 0 0 0.00000 0 342 - 0.00000 - - 3s 0 0 0.00000 0 345 - 0.00000 - - 3s 0 0 0.00000 0 342 - 0.00000 - - 4s 0 0 0.00000 0 342 - 0.00000 - - 4s 0 0 0.00000 0 342 - 0.00000 - - 5s 0 2 0.00000 0 342 - 0.00000 - - 5s Cutting planes: Clique: 10 Zero half: 21 Explored 17 nodes (30846 simplex iterations) in 6.34 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