current bounds on the number of colors: 0 -- 116 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:28:31 2012 Optimize a model with 38512 rows, 7390 columns and 121916 nonzeros Presolve time: 0.15s Presolved: 38512 rows, 7390 columns, 121916 nonzeros Variable types: 0 continuous, 7390 integer (7390 binary) Root relaxation: objective 0.000000e+00, 283 iterations, 0.04 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 (535 simplex iterations) in 0.24 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:28:31 2012 Optimize a model with 19314 rows, 4026 columns and 60958 nonzeros Presolve time: 0.08s Presolved: 19314 rows, 4026 columns, 60958 nonzeros Variable types: 0 continuous, 4026 integer (4026 binary) Root relaxation: objective 0.000000e+00, 285 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 (518 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:28:32 2012 Optimize a model with 9384 rows, 2286 columns and 29428 nonzeros Presolve time: 0.03s Presolved: 9384 rows, 2286 columns, 29428 nonzeros Variable types: 0 continuous, 2286 integer (2286 binary) Root relaxation: objective 0.000000e+00, 237 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 (475 simplex iterations) in 0.05 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 20:28:32 2012 Optimize a model with 4750 rows, 1474 columns and 14714 nonzeros Presolve time: 0.01s Presolved: 4750 rows, 1474 columns, 14714 nonzeros Variable types: 0 continuous, 1474 integer (1474 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (850 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 20:28:32 2012 Optimize a model with 2102 rows, 1010 columns and 6306 nonzeros Presolve time: 0.01s Presolved: 2102 rows, 1010 columns, 6306 nonzeros Variable types: 0 continuous, 1010 integer (1010 binary) Root relaxation: objective 0.000000e+00, 254 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 0.00000 0 236 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3397 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:28:32 2012 Optimize a model with 3426 rows, 1242 columns and 10510 nonzeros Presolve time: 0.01s Presolved: 3426 rows, 1242 columns, 10510 nonzeros Variable types: 0 continuous, 1242 integer (1242 binary) Root relaxation: objective 0.000000e+00, 241 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 275 - 0.00000 - - 0s 0 0 0.00000 0 235 - 0.00000 - - 1s 0 0 0.00000 0 270 - 0.00000 - - 1s 0 0 0.00000 0 270 - 0.00000 - - 1s 0 2 0.00000 0 270 - 0.00000 - - 2s * 320 3 28 0.0000000 0.00000 0.0% 62.5 2s Cutting planes: Clique: 5 Zero half: 15 Explored 321 nodes (35971 simplex iterations) in 3.00 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 20:28:35 2012 Optimize a model with 2764 rows, 1126 columns and 8408 nonzeros Presolve time: 0.01s Presolved: 2764 rows, 1126 columns, 8408 nonzeros Variable types: 0 continuous, 1126 integer (1126 binary) Root relaxation: objective 0.000000e+00, 253 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 0 232 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 327 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 1s 0 0 0.00000 0 310 - 0.00000 - - 2s 0 0 0.00000 0 312 - 0.00000 - - 2s 0 0 0.00000 0 319 - 0.00000 - - 2s 0 0 0.00000 0 319 - 0.00000 - - 3s 0 2 0.00000 0 319 - 0.00000 - - 3s 94 5 0.00000 5 312 - 0.00000 - 193 5s Cutting planes: Clique: 15 Zero half: 34 Explored 210 nodes (55841 simplex iterations) in 6.68 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