current bounds on the number of colors: 0 -- 114 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:48 2012 Optimize a model with 37905 rows, 7161 columns and 119871 nonzeros Presolve time: 0.15s Presolved: 37905 rows, 7161 columns, 119871 nonzeros Variable types: 0 continuous, 7161 integer (7161 binary) Root relaxation: objective 0.000000e+00, 292 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 (537 simplex iterations) in 0.25 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:49 2012 Optimize a model with 18678 rows, 3855 columns and 58884 nonzeros Presolve time: 0.08s Presolved: 18678 rows, 3855 columns, 58884 nonzeros Variable types: 0 continuous, 3855 integer (3855 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (518 simplex iterations) in 0.11 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:50 2012 Optimize a model with 9396 rows, 2259 columns and 29442 nonzeros Presolve time: 0.03s Presolved: 9396 rows, 2259 columns, 29442 nonzeros Variable types: 0 continuous, 2259 integer (2259 binary) Root relaxation: objective 0.000000e+00, 240 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 (468 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 20:14:50 2012 Optimize a model with 4755 rows, 1461 columns and 14721 nonzeros Presolve time: 0.01s Presolved: 4755 rows, 1461 columns, 14721 nonzeros Variable types: 0 continuous, 1461 integer (1461 binary) Root relaxation: objective 0.000000e+00, 246 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 (628 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 20:14:50 2012 Optimize a model with 2103 rows, 1005 columns and 6309 nonzeros Presolve time: 0.01s Presolved: 2103 rows, 1005 columns, 6309 nonzeros Variable types: 0 continuous, 1005 integer (1005 binary) Root relaxation: objective 0.000000e+00, 259 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 0 184 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4187 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 20:14:50 2012 Optimize a model with 3429 rows, 1233 columns and 10515 nonzeros Presolve time: 0.01s Presolved: 3429 rows, 1233 columns, 10515 nonzeros Variable types: 0 continuous, 1233 integer (1233 binary) Root relaxation: objective 0.000000e+00, 240 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 0 187 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 1s 0 0 0.00000 0 176 - 0.00000 - - 1s 0 0 0.00000 0 156 - 0.00000 - - 1s 0 0 0.00000 0 263 - 0.00000 - - 1s 0 0 0.00000 0 281 - 0.00000 - - 2s 0 0 0.00000 0 281 - 0.00000 - - 2s 0 2 0.00000 0 281 - 0.00000 - - 2s 604 82 0.00000 6 314 - 0.00000 - 57.6 5s 648 103 infeasible 31 - 0.00000 - 100 10s * 876 2 35 0.0000000 0.00000 0.0% 112 12s Cutting planes: Clique: 2 Explored 877 nodes (122501 simplex iterations) in 12.12 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:15:02 2012 Optimize a model with 2766 rows, 1119 columns and 8412 nonzeros Presolve time: 0.01s Presolved: 2766 rows, 1119 columns, 8412 nonzeros Variable types: 0 continuous, 1119 integer (1119 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 2s 0 0 0.00000 0 336 - 0.00000 - - 2s 0 0 0.00000 0 335 - 0.00000 - - 3s 0 2 0.00000 0 335 - 0.00000 - - 3s Cutting planes: Clique: 12 Zero half: 19 Explored 16 nodes (24842 simplex iterations) in 3.90 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