current bounds on the number of colors: 0 -- 147 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:08 2012 Optimize a model with 41830 rows, 11302 columns and 135780 nonzeros Presolve time: 0.16s Presolved: 41830 rows, 11302 columns, 135780 nonzeros Variable types: 0 continuous, 11302 integer (11302 binary) Root relaxation: objective 0.000000e+00, 515 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 (860 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 -- 73 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:08 2012 Optimize a model with 20703 rows, 5863 columns and 66960 nonzeros Presolve time: 0.11s Presolved: 20703 rows, 5863 columns, 66960 nonzeros Variable types: 0 continuous, 5863 integer (5863 binary) Root relaxation: objective 0.000000e+00, 463 iterations, 0.02 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 (781 simplex iterations) in 0.15 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 -- 36 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:09 2012 Optimize a model with 10425 rows, 3217 columns and 33480 nonzeros Presolve time: 0.04s Presolved: 10425 rows, 3217 columns, 33480 nonzeros Variable types: 0 continuous, 3217 integer (3217 binary) Root relaxation: objective 0.000000e+00, 300 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 (558 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 -- 18 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:09 2012 Optimize a model with 5286 rows, 1894 columns and 16740 nonzeros Presolve time: 0.02s Presolved: 5286 rows, 1894 columns, 16740 nonzeros Variable types: 0 continuous, 1894 integer (1894 binary) Root relaxation: objective 0.000000e+00, 315 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 (580 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:09 2012 Optimize a model with 2431 rows, 1159 columns and 7440 nonzeros Presolve time: 0.01s Presolved: 2431 rows, 1159 columns, 7440 nonzeros Variable types: 0 continuous, 1159 integer (1159 binary) Root relaxation: objective 0.000000e+00, 334 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 0 266 - 0.00000 - - 0s 0 0 0.00000 0 272 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 268 - 0.00000 - - 0s 0 0 0.00000 0 300 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 0s 0 0 0.00000 0 287 - 0.00000 - - 1s 0 0 0.00000 0 287 - 0.00000 - - 1s 0 2 0.00000 0 287 - 0.00000 - - 1s * 79 0 21 0.0000000 0.00000 0.0% 90.8 1s Cutting planes: Zero half: 9 Explored 80 nodes (23783 simplex iterations) in 1.81 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:11 2012 Optimize a model with 1289 rows, 865 columns and 3720 nonzeros Presolve removed 147 rows and 147 columns Presolve time: 0.00s Presolved: 1142 rows, 718 columns, 3426 nonzeros Variable types: 0 continuous, 718 integer (718 binary) Root relaxation: objective 0.000000e+00, 157 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 0 147 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (628 simplex iterations) in 0.01 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: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:45:11 2012 Optimize a model with 1860 rows, 1012 columns and 5580 nonzeros Presolve time: 0.00s Presolved: 1860 rows, 1012 columns, 5580 nonzeros Variable types: 0 continuous, 1012 integer (1012 binary) Root relaxation: objective 0.000000e+00, 353 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 0 286 - 0.00000 - - 0s 0 0 0.00000 0 286 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 395 - 0.00000 - - 0s 0 0 0.00000 0 375 - 0.00000 - - 0s 0 0 0.00000 0 363 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Clique: 1 Zero half: 316 Explored 0 nodes (11135 simplex iterations) in 1.29 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 4