current bounds on the number of colors: 0 -- 149 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:46:49 2012 Optimize a model with 43439 rows, 11611 columns and 140896 nonzeros Presolve time: 0.15s Presolved: 43439 rows, 11611 columns, 140896 nonzeros Variable types: 0 continuous, 11611 integer (11611 binary) Root relaxation: objective 0.000000e+00, 548 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 (871 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 -- 74 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:46:50 2012 Optimize a model with 21794 rows, 6098 columns and 70448 nonzeros Presolve time: 0.11s Presolved: 21794 rows, 6098 columns, 70448 nonzeros Variable types: 0 continuous, 6098 integer (6098 binary) Root relaxation: objective 0.000000e+00, 469 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 (774 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 -- 37 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:46:50 2012 Optimize a model with 10679 rows, 3267 columns and 34272 nonzeros Presolve time: 0.04s Presolved: 10679 rows, 3267 columns, 34272 nonzeros Variable types: 0 continuous, 3267 integer (3267 binary) Root relaxation: objective 0.000000e+00, 324 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 (591 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 18:46:51 2012 Optimize a model with 5414 rows, 1926 columns and 17136 nonzeros Presolve time: 0.02s Presolved: 5414 rows, 1926 columns, 17136 nonzeros Variable types: 0 continuous, 1926 integer (1926 binary) Root relaxation: objective 0.000000e+00, 309 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 (555 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 18:46:51 2012 Optimize a model with 2489 rows, 1181 columns and 7616 nonzeros Presolve time: 0.01s Presolved: 2489 rows, 1181 columns, 7616 nonzeros Variable types: 0 continuous, 1181 integer (1181 binary) Root relaxation: objective 0.000000e+00, 341 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 0 280 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 258 - 0.00000 - - 0s 0 0 0.00000 0 307 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 1s 0 0 0.00000 0 196 - 0.00000 - - 1s 0 0 0.00000 0 184 - 0.00000 - - 1s 0 0 0.00000 0 174 - 0.00000 - - 1s 0 0 0.00000 0 186 - 0.00000 - - 1s 0 0 0.00000 0 184 - 0.00000 - - 1s 0 0 0.00000 0 182 - 0.00000 - - 1s 0 0 0.00000 0 98 - 0.00000 - - 1s 0 0 0.00000 0 100 - 0.00000 - - 2s 0 0 0.00000 0 98 - 0.00000 - - 2s 0 2 0.00000 0 98 - 0.00000 - - 2s * 191 1 22 0.0000000 0.00000 0.0% 66.2 4s Cutting planes: Zero half: 5 Explored 192 nodes (44284 simplex iterations) in 4.18 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 18:46:55 2012 Optimize a model with 1319 rows, 883 columns and 3808 nonzeros Presolve removed 149 rows and 149 columns Presolve time: 0.00s Presolved: 1170 rows, 734 columns, 3510 nonzeros Variable types: 0 continuous, 734 integer (734 binary) Root relaxation: objective 0.000000e+00, 161 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 0 149 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (660 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 18:46:55 2012 Optimize a model with 1904 rows, 1032 columns and 5712 nonzeros Presolve time: 0.00s Presolved: 1904 rows, 1032 columns, 5712 nonzeros Variable types: 0 continuous, 1032 integer (1032 binary) Root relaxation: objective 0.000000e+00, 359 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 0 292 - 0.00000 - - 0s 0 0 0.00000 0 299 - 0.00000 - - 0s 0 0 0.00000 0 406 - 0.00000 - - 0s 0 0 0.00000 0 408 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 1s 0 0 0.00000 0 405 - 0.00000 - - 1s 0 0 0.00000 0 400 - 0.00000 - - 1s 0 0 0.00000 0 408 - 0.00000 - - 1s 0 0 0.00000 0 411 - 0.00000 - - 2s 0 0 0.00000 0 410 - 0.00000 - - 2s 0 2 0.00000 0 404 - 0.00000 - - 2s Cutting planes: Zero half: 17 Explored 3 nodes (18745 simplex iterations) in 2.62 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 4