current bounds on the number of colors: 0 -- 120 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:02:42 2012 Optimize a model with 43020 rows, 7915 columns and 135900 nonzeros Presolve time: 0.16s Presolved: 43020 rows, 7915 columns, 135900 nonzeros Variable types: 0 continuous, 7915 integer (7915 binary) Root relaxation: objective 0.000000e+00, 306 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 (566 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 -- 60 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:02:43 2012 Optimize a model with 21570 rows, 4315 columns and 67950 nonzeros Presolve time: 0.09s Presolved: 21570 rows, 4315 columns, 67950 nonzeros Variable types: 0 continuous, 4315 integer (4315 binary) Root relaxation: objective 0.000000e+00, 293 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 (551 simplex iterations) in 0.13 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 21:02:43 2012 Optimize a model with 10845 rows, 2515 columns and 33975 nonzeros Presolve time: 0.04s Presolved: 10845 rows, 2515 columns, 33975 nonzeros Variable types: 0 continuous, 2515 integer (2515 binary) Root relaxation: objective 0.000000e+00, 243 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 (478 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 21:02:44 2012 Optimize a model with 5125 rows, 1555 columns and 15855 nonzeros Presolve time: 0.01s Presolved: 5125 rows, 1555 columns, 15855 nonzeros Variable types: 0 continuous, 1555 integer (1555 binary) Root relaxation: objective 0.000000e+00, 263 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 (724 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 21:02:44 2012 Optimize a model with 2265 rows, 1075 columns and 6795 nonzeros Presolve time: 0.01s Presolved: 2265 rows, 1075 columns, 6795 nonzeros Variable types: 0 continuous, 1075 integer (1075 binary) Root relaxation: objective 0.000000e+00, 268 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3572 simplex iterations) in 0.38 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 21:02:44 2012 Optimize a model with 3695 rows, 1315 columns and 11325 nonzeros Presolve time: 0.01s Presolved: 3695 rows, 1315 columns, 11325 nonzeros Variable types: 0 continuous, 1315 integer (1315 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 0 122 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 0.00000 0 167 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 211 - 0.00000 - - 1s 0 0 0.00000 0 206 - 0.00000 - - 1s 0 0 0.00000 0 222 - 0.00000 - - 1s 0 0 0.00000 0 246 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 2 0.00000 0 306 - 0.00000 - - 3s 374 46 0.00000 21 178 - 0.00000 - 88.1 5s 809 69 0.00000 3 212 - 0.00000 - 76.1 10s * 1059 2 39 0.0000000 0.00000 0.0% 116 14s Cutting planes: Clique: 3 Zero half: 9 Explored 1060 nodes (149589 simplex iterations) in 14.49 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 21:02:59 2012 Optimize a model with 2980 rows, 1195 columns and 9060 nonzeros Presolve time: 0.01s Presolved: 2980 rows, 1195 columns, 9060 nonzeros Variable types: 0 continuous, 1195 integer (1195 binary) Root relaxation: objective 0.000000e+00, 275 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 333 - 0.00000 - - 0s 0 0 0.00000 0 345 - 0.00000 - - 1s 0 0 0.00000 0 322 - 0.00000 - - 2s 0 0 0.00000 0 329 - 0.00000 - - 2s 0 0 0.00000 0 315 - 0.00000 - - 3s 0 0 0.00000 0 327 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 2 0.00000 0 334 - 0.00000 - - 5s Cutting planes: Clique: 16 Zero half: 23 Explored 91 nodes (44735 simplex iterations) in 6.78 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