current bounds on the number of colors: 0 -- 237 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:56 2012 Optimize a model with 34693 rows, 28258 columns and 131334 nonzeros Presolve removed 23 rows and 2714 columns Presolve time: 0.17s Presolved: 34670 rows, 25544 columns, 128620 nonzeros Variable types: 0 continuous, 25544 integer (25544 binary) Root relaxation: objective 0.000000e+00, 394 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 (394 simplex iterations) in 0.20 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 -- 118 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:57 2012 Optimize a model with 17465 rows, 14275 columns and 65667 nonzeros Presolve removed 23 rows and 1357 columns Presolve time: 0.12s Presolved: 17442 rows, 12918 columns, 64310 nonzeros Variable types: 0 continuous, 12918 integer (12918 binary) Root relaxation: objective 0.000000e+00, 394 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 (394 simplex iterations) in 0.14 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:57 2012 Optimize a model with 8705 rows, 7165 columns and 32277 nonzeros Presolve removed 23 rows and 667 columns Presolve time: 0.05s Presolved: 8682 rows, 6498 columns, 31610 nonzeros Variable types: 0 continuous, 6498 integer (6498 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:57 2012 Optimize a model with 4325 rows, 3610 columns and 15582 nonzeros Presolve removed 23 rows and 322 columns Presolve time: 0.02s Presolved: 4302 rows, 3288 columns, 15260 nonzeros Variable types: 0 continuous, 3288 integer (3288 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 simplex iterations) in 0.02 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 Sat Dec 15 16:42:57 2012 Optimize a model with 2281 rows, 1951 columns and 7791 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2258 rows, 1790 columns, 7630 nonzeros Variable types: 0 continuous, 1790 integer (1790 binary) Root relaxation: objective 0.000000e+00, 417 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 (417 simplex iterations) in 0.01 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 Sat Dec 15 16:42:57 2012 Optimize a model with 1113 rows, 1003 columns and 3339 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1090 rows, 934 columns, 3270 nonzeros Variable types: 0 continuous, 934 integer (934 binary) Root relaxation: objective 0.000000e+00, 444 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 (640 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:58 2012 Optimize a model with 529 rows, 529 columns and 1113 nonzeros Presolve removed 529 rows and 529 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:58 2012 Optimize a model with 821 rows, 766 columns and 2226 nonzeros Presolve removed 243 rows and 269 columns Presolve time: 0.00s Presolved: 578 rows, 497 columns, 1734 nonzeros Variable types: 0 continuous, 497 integer (497 binary) Root relaxation: objective 0.000000e+00, 236 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 0 205 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (809 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 - optimal solution found: number of colors: 3