current bounds on the number of colors: 0 -- 228 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:07 2012 Optimize a model with 33288 rows, 26282 columns and 125172 nonzeros Presolve removed 17 rows and 1938 columns Presolve time: 0.16s Presolved: 33271 rows, 24344 columns, 123234 nonzeros Variable types: 0 continuous, 24344 integer (24344 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 simplex iterations) in 0.19 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 -- 114 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:07 2012 Optimize a model with 16758 rows, 13286 columns and 62586 nonzeros Presolve removed 17 rows and 969 columns Presolve time: 0.12s Presolved: 16741 rows, 12317 columns, 61617 nonzeros Variable types: 0 continuous, 12317 integer (12317 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:08 2012 Optimize a model with 8348 rows, 6674 columns and 30744 nonzeros Presolve removed 17 rows and 476 columns Presolve time: 0.05s Presolved: 8331 rows, 6198 columns, 30268 nonzeros Variable types: 0 continuous, 6198 integer (6198 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:08 2012 Optimize a model with 4288 rows, 3482 columns and 15372 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4271 rows, 3244 columns, 15134 nonzeros Variable types: 0 continuous, 3244 integer (3244 binary) Root relaxation: objective 0.000000e+00, 408 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 (626 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:08 2012 Optimize a model with 2258 rows, 1886 columns and 7686 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2241 rows, 1767 columns, 7567 nonzeros Variable types: 0 continuous, 1767 integer (1767 binary) Root relaxation: objective 0.000000e+00, 436 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 (654 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:08 2012 Optimize a model with 1098 rows, 974 columns and 3294 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1081 rows, 923 columns, 3243 nonzeros Variable types: 0 continuous, 923 integer (923 binary) Root relaxation: objective 0.000000e+00, 462 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 (800 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 16:39:08 2012 Optimize a model with 518 rows, 518 columns and 1098 nonzeros Presolve removed 518 rows and 518 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 16:39:08 2012 Optimize a model with 808 rows, 746 columns and 2196 nonzeros Presolve removed 232 rows and 251 columns Presolve time: 0.00s Presolved: 576 rows, 495 columns, 1728 nonzeros Variable types: 0 continuous, 495 integer (495 binary) Root relaxation: objective 0.000000e+00, 235 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 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (734 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