current bounds on the number of colors: 0 -- 220 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:20 2012 Optimize a model with 26290 rows, 24437 columns and 102410 nonzeros Presolve removed 29 rows and 3190 columns Presolve time: 0.14s Presolved: 26261 rows, 21247 columns, 99220 nonzeros Variable types: 0 continuous, 21247 integer (21247 binary) Root relaxation: objective 0.000000e+00, 363 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 (527 simplex iterations) in 0.18 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:20 2012 Optimize a model with 13255 rows, 12337 columns and 51205 nonzeros Presolve removed 29 rows and 1595 columns Presolve time: 0.13s Presolved: 13226 rows, 10742 columns, 49610 nonzeros Variable types: 0 continuous, 10742 integer (10742 binary) Root relaxation: objective 0.000000e+00, 356 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 (356 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:21 2012 Optimize a model with 6619 rows, 6177 columns and 25137 nonzeros Presolve removed 29 rows and 783 columns Presolve time: 0.04s Presolved: 6590 rows, 5394 columns, 24354 nonzeros Variable types: 0 continuous, 5394 integer (5394 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 simplex iterations) in 0.05 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:21 2012 Optimize a model with 3301 rows, 3097 columns and 12103 nonzeros Presolve removed 29 rows and 377 columns Presolve time: 0.01s Presolved: 3272 rows, 2720 columns, 11726 nonzeros Variable types: 0 continuous, 2720 integer (2720 binary) Root relaxation: objective 0.000000e+00, 377 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 (579 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:21 2012 Optimize a model with 1642 rows, 1557 columns and 5586 nonzeros Presolve removed 29 rows and 174 columns Presolve time: 0.01s Presolved: 1613 rows, 1383 columns, 5412 nonzeros Variable types: 0 continuous, 1383 integer (1383 binary) Root relaxation: objective 0.000000e+00, 332 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 (332 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:21 2012 Optimize a model with 931 rows, 897 columns and 2793 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 902 rows, 810 columns, 2706 nonzeros Variable types: 0 continuous, 810 integer (810 binary) Root relaxation: objective 0.000000e+00, 369 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 (512 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 16:36:21 2012 Optimize a model with 457 rows, 457 columns and 931 nonzeros Presolve removed 457 rows and 457 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 16:36:21 2012 Optimize a model with 694 rows, 677 columns and 1862 nonzeros Presolve removed 228 rows and 261 columns Presolve time: 0.00s Presolved: 466 rows, 416 columns, 1398 nonzeros Variable types: 0 continuous, 416 integer (416 binary) Root relaxation: objective 0.000000e+00, 208 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 0 183 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (717 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