current bounds on the number of colors: 0 -- 240 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:07 2012 Optimize a model with 34200 rows, 29083 columns and 130680 nonzeros Presolve removed 22 rows and 2640 columns Presolve time: 0.15s Presolved: 34178 rows, 26443 columns, 128040 nonzeros Variable types: 0 continuous, 26443 integer (26443 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:08 2012 Optimize a model with 17220 rows, 14683 columns and 65340 nonzeros Presolve removed 22 rows and 1320 columns Presolve time: 0.12s Presolved: 17198 rows, 13363 columns, 64020 nonzeros Variable types: 0 continuous, 13363 integer (13363 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:08 2012 Optimize a model with 8730 rows, 7483 columns and 32670 nonzeros Presolve removed 22 rows and 660 columns Presolve time: 0.06s Presolved: 8708 rows, 6823 columns, 32010 nonzeros Variable types: 0 continuous, 6823 integer (6823 binary) Root relaxation: objective 0.000000e+00, 439 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 (439 simplex iterations) in 0.07 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 Sat Dec 15 16:44:09 2012 Optimize a model with 4485 rows, 3883 columns and 16335 nonzeros Presolve removed 22 rows and 330 columns Presolve time: 0.02s Presolved: 4463 rows, 3553 columns, 16005 nonzeros Variable types: 0 continuous, 3553 integer (3553 binary) Root relaxation: objective 0.000000e+00, 448 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 (711 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:09 2012 Optimize a model with 2221 rows, 1963 columns and 7623 nonzeros Presolve removed 22 rows and 154 columns Presolve time: 0.01s Presolved: 2199 rows, 1809 columns, 7469 nonzeros Variable types: 0 continuous, 1809 integer (1809 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 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 16:44:09 2012 Optimize a model with 1089 rows, 1003 columns and 3267 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 1067 rows, 937 columns, 3201 nonzeros Variable types: 0 continuous, 937 integer (937 binary) Root relaxation: objective 0.000000e+00, 425 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 (425 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 16:44:09 2012 Optimize a model with 523 rows, 523 columns and 1089 nonzeros Presolve removed 523 rows and 523 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 16:44:09 2012 Optimize a model with 806 rows, 763 columns and 2178 nonzeros Presolve removed 244 rows and 268 columns Presolve time: 0.00s Presolved: 562 rows, 495 columns, 1686 nonzeros Variable types: 0 continuous, 495 integer (495 binary) Root relaxation: objective 0.000000e+00, 244 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 (781 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