current bounds on the number of colors: 0 -- 210 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:57 2012 Optimize a model with 26880 rows, 22304 columns and 102060 nonzeros Presolve removed 23 rows and 2415 columns Presolve time: 0.14s Presolved: 26857 rows, 19889 columns, 99645 nonzeros Variable types: 0 continuous, 19889 integer (19889 binary) Root relaxation: objective 0.000000e+00, 382 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 (382 simplex iterations) in 0.16 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:57 2012 Optimize a model with 13418 rows, 11174 columns and 50544 nonzeros Presolve removed 23 rows and 1196 columns Presolve time: 0.12s Presolved: 13395 rows, 9978 columns, 49348 nonzeros Variable types: 0 continuous, 9978 integer (9978 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:58 2012 Optimize a model with 6814 rows, 5714 columns and 25272 nonzeros Presolve removed 23 rows and 598 columns Presolve time: 0.04s Presolved: 6791 rows, 5116 columns, 24674 nonzeros Variable types: 0 continuous, 5116 integer (5116 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:58 2012 Optimize a model with 3512 rows, 2984 columns and 12636 nonzeros Presolve removed 23 rows and 299 columns Presolve time: 0.01s Presolved: 3489 rows, 2685 columns, 12337 nonzeros Variable types: 0 continuous, 2685 integer (2685 binary) Root relaxation: objective 0.000000e+00, 365 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 (566 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 16:32:58 2012 Optimize a model with 1734 rows, 1514 columns and 5832 nonzeros Presolve removed 23 rows and 138 columns Presolve time: 0.01s Presolved: 1711 rows, 1376 columns, 5694 nonzeros Variable types: 0 continuous, 1376 integer (1376 binary) Root relaxation: objective 0.000000e+00, 349 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 (516 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 16:32:58 2012 Optimize a model with 972 rows, 884 columns and 2916 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 949 rows, 815 columns, 2847 nonzeros Variable types: 0 continuous, 815 integer (815 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 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 16:32:58 2012 Optimize a model with 464 rows, 464 columns and 972 nonzeros Presolve removed 464 rows and 464 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 16:32:58 2012 Optimize a model with 718 rows, 674 columns and 1944 nonzeros Presolve removed 212 rows and 236 columns Presolve time: 0.00s Presolved: 506 rows, 438 columns, 1518 nonzeros Variable types: 0 continuous, 438 integer (438 binary) Root relaxation: objective 0.000000e+00, 211 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 0 185 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (713 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