current bounds on the number of colors: 0 -- 170 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:07 2012 Optimize a model with 14280 rows, 14616 columns and 56780 nonzeros Presolve removed 18 rows and 1530 columns Presolve time: 0.11s Presolved: 14262 rows, 13086 columns, 55250 nonzeros Variable types: 0 continuous, 13086 integer (13086 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 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 -- 85 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:07 2012 Optimize a model with 7142 rows, 7306 columns and 28056 nonzeros Presolve removed 18 rows and 756 columns Presolve time: 0.06s Presolved: 7124 rows, 6550 columns, 27300 nonzeros Variable types: 0 continuous, 6550 integer (6550 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:07 2012 Optimize a model with 3656 rows, 3736 columns and 14028 nonzeros Presolve removed 18 rows and 378 columns Presolve time: 0.02s Presolved: 3638 rows, 3358 columns, 13650 nonzeros Variable types: 0 continuous, 3358 integer (3358 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:07 2012 Optimize a model with 1830 rows, 1866 columns and 6680 nonzeros Presolve removed 18 rows and 180 columns Presolve time: 0.01s Presolved: 1812 rows, 1686 columns, 6500 nonzeros Variable types: 0 continuous, 1686 integer (1686 binary) Root relaxation: objective 0.000000e+00, 260 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 (260 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:07 2012 Optimize a model with 1000 rows, 1016 columns and 3340 nonzeros Presolve removed 18 rows and 90 columns Presolve time: 0.00s Presolved: 982 rows, 926 columns, 3250 nonzeros Variable types: 0 continuous, 926 integer (926 binary) Root relaxation: objective 0.000000e+00, 265 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 (265 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:08 2012 Optimize a model with 502 rows, 506 columns and 1336 nonzeros Presolve removed 174 rows and 194 columns Presolve time: 0.00s Presolved: 328 rows, 312 columns, 984 nonzeros Variable types: 0 continuous, 312 integer (312 binary) Root relaxation: objective 0.000000e+00, 175 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 0 148 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (531 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:08 2012 Optimize a model with 668 rows, 676 columns and 2004 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 650 rows, 622 columns, 1950 nonzeros Variable types: 0 continuous, 622 integer (622 binary) Root relaxation: objective 0.000000e+00, 261 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 (261 simplex iterations) in 0.00 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% optimal solution found: number of colors: 3