current bounds on the number of colors: 0 -- 164 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:07 2012 Optimize a model with 11726 rows, 13589 columns and 48134 nonzeros Presolve removed 24 rows and 1968 columns Presolve time: 0.12s Presolved: 11702 rows, 11621 columns, 46166 nonzeros Variable types: 0 continuous, 11621 integer (11621 binary) Root relaxation: objective 0.000000e+00, 246 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 (246 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 -- 82 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:08 2012 Optimize a model with 5945 rows, 6865 columns and 24067 nonzeros Presolve removed 24 rows and 984 columns Presolve time: 0.05s Presolved: 5921 rows, 5881 columns, 23083 nonzeros Variable types: 0 continuous, 5881 integer (5881 binary) Root relaxation: objective 0.000000e+00, 245 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 (245 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:08 2012 Optimize a model with 2984 rows, 3421 columns and 11740 nonzeros Presolve removed 24 rows and 480 columns Presolve time: 0.02s Presolved: 2960 rows, 2941 columns, 11260 nonzeros Variable types: 0 continuous, 2941 integer (2941 binary) Root relaxation: objective 0.000000e+00, 245 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 (245 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:08 2012 Optimize a model with 1574 rows, 1781 columns and 5870 nonzeros Presolve removed 24 rows and 240 columns Presolve time: 0.01s Presolved: 1550 rows, 1541 columns, 5630 nonzeros Variable types: 0 continuous, 1541 integer (1541 binary) Root relaxation: objective 0.000000e+00, 246 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 0.01 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 16:22:08 2012 Optimize a model with 869 rows, 961 columns and 2935 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 845 rows, 841 columns, 2815 nonzeros Variable types: 0 continuous, 841 integer (841 binary) Root relaxation: objective 0.000000e+00, 234 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 (329 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 16:22:08 2012 Optimize a model with 446 rows, 469 columns and 1174 nonzeros Presolve removed 172 rows and 200 columns Presolve time: 0.00s Presolved: 274 rows, 269 columns, 822 nonzeros Variable types: 0 continuous, 269 integer (269 binary) Root relaxation: objective 0.000000e+00, 140 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 0 110 - 0.00000 - - 0s Explored 0 nodes (400 simplex iterations) in 0.00 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 16:22:08 2012 Optimize a model with 587 rows, 633 columns and 1761 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 563 rows, 561 columns, 1689 nonzeros Variable types: 0 continuous, 561 integer (561 binary) Root relaxation: objective 0.000000e+00, 230 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 (230 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