current bounds on the number of colors: 0 -- 130 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 5850 rows, 8538 columns and 25610 nonzeros Presolve removed 34 rows and 2210 columns Presolve time: 0.07s Presolved: 5816 rows, 6328 columns, 23400 nonzeros Variable types: 0 continuous, 6328 integer (6328 binary) Root relaxation: objective 0.000000e+00, 162 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 (162 simplex iterations) in 0.08 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 -- 65 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 2946 rows, 4248 columns and 12608 nonzeros Presolve removed 34 rows and 1088 columns Presolve time: 0.02s Presolved: 2912 rows, 3160 columns, 11520 nonzeros Variable types: 0 continuous, 3160 integer (3160 binary) Root relaxation: objective 0.000000e+00, 161 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 (161 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 -- 32 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 1538 rows, 2168 columns and 6304 nonzeros Presolve removed 34 rows and 544 columns Presolve time: 0.01s Presolved: 1504 rows, 1624 columns, 5760 nonzeros Variable types: 0 continuous, 1624 integer (1624 binary) Root relaxation: objective 0.000000e+00, 162 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 (162 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 834 rows, 1128 columns and 3152 nonzeros Presolve removed 34 rows and 272 columns Presolve time: 0.00s Presolved: 800 rows, 856 columns, 2880 nonzeros Variable types: 0 continuous, 856 integer (856 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 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% current bounds on the number of colors: 0 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 482 rows, 608 columns and 1576 nonzeros Presolve removed 34 rows and 136 columns Presolve time: 0.00s Presolved: 448 rows, 472 columns, 1440 nonzeros Variable types: 0 continuous, 472 integer (472 binary) Root relaxation: objective 0.000000e+00, 148 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 (148 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% current bounds on the number of colors: 0 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 306 rows, 348 columns and 788 nonzeros Presolve removed 142 rows and 182 columns Presolve time: 0.00s Presolved: 164 rows, 166 columns, 492 nonzeros Variable types: 0 continuous, 166 integer (166 binary) Root relaxation: objective 0.000000e+00, 87 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 64 - 0.00000 - - 0s Explored 0 nodes (275 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:27 2012 Optimize a model with 394 rows, 478 columns and 1182 nonzeros Presolve removed 34 rows and 102 columns Presolve time: 0.00s Presolved: 360 rows, 376 columns, 1080 nonzeros Variable types: 0 continuous, 376 integer (376 binary) Root relaxation: objective 0.000000e+00, 138 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 (138 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