current bounds on the number of colors: 0 -- 228 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:09 2012 Optimize a model with 29982 rows, 26253 columns and 115254 nonzeros Presolve removed 23 rows and 2622 columns Presolve time: 0.15s Presolved: 29959 rows, 23631 columns, 112632 nonzeros Variable types: 0 continuous, 23631 integer (23631 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 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 -- 114 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:09 2012 Optimize a model with 15105 rows, 13257 columns and 57627 nonzeros Presolve removed 23 rows and 1311 columns Presolve time: 0.12s Presolved: 15082 rows, 11946 columns, 56316 nonzeros Variable types: 0 continuous, 11946 integer (11946 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:10 2012 Optimize a model with 7536 rows, 6645 columns and 28308 nonzeros Presolve removed 23 rows and 644 columns Presolve time: 0.05s Presolved: 7513 rows, 6001 columns, 27664 nonzeros Variable types: 0 continuous, 6001 integer (6001 binary) Root relaxation: objective 0.000000e+00, 397 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 (397 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:10 2012 Optimize a model with 3882 rows, 3453 columns and 14154 nonzeros Presolve removed 23 rows and 322 columns Presolve time: 0.02s Presolved: 3859 rows, 3131 columns, 13832 nonzeros Variable types: 0 continuous, 3131 integer (3131 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:10 2012 Optimize a model with 2055 rows, 1857 columns and 7077 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2032 rows, 1696 columns, 6916 nonzeros Variable types: 0 continuous, 1696 integer (1696 binary) Root relaxation: objective 0.000000e+00, 374 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 (374 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 16:39:10 2012 Optimize a model with 1011 rows, 945 columns and 3033 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 988 rows, 876 columns, 2964 nonzeros Variable types: 0 continuous, 876 integer (876 binary) Root relaxation: objective 0.000000e+00, 378 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 (378 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 16:39:10 2012 Optimize a model with 489 rows, 489 columns and 1011 nonzeros Presolve removed 489 rows and 489 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 16:39:10 2012 Optimize a model with 750 rows, 717 columns and 2022 nonzeros Presolve removed 240 rows and 269 columns Presolve time: 0.00s Presolved: 510 rows, 448 columns, 1530 nonzeros Variable types: 0 continuous, 448 integer (448 binary) Root relaxation: objective 0.000000e+00, 219 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 0 193 - 0.00000 - - 0s Explored 0 nodes (759 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