current bounds on the number of colors: 0 -- 190 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:29 2012 Optimize a model with 17860 rows, 18236 columns and 71060 nonzeros Presolve removed 26 rows and 2470 columns Presolve time: 0.12s Presolved: 17834 rows, 15766 columns, 68590 nonzeros Variable types: 0 continuous, 15766 integer (15766 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:29 2012 Optimize a model with 8932 rows, 9116 columns and 35156 nonzeros Presolve removed 26 rows and 1222 columns Presolve time: 0.08s Presolved: 8906 rows, 7894 columns, 33934 nonzeros Variable types: 0 continuous, 7894 integer (7894 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 simplex iterations) in 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:29 2012 Optimize a model with 4468 rows, 4556 columns and 17204 nonzeros Presolve removed 26 rows and 598 columns Presolve time: 0.03s Presolved: 4442 rows, 3958 columns, 16606 nonzeros Variable types: 0 continuous, 3958 integer (3958 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:29 2012 Optimize a model with 2236 rows, 2276 columns and 8228 nonzeros Presolve removed 26 rows and 286 columns Presolve time: 0.01s Presolved: 2210 rows, 1990 columns, 7942 nonzeros Variable types: 0 continuous, 1990 integer (1990 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:30 2012 Optimize a model with 1120 rows, 1136 columns and 3740 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 1094 rows, 1006 columns, 3610 nonzeros Variable types: 0 continuous, 1006 integer (1006 binary) Root relaxation: objective 0.000000e+00, 275 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 (275 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 16:27:30 2012 Optimize a model with 562 rows, 566 columns and 1496 nonzeros Presolve removed 196 rows and 225 columns Presolve time: 0.00s Presolved: 366 rows, 341 columns, 1098 nonzeros Variable types: 0 continuous, 341 integer (341 binary) Root relaxation: objective 0.000000e+00, 179 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 0 152 - 0.00000 - - 0s Explored 0 nodes (555 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 16:27:30 2012 Optimize a model with 748 rows, 756 columns and 2244 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 722 rows, 678 columns, 2166 nonzeros Variable types: 0 continuous, 678 integer (678 binary) Root relaxation: objective 0.000000e+00, 262 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 (262 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