current bounds on the number of colors: 0 -- 183 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:55 2012 Optimize a model with 18019 rows, 16849 columns and 70161 nonzeros Presolve removed 17 rows and 1547 columns Presolve time: 0.13s Presolved: 18002 rows, 15302 columns, 68614 nonzeros Variable types: 0 continuous, 15302 integer (15302 binary) Root relaxation: objective 0.000000e+00, 296 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 (296 simplex iterations) in 0.15 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:56 2012 Optimize a model with 9003 rows, 8431 columns and 34695 nonzeros Presolve removed 17 rows and 765 columns Presolve time: 0.08s Presolved: 8986 rows, 7666 columns, 33930 nonzeros Variable types: 0 continuous, 7666 integer (7666 binary) Root relaxation: objective 0.000000e+00, 298 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 (298 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:56 2012 Optimize a model with 4495 rows, 4222 columns and 16962 nonzeros Presolve removed 17 rows and 374 columns Presolve time: 0.03s Presolved: 4478 rows, 3848 columns, 16588 nonzeros Variable types: 0 continuous, 3848 integer (3848 binary) Root relaxation: objective 0.000000e+00, 299 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 (299 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:56 2012 Optimize a model with 2339 rows, 2209 columns and 8481 nonzeros Presolve removed 17 rows and 187 columns Presolve time: 0.01s Presolved: 2322 rows, 2022 columns, 8294 nonzeros Variable types: 0 continuous, 2022 integer (2022 binary) Root relaxation: objective 0.000000e+00, 309 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 (309 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 16:25:56 2012 Optimize a model with 1163 rows, 1111 columns and 3855 nonzeros Presolve removed 17 rows and 85 columns Presolve time: 0.00s Presolved: 1146 rows, 1026 columns, 3770 nonzeros Variable types: 0 continuous, 1026 integer (1026 binary) Root relaxation: objective 0.000000e+00, 277 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 (381 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 16:25:56 2012 Optimize a model with 575 rows, 562 columns and 1542 nonzeros Presolve removed 193 rows and 215 columns Presolve time: 0.00s Presolved: 382 rows, 347 columns, 1146 nonzeros Variable types: 0 continuous, 347 integer (347 binary) Root relaxation: objective 0.000000e+00, 181 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 0 153 - 0.00000 - - 0s Explored 0 nodes (554 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 16:25:56 2012 Optimize a model with 771 rows, 745 columns and 2313 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 754 rows, 694 columns, 2262 nonzeros Variable types: 0 continuous, 694 integer (694 binary) Root relaxation: objective 0.000000e+00, 298 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 (298 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