current bounds on the number of colors: 0 -- 132 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:41 2012 Optimize a model with 5544 rows, 8794 columns and 24948 nonzeros Presolve removed 38 rows and 2508 columns Presolve time: 0.07s Presolved: 5506 rows, 6286 columns, 22440 nonzeros Variable types: 0 continuous, 6286 integer (6286 binary) Root relaxation: objective 0.000000e+00, 167 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 (167 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 -- 66 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:41 2012 Optimize a model with 2838 rows, 4438 columns and 12474 nonzeros Presolve removed 38 rows and 1254 columns Presolve time: 0.02s Presolved: 2800 rows, 3184 columns, 11220 nonzeros Variable types: 0 continuous, 3184 integer (3184 binary) Root relaxation: objective 0.000000e+00, 166 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 (166 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 -- 33 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:41 2012 Optimize a model with 1444 rows, 2194 columns and 6048 nonzeros Presolve removed 38 rows and 608 columns Presolve time: 0.01s Presolved: 1406 rows, 1586 columns, 5440 nonzeros Variable types: 0 continuous, 1586 integer (1586 binary) Root relaxation: objective 0.000000e+00, 170 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 (170 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 16:17:41 2012 Optimize a model with 788 rows, 1138 columns and 3024 nonzeros Presolve removed 38 rows and 304 columns Presolve time: 0.00s Presolved: 750 rows, 834 columns, 2720 nonzeros Variable types: 0 continuous, 834 integer (834 binary) Root relaxation: objective 0.000000e+00, 160 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 (226 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:41 2012 Optimize a model with 460 rows, 610 columns and 1512 nonzeros Presolve removed 38 rows and 152 columns Presolve time: 0.00s Presolved: 422 rows, 458 columns, 1360 nonzeros Variable types: 0 continuous, 458 integer (458 binary) Root relaxation: objective 0.000000e+00, 134 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 (134 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 16:17:41 2012 Optimize a model with 296 rows, 346 columns and 756 nonzeros Presolve removed 148 rows and 194 columns Presolve time: 0.00s Presolved: 148 rows, 152 columns, 444 nonzeros Variable types: 0 continuous, 152 integer (152 binary) Root relaxation: objective 0.000000e+00, 73 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 22 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (198 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 16:17:41 2012 Optimize a model with 378 rows, 478 columns and 1134 nonzeros Presolve removed 38 rows and 114 columns Presolve time: 0.00s Presolved: 340 rows, 364 columns, 1020 nonzeros Variable types: 0 continuous, 364 integer (364 binary) Root relaxation: objective 0.000000e+00, 144 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 (144 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