current bounds on the number of colors: 0 -- 186 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:28 2012 Optimize a model with 18507 rows, 17495 columns and 72261 nonzeros Presolve removed 19 rows and 1767 columns Presolve time: 0.12s Presolved: 18488 rows, 15728 columns, 70494 nonzeros Variable types: 0 continuous, 15728 integer (15728 binary) Root relaxation: objective 0.000000e+00, 312 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 (474 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:29 2012 Optimize a model with 9248 rows, 8753 columns and 35742 nonzeros Presolve removed 19 rows and 874 columns Presolve time: 0.08s Presolved: 9229 rows, 7879 columns, 34868 nonzeros Variable types: 0 continuous, 7879 integer (7879 binary) Root relaxation: objective 0.000000e+00, 311 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 (461 simplex iterations) in 0.10 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:29 2012 Optimize a model with 4717 rows, 4475 columns and 17871 nonzeros Presolve removed 19 rows and 437 columns Presolve time: 0.03s Presolved: 4698 rows, 4038 columns, 17434 nonzeros Variable types: 0 continuous, 4038 integer (4038 binary) Root relaxation: objective 0.000000e+00, 310 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 (461 simplex iterations) in 0.04 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 16:26:29 2012 Optimize a model with 2353 rows, 2243 columns and 8547 nonzeros Presolve removed 19 rows and 209 columns Presolve time: 0.01s Presolved: 2334 rows, 2034 columns, 8338 nonzeros Variable types: 0 continuous, 2034 integer (2034 binary) Root relaxation: objective 0.000000e+00, 311 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 (453 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:29 2012 Optimize a model with 1171 rows, 1127 columns and 3885 nonzeros Presolve removed 19 rows and 95 columns Presolve time: 0.00s Presolved: 1152 rows, 1032 columns, 3790 nonzeros Variable types: 0 continuous, 1032 integer (1032 binary) Root relaxation: objective 0.000000e+00, 276 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 (276 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 16:26:29 2012 Optimize a model with 580 rows, 569 columns and 1554 nonzeros Presolve removed 192 rows and 214 columns Presolve time: 0.00s Presolved: 388 rows, 355 columns, 1164 nonzeros Variable types: 0 continuous, 355 integer (355 binary) Root relaxation: objective 0.000000e+00, 182 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 0 161 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (609 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 16:26:29 2012 Optimize a model with 777 rows, 755 columns and 2331 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 758 rows, 698 columns, 2274 nonzeros Variable types: 0 continuous, 698 integer (698 binary) Root relaxation: objective 0.000000e+00, 292 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 (409 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% optimal solution found: number of colors: 3