current bounds on the number of colors: 0 -- 235 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:57 2012 Optimize a model with 35452 rows, 27796 columns and 133146 nonzeros Presolve removed 20 rows and 2340 columns Presolve time: 0.17s Presolved: 35432 rows, 25456 columns, 130806 nonzeros Variable types: 0 continuous, 25456 integer (25456 binary) Root relaxation: objective 0.000000e+00, 424 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 (424 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:58 2012 Optimize a model with 17693 rows, 13931 columns and 66004 nonzeros Presolve removed 20 rows and 1160 columns Presolve time: 0.12s Presolved: 17673 rows, 12771 columns, 64844 nonzeros Variable types: 0 continuous, 12771 integer (12771 binary) Root relaxation: objective 0.000000e+00, 421 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 (421 simplex iterations) in 0.14 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:58 2012 Optimize a model with 8964 rows, 7116 columns and 33002 nonzeros Presolve removed 20 rows and 580 columns Presolve time: 0.05s Presolved: 8944 rows, 6536 columns, 32422 nonzeros Variable types: 0 continuous, 6536 integer (6536 binary) Root relaxation: objective 0.000000e+00, 419 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 (419 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:58 2012 Optimize a model with 4449 rows, 3591 columns and 15932 nonzeros Presolve removed 20 rows and 280 columns Presolve time: 0.02s Presolved: 4429 rows, 3311 columns, 15652 nonzeros Variable types: 0 continuous, 3311 integer (3311 binary) Root relaxation: objective 0.000000e+00, 441 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 (680 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:58 2012 Optimize a model with 2342 rows, 1946 columns and 7966 nonzeros Presolve removed 20 rows and 140 columns Presolve time: 0.01s Presolved: 2322 rows, 1806 columns, 7826 nonzeros Variable types: 0 continuous, 1806 integer (1806 binary) Root relaxation: objective 0.000000e+00, 419 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 (607 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:58 2012 Optimize a model with 1138 rows, 1006 columns and 3414 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 1118 rows, 946 columns, 3354 nonzeros Variable types: 0 continuous, 946 integer (946 binary) Root relaxation: objective 0.000000e+00, 424 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 (784 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 16:41:58 2012 Optimize a model with 536 rows, 536 columns and 1138 nonzeros Presolve removed 536 rows and 536 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 16:41:58 2012 Optimize a model with 837 rows, 771 columns and 2276 nonzeros Presolve removed 239 rows and 261 columns Presolve time: 0.00s Presolved: 598 rows, 510 columns, 1794 nonzeros Variable types: 0 continuous, 510 integer (510 binary) Root relaxation: objective 0.000000e+00, 233 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 0 208 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (799 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