current bounds on the number of colors: 0 -- 209 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:33 2012 Optimize a model with 22569 rows, 21951 columns and 88816 nonzeros Presolve removed 25 rows and 2600 columns Presolve time: 0.14s Presolved: 22544 rows, 19351 columns, 86216 nonzeros Variable types: 0 continuous, 19351 integer (19351 binary) Root relaxation: objective 0.000000e+00, 343 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 (343 simplex iterations) in 0.16 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:33 2012 Optimize a model with 11389 rows, 11083 columns and 44408 nonzeros Presolve removed 25 rows and 1300 columns Presolve time: 0.11s Presolved: 11364 rows, 9783 columns, 43108 nonzeros Variable types: 0 continuous, 9783 integer (9783 binary) Root relaxation: objective 0.000000e+00, 342 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 (342 simplex iterations) in 0.12 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:33 2012 Optimize a model with 5799 rows, 5649 columns and 22204 nonzeros Presolve removed 25 rows and 650 columns Presolve time: 0.04s Presolved: 5774 rows, 4999 columns, 21554 nonzeros Variable types: 0 continuous, 4999 integer (4999 binary) Root relaxation: objective 0.000000e+00, 340 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 (340 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:34 2012 Optimize a model with 3004 rows, 2932 columns and 11102 nonzeros Presolve removed 25 rows and 325 columns Presolve time: 0.01s Presolved: 2979 rows, 2607 columns, 10777 nonzeros Variable types: 0 continuous, 2607 integer (2607 binary) Root relaxation: objective 0.000000e+00, 344 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 (520 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:34 2012 Optimize a model with 1499 rows, 1469 columns and 5124 nonzeros Presolve removed 25 rows and 150 columns Presolve time: 0.01s Presolved: 1474 rows, 1319 columns, 4974 nonzeros Variable types: 0 continuous, 1319 integer (1319 binary) Root relaxation: objective 0.000000e+00, 333 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 (333 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:34 2012 Optimize a model with 854 rows, 842 columns and 2562 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 829 rows, 767 columns, 2487 nonzeros Variable types: 0 continuous, 767 integer (767 binary) Root relaxation: objective 0.000000e+00, 320 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 (320 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:34 2012 Optimize a model with 424 rows, 424 columns and 854 nonzeros Presolve removed 424 rows and 424 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 16:32:34 2012 Optimize a model with 639 rows, 633 columns and 1708 nonzeros Presolve removed 213 rows and 240 columns Presolve time: 0.00s Presolved: 426 rows, 393 columns, 1278 nonzeros Variable types: 0 continuous, 393 integer (393 binary) Root relaxation: objective 0.000000e+00, 204 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 0 171 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (632 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