current bounds on the number of colors: 0 -- 219 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:53 2012 Optimize a model with 26924 rows, 24116 columns and 103986 nonzeros Presolve removed 24 rows and 2616 columns Presolve time: 0.14s Presolved: 26900 rows, 21500 columns, 101370 nonzeros Variable types: 0 continuous, 21500 integer (21500 binary) Root relaxation: objective 0.000000e+00, 370 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 (370 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 -- 109 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:53 2012 Optimize a model with 13449 rows, 12071 columns and 51516 nonzeros Presolve removed 24 rows and 1296 columns Presolve time: 0.13s Presolved: 13425 rows, 10775 columns, 50220 nonzeros Variable types: 0 continuous, 10775 integer (10775 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:54 2012 Optimize a model with 6834 rows, 6158 columns and 25758 nonzeros Presolve removed 24 rows and 648 columns Presolve time: 0.04s Presolved: 6810 rows, 5510 columns, 25110 nonzeros Variable types: 0 continuous, 5510 integer (5510 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 simplex iterations) in 0.05 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:54 2012 Optimize a model with 3404 rows, 3092 columns and 12402 nonzeros Presolve removed 24 rows and 312 columns Presolve time: 0.01s Presolved: 3380 rows, 2780 columns, 12090 nonzeros Variable types: 0 continuous, 2780 integer (2780 binary) Root relaxation: objective 0.000000e+00, 375 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 (375 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 16:35:54 2012 Optimize a model with 1689 rows, 1559 columns and 5724 nonzeros Presolve removed 24 rows and 144 columns Presolve time: 0.01s Presolved: 1665 rows, 1415 columns, 5580 nonzeros Variable types: 0 continuous, 1415 integer (1415 binary) Root relaxation: objective 0.000000e+00, 360 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 (360 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 16:35:54 2012 Optimize a model with 954 rows, 902 columns and 2862 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 930 rows, 830 columns, 2790 nonzeros Variable types: 0 continuous, 830 integer (830 binary) Root relaxation: objective 0.000000e+00, 354 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 (354 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 16:35:54 2012 Optimize a model with 464 rows, 464 columns and 954 nonzeros Presolve removed 464 rows and 464 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 16:35:54 2012 Optimize a model with 709 rows, 683 columns and 1908 nonzeros Presolve removed 223 rows and 249 columns Presolve time: 0.00s Presolved: 486 rows, 434 columns, 1458 nonzeros Variable types: 0 continuous, 434 integer (434 binary) Root relaxation: objective 0.000000e+00, 221 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 0 191 - 0.00000 - - 0s Explored 0 nodes (727 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