current bounds on the number of colors: 0 -- 188 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:03 2012 Optimize a model with 18330 rows, 17865 columns and 72098 nonzeros Presolve removed 20 rows and 1880 columns Presolve time: 0.12s Presolved: 18310 rows, 15985 columns, 70218 nonzeros Variable types: 0 continuous, 15985 integer (15985 binary) Root relaxation: objective 0.000000e+00, 304 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 (304 simplex iterations) in 0.13 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:03 2012 Optimize a model with 9259 rows, 9029 columns and 36049 nonzeros Presolve removed 20 rows and 940 columns Presolve time: 0.08s Presolved: 9239 rows, 8089 columns, 35109 nonzeros Variable types: 0 continuous, 8089 integer (8089 binary) Root relaxation: objective 0.000000e+00, 306 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 (306 simplex iterations) in 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:04 2012 Optimize a model with 4627 rows, 4517 columns and 17641 nonzeros Presolve removed 20 rows and 460 columns Presolve time: 0.03s Presolved: 4607 rows, 4057 columns, 17181 nonzeros Variable types: 0 continuous, 4057 integer (4057 binary) Root relaxation: objective 0.000000e+00, 305 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 (305 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:04 2012 Optimize a model with 2311 rows, 2261 columns and 8437 nonzeros Presolve removed 20 rows and 220 columns Presolve time: 0.01s Presolved: 2291 rows, 2041 columns, 8217 nonzeros Variable types: 0 continuous, 2041 integer (2041 binary) Root relaxation: objective 0.000000e+00, 301 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 (301 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:04 2012 Optimize a model with 1153 rows, 1133 columns and 3835 nonzeros Presolve removed 20 rows and 100 columns Presolve time: 0.00s Presolved: 1133 rows, 1033 columns, 3735 nonzeros Variable types: 0 continuous, 1033 integer (1033 binary) Root relaxation: objective 0.000000e+00, 278 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 (385 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 16:27:04 2012 Optimize a model with 574 rows, 569 columns and 1534 nonzeros Presolve removed 194 rows and 217 columns Presolve time: 0.00s Presolved: 380 rows, 352 columns, 1140 nonzeros Variable types: 0 continuous, 352 integer (352 binary) Root relaxation: objective 0.000000e+00, 187 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 0 162 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (600 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 16:27:04 2012 Optimize a model with 767 rows, 757 columns and 2301 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 747 rows, 697 columns, 2241 nonzeros Variable types: 0 continuous, 697 integer (697 binary) Root relaxation: objective 0.000000e+00, 291 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 (291 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