current bounds on the number of colors: 0 -- 240 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:54 2012 Optimize a model with 34320 rows, 29084 columns and 131040 nonzeros Presolve removed 23 rows and 2760 columns Presolve time: 0.15s Presolved: 34297 rows, 26324 columns, 128280 nonzeros Variable types: 0 continuous, 26324 integer (26324 binary) Root relaxation: objective 0.000000e+00, 416 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 (416 simplex iterations) in 0.18 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:55 2012 Optimize a model with 17280 rows, 14684 columns and 65520 nonzeros Presolve removed 23 rows and 1380 columns Presolve time: 0.12s Presolved: 17257 rows, 13304 columns, 64140 nonzeros Variable types: 0 continuous, 13304 integer (13304 binary) Root relaxation: objective 0.000000e+00, 416 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 (416 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:55 2012 Optimize a model with 8760 rows, 7484 columns and 32760 nonzeros Presolve removed 23 rows and 690 columns Presolve time: 0.06s Presolved: 8737 rows, 6794 columns, 32070 nonzeros Variable types: 0 continuous, 6794 integer (6794 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 0.06 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:55 2012 Optimize a model with 4500 rows, 3884 columns and 16380 nonzeros Presolve removed 23 rows and 345 columns Presolve time: 0.02s Presolved: 4477 rows, 3539 columns, 16035 nonzeros Variable types: 0 continuous, 3539 integer (3539 binary) Root relaxation: objective 0.000000e+00, 448 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 (698 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:55 2012 Optimize a model with 2228 rows, 1964 columns and 7644 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2205 rows, 1803 columns, 7483 nonzeros Variable types: 0 continuous, 1803 integer (1803 binary) Root relaxation: objective 0.000000e+00, 396 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 (559 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:56 2012 Optimize a model with 1092 rows, 1004 columns and 3276 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1069 rows, 935 columns, 3207 nonzeros Variable types: 0 continuous, 935 integer (935 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 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 16:43:56 2012 Optimize a model with 524 rows, 524 columns and 1092 nonzeros Presolve removed 524 rows and 524 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 16:43:56 2012 Optimize a model with 808 rows, 764 columns and 2184 nonzeros Presolve removed 246 rows and 272 columns Presolve time: 0.00s Presolved: 562 rows, 492 columns, 1686 nonzeros Variable types: 0 continuous, 492 integer (492 binary) Root relaxation: objective 0.000000e+00, 246 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 0 211 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (824 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