current bounds on the number of colors: 0 -- 241 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:38 2012 Optimize a model with 36121 rows, 29219 columns and 136560 nonzeros Presolve removed 20 rows and 2400 columns Presolve time: 0.18s Presolved: 36101 rows, 26819 columns, 134160 nonzeros Variable types: 0 continuous, 26819 integer (26819 binary) Root relaxation: objective 0.000000e+00, 424 iterations, 0.02 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 0.21 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 16:44:39 2012 Optimize a model with 18181 rows, 14759 columns and 68280 nonzeros Presolve removed 20 rows and 1200 columns Presolve time: 0.13s Presolved: 18161 rows, 13559 columns, 67080 nonzeros Variable types: 0 continuous, 13559 integer (13559 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 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 16:44:39 2012 Optimize a model with 9211 rows, 7529 columns and 34140 nonzeros Presolve removed 20 rows and 600 columns Presolve time: 0.06s Presolved: 9191 rows, 6929 columns, 33540 nonzeros Variable types: 0 continuous, 6929 integer (6929 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 0.08 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 16:44:40 2012 Optimize a model with 4726 rows, 3914 columns and 17070 nonzeros Presolve removed 20 rows and 300 columns Presolve time: 0.02s Presolved: 4706 rows, 3614 columns, 16770 nonzeros Variable types: 0 continuous, 3614 integer (3614 binary) Root relaxation: objective 0.000000e+00, 430 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 (672 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 16:44:40 2012 Optimize a model with 2334 rows, 1986 columns and 7966 nonzeros Presolve removed 20 rows and 140 columns Presolve time: 0.01s Presolved: 2314 rows, 1846 columns, 7826 nonzeros Variable types: 0 continuous, 1846 integer (1846 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 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 16:44:40 2012 Optimize a model with 1138 rows, 1022 columns and 3414 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 1118 rows, 962 columns, 3354 nonzeros Variable types: 0 continuous, 962 integer (962 binary) Root relaxation: objective 0.000000e+00, 469 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 (678 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 16:44:40 2012 Optimize a model with 540 rows, 540 columns and 1138 nonzeros Presolve removed 540 rows and 540 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 16:44:40 2012 Optimize a model with 839 rows, 781 columns and 2276 nonzeros Presolve removed 243 rows and 264 columns Presolve time: 0.00s Presolved: 596 rows, 517 columns, 1788 nonzeros Variable types: 0 continuous, 517 integer (517 binary) Root relaxation: objective 0.000000e+00, 248 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (778 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