current bounds on the number of colors: 0 -- 235 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:06 2012 Optimize a model with 34399 rows, 27787 columns and 129987 nonzeros Presolve removed 18 rows and 2106 columns Presolve time: 0.17s Presolved: 34381 rows, 25681 columns, 127881 nonzeros Variable types: 0 continuous, 25681 integer (25681 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:07 2012 Optimize a model with 17171 rows, 13922 columns and 64438 nonzeros Presolve removed 18 rows and 1044 columns Presolve time: 0.12s Presolved: 17153 rows, 12878 columns, 63394 nonzeros Variable types: 0 continuous, 12878 integer (12878 binary) Root relaxation: objective 0.000000e+00, 408 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 (408 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:08 2012 Optimize a model with 8703 rows, 7107 columns and 32219 nonzeros Presolve removed 18 rows and 522 columns Presolve time: 0.05s Presolved: 8685 rows, 6585 columns, 31697 nonzeros Variable types: 0 continuous, 6585 integer (6585 binary) Root relaxation: objective 0.000000e+00, 408 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 (408 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:08 2012 Optimize a model with 4323 rows, 3582 columns and 15554 nonzeros Presolve removed 18 rows and 252 columns Presolve time: 0.02s Presolved: 4305 rows, 3330 columns, 15302 nonzeros Variable types: 0 continuous, 3330 integer (3330 binary) Root relaxation: objective 0.000000e+00, 432 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 (671 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:08 2012 Optimize a model with 2279 rows, 1937 columns and 7777 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2261 rows, 1811 columns, 7651 nonzeros Variable types: 0 continuous, 1811 integer (1811 binary) Root relaxation: objective 0.000000e+00, 404 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 (404 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 16:42:08 2012 Optimize a model with 1111 rows, 997 columns and 3333 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1093 rows, 943 columns, 3279 nonzeros Variable types: 0 continuous, 943 integer (943 binary) Root relaxation: objective 0.000000e+00, 463 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 6 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (962 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:08 2012 Optimize a model with 527 rows, 527 columns and 1111 nonzeros Presolve removed 527 rows and 527 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 16:42:08 2012 Optimize a model with 819 rows, 762 columns and 2222 nonzeros Presolve removed 241 rows and 262 columns Presolve time: 0.00s Presolved: 578 rows, 500 columns, 1734 nonzeros Variable types: 0 continuous, 500 integer (500 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 0 211 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (809 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