current bounds on the number of colors: 0 -- 52 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:57 2012 Optimize a model with 1534 rows, 1409 columns and 5798 nonzeros Presolve removed 3 rows and 78 columns Presolve time: 0.01s Presolved: 1531 rows, 1331 columns, 5720 nonzeros Variable types: 0 continuous, 1331 integer (1331 binary) Root relaxation: objective 0.000000e+00, 93 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 (93 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 -- 26 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:57 2012 Optimize a model with 793 rows, 733 columns and 2899 nonzeros Presolve removed 3 rows and 39 columns Presolve time: 0.00s Presolved: 790 rows, 694 columns, 2860 nonzeros Variable types: 0 continuous, 694 integer (694 binary) Root relaxation: objective 0.000000e+00, 94 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 (144 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 -- 13 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:57 2012 Optimize a model with 394 rows, 369 columns and 1338 nonzeros Presolve removed 3 rows and 18 columns Presolve time: 0.00s Presolved: 391 rows, 351 columns, 1320 nonzeros Variable types: 0 continuous, 351 integer (351 binary) Root relaxation: objective 0.000000e+00, 81 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 (81 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 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:57 2012 Optimize a model with 223 rows, 213 columns and 669 nonzeros Presolve removed 3 rows and 9 columns Presolve time: 0.00s Presolved: 220 rows, 204 columns, 660 nonzeros Variable types: 0 continuous, 204 integer (204 binary) Root relaxation: objective 0.000000e+00, 88 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 (124 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 Fri Dec 14 18:19:57 2012 Optimize a model with 109 rows, 109 columns and 223 nonzeros Presolve removed 109 rows and 109 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 Fri Dec 14 18:19:57 2012 Optimize a model with 166 rows, 161 columns and 446 nonzeros Presolve removed 54 rows and 58 columns Presolve time: 0.00s Presolved: 112 rows, 103 columns, 336 nonzeros Variable types: 0 continuous, 103 integer (103 binary) Root relaxation: objective 0.000000e+00, 51 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 47 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (186 simplex iterations) in 0.00 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