current bounds on the number of colors: 0 -- 232 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:42 2012 Optimize a model with 31668 rows, 27183 columns and 121220 nonzeros Presolve removed 22 rows and 2552 columns Presolve time: 0.16s Presolved: 31646 rows, 24631 columns, 118668 nonzeros Variable types: 0 continuous, 24631 integer (24631 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 simplex iterations) in 0.19 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:42 2012 Optimize a model with 15950 rows, 13727 columns and 60610 nonzeros Presolve removed 22 rows and 1276 columns Presolve time: 0.12s Presolved: 15928 rows, 12451 columns, 59334 nonzeros Variable types: 0 continuous, 12451 integer (12451 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 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 16:40:43 2012 Optimize a model with 8091 rows, 6999 columns and 30305 nonzeros Presolve removed 22 rows and 638 columns Presolve time: 0.05s Presolved: 8069 rows, 6361 columns, 29667 nonzeros Variable types: 0 continuous, 6361 integer (6361 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 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 16:40:43 2012 Optimize a model with 4026 rows, 3519 columns and 14630 nonzeros Presolve removed 22 rows and 308 columns Presolve time: 0.02s Presolved: 4004 rows, 3211 columns, 14322 nonzeros Variable types: 0 continuous, 3211 integer (3211 binary) Root relaxation: objective 0.000000e+00, 410 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 (627 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 16:40:43 2012 Optimize a model with 2129 rows, 1895 columns and 7315 nonzeros Presolve removed 22 rows and 154 columns Presolve time: 0.01s Presolved: 2107 rows, 1741 columns, 7161 nonzeros Variable types: 0 continuous, 1741 integer (1741 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 (576 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 16:40:43 2012 Optimize a model with 1045 rows, 967 columns and 3135 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 1023 rows, 901 columns, 3069 nonzeros Variable types: 0 continuous, 901 integer (901 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 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 16:40:43 2012 Optimize a model with 503 rows, 503 columns and 1045 nonzeros Presolve removed 503 rows and 503 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 16:40:43 2012 Optimize a model with 774 rows, 735 columns and 2090 nonzeros Presolve removed 240 rows and 266 columns Presolve time: 0.00s Presolved: 534 rows, 469 columns, 1602 nonzeros Variable types: 0 continuous, 469 integer (469 binary) Root relaxation: objective 0.000000e+00, 235 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 0 199 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (721 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