
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 08:51:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5801.45.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo5801.45.lp
Reading time = 0.13 seconds
: 71166 rows, 2362 columns, 215325 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 71166 rows, 2362 columns and 215325 nonzeros
Model fingerprint: 0x1620937e
Variable types: 47 continuous, 2315 integer (2315 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 6468 rows and 29 columns
Presolve time: 0.69s
Presolved: 64698 rows, 2333 columns, 196266 nonzeros
Variable types: 0 continuous, 2333 integer (2286 binary)
Root relaxation presolved: 2333 rows, 67031 columns, 198599 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17485    4.6964930e+01   0.000000e+00   1.471814e+04      5s
   33820    4.6953113e+01   0.000000e+00   2.529790e+04     10s
   43977    4.7000000e+01   0.000000e+00   0.000000e+00     14s
   43977    4.7000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.700000e+01, 43977 iterations, 12.72 seconds (6.85 work units)
Total elapsed time = 23.30s (DegenMoves)
Total elapsed time = 25.83s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   47.00000    0  564          -   47.00000      -     -   28s
H    0     0                       9.0000000   47.00000   422%     -   32s
H    0     0                      14.0000000   47.00000   236%     -   32s
H    0     0                      15.0000000   47.00000   213%     -   49s
     0     0   47.00000    0  860   15.00000   47.00000   213%     -   49s

Cutting planes:
  Gomory: 3
  Cover: 1
  MIR: 47
  Zero half: 5
  RLT: 26

Explored 1 nodes (68313 simplex iterations) in 50.18 seconds (31.86 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 14 9 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.700000000000e+01, gap 213.3333%

Wrote result file './lp_solutions/grafo5801.45.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:34:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5801.45.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo5801.45.lp
Reading time = 0.11 seconds
: 71166 rows, 2362 columns, 215325 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 71166 rows, 2362 columns and 215325 nonzeros
Model fingerprint: 0x1620937e
Variable types: 47 continuous, 2315 integer (2315 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 6468 rows and 29 columns
Presolve time: 0.47s
Presolved: 64698 rows, 2333 columns, 196266 nonzeros
Variable types: 0 continuous, 2333 integer (2286 binary)
Root relaxation presolved: 2333 rows, 67031 columns, 198599 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26098    4.6956419e+01   0.000000e+00   1.390675e+04      5s
   43977    4.7000000e+01   0.000000e+00   0.000000e+00      9s
   43977    4.7000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.700000e+01, 43977 iterations, 8.05 seconds (6.85 work units)
Total elapsed time = 16.03s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   47.00000    0  564          -   47.00000      -     -   20s
H    0     0                       9.0000000   47.00000   422%     -   22s
H    0     0                      14.0000000   47.00000   236%     -   22s
H    0     0                      15.0000000   47.00000   213%     -   34s
     0     0   47.00000    0  860   15.00000   47.00000   213%     -   34s
     0     0   47.00000    0  867   15.00000   47.00000   213%     -   36s
     0     0   47.00000    0  851   15.00000   47.00000   213%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 2
  Cover: 7
  MIR: 184
  Zero half: 73
  RLT: 68

Explored 1 nodes (78392 simplex iterations) in 50.08 seconds (43.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 14 9 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.700000000000e+01, gap 213.3333%

Wrote result file './lp_solutions/grafo5801.45.sol'

