
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:41:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2970.38.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/grafo2970.38.lp
Reading time = 0.15 seconds
: 93345 rows, 2082 columns, 281861 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 93345 rows, 2082 columns and 281861 nonzeros
Model fingerprint: 0x2d300da4
Variable types: 44 continuous, 2038 integer (2038 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 28879 rows and 10 columns
Presolve time: 0.61s
Presolved: 64466 rows, 2072 columns, 195783 nonzeros
Variable types: 0 continuous, 2072 integer (2028 binary)
Root relaxation presolved: 2068 rows, 66534 columns, 197855 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25850    4.4695195e+01   0.000000e+00   1.262228e+04      5s
   37191    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   37191    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   37191    4.5000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.500000e+01, 37191 iterations, 6.35 seconds (4.99 work units)
Total elapsed time = 14.11s (DegenMoves)
Total elapsed time = 15.46s (DegenMoves)

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

     0     0   45.00000    0  446          -   45.00000      -     -   16s
H    0     0                       7.0000000   45.00000   543%     -   16s
H    0     0                       9.0000000   45.00000   400%     -   16s
     0     0   45.00000    0  605    9.00000   45.00000   400%     -   23s
     0     0   45.00000    0  598    9.00000   45.00000   400%     -   25s
     0     0   45.00000    0  320    9.00000   45.00000   400%     -   38s
     0     0   45.00000    0  294    9.00000   45.00000   400%     -   38s
     0     0   45.00000    0  602    9.00000   45.00000   400%     -   50s

Cutting planes:
  Cover: 33
  Clique: 7
  MIR: 296
  GUB cover: 2
  Zero half: 82
  RLT: 67
  BQP: 1

Explored 1 nodes (74307 simplex iterations) in 50.10 seconds (44.11 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo2970.38.sol'

