
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:36:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7111.40.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/grafo7111.40.lp
Reading time = 0.12 seconds
: 72408 rows, 2124 columns, 219030 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 72408 rows, 2124 columns and 219030 nonzeros
Model fingerprint: 0xd8903a14
Variable types: 45 continuous, 2079 integer (2079 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 13823 rows and 23 columns
Presolve time: 0.46s
Presolved: 58585 rows, 2101 columns, 177967 nonzeros
Variable types: 0 continuous, 2101 integer (2056 binary)
Root relaxation presolved: 2101 rows, 60686 columns, 180068 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28352    4.3954884e+01   0.000000e+00   1.192914e+03      5s
   38228    4.4000000e+01   0.000000e+00   0.000000e+00      7s
   38228    4.4000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.400000e+01, 38228 iterations, 6.31 seconds (5.21 work units)
Total elapsed time = 13.90s (DegenMoves)
Total elapsed time = 15.59s (DegenMoves)

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

     0     0   44.00000    0  411          -   44.00000      -     -   21s
H    0     0                       9.0000000   44.00000   389%     -   23s
     0     0   44.00000    0  578    9.00000   44.00000   389%     -   29s
H    0     0                      12.0000000   44.00000   267%     -   30s
     0     0   44.00000    0  551   12.00000   44.00000   267%     -   31s
     0     0   44.00000    0  626   12.00000   44.00000   267%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 45
  Cover: 13
  Clique: 12
  MIR: 101
  Zero half: 33
  RLT: 47
  BQP: 3

Explored 1 nodes (84064 simplex iterations) in 50.10 seconds (50.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 9 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.400000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo7111.40.sol'

