
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:06:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6960.44.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/grafo6960.44.lp
Reading time = 0.33 seconds
: 206701 rows, 3085 columns, 623090 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 206701 rows, 3085 columns and 623090 nonzeros
Model fingerprint: 0x547de99c
Variable types: 58 continuous, 3027 integer (3027 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, 6e+01]
Found heuristic solution: objective -0.0000000
Presolve removed 65422 rows and 30 columns
Presolve time: 1.63s
Presolved: 141279 rows, 3055 columns, 427363 nonzeros
Variable types: 0 continuous, 3055 integer (2997 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 3043 rows, 144322 columns, 430418 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14442    6.4655369e+01   0.000000e+00   4.927680e+05      5s
   32227    6.0572083e+01   0.000000e+00   1.000441e+05     10s
   49432    6.0550761e+01   0.000000e+00   5.229977e+03     15s
   66082    6.0544825e+01   0.000000e+00   4.870280e+03     20s
   82177    6.0543167e+01   0.000000e+00   8.963273e+01     25s
   83955    6.1000000e+01   0.000000e+00   0.000000e+00     26s
   83955    6.1000000e+01   0.000000e+00   0.000000e+00     26s
   83955    6.1000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 6.100000e+01, 83955 iterations, 23.91 seconds (20.05 work units)

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

     0     0   61.00000    0 1710    7.00000   61.00000   771%     -   50s

Explored 1 nodes (94675 simplex iterations) in 50.04 seconds (44.88 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.100000000000e+01, gap 771.4286%

Wrote result file './lp_solutions/grafo6960.44.sol'

