
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:53:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7541.40.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/grafo7541.40.lp
Reading time = 0.35 seconds
: 193178 rows, 2211 columns, 581399 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 193178 rows, 2211 columns and 581399 nonzeros
Model fingerprint: 0x9023fe14
Variable types: 46 continuous, 2165 integer (2165 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]
Found heuristic solution: objective 1.0000000
Presolve removed 77275 rows and 25 columns
Presolve time: 1.82s
Presolved: 115903 rows, 2186 columns, 349858 nonzeros
Variable types: 0 continuous, 2186 integer (2140 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2183 rows, 118086 columns, 352044 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16026    5.5982354e+01   0.000000e+00   2.078170e+05      5s
   36192    4.4832276e+01   0.000000e+00   7.270954e+04     10s
   56935    4.4787075e+01   0.000000e+00   9.948836e+03     15s
   78247    4.4777018e+01   0.000000e+00   2.319663e+03     20s
   86453    4.5000000e+01   0.000000e+00   0.000000e+00     22s
   86453    4.5000000e+01   0.000000e+00   0.000000e+00     22s
   86453    4.5000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 4.500000e+01, 86453 iterations, 20.11 seconds (11.62 work units)
Total elapsed time = 39.32s (DegenMoves)

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

     0     0   45.00000    0  501    6.00000   45.00000   650%     -   50s

Explored 1 nodes (101136 simplex iterations) in 50.04 seconds (46.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 1 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.500000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo7541.40.sol'

