
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:27:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7097.42.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/grafo7097.42.lp
Reading time = 0.43 seconds
: 227603 rows, 2629 columns, 685190 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 227603 rows, 2629 columns and 685190 nonzeros
Model fingerprint: 0x00c4bd2b
Variable types: 51 continuous, 2578 integer (2578 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 88421 rows and 12 columns
Presolve time: 1.97s
Presolved: 139182 rows, 2617 columns, 420335 nonzeros
Variable types: 0 continuous, 2617 integer (2566 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2609 rows, 141791 columns, 422952 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12439    8.2241471e+01   0.000000e+00   1.838278e+06      5s
   29106    6.0798030e+01   0.000000e+00   1.059971e+05     10s
   46126    5.8745522e+01   0.000000e+00   2.608347e+04     15s
   61876    5.8733236e+01   0.000000e+00   1.851506e+03     20s
   77163    5.9000000e+01   0.000000e+00   0.000000e+00     25s
   77163    5.9000000e+01   0.000000e+00   0.000000e+00     25s
   77163    5.9000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 5.900000e+01, 77163 iterations, 22.33 seconds (12.94 work units)
Total elapsed time = 25.16s (DegenMoves)

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

     0     0   59.00000    0 1241    5.00000   59.00000  1080%     -   50s

Explored 1 nodes (88202 simplex iterations) in 50.05 seconds (36.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 5.900000000000e+01, gap 1080.0000%

Wrote result file './lp_solutions/grafo7097.42.sol'

