
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:38:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7670.40.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/grafo7670.40.lp
Reading time = 0.19 seconds
: 115301 rows, 2510 columns, 348189 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 115301 rows, 2510 columns and 348189 nonzeros
Model fingerprint: 0x48c274e5
Variable types: 52 continuous, 2458 integer (2458 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 29895 rows and 36 columns
Presolve time: 0.80s
Presolved: 85406 rows, 2474 columns, 259006 nonzeros
Variable types: 0 continuous, 2474 integer (2422 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2468 rows, 87874 columns, 261480 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19135    5.7959453e+01   0.000000e+00   6.841349e+04      5s
   40222    5.7934825e+01   0.000000e+00   8.205778e+04     10s
   61023    5.7925527e+01   0.000000e+00   3.673914e+04     15s
   82291    5.7921915e+01   0.000000e+00   3.339638e+03     20s
   99643    5.8000000e+01   0.000000e+00   0.000000e+00     24s
   99643    5.8000000e+01   0.000000e+00   0.000000e+00     24s
   99643    5.8000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 5.800000e+01, 99643 iterations, 23.36 seconds (20.24 work units)
Total elapsed time = 45.33s (DegenMoves)

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

     0     0   58.00000    0  918    9.00000   58.00000   544%     -   50s

Explored 1 nodes (118749 simplex iterations) in 50.05 seconds (50.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.800000000000e+01, gap 544.4444%

Wrote result file './lp_solutions/grafo7670.40.sol'

