Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.0009269/0.0009269, allocations: 85.17 kB / 19.87 MB, free: 4.617 MB / 18.57 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.0008941/0.0008941, allocations: 169 kB / 23.27 MB, free: 1.223 MB / 18.57 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 0.9514/0.9514, allocations: 177.1 MB / 203.7 MB, free: 5.508 MB / 186.7 MB
"
[Timeout remaining time 179]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo", uses=false) [Timeout 180]
"[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:108:writable] Warning: Lexer treating \\ as \\\\, since \\e is not a valid Modelica escape sequence.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:116:writable] Warning: Lexer treating \\ as \\\\, since \\< is not a valid Modelica escape sequence.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.order:0:0-0:0:readonly] Warning: Found duplicate names in package.order file: A, B, C.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.mo:2:1-70:10:writable] Warning: C was referenced in the package.order file, but was not found in package.mo, C/package.mo or C.mo.
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo): time 0.7434/0.7434, allocations: 154.6 MB / 414.8 MB, free: 0.543 MB / 378.7 MB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/Cryptographics/BaseClasses/sha.mo:2:1-19:8:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/File/sha2.mo:2:1-9:9:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 179]
Using package IDEAS with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo)
Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo)
Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo)
Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo)
Running command: translateModel(IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC")
translateModel(IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC") [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 1.824e-06/1.824e-06, allocations: 0 / 0.5208 GB, free: 1.863 MB / 490.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 2.317e-05/2.5e-05, allocations: 2.312 kB / 0.5208 GB, free: 1.859 MB / 490.7 MB
Notification: Performance of NFInst.instantiate(IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC): time 0.007872/0.007897, allocations: 6.192 MB / 0.5268 GB, free: 11.66 MB / 0.4948 GB
Notification: Performance of NFInst.instExpressions: time 0.004195/0.01209, allocations: 2.079 MB / 0.5289 GB, free: 9.578 MB / 0.4948 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0005714/0.01266, allocations: 48.38 kB / 0.5289 GB, free: 9.531 MB / 0.4948 GB
Notification: Performance of NFTyping.typeComponents: time 0.0007763/0.01344, allocations: 255.3 kB / 0.5292 GB, free: 9.281 MB / 0.4948 GB
Notification: Performance of NFTyping.typeBindings: time 0.001228/0.01467, allocations: 0.6542 MB / 0.5298 GB, free: 8.629 MB / 0.4948 GB
Notification: Performance of NFTyping.typeClassSections: time 0.00112/0.01579, allocations: 0.5621 MB / 0.5303 GB, free: 8.07 MB / 0.4948 GB
Notification: Performance of NFFlatten.flatten: time 0.002866/0.01865, allocations: 2.745 MB / 0.533 GB, free: 5.32 MB / 0.4948 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.002279/0.02093, allocations: 1.371 MB / 0.5344 GB, free: 3.906 MB / 0.4948 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.002391/0.02332, allocations: 1.564 MB / 0.5359 GB, free: 2.34 MB / 0.4948 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.001606/0.02493, allocations: 1.426 MB / 0.5373 GB, free: 0.9141 MB / 0.4948 GB
Notification: Performance of NFPackage.collectConstants: time 0.0004332/0.02536, allocations: 218.7 kB / 0.5375 GB, free: 0.7031 MB / 0.4948 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0005908/0.02595, allocations: 319.7 kB / 0.5378 GB, free: 400 kB / 0.4948 GB
Notification: Performance of NFScalarize.scalarize: time 0.0007558/0.02671, allocations: 1.064 MB / 0.5388 GB, free: 15.32 MB / 0.5105 GB
Notification: Performance of NFVerifyModel.verify: time 0.0008799/0.02759, allocations: 0.7173 MB / 0.5395 GB, free: 14.61 MB / 0.5105 GB
Notification: Performance of NFConvertDAE.convert: time 0.001751/0.02934, allocations: 1.913 MB / 0.5414 GB, free: 12.69 MB / 0.5105 GB
Notification: Performance of FrontEnd - DAE generated: time 5.25e-06/0.02935, allocations: 0 / 0.5414 GB, free: 12.69 MB / 0.5105 GB
Notification: Performance of FrontEnd: time 1.292e-06/0.02935, allocations: 0 / 0.5414 GB, free: 12.69 MB / 0.5105 GB
Notification: Performance of Transformations before backend: time 6.423e-05/0.02941, allocations: 1.219 kB / 0.5414 GB, free: 12.69 MB / 0.5105 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 419
 * Number of variables: 419
Notification: Performance of Generate backend data structure: time 0.002377/0.03179, allocations: 2.065 MB / 0.5434 GB, free: 10.58 MB / 0.5105 GB
Notification: Performance of prepare preOptimizeDAE: time 3.871e-05/0.03183, allocations: 8.031 kB / 0.5434 GB, free: 10.57 MB / 0.5105 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002597/0.03442, allocations: 0.9141 MB / 0.5443 GB, free: 9.66 MB / 0.5105 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001013/0.03544, allocations: 0.9517 MB / 0.5453 GB, free: 8.688 MB / 0.5105 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.353e-05/0.03549, allocations: 103.3 kB / 0.5454 GB, free: 8.586 MB / 0.5105 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001666/0.03566, allocations: 145.2 kB / 0.5455 GB, free: 8.445 MB / 0.5105 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001538/0.03719, allocations: 1.52 MB / 0.547 GB, free: 6.777 MB / 0.5105 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.834e-05/0.03722, allocations: 8.797 kB / 0.547 GB, free: 6.77 MB / 0.5105 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001055/0.03733, allocations: 60.34 kB / 0.547 GB, free: 6.711 MB / 0.5105 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001323/0.03746, allocations: 183.5 kB / 0.5472 GB, free: 6.531 MB / 0.5105 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008069/0.03827, allocations: 0.5632 MB / 0.5478 GB, free: 5.965 MB / 0.5105 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.006238/0.04451, allocations: 8.039 MB / 0.5556 GB, free: 13.71 MB / 0.5261 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0005513/0.04506, allocations: 396.4 kB / 0.556 GB, free: 13.3 MB / 0.5261 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0003178/0.04537, allocations: 295.8 kB / 0.5563 GB, free: 13.01 MB / 0.5261 GB
Notification: Performance of preOpt evalFunc (simulation): time 4.865e-05/0.04542, allocations: 17.09 kB / 0.5563 GB, free: 13 MB / 0.5261 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.503e-05/0.04545, allocations: 46.05 kB / 0.5563 GB, free: 12.94 MB / 0.5261 GB
Notification: Performance of pre-optimization done (n=82): time 2.345e-06/0.04545, allocations: 1.188 kB / 0.5563 GB, free: 12.94 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=139): time 0.009265/0.05472, allocations: 5 MB / 0.5612 GB, free: 8.02 MB / 0.5261 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.342e-05/0.05475, allocations: 69.28 kB / 0.5613 GB, free: 7.941 MB / 0.5261 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005301/0.05528, allocations: 0.7455 MB / 0.562 GB, free: 7.184 MB / 0.5261 GB
Notification: Performance of collectPreVariables (initialization): time 8.576e-05/0.05536, allocations: 45.7 kB / 0.5621 GB, free: 7.133 MB / 0.5261 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000362/0.05573, allocations: 0.8197 MB / 0.5629 GB, free: 6.301 MB / 0.5261 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0003121/0.05604, allocations: 0.5191 MB / 0.5634 GB, free: 5.777 MB / 0.5261 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003293/0.05637, allocations: 289.8 kB / 0.5636 GB, free: 5.484 MB / 0.5261 GB
Notification: Performance of setup shared object (initialization): time 0.000141/0.05651, allocations: 0.5315 MB / 0.5642 GB, free: 4.945 MB / 0.5261 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.000348/0.05686, allocations: 249.5 kB / 0.5644 GB, free: 4.703 MB / 0.5261 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005476/0.0574, allocations: 0.7125 MB / 0.5651 GB, free: 3.828 MB / 0.5261 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0009766/0.05838, allocations: 1.04 MB / 0.5661 GB, free: 2.633 MB / 0.5261 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.664e-06/0.05839, allocations: 11.94 kB / 0.5661 GB, free: 2.621 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=191) (initialization): time 0.004428/0.06282, allocations: 2.527 MB / 0.5686 GB, free: 68 kB / 0.5261 GB
Notification: Performance of prepare postOptimizeDAE: time 2.129e-05/0.06284, allocations: 8.406 kB / 0.5686 GB, free: 60 kB / 0.5261 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.629e-05/0.06286, allocations: 12 kB / 0.5686 GB, free: 48 kB / 0.5261 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.004162/0.06702, allocations: 1.716 MB / 0.5703 GB, free: 14.32 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004224/0.06744, allocations: 167.7 kB / 0.5704 GB, free: 14.16 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01275/0.08019, allocations: 13.9 MB / 0.584 GB, free: 15.82 MB / 0.5573 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007403/0.08093, allocations: 40 kB / 0.5841 GB, free: 15.78 MB / 0.5573 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.025e-05/0.08101, allocations: 43.98 kB / 0.5841 GB, free: 15.73 MB / 0.5573 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 39
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (99):
 * Single equations (assignments): 95
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 4
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 4 systems
   {(6,12,100.0%), (6,12,100.0%), (6,24,100.0%), (6,24,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.0003989/0.08141, allocations: 240.3 kB / 0.5843 GB, free: 15.49 MB / 0.5573 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001922/0.0816, allocations: 159.3 kB / 0.5845 GB, free: 15.33 MB / 0.5573 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003863/0.08546, allocations: 2.444 MB / 0.5869 GB, free: 12.85 MB / 0.5573 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.288e-06/0.08547, allocations: 12 kB / 0.5869 GB, free: 12.84 MB / 0.5573 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 2.821e-05/0.0855, allocations: 20 kB / 0.5869 GB, free: 12.82 MB / 0.5573 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.345e-05/0.08551, allocations: 7.969 kB / 0.5869 GB, free: 12.81 MB / 0.5573 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006243/0.09175, allocations: 3.988 MB / 0.5908 GB, free: 8.703 MB / 0.5573 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.59e-06/0.09176, allocations: 4 kB / 0.5908 GB, free: 8.699 MB / 0.5573 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002126/0.09197, allocations: 103.8 kB / 0.5909 GB, free: 8.598 MB / 0.5573 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.003732/0.0957, allocations: 1.62 MB / 0.5925 GB, free: 6.969 MB / 0.5573 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.185e-05/0.09578, allocations: 28 kB / 0.5925 GB, free: 6.941 MB / 0.5573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01159/0.1074, allocations: 12.83 MB / 0.605 GB, free: 9.668 MB / 0.573 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.559e-06/0.1074, allocations: 7.938 kB / 0.605 GB, free: 9.66 MB / 0.573 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003995/0.1114, allocations: 2.519 MB / 0.6075 GB, free: 7.035 MB / 0.573 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0005462/0.1119, allocations: 307 kB / 0.6078 GB, free: 6.734 MB / 0.573 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001103/0.112, allocations: 28.19 kB / 0.6078 GB, free: 6.707 MB / 0.573 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003821/0.1124, allocations: 32 kB / 0.6079 GB, free: 6.676 MB / 0.573 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003526/0.1128, allocations: 132.9 kB / 0.608 GB, free: 6.547 MB / 0.573 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.707e-05/0.1128, allocations: 32 kB / 0.608 GB, free: 6.516 MB / 0.573 GB
Notification: Performance of sorting global known variables: time 0.0005537/0.1134, allocations: 430.8 kB / 0.6084 GB, free: 6.102 MB / 0.573 GB
Notification: Performance of sort global known variables: time 9e-08/0.1134, allocations: 0 / 0.6084 GB, free: 6.102 MB / 0.573 GB
Notification: Performance of remove unused functions: time 0.001697/0.1151, allocations: 0.7227 MB / 0.6091 GB, free: 5.379 MB / 0.573 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 16
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (62):
 * Single equations (assignments): 58
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 4
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 4 systems
   {(6,12,100.0%), (6,24,100.0%), (6,6,100.0%), (10,14,84.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.0001947/0.1153, allocations: 135.1 kB / 0.6093 GB, free: 5.238 MB / 0.573 GB
Notification: Performance of simCode: created initialization part: time 0.002728/0.118, allocations: 2.338 MB / 0.6115 GB, free: 2.832 MB / 0.573 GB
Notification: Performance of simCode: created event and clocks part: time 5.3e-06/0.118, allocations: 0 / 0.6115 GB, free: 2.832 MB / 0.573 GB
Notification: Performance of simCode: created simulation system equations: time 0.002231/0.1202, allocations: 1.89 MB / 0.6134 GB, free: 0.8633 MB / 0.573 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0008259/0.1211, allocations: 223.9 kB / 0.6136 GB, free: 0.6484 MB / 0.573 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004285/0.1253, allocations: 3.239 MB / 0.6168 GB, free: 13.32 MB / 0.5886 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005197/0.1259, allocations: 0.5384 MB / 0.6173 GB, free: 12.76 MB / 0.5886 GB
Notification: Performance of simCode: alias equations: time 0.0003293/0.1262, allocations: 101.5 kB / 0.6174 GB, free: 12.66 MB / 0.5886 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002912/0.1265, allocations: 234.1 kB / 0.6176 GB, free: 12.43 MB / 0.5886 GB
Notification: Performance of SimCode: time 1.723e-06/0.1265, allocations: 3.938 kB / 0.6176 GB, free: 12.43 MB / 0.5886 GB
Notification: Performance of Templates: time 0.04315/0.1696, allocations: 43.86 MB / 0.6604 GB, free: 0.8398 MB / 0.6198 GB
"
[Timeout remaining time 660]
make -j1 -f IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.makefile [Timeout 660]
(rm -f IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.pipe ; mkfifo IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.pipe ; head -c 1048576 < IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.pipe >> ../files/IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.sim & ./IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC -abortSlowSimulation -alarm=240  -lv LOG_STATS > IDEAS_IDEAS.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLineMatrix_RLC.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 4.127065413631499]