Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo): time 0.04792/0.04792, allocations: 9.511 MB / 29.37 MB, free: 4.934 MB / 24.77 MB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/WorkInProgress.mo:11:9-20:24:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/WorkInProgress.mo:130:9-144:24:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 180]
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 0.0008229/0.0008229, allocations: 103.3 kB / 35.55 MB, free: 100 kB / 24.77 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 0.8635/0.8635, allocations: 158.6 MB / 197.4 MB, free: 6.879 MB / 186.7 MB
"
[Timeout remaining time 179]
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 0.001363/0.001363, allocations: 167.4 kB / 249.9 MB, free: 5.426 MB / 234.7 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/package.mo): time 0.2264/0.2264, allocations: 59.7 MB / 312.9 MB, free: 6.32 MB / 298.7 MB
"
[Timeout remaining time 180]
Using package OpenIPSL with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/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 Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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)
Using package Modelica_Synchronous with version 0.93.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo)
Running command: translateModel(OpenIPSL.Tests.Controls.PSSE.ES.EXAC1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1")
translateModel(OpenIPSL.Tests.Controls.PSSE.ES.EXAC1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1") [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 1.433e-06/1.433e-06, allocations: 0 / 351 MB, free: 144 kB / 330.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 1.567e-05/1.71e-05, allocations: 6.25 kB / 351 MB, free: 136 kB / 330.7 MB
Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSSE.ES.EXAC1): time 0.1695/0.1695, allocations: 8.255 MB / 359.3 MB, free: 18.82 MB / 330.7 MB
Notification: Performance of NFInst.instExpressions: time 0.007089/0.1766, allocations: 2.9 MB / 362.2 MB, free: 16.83 MB / 330.7 MB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001548/0.1781, allocations: 12.34 kB / 362.2 MB, free: 16.83 MB / 330.7 MB
Notification: Performance of NFTyping.typeComponents: time 0.0009648/0.1791, allocations: 357.2 kB / 362.5 MB, free: 16.56 MB / 330.7 MB
Notification: Performance of NFTyping.typeBindings: time 0.003089/0.1822, allocations: 1.327 MB / 363.8 MB, free: 15.52 MB / 330.7 MB
Notification: Performance of NFTyping.typeClassSections: time 0.001841/0.184, allocations: 0.9074 MB / 364.8 MB, free: 14.85 MB / 330.7 MB
Notification: Performance of NFFlatten.flatten: time 0.003307/0.1873, allocations: 2.656 MB / 367.4 MB, free: 13.22 MB / 330.7 MB
Notification: Performance of NFFlatten.resolveConnections: time 0.0007298/0.1881, allocations: 365 kB / 367.8 MB, free: 12.95 MB / 330.7 MB
Notification: Performance of NFEvalConstants.evaluate: time 0.002285/0.1903, allocations: 1.41 MB / 369.2 MB, free: 12.01 MB / 330.7 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.001339/0.1917, allocations: 1.004 MB / 370.2 MB, free: 11.11 MB / 330.7 MB
Notification: Performance of NFPackage.collectConstants: time 0.0003619/0.192, allocations: 212 kB / 370.4 MB, free: 10.9 MB / 330.7 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.0007719/0.1928, allocations: 439.6 kB / 370.8 MB, free: 10.47 MB / 330.7 MB
Notification: Performance of NFScalarize.scalarize: time 0.0003013/0.1931, allocations: 0.5214 MB / 371.3 MB, free: 9.945 MB / 330.7 MB
Notification: Performance of NFVerifyModel.verify: time 0.0006436/0.1938, allocations: 0.698 MB / 372 MB, free: 9.246 MB / 330.7 MB
Notification: Performance of NFConvertDAE.convert: time 0.00195/0.1957, allocations: 1.872 MB / 373.9 MB, free: 7.367 MB / 330.7 MB
Notification: Performance of FrontEnd - DAE generated: time 5.27e-06/0.1957, allocations: 0 / 373.9 MB, free: 7.367 MB / 330.7 MB
Notification: Performance of FrontEnd: time 1.873e-06/0.1957, allocations: 1.156 kB / 373.9 MB, free: 7.367 MB / 330.7 MB
Notification: Performance of Transformations before backend: time 5.606e-05/0.1958, allocations: 0 / 373.9 MB, free: 7.367 MB / 330.7 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 276
 * Number of variables: 276
Notification: Performance of Generate backend data structure: time 0.0086/0.2044, allocations: 4.105 MB / 378 MB, free: 3.273 MB / 330.7 MB
Notification: Performance of prepare preOptimizeDAE: time 4.591e-05/0.2044, allocations: 8.75 kB / 378 MB, free: 3.266 MB / 330.7 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003445/0.2079, allocations: 0.964 MB / 379 MB, free: 2.312 MB / 330.7 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001354/0.2092, allocations: 0.7897 MB / 379.8 MB, free: 1.488 MB / 330.7 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003245/0.2095, allocations: 0.7665 MB / 380.5 MB, free: 0.5742 MB / 330.7 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0005817/0.2101, allocations: 124 kB / 380.7 MB, free: 464 kB / 330.7 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001519/0.2116, allocations: 0.9733 MB / 381.6 MB, free: 15.43 MB / 346.7 MB
Notification: Performance of preOpt findStateOrder (simulation): time 2.232e-05/0.2117, allocations: 0 / 381.6 MB, free: 15.43 MB / 346.7 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000101/0.2118, allocations: 48.66 kB / 381.7 MB, free: 15.39 MB / 346.7 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.507e-05/0.2118, allocations: 28 kB / 381.7 MB, free: 15.36 MB / 346.7 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009873/0.2128, allocations: 463.9 kB / 382.2 MB, free: 14.89 MB / 346.7 MB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.005408/0.2182, allocations: 2.776 MB / 384.9 MB, free: 12.06 MB / 346.7 MB
Notification: Performance of preOpt comSubExp (simulation): time 0.002483/0.2207, allocations: 1.423 MB / 386.4 MB, free: 10.63 MB / 346.7 MB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0003736/0.221, allocations: 322.4 kB / 386.7 MB, free: 10.3 MB / 346.7 MB
Notification: Performance of preOpt evalFunc (simulation): time 0.0001969/0.2212, allocations: 65.25 kB / 386.7 MB, free: 10.24 MB / 346.7 MB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00062/0.2219, allocations: 0.6024 MB / 387.3 MB, free: 9.617 MB / 346.7 MB
Notification: Performance of pre-optimization done (n=136): time 2.955e-06/0.2219, allocations: 0 / 387.3 MB, free: 9.617 MB / 346.7 MB
Notification: Performance of matching and sorting (n=136): time 0.0148/0.2367, allocations: 6.672 MB / 394 MB, free: 2.93 MB / 346.7 MB
Notification: Performance of inlineWhenForInitialization (initialization): time 5.606e-05/0.2367, allocations: 116.1 kB / 394.1 MB, free: 2.789 MB / 346.7 MB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001244/0.238, allocations: 1.182 MB / 395.3 MB, free: 1.598 MB / 346.7 MB
Notification: Performance of collectPreVariables (initialization): time 0.000207/0.2382, allocations: 61.69 kB / 395.4 MB, free: 1.531 MB / 346.7 MB
Notification: Performance of collectInitialEqns (initialization): time 0.000284/0.2385, allocations: 486.5 kB / 395.8 MB, free: 1.047 MB / 346.7 MB
Notification: Performance of collectInitialBindings (initialization): time 0.0004248/0.2389, allocations: 0.5112 MB / 396.4 MB, free: 0.5312 MB / 346.7 MB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004408/0.2393, allocations: 375.2 kB / 396.7 MB, free: 160 kB / 346.7 MB
Notification: Performance of setup shared object (initialization): time 0.000104/0.2394, allocations: 301.1 kB / 397 MB, free: 15.86 MB / 362.7 MB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007337/0.2402, allocations: 410.8 kB / 397.4 MB, free: 15.45 MB / 362.7 MB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.000761/0.2409, allocations: 0.606 MB / 398 MB, free: 14.79 MB / 362.7 MB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001393/0.2423, allocations: 1.166 MB / 399.2 MB, free: 13.56 MB / 362.7 MB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.452e-06/0.2423, allocations: 0 / 399.2 MB, free: 13.56 MB / 362.7 MB
Notification: Performance of matching and sorting (n=258) (initialization): time 0.004491/0.2468, allocations: 2.649 MB / 401.8 MB, free: 10.9 MB / 362.7 MB
Notification: Performance of prepare postOptimizeDAE: time 2.521e-05/0.2468, allocations: 4 kB / 401.8 MB, free: 10.89 MB / 362.7 MB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.467e-05/0.2468, allocations: 4 kB / 401.9 MB, free: 10.89 MB / 362.7 MB
Warning: Initialization start-value cycle: the start attribute of 'eXAC1.rotatingExciterWithDemagnetizationLimited.sISO.y' depends, directly or transitively, on the variable itself. The start attribute defines the initial value of 'eXAC1.rotatingExciterWithDemagnetizationLimited.sISO.y' and therefore cannot be computed from it, so this start value cannot be used to initialize the variable (see Modelica Specification section 4.9.6). This is possibly a modeling error; if unintended, give 'eXAC1.rotatingExciterWithDemagnetizationLimited.sISO.y' a start value that does not depend on itself. Use the transformational debugger to inspect the dependency chain.
Notification: Performance of postOpt tearingSystem (initialization): time 0.003448/0.2503, allocations: 1.775 MB / 403.6 MB, free: 9.117 MB / 362.7 MB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007852/0.2511, allocations: 331.5 kB / 404 MB, free: 8.793 MB / 362.7 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002011/0.2531, allocations: 1.935 MB / 405.9 MB, free: 6.801 MB / 362.7 MB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001031/0.2541, allocations: 230.8 kB / 406.1 MB, free: 6.574 MB / 362.7 MB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.411e-05/0.2542, allocations: 51.98 kB / 406.2 MB, free: 6.523 MB / 362.7 MB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 17
 * Number of states: 0 ()
 * Number of discrete variables: 3 (eXAC1.rotatingExciterWithDemagnetizationLimited.sISO.local_reset,$whenCondition2,$whenCondition1)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (193):
 * Single equations (assignments): 191
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 2 systems
   {(30,26), (1,10)}
Notification: Performance of prepare postOptimizeDAE: time 0.0004665/0.2547, allocations: 204.3 kB / 406.4 MB, free: 6.312 MB / 362.7 MB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002456/0.2549, allocations: 146.7 kB / 406.5 MB, free: 6.172 MB / 362.7 MB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005178/0.2601, allocations: 2.871 MB / 409.4 MB, free: 3.285 MB / 362.7 MB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.335e-05/0.2601, allocations: 16 kB / 409.4 MB, free: 3.27 MB / 362.7 MB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.968e-06/0.2601, allocations: 3.938 kB / 409.4 MB, free: 3.266 MB / 362.7 MB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.229e-05/0.2601, allocations: 3.984 kB / 409.4 MB, free: 3.262 MB / 362.7 MB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006469/0.2666, allocations: 3.759 MB / 413.2 MB, free: 15.46 MB / 378.7 MB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.65e-06/0.2666, allocations: 0 / 413.2 MB, free: 15.46 MB / 378.7 MB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004839/0.2671, allocations: 167.7 kB / 413.3 MB, free: 15.29 MB / 378.7 MB
Notification: Performance of postOpt tearingSystem (simulation): time 0.004868/0.272, allocations: 2.093 MB / 415.4 MB, free: 13.2 MB / 378.7 MB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001412/0.2721, allocations: 31.98 kB / 415.4 MB, free: 13.17 MB / 378.7 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006736/0.2788, allocations: 4.219 MB / 419.7 MB, free: 8.863 MB / 378.7 MB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.713e-06/0.2788, allocations: 0 / 419.7 MB, free: 8.863 MB / 378.7 MB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006264/0.2851, allocations: 3.259 MB / 422.9 MB, free: 5.57 MB / 378.7 MB
Notification: Performance of postOpt removeConstants (simulation): time 0.000609/0.2857, allocations: 170.5 kB / 423.1 MB, free: 5.402 MB / 378.7 MB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001858/0.2859, allocations: 31.98 kB / 423.1 MB, free: 5.371 MB / 378.7 MB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006728/0.2866, allocations: 103.9 kB / 423.2 MB, free: 5.27 MB / 378.7 MB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000599/0.2872, allocations: 285.2 kB / 423.5 MB, free: 4.992 MB / 378.7 MB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.237e-05/0.2872, allocations: 24 kB / 423.5 MB, free: 4.969 MB / 378.7 MB
Notification: Performance of sorting global known variables: time 0.0006628/0.2879, allocations: 0.6218 MB / 424.1 MB, free: 4.348 MB / 378.7 MB
Notification: Performance of sort global known variables: time 1.3e-07/0.2879, allocations: 0 / 424.1 MB, free: 4.348 MB / 378.7 MB
Notification: Performance of remove unused functions: time 0.00122/0.2891, allocations: 0.5775 MB / 424.7 MB, free: 3.77 MB / 378.7 MB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 3
 * Number of states: 14 (gENCLS.omega,gENCLS.delta,gENCLS.eq,gENROE.w,gENROE.delta,gENROE.Epd,gENROE.Epq,gENROE.PSIkd,gENROE.PSIkq,eXAC1.imLimitedSimpleLag.state,eXAC1.imDerivativeLag.x,eXAC1.leadLag.TF.x_scaled[1],eXAC1.rotatingExciterWithDemagnetizationLimited.sISO.y,eXAC1.TransducerDelay.state)
 * Number of discrete variables: 2 ($whenCondition1,$whenCondition2)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (93):
 * Single equations (assignments): 92
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(26,23)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0003902/0.2895, allocations: 161.8 kB / 424.9 MB, free: 3.602 MB / 378.7 MB
Notification: Performance of simCode: created initialization part: time 0.003306/0.2928, allocations: 1.627 MB / 426.5 MB, free: 1.973 MB / 378.7 MB
Notification: Performance of simCode: created event and clocks part: time 1.788e-05/0.2928, allocations: 16 kB / 426.5 MB, free: 1.957 MB / 378.7 MB
Notification: Performance of simCode: created simulation system equations: time 0.002218/0.2951, allocations: 1.274 MB / 427.8 MB, free: 0.6641 MB / 378.7 MB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007303/0.2958, allocations: 180.3 kB / 428 MB, free: 500 kB / 378.7 MB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003967/0.2998, allocations: 2.842 MB / 430.8 MB, free: 13.62 MB / 394.7 MB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000225/0.3, allocations: 299.7 kB / 431.1 MB, free: 13.31 MB / 394.7 MB
Notification: Performance of simCode: alias equations: time 0.000404/0.3004, allocations: 156.5 kB / 431.3 MB, free: 13.16 MB / 394.7 MB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003868/0.3008, allocations: 231.3 kB / 431.5 MB, free: 12.93 MB / 394.7 MB
Notification: Performance of SimCode: time 1.583e-06/0.3008, allocations: 0 / 431.5 MB, free: 12.93 MB / 394.7 MB
Notification: Performance of Templates: time 0.03938/0.3402, allocations: 33.99 MB / 465.5 MB, free: 11.1 MB / 426.7 MB
"
[Timeout remaining time 660]
make -j1 -f OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.makefile [Timeout 660]
(rm -f OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.pipe ; mkfifo OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.pipe ; head -c 1048576 < OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.pipe >> ../files/OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.sim & ./OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1 -abortSlowSimulation -alarm=240  -lv LOG_STATS > OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.EXAC1.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 3.896973493974656]