Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.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 0.00142/0.00142, allocations: 92.72 kB / 20.21 MB, free: 4.223 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 0.002201/0.002201, allocations: 157.7 kB / 23.51 MB, free: 0.9219 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 1.483/1.483, allocations: 177.1 MB / 203.9 MB, free: 5.605 MB / 186.7 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo): time 0.9786/0.9786, allocations: 115 MB / 375.3 MB, free: 7.562 MB / 346.7 MB
"
[Timeout remaining time 179]
Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/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(IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse,tolerance=1e-06,outputFormat="empty",numberOfIntervals=30000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse")
translateModel(IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse,tolerance=1e-06,outputFormat="empty",numberOfIntervals=30000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse") [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 2.124e-06/2.124e-06, allocations: 0 / 480.7 MB, free: 11.94 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 2.496e-05/2.708e-05, allocations: 2.312 kB / 480.7 MB, free: 11.94 MB / 410.7 MB
Notification: Performance of NFInst.instantiate(IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse): time 0.2696/0.2697, allocations: 174.5 MB / 0.6399 GB, free: 9.461 MB / 0.5573 GB
Notification: Performance of NFInst.instExpressions: time 0.3891/0.6588, allocations: 9.491 MB / 0.6492 GB, free: 10.53 MB / 0.5573 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002892/0.6617, allocations: 58.81 kB / 0.6492 GB, free: 10.53 MB / 0.5573 GB
Notification: Performance of NFTyping.typeComponents: time 0.002883/0.6646, allocations: 0.7454 MB / 0.6499 GB, free: 10.53 MB / 0.5573 GB
Notification: Performance of NFTyping.typeBindings: time 0.009011/0.6736, allocations: 2.617 MB / 0.6525 GB, free: 10.53 MB / 0.5573 GB
Notification: Performance of NFTyping.typeClassSections: time 0.005001/0.6786, allocations: 1.689 MB / 0.6541 GB, free: 10.5 MB / 0.5573 GB
Notification: Performance of NFFlatten.flatten: time 0.007165/0.6858, allocations: 4.469 MB / 0.6585 GB, free: 10.32 MB / 0.5573 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003344/0.6891, allocations: 1.651 MB / 0.6601 GB, free: 26.15 MB / 0.573 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.005171/0.6943, allocations: 2.436 MB / 0.6625 GB, free: 25.97 MB / 0.573 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002958/0.6972, allocations: 1.32 MB / 0.6638 GB, free: 25.85 MB / 0.573 GB
Notification: Performance of NFPackage.collectConstants: time 0.0005207/0.6977, allocations: 296.5 kB / 0.6641 GB, free: 25.85 MB / 0.573 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.004628/0.7024, allocations: 1.967 MB / 0.666 GB, free: 25.68 MB / 0.573 GB
Notification: Performance of NFScalarize.scalarize: time 0.0009844/0.7034, allocations: 0.9175 MB / 0.6669 GB, free: 25.57 MB / 0.573 GB
Notification: Performance of NFVerifyModel.verify: time 0.001565/0.7049, allocations: 0.9608 MB / 0.6678 GB, free: 25.48 MB / 0.573 GB
Notification: Performance of NFConvertDAE.convert: time 0.009297/0.7142, allocations: 4.766 MB / 0.6725 GB, free: 25.08 MB / 0.573 GB
Notification: Performance of FrontEnd - DAE generated: time 5.48e-06/0.7142, allocations: 1.031 kB / 0.6725 GB, free: 25.08 MB / 0.573 GB
Notification: Performance of FrontEnd: time 1.743e-06/0.7142, allocations: 0 / 0.6725 GB, free: 25.08 MB / 0.573 GB
Notification: Performance of Transformations before backend: time 0.0001296/0.7144, allocations: 0.9375 kB / 0.6725 GB, free: 25.08 MB / 0.573 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 526
 * Number of variables: 526
Notification: Performance of Generate backend data structure: time 0.009145/0.7235, allocations: 2.909 MB / 0.6753 GB, free: 23.82 MB / 0.573 GB
Notification: Performance of prepare preOptimizeDAE: time 4.434e-05/0.7235, allocations: 9 kB / 0.6753 GB, free: 23.82 MB / 0.573 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.007796/0.7313, allocations: 1.139 MB / 0.6764 GB, free: 23.57 MB / 0.573 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.004137/0.7355, allocations: 1.537 MB / 0.6779 GB, free: 23.18 MB / 0.573 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001982/0.7357, allocations: 160.7 kB / 0.6781 GB, free: 23.18 MB / 0.573 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006844/0.7364, allocations: 208.9 kB / 0.6783 GB, free: 23.17 MB / 0.573 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.006891/0.7433, allocations: 3.149 MB / 0.6814 GB, free: 22.52 MB / 0.573 GB
Notification: Performance of preOpt findStateOrder (simulation): time 4.88e-05/0.7433, allocations: 1.812 kB / 0.6814 GB, free: 22.52 MB / 0.573 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00028/0.7436, allocations: 82.22 kB / 0.6814 GB, free: 22.52 MB / 0.573 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001337/0.7437, allocations: 105.9 kB / 0.6816 GB, free: 22.52 MB / 0.573 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.006725/0.7504, allocations: 3.458 MB / 0.6849 GB, free: 22.48 MB / 0.573 GB
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 0.01303/0.7635, allocations: 6.119 MB / 0.6909 GB, free: 21.42 MB / 0.573 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.004859/0.7683, allocations: 2.758 MB / 0.6936 GB, free: 21.38 MB / 0.573 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.00223/0.7706, allocations: 1.317 MB / 0.6949 GB, free: 21.36 MB / 0.573 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0003463/0.7709, allocations: 94.7 kB / 0.695 GB, free: 21.36 MB / 0.573 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002947/0.7739, allocations: 1.822 MB / 0.6968 GB, free: 21.01 MB / 0.573 GB
Notification: Performance of pre-optimization done (n=224): time 5.52e-06/0.7739, allocations: 0.9688 kB / 0.6968 GB, free: 21.01 MB / 0.573 GB
Notification: Performance of matching and sorting (n=224): time 0.009337/0.7832, allocations: 4.048 MB / 0.7007 GB, free: 20.81 MB / 0.573 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002228/0.7834, allocations: 214.4 kB / 0.7009 GB, free: 20.59 MB / 0.573 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002071/0.7855, allocations: 1.102 MB / 0.702 GB, free: 20.41 MB / 0.573 GB
Notification: Performance of collectPreVariables (initialization): time 0.0003611/0.7859, allocations: 75.27 kB / 0.7021 GB, free: 20.38 MB / 0.573 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0008026/0.7867, allocations: 0.7962 MB / 0.7028 GB, free: 20 MB / 0.573 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0006316/0.7873, allocations: 0.7657 MB / 0.7036 GB, free: 19.5 MB / 0.573 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.000757/0.788, allocations: 410.1 kB / 0.704 GB, free: 19.47 MB / 0.573 GB
Notification: Performance of setup shared object (initialization): time 0.0001569/0.7882, allocations: 301.1 kB / 0.7043 GB, free: 19.17 MB / 0.573 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.002062/0.7903, allocations: 1.189 MB / 0.7054 GB, free: 19.16 MB / 0.573 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.002321/0.7926, allocations: 1.608 MB / 0.707 GB, free: 18.81 MB / 0.573 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.00425/0.7968, allocations: 2.576 MB / 0.7095 GB, free: 18.12 MB / 0.573 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.376e-06/0.7968, allocations: 2.75 kB / 0.7095 GB, free: 18.12 MB / 0.573 GB
Notification: Performance of matching and sorting (n=277) (initialization): time 0.006017/0.8029, allocations: 3.148 MB / 0.7126 GB, free: 16.84 MB / 0.573 GB
Notification: Performance of prepare postOptimizeDAE: time 2.136e-05/0.8029, allocations: 9.281 kB / 0.7126 GB, free: 16.84 MB / 0.573 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.246e-05/0.8029, allocations: 2.188 kB / 0.7126 GB, free: 16.84 MB / 0.573 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0009325/0.8038, allocations: 141.2 kB / 0.7127 GB, free: 16.82 MB / 0.573 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002656/0.8065, allocations: 486.6 kB / 0.7132 GB, free: 16.8 MB / 0.573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002236/0.8087, allocations: 1.51 MB / 0.7147 GB, free: 15.45 MB / 0.573 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002621/0.8113, allocations: 241.2 kB / 0.7149 GB, free: 15.33 MB / 0.573 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002404/0.8116, allocations: 83.98 kB / 0.715 GB, free: 15.31 MB / 0.573 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 8
 * Number of states: 0 ()
 * Number of discrete variables: 27 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.decAng.k,$PRE.weaDat.decAng.k,weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.k,$PRE.weaDat.eqnTim.k,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.k,$PRE.weaDat.conTim.k,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.k,$PRE.weaDat.conTimMin.k,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.k,$PRE.weaDat.locTim.k,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (275):
 * Single equations (assignments): 274
 * 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
   {(1,2)}
Notification: Performance of prepare postOptimizeDAE: time 0.001251/0.8128, allocations: 0.5484 MB / 0.7155 GB, free: 14.99 MB / 0.573 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006449/0.8135, allocations: 253.5 kB / 0.7158 GB, free: 14.87 MB / 0.573 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006131/0.8196, allocations: 3.205 MB / 0.7189 GB, free: 13.61 MB / 0.573 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.583e-05/0.8196, allocations: 22.59 kB / 0.7189 GB, free: 13.61 MB / 0.573 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 7.525e-06/0.8196, allocations: 1.031 kB / 0.7189 GB, free: 13.61 MB / 0.573 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.005216/0.8248, allocations: 2.966 MB / 0.7218 GB, free: 11.93 MB / 0.573 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01212/0.837, allocations: 5.836 MB / 0.7275 GB, free: 8.484 MB / 0.573 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.942e-05/0.837, allocations: 5.406 kB / 0.7275 GB, free: 8.484 MB / 0.573 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002851/0.8398, allocations: 420.1 kB / 0.7279 GB, free: 8.41 MB / 0.573 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.001106/0.8409, allocations: 186.9 kB / 0.7281 GB, free: 8.328 MB / 0.573 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0003462/0.8413, allocations: 65.55 kB / 0.7282 GB, free: 8.285 MB / 0.573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003766/0.845, allocations: 2.968 MB / 0.7311 GB, free: 5.48 MB / 0.573 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.911e-06/0.8451, allocations: 8.594 kB / 0.7311 GB, free: 5.48 MB / 0.573 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01206/0.8571, allocations: 4.924 MB / 0.7359 GB, free: 2.75 MB / 0.573 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.002346/0.8595, allocations: 0.5177 MB / 0.7364 GB, free: 2.375 MB / 0.573 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008976/0.8604, allocations: 57.36 kB / 0.7364 GB, free: 2.34 MB / 0.573 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002691/0.8631, allocations: 132.7 kB / 0.7366 GB, free: 2.277 MB / 0.573 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000517/0.8636, allocations: 171.5 kB / 0.7367 GB, free: 2.172 MB / 0.573 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002673/0.8638, allocations: 83.36 kB / 0.7368 GB, free: 2.145 MB / 0.573 GB
Notification: Performance of sorting global known variables: time 0.001595/0.8654, allocations: 0.7405 MB / 0.7375 GB, free: 1.723 MB / 0.573 GB
Notification: Performance of sort global known variables: time 8e-08/0.8654, allocations: 0 / 0.7375 GB, free: 1.723 MB / 0.573 GB
Notification: Performance of remove unused functions: time 0.002812/0.8682, allocations: 0.8065 MB / 0.7383 GB, free: 1.527 MB / 0.573 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 20
 * Number of states: 5 (simpleZone.volRoom.dynBal.medium.Xi[1],simpleZone.volRoom.dynBal.U,simpleZone.volRoom.dynBal.m,simpleZone.door.mExcAB,simpleZone.door.mExcBA)
 * Number of discrete variables: 15 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,weaDat.locTim.tNext,weaDat.locTim.k,weaDat.conTimMin.tNext,weaDat.conTimMin.k,weaDat.conTim.tNext,weaDat.conTim.k,weaDat.eqnTim.tNext,weaDat.eqnTim.k,weaDat.decAng.tNext,weaDat.decAng.k)
 * Number of discrete states: 10 (weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.locTim.tNext,weaDat.decAng.tNext,weaDat.conTimMin.tNext,weaDat.decAng.k,weaDat.eqnTim.k,weaDat.conTim.k,weaDat.conTimMin.k,weaDat.locTim.k)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (232):
 * Single equations (assignments): 220
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 10
 * 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): 1 system
   {(1,2,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(1,3)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.003057/0.8713, allocations: 0.7791 MB / 0.7391 GB, free: 1.27 MB / 0.573 GB
Notification: Performance of simCode: created initialization part: time 0.00689/0.8782, allocations: 2.807 MB / 0.7418 GB, free: 14.9 MB / 0.5886 GB
Notification: Performance of simCode: created event and clocks part: time 1.383e-05/0.8782, allocations: 8.188 kB / 0.7418 GB, free: 14.9 MB / 0.5886 GB
Notification: Performance of simCode: created simulation system equations: time 0.003723/0.8819, allocations: 1.626 MB / 0.7434 GB, free: 13.3 MB / 0.5886 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004216/0.8861, allocations: 0.7478 MB / 0.7441 GB, free: 12.63 MB / 0.5886 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01219/0.8983, allocations: 4.72 MB / 0.7487 GB, free: 7.875 MB / 0.5886 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002414/0.9008, allocations: 0.9827 MB / 0.7497 GB, free: 6.852 MB / 0.5886 GB
Notification: Performance of simCode: alias equations: time 0.005159/0.9059, allocations: 0.7758 MB / 0.7505 GB, free: 6.07 MB / 0.5886 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001571/0.9075, allocations: 200.4 kB / 0.7507 GB, free: 5.875 MB / 0.5886 GB
Notification: Performance of SimCode: time 1.643e-06/0.9075, allocations: 0 / 0.7507 GB, free: 5.875 MB / 0.5886 GB
Notification: Performance of Templates: time 0.07527/0.9828, allocations: 39.2 MB / 0.7889 GB, free: 15.5 MB / 0.6355 GB
"
[Timeout remaining time 659]
make -j1 -f IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.makefile [Timeout 660]
(rm -f IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.pipe ; mkfifo IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.pipe >> ../files/IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.sim & ./IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Experimental.Benchmarks.AirFlow.Examples.ZoneStepResponse.pipe 2>&1) [Timeout 480]
[Calling sys.exit(0), Time elapsed: 8.333170913043432]