Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag.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 0.001749/0.001749, allocations: 99.64 kB / 18.94 MB, free: 2.551 MB / 14.72 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 1.492/1.492, allocations: 230.6 MB / 252.7 MB, free: 8.09 MB / 206.1 MB
"
[Timeout remaining time 178]
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 0.001724/0.001724, allocations: 219.4 kB / 309.2 MB, free: 2.945 MB / 238.1 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo): time 0.5949/0.5949, allocations: 107.2 MB / 472.8 MB, free: 4.508 MB / 334.1 MB
"
[Timeout remaining time 179]
Using package OpenIPSL with version 3.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/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 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 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: "" <> buildModelFMU(OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag,fileNamePrefix="OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryImag",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag,fileNamePrefix="OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryImag",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660]
"Notification: OpenIPSL requested package Complex of version 4.0.0. Complex 4.1.0 is used instead which states that it is fully compatible without conversion script needed.
Notification: OpenIPSL requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed.
Notification: Performance of FrontEnd - loaded program: time 0.002648/0.002648, allocations: 91.86 kB / 0.6331 GB, free: 4.977 MB / 430.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.4574/0.46, allocations: 80.13 MB / 0.7113 GB, free: 4.098 MB / 494.1 MB
Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag): time 0.005576/0.4656, allocations: 5.457 MB / 0.7166 GB, free: 412 kB / 494.1 MB
Notification: Performance of NFInst.instExpressions: time 0.003989/0.4696, allocations: 1.746 MB / 0.7183 GB, free: 15.19 MB / 0.4981 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0007389/0.4703, allocations: 10.66 kB / 0.7184 GB, free: 15.19 MB / 0.4981 GB
Notification: Performance of NFTyping.typeComponents: time 0.0006642/0.471, allocations: 228.9 kB / 0.7186 GB, free: 15.07 MB / 0.4981 GB
Notification: Performance of NFTyping.typeBindings: time 0.001696/0.4727, allocations: 0.5854 MB / 0.7191 GB, free: 14.66 MB / 0.4981 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001763/0.4744, allocations: 0.7128 MB / 0.7198 GB, free: 14.29 MB / 0.4981 GB
Notification: Performance of NFFlatten.flatten: time 0.002097/0.4765, allocations: 1.37 MB / 0.7212 GB, free: 13.61 MB / 0.4981 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0003981/0.4769, allocations: 197.3 kB / 0.7214 GB, free: 13.5 MB / 0.4981 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0008962/0.4778, allocations: 0.5719 MB / 0.7219 GB, free: 13.22 MB / 0.4981 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0009061/0.4787, allocations: 0.6461 MB / 0.7226 GB, free: 12.94 MB / 0.4981 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001534/0.4789, allocations: 107.2 kB / 0.7227 GB, free: 12.94 MB / 0.4981 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0004818/0.4794, allocations: 211.8 kB / 0.7229 GB, free: 12.91 MB / 0.4981 GB
Notification: Performance of NFScalarize.scalarize: time 0.0002875/0.4797, allocations: 276.1 kB / 0.7231 GB, free: 12.73 MB / 0.4981 GB
Notification: Performance of NFVerifyModel.verify: time 0.0004943/0.4802, allocations: 0.4896 MB / 0.7236 GB, free: 12.44 MB / 0.4981 GB
Notification: Performance of NFConvertDAE.convert: time 0.001847/0.482, allocations: 1.478 MB / 0.725 GB, free: 11.77 MB / 0.4981 GB
Notification: Performance of FrontEnd - DAE generated: time 4.117e-06/0.482, allocations: 0 / 0.725 GB, free: 11.77 MB / 0.4981 GB
Notification: Performance of FrontEnd: time 1.723e-06/0.482, allocations: 0 / 0.725 GB, free: 11.77 MB / 0.4981 GB
Notification: Performance of Transformations before backend: time 2.498e-05/0.482, allocations: 6.109 kB / 0.7251 GB, free: 11.76 MB / 0.4981 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 176
 * Number of variables: 176
Notification: Performance of Generate backend data structure: time 0.009151/0.4912, allocations: 2.487 MB / 0.7275 GB, free: 10.7 MB / 0.4981 GB
Notification: Performance of prepare preOptimizeDAE: time 5.371e-05/0.4912, allocations: 9.719 kB / 0.7275 GB, free: 10.7 MB / 0.4981 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001901/0.4914, allocations: 123.3 kB / 0.7276 GB, free: 10.61 MB / 0.4981 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004968/0.4964, allocations: 0.6814 MB / 0.7283 GB, free: 10.46 MB / 0.4981 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001588/0.498, allocations: 0.6799 MB / 0.7289 GB, free: 9.977 MB / 0.4981 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000501/0.4985, allocations: 451 kB / 0.7294 GB, free: 9.535 MB / 0.4981 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001721/0.4987, allocations: 73.62 kB / 0.7294 GB, free: 9.508 MB / 0.4981 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.00272/0.5014, allocations: 1.132 MB / 0.7305 GB, free: 9.09 MB / 0.4981 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.898e-05/0.5014, allocations: 0 / 0.7305 GB, free: 9.09 MB / 0.4981 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.69e-05/0.5015, allocations: 26.03 kB / 0.7306 GB, free: 9.07 MB / 0.4981 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.146e-05/0.5015, allocations: 16.66 kB / 0.7306 GB, free: 9.07 MB / 0.4981 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002745/0.5043, allocations: 1.093 MB / 0.7317 GB, free: 8.711 MB / 0.4981 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 0.006551/0.5108, allocations: 2.644 MB / 0.7342 GB, free: 6.984 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.007509/0.5183, allocations: 1.916 MB / 0.7361 GB, free: 6.125 MB / 0.4981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001879/0.5202, allocations: 0.678 MB / 0.7368 GB, free: 5.781 MB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.000115/0.5203, allocations: 11.81 kB / 0.7368 GB, free: 5.777 MB / 0.4981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.034e-05/0.5204, allocations: 47.31 kB / 0.7368 GB, free: 5.727 MB / 0.4981 GB
Notification: Performance of pre-optimization done (n=89): time 2.895e-06/0.5204, allocations: 0 / 0.7368 GB, free: 5.727 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=89): time 0.03002/0.5504, allocations: 6.941 MB / 0.7436 GB, free: 2.375 MB / 0.4981 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 7.339e-05/0.5505, allocations: 87.95 kB / 0.7437 GB, free: 2.277 MB / 0.4981 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001448/0.5519, allocations: 0.8473 MB / 0.7445 GB, free: 1.789 MB / 0.4981 GB
Notification: Performance of collectPreVariables (initialization): time 0.000252/0.5522, allocations: 41.02 kB / 0.7446 GB, free: 1.746 MB / 0.4981 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0004301/0.5526, allocations: 466 kB / 0.745 GB, free: 1.336 MB / 0.4981 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0004761/0.5531, allocations: 332.3 kB / 0.7453 GB, free: 1.047 MB / 0.4981 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003596/0.5534, allocations: 153.8 kB / 0.7455 GB, free: 0.9531 MB / 0.4981 GB
Notification: Performance of setup shared object (initialization): time 0.0002006/0.5536, allocations: 343.2 kB / 0.7458 GB, free: 0.6211 MB / 0.4981 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001724/0.5553, allocations: 0.6591 MB / 0.7464 GB, free: 308 kB / 0.4981 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001864/0.5572, allocations: 0.806 MB / 0.7472 GB, free: 15.81 MB / 0.5137 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.00361/0.5608, allocations: 1.481 MB / 0.7487 GB, free: 14.99 MB / 0.5137 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.204e-06/0.5608, allocations: 1.562 kB / 0.7487 GB, free: 14.99 MB / 0.5137 GB
Notification: Performance of matching and sorting (n=118) (initialization): time 0.01628/0.5771, allocations: 4.279 MB / 0.7528 GB, free: 12.25 MB / 0.5137 GB
Notification: Performance of prepare postOptimizeDAE: time 2.768e-05/0.5771, allocations: 11.98 kB / 0.7529 GB, free: 12.24 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.217e-05/0.5771, allocations: 7.938 kB / 0.7529 GB, free: 12.23 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.008609/0.5858, allocations: 2.204 MB / 0.755 GB, free: 10.03 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008068/0.5866, allocations: 131.8 kB / 0.7551 GB, free: 9.898 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02948/0.616, allocations: 9.942 MB / 0.7649 GB, free: 15.84 MB / 0.5294 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001723/0.6178, allocations: 171.3 kB / 0.765 GB, free: 15.67 MB / 0.5294 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001032/0.6179, allocations: 31.98 kB / 0.765 GB, free: 15.64 MB / 0.5294 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 15
 * 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 (79):
 * Single equations (assignments): 77
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 1
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 1 system
   {(2,100.0%)}
 * Non-linear Jacobian (size): 0 systems
 * Without analytic Jacobian (size): 0 systems
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
   {(24,15)}
Notification: Performance of prepare postOptimizeDAE: time 0.0004869/0.6184, allocations: 230 kB / 0.7653 GB, free: 15.4 MB / 0.5294 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002494/0.6186, allocations: 119.2 kB / 0.7654 GB, free: 15.29 MB / 0.5294 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01562/0.6342, allocations: 4.174 MB / 0.7695 GB, free: 11.09 MB / 0.5294 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.55e-05/0.6342, allocations: 8 kB / 0.7695 GB, free: 11.09 MB / 0.5294 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 4.328e-06/0.6342, allocations: 0 / 0.7695 GB, free: 11.09 MB / 0.5294 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.776e-05/0.6343, allocations: 15.92 kB / 0.7695 GB, free: 11.07 MB / 0.5294 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01875/0.653, allocations: 5.249 MB / 0.7746 GB, free: 5.758 MB / 0.5294 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.475e-05/0.653, allocations: 4 kB / 0.7746 GB, free: 5.754 MB / 0.5294 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006001/0.6536, allocations: 91.83 kB / 0.7747 GB, free: 5.664 MB / 0.5294 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.008198/0.6618, allocations: 2.105 MB / 0.7767 GB, free: 3.551 MB / 0.5294 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002413/0.6621, allocations: 20 kB / 0.7768 GB, free: 3.531 MB / 0.5294 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02557/0.6876, allocations: 8.779 MB / 0.7853 GB, free: 10.63 MB / 0.545 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.963e-06/0.6876, allocations: 7.938 kB / 0.7853 GB, free: 10.62 MB / 0.545 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01796/0.7056, allocations: 5.207 MB / 0.7904 GB, free: 5.387 MB / 0.545 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0004677/0.7061, allocations: 127.1 kB / 0.7906 GB, free: 5.262 MB / 0.545 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002/0.7063, allocations: 16 kB / 0.7906 GB, free: 5.246 MB / 0.545 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001245/0.7075, allocations: 111.9 kB / 0.7907 GB, free: 5.137 MB / 0.545 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000793/0.7083, allocations: 240.6 kB / 0.7909 GB, free: 4.898 MB / 0.545 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.342e-05/0.7084, allocations: 27.98 kB / 0.7909 GB, free: 4.871 MB / 0.545 GB
Notification: Performance of sorting global known variables: time 0.0008891/0.7093, allocations: 0.575 MB / 0.7915 GB, free: 4.285 MB / 0.545 GB
Notification: Performance of sort global known variables: time 1e-07/0.7093, allocations: 4 kB / 0.7915 GB, free: 4.281 MB / 0.545 GB
Notification: Performance of remove unused functions: time 0.001491/0.7108, allocations: 419.7 kB / 0.7919 GB, free: 3.871 MB / 0.545 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 3 (gENCLS.delta,gENCLS.eq,gENCLS.omega)
 * 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 (52):
 * Single equations (assignments): 50
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 1
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 1 system
   {(2,100.0%)}
 * Non-linear Jacobian (size): 0 systems
 * Without analytic Jacobian (size): 0 systems
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
   {(24,15)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.01834/0.7291, allocations: 5.785 MB / 0.7975 GB, free: 14.05 MB / 0.5606 GB
Notification: Performance of simCode: created initialization part: time 0.008698/0.7378, allocations: 2.41 MB / 0.7999 GB, free: 11.62 MB / 0.5606 GB
Notification: Performance of simCode: created event and clocks part: time 5.099e-06/0.7378, allocations: 0 / 0.7999 GB, free: 11.62 MB / 0.5606 GB
Notification: Performance of simCode: created simulation system equations: time 0.006261/0.7441, allocations: 1.672 MB / 0.8015 GB, free: 9.93 MB / 0.5606 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001127/0.7452, allocations: 90.16 kB / 0.8016 GB, free: 9.844 MB / 0.5606 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.04458/0.7898, allocations: 15.21 MB / 0.8165 GB, free: 10.41 MB / 0.5762 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005287/0.7903, allocations: 476.1 kB / 0.8169 GB, free: 9.902 MB / 0.5762 GB
Notification: Performance of simCode: alias equations: time 0.000372/0.7907, allocations: 70.33 kB / 0.817 GB, free: 9.832 MB / 0.5762 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000585/0.7913, allocations: 407.3 kB / 0.8174 GB, free: 9.434 MB / 0.5762 GB
Notification: Performance of SimCode: time 9.92e-07/0.7913, allocations: 0 / 0.8174 GB, free: 9.434 MB / 0.5762 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08552/0.8768, allocations: 37.83 MB / 0.8543 GB, free: 3.773 MB / 0.6075 GB
Notification: Performance of buildModelFMU: Generate platform static: time 14.55/15.43, allocations: 8.047 kB / 0.8543 GB, free: 3.766 MB / 0.6075 GB
"
[Timeout remaining time 644]
(rm -f OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag.pipe ; mkfifo OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag.pipe ; head -c 1048576 < OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag.pipe >> ../files/OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator  --tempDir=temp_OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryImag_fmu --startTime=0 --stopTime=10 --stepSize=0.004 --timeout=50 --tolerance=1e-06 OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryImag.fmu > OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryImag.pipe 2>&1) [Timeout 52.5]
[Calling sys.exit(0), Time elapsed: 18.91864471323788]
Failed to read output from testmodel.py, exit status != 0:
15.574587850831449 15.591546918 15.106167617
Calling exit ...
<OMPython.OMCSessionZMQ object at 0x7f36fa8aefb0>