java -ea -Xmx4000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/C-BPP.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--nfs--nfsv2.ko_true-unreach-call.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-bdc35bb [2018-10-29 10:03:50,630 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-29 10:03:50,636 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-29 10:03:50,678 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-29 10:03:50,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-29 10:03:50,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-29 10:03:50,681 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-29 10:03:50,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-29 10:03:50,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-29 10:03:50,691 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-29 10:03:50,702 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-29 10:03:50,703 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-29 10:03:50,707 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-29 10:03:50,708 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-29 10:03:50,710 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-29 10:03:50,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-29 10:03:50,717 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-29 10:03:50,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-29 10:03:50,734 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-29 10:03:50,736 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-29 10:03:50,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-29 10:03:50,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-29 10:03:50,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-29 10:03:50,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-29 10:03:50,779 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-29 10:03:50,780 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-29 10:03:50,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-29 10:03:50,783 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2018-10-29 10:03:50,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-29 10:03:50,829 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-29 10:03:50,834 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-29 10:03:50,834 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-29 10:03:50,837 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-29 10:03:50,837 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-29 10:03:50,837 INFO L133 SettingsManager]: * Use SBE=true [2018-10-29 10:03:50,838 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-29 10:03:50,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-29 10:03:50,838 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-29 10:03:50,838 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-29 10:03:50,838 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-29 10:03:50,839 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-29 10:03:50,842 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-29 10:03:50,842 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-29 10:03:50,844 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-29 10:03:50,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-29 10:03:50,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-29 10:03:50,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-29 10:03:50,845 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-29 10:03:50,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-29 10:03:50,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-29 10:03:50,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-29 10:03:50,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-29 10:03:50,848 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-29 10:03:50,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-29 10:03:50,848 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-29 10:03:50,848 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-29 10:03:50,849 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-29 10:03:50,849 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-29 10:03:50,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-29 10:03:51,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-29 10:03:51,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-29 10:03:51,028 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-29 10:03:51,029 INFO L276 PluginConnector]: CDTParser initialized [2018-10-29 10:03:51,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--nfs--nfsv2.ko_true-unreach-call.cil.c [2018-10-29 10:03:51,199 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925c0915d/865ca57194124421a696331cbacc3c89/FLAGb24fb5988 [2018-10-29 10:03:53,881 INFO L298 CDTParser]: Found 1 translation units. [2018-10-29 10:03:53,882 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--nfs--nfsv2.ko_true-unreach-call.cil.c [2018-10-29 10:03:54,144 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925c0915d/865ca57194124421a696331cbacc3c89/FLAGb24fb5988 [2018-10-29 10:03:54,189 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925c0915d/865ca57194124421a696331cbacc3c89 [2018-10-29 10:03:54,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-29 10:03:54,220 INFO L131 ToolchainWalker]: Walking toolchain with 2 elements. [2018-10-29 10:03:54,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-29 10:03:54,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-29 10:03:54,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-29 10:03:54,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:03:54" (1/1) ... [2018-10-29 10:03:54,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccd8a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:03:54, skipping insertion in model container [2018-10-29 10:03:54,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:03:54" (1/1) ... [2018-10-29 10:03:54,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-29 10:03:55,232 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-29 10:04:47,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-29 10:04:48,429 INFO L189 MainTranslator]: Completed pre-run [2018-10-29 10:05:13,310 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-29 10:05:19,715 INFO L193 MainTranslator]: Completed translation [2018-10-29 10:05:19,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19 WrapperNode [2018-10-29 10:05:19,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-29 10:05:19,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-29 10:05:19,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-29 10:05:19,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-29 10:05:19,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:19,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:19,909 ERROR L1123 TypeChecker]: C: nfs_version2 [7982]: Undeclared identifier ~#nfs_version2~0 in IdentifierExpression[~#nfs_version2~0,GLOBAL] [2018-10-29 10:05:19,910 ERROR L1123 TypeChecker]: C: static struct nfs_subversion nfs_v2 = {& __this_module, & nfs_fs_type, & nfs_version2, & nfs_v2_clientops, & nfs_sops, 0, {0, 0}}; [7982-7983]: Wrong parameter type at index 0: CallStatement[false,[],write~$Pointer$,[IdentifierExpression[~#nfs_version2~0,GLOBAL],StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],base],FunctionApplication[~bvadd32,[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],offset],BitvecLiteral[16,32]]]]],BitvecLiteral[8,32]]] [2018-10-29 10:05:19,911 ERROR L1123 TypeChecker]: C: nfs_v2_clientops [7982]: Undeclared identifier ~#nfs_v2_clientops~0 in IdentifierExpression[~#nfs_v2_clientops~0,GLOBAL] [2018-10-29 10:05:19,911 ERROR L1123 TypeChecker]: C: static struct nfs_subversion nfs_v2 = {& __this_module, & nfs_fs_type, & nfs_version2, & nfs_v2_clientops, & nfs_sops, 0, {0, 0}}; [7982-7983]: Wrong parameter type at index 0: CallStatement[false,[],write~$Pointer$,[IdentifierExpression[~#nfs_v2_clientops~0,GLOBAL],StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],base],FunctionApplication[~bvadd32,[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],offset],BitvecLiteral[24,32]]]]],BitvecLiteral[8,32]]] [2018-10-29 10:05:20,120 ERROR L1123 TypeChecker]: C: init_user_ns [30568]: Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] [2018-10-29 10:05:20,122 ERROR L1123 TypeChecker]: C: make_kuid(& init_user_ns, tmp___4) [30568]: Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1498,]],make_kuid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],IdentifierExpression[~tmp___4~13,]]] [2018-10-29 10:05:20,123 ERROR L1123 TypeChecker]: C: init_user_ns [30585]: Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] [2018-10-29 10:05:20,123 ERROR L1123 TypeChecker]: C: make_kgid(& init_user_ns, tmp___8) [30585]: Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1502,]],make_kgid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],IdentifierExpression[~tmp___8~13,]]] [2018-10-29 10:05:20,124 ERROR L1123 TypeChecker]: C: init_user_ns [30720]: Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] [2018-10-29 10:05:20,124 ERROR L1123 TypeChecker]: C: from_kuid(& init_user_ns, attr->ia_uid) [30720]: Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1531,]],from_kuid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],StructConstructor[[val],[IdentifierExpression[#t~mem1530,]]]]] [2018-10-29 10:05:20,127 ERROR L1123 TypeChecker]: C: init_user_ns [30733]: Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] [2018-10-29 10:05:20,127 ERROR L1123 TypeChecker]: C: from_kgid(& init_user_ns, attr->ia_gid) [30733]: Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1535,]],from_kgid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],StructConstructor[[val],[IdentifierExpression[#t~mem1534,]]]]] [2018-10-29 10:05:20,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:20,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:20,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:21,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:21,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:05:19" (1/1) ... [2018-10-29 10:05:21,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-29 10:05:21,591 INFO L168 Benchmark]: Toolchain (without parser) took 87372.37 ms. Allocated memory is still 2.0 GB. Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 305.5 MB). Peak memory consumption was 305.5 MB. Max. memory is 3.9 GB. [2018-10-29 10:05:21,594 INFO L168 Benchmark]: CDTParser took 3.40 ms. Allocated memory is still 2.0 GB. Free memory is still 2.0 GB. There was no memory consumed. Max. memory is 3.9 GB. [2018-10-29 10:05:21,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 85492.26 ms. Allocated memory is still 2.0 GB. Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 125.1 MB). Peak memory consumption was 554.6 MB. Max. memory is 3.9 GB. [2018-10-29 10:05:21,596 INFO L168 Benchmark]: Boogie Preprocessor took 1866.31 ms. Allocated memory is still 2.0 GB. Free memory was 1.8 GB in the beginning and 1.6 GB in the end (delta: 180.4 MB). Peak memory consumption was 180.4 MB. Max. memory is 3.9 GB. [2018-10-29 10:05:21,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.40 ms. Allocated memory is still 2.0 GB. Free memory is still 2.0 GB. There was no memory consumed. Max. memory is 3.9 GB. * CACSL2BoogieTranslator took 85492.26 ms. Allocated memory is still 2.0 GB. Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 125.1 MB). Peak memory consumption was 554.6 MB. Max. memory is 3.9 GB. * Boogie Preprocessor took 1866.31 ms. Allocated memory is still 2.0 GB. Free memory was 1.8 GB in the beginning and 1.6 GB in the end (delta: 180.4 MB). Peak memory consumption was 180.4 MB. Max. memory is 3.9 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - TypeErrorResult [Line: 7982]: Type Error Undeclared identifier ~#nfs_version2~0 in IdentifierExpression[~#nfs_version2~0,GLOBAL] - TypeErrorResult [Line: 7982]: Type Error Wrong parameter type at index 0: CallStatement[false,[],write~$Pointer$,[IdentifierExpression[~#nfs_version2~0,GLOBAL],StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],base],FunctionApplication[~bvadd32,[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],offset],BitvecLiteral[16,32]]]]],BitvecLiteral[8,32]]] - TypeErrorResult [Line: 7982]: Type Error Undeclared identifier ~#nfs_v2_clientops~0 in IdentifierExpression[~#nfs_v2_clientops~0,GLOBAL] - TypeErrorResult [Line: 7982]: Type Error Wrong parameter type at index 0: CallStatement[false,[],write~$Pointer$,[IdentifierExpression[~#nfs_v2_clientops~0,GLOBAL],StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],base],FunctionApplication[~bvadd32,[StructAccessExpression[IdentifierExpression[~#nfs_v2~0,GLOBAL],offset],BitvecLiteral[24,32]]]]],BitvecLiteral[8,32]]] - TypeErrorResult [Line: 30568]: Type Error Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] - TypeErrorResult [Line: 30568]: Type Error Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1498,]],make_kuid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],IdentifierExpression[~tmp___4~13,]]] - TypeErrorResult [Line: 30585]: Type Error Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] - TypeErrorResult [Line: 30585]: Type Error Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1502,]],make_kgid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],IdentifierExpression[~tmp___8~13,]]] - TypeErrorResult [Line: 30720]: Type Error Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] - TypeErrorResult [Line: 30720]: Type Error Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1531,]],from_kuid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],StructConstructor[[val],[IdentifierExpression[#t~mem1530,]]]]] - TypeErrorResult [Line: 30733]: Type Error Undeclared identifier ~#init_user_ns~0 in IdentifierExpression[~#init_user_ns~0,GLOBAL] - TypeErrorResult [Line: 30733]: Type Error Wrong parameter type at index 0: CallStatement[false,[VariableLHS[#t~ret1535,]],from_kgid,[IdentifierExpression[~#init_user_ns~0,GLOBAL],StructConstructor[[val],[IdentifierExpression[#t~mem1534,]]]]] RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...