./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ae1cb2a02ea6ff03ecf7e1e354f95c8ed004ac862897f1284552a880f81cfed --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:54:11,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:54:11,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:54:11,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:54:11,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:54:11,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:54:11,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:54:11,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:54:11,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:54:11,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:54:11,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:54:11,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:54:11,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:54:11,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:54:11,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:54:11,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:54:11,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:54:11,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:54:11,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:54:11,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:54:11,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:54:11,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:54:11,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:54:11,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:54:11,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:54:11,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:54:11,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:54:11,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:54:11,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:54:11,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:54:11,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:54:11,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:54:11,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:54:11,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:54:11,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:54:11,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:54:11,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:54:11,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:54:11,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:54:11,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:54:11,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:54:11,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:54:11,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:54:11,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:54:11,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:54:11,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:54:11,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:54:11,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:54:11,689 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:54:11,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:54:11,690 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:54:11,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:54:11,690 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:54:11,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:54:11,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:54:11,691 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:54:11,691 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:54:11,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:54:11,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:54:11,692 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:54:11,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:54:11,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:54:11,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:54:11,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:54:11,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:54:11,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:54:11,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:54:11,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:54:11,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:54:11,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:54:11,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:54:11,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:54:11,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:54:11,697 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:54:11,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:54:11,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:54:11,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:54:11,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:54:11,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:54:11,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:54:11,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ae1cb2a02ea6ff03ecf7e1e354f95c8ed004ac862897f1284552a880f81cfed [2022-11-19 06:54:11,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:54:11,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:54:11,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:54:11,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:54:11,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:54:11,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i [2022-11-19 06:54:12,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/20664e812/c452b4fae2a54dd294c717dfebfc7cfc/FLAGd659189a4 [2022-11-19 06:54:13,351 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:54:13,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i [2022-11-19 06:54:13,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/20664e812/c452b4fae2a54dd294c717dfebfc7cfc/FLAGd659189a4 [2022-11-19 06:54:13,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/20664e812/c452b4fae2a54dd294c717dfebfc7cfc [2022-11-19 06:54:13,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:54:13,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:54:13,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:54:13,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:54:13,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:54:13,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:54:13" (1/1) ... [2022-11-19 06:54:13,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59766cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:13, skipping insertion in model container [2022-11-19 06:54:13,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:54:13" (1/1) ... [2022-11-19 06:54:13,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:54:14,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:54:17,922 ERROR L326 MainTranslator]: Unsupported Syntax: encountered a call to a var args function, var args are not supported at the moment: b43legacywarn [2022-11-19 06:54:17,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fa163d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:17, skipping insertion in model container [2022-11-19 06:54:17,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:54:17,924 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 06:54:17,926 INFO L158 Benchmark]: Toolchain (without parser) took 4033.57ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 98.3MB in the beginning and 86.9MB in the end (delta: 11.4MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. [2022-11-19 06:54:17,927 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:54:17,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4031.22ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 97.7MB in the beginning and 86.9MB in the end (delta: 10.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2022-11-19 06:54:17,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4031.22ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 97.7MB in the beginning and 86.9MB in the end (delta: 10.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 9731]: Unsupported Syntax encountered a call to a var args function, var args are not supported at the moment: b43legacywarn RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ae1cb2a02ea6ff03ecf7e1e354f95c8ed004ac862897f1284552a880f81cfed --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:54:20,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:54:20,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:54:20,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:54:20,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:54:20,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:54:20,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:54:20,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:54:20,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:54:20,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:54:20,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:54:20,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:54:20,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:54:20,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:54:20,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:54:20,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:54:20,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:54:20,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:54:20,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:54:20,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:54:20,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:54:20,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:54:20,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:54:20,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:54:20,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:54:20,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:54:20,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:54:20,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:54:20,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:54:20,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:54:20,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:54:20,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:54:20,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:54:20,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:54:20,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:54:20,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:54:20,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:54:20,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:54:20,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:54:20,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:54:20,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:54:20,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:54:20,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:54:20,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:54:20,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:54:20,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:54:20,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:54:20,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:54:20,173 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:54:20,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:54:20,174 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:54:20,174 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:54:20,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:54:20,175 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:54:20,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:54:20,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:54:20,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:54:20,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:54:20,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:54:20,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:54:20,178 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:54:20,178 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:54:20,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:54:20,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:54:20,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:54:20,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:54:20,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:54:20,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:54:20,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:54:20,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:54:20,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:54:20,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:54:20,180 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:54:20,180 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:54:20,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:54:20,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:54:20,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:54:20,181 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ae1cb2a02ea6ff03ecf7e1e354f95c8ed004ac862897f1284552a880f81cfed [2022-11-19 06:54:20,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:54:20,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:54:20,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:54:20,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:54:20,673 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:54:20,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i [2022-11-19 06:54:20,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/79e7fbe3b/b8e3ad94c1f949c28d2497ecda2b199d/FLAGb184fc919 [2022-11-19 06:54:22,268 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:54:22,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-b43legacy-b43legacy.cil.i [2022-11-19 06:54:22,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/79e7fbe3b/b8e3ad94c1f949c28d2497ecda2b199d/FLAGb184fc919 [2022-11-19 06:54:22,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5fe785-eb29-45ce-9a62-74a0bdaa9e89/bin/utaipan-I9t0OCRTmS/data/79e7fbe3b/b8e3ad94c1f949c28d2497ecda2b199d [2022-11-19 06:54:22,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:54:22,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:54:22,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:54:22,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:54:22,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:54:22,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:54:22" (1/1) ... [2022-11-19 06:54:22,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c46af18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:22, skipping insertion in model container [2022-11-19 06:54:22,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:54:22" (1/1) ... [2022-11-19 06:54:22,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:54:23,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:54:26,345 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: cannot determine size of incomplete type at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructSizeTValueAndOffsets_StructAndUnion(TypeSizeAndOffsetComputer.java:260) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.computeSize(TypeSizeAndOffsetComputer.java:204) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructBytesizeExpression(TypeSizeAndOffsetComputer.java:122) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1026) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:675) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1468) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1412) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1086) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1086) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1086) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1488) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3308) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2387) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:54:26,354 INFO L158 Benchmark]: Toolchain (without parser) took 3694.30ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 31.8MB in the beginning and 77.4MB in the end (delta: -45.6MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-11-19 06:54:26,355 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 53.4MB in the end (delta: 57.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:54:26,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3691.12ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 31.6MB in the beginning and 77.4MB in the end (delta: -45.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-11-19 06:54:26,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 53.4MB in the end (delta: 57.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3691.12ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 31.6MB in the beginning and 77.4MB in the end (delta: -45.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: cannot determine size of incomplete type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: cannot determine size of incomplete type: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructSizeTValueAndOffsets_StructAndUnion(TypeSizeAndOffsetComputer.java:260) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: cannot determine size of incomplete type