./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF --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 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:16:19,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:16:19,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:16:19,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:16:19,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:16:19,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:16:19,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:16:19,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:16:19,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:16:19,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:16:19,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:16:19,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:16:19,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:16:19,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:16:19,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:16:19,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:16:19,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:16:19,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:16:19,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:16:19,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:16:19,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:16:19,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:16:19,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:16:19,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:16:19,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:16:19,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:16:19,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:16:19,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:16:19,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:16:19,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:16:19,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:16:19,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:16:19,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:16:19,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:16:19,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:16:19,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:16:19,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:16:19,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:16:19,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:16:19,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:16:19,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:16:19,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:16:19,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:16:19,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:16:19,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:16:19,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:16:19,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:16:19,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:16:19,186 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:16:19,187 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:16:19,187 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:16:19,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:16:19,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:16:19,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:16:19,189 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:16:19,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:16:19,190 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:16:19,190 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:16:19,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:16:19,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:16:19,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:16:19,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:16:19,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:16:19,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:16:19,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:16:19,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:16:19,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:16:19,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:16:19,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:16:19,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:16:19,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:19,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:16:19,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:16:19,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:16:19,196 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:16:19,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:16:19,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:16:19,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:16:19,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:16:19,198 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2021-11-12 23:16:19,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:16:19,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:16:19,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:16:19,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:16:19,487 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:16:19,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-12 23:16:19,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/81896f79c/a0aa433b068045e6bced055dba425dc2/FLAGc4a7a10c9 [2021-11-12 23:16:20,649 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:16:20,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-12 23:16:20,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/81896f79c/a0aa433b068045e6bced055dba425dc2/FLAGc4a7a10c9 [2021-11-12 23:16:20,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/81896f79c/a0aa433b068045e6bced055dba425dc2 [2021-11-12 23:16:20,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:16:20,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:16:20,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:20,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:16:20,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:16:20,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:20" (1/1) ... [2021-11-12 23:16:20,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b938f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:20, skipping insertion in model container [2021-11-12 23:16:20,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:20" (1/1) ... [2021-11-12 23:16:20,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:16:21,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:22,779 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:16:23,233 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:16:23,234 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:16:23,358 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:16:24,213 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-12 23:16:24,217 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-12 23:16:24,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-12 23:16:24,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-12 23:16:24,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:24,313 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:16:24,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78202b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:24, skipping insertion in model container [2021-11-12 23:16:24,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:24,314 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:16:24,316 INFO L158 Benchmark]: Toolchain (without parser) took 3336.17ms. Allocated memory was 102.8MB in the beginning and 167.8MB in the end (delta: 65.0MB). Free memory was 66.3MB in the beginning and 116.1MB in the end (delta: -49.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2021-11-12 23:16:24,317 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 58.8MB in the beginning and 58.7MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:16:24,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3333.52ms. Allocated memory was 102.8MB in the beginning and 167.8MB in the end (delta: 65.0MB). Free memory was 66.3MB in the beginning and 116.1MB in the end (delta: -49.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2021-11-12 23:16:24,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 58.8MB in the beginning and 58.7MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3333.52ms. Allocated memory was 102.8MB in the beginning and 167.8MB in the end (delta: 65.0MB). Free memory was 66.3MB in the beginning and 116.1MB in the end (delta: -49.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7038]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF --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 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:16:26,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:16:26,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:16:26,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:16:26,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:16:26,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:16:26,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:16:26,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:16:26,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:16:26,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:16:26,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:16:26,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:16:26,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:16:26,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:16:26,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:16:26,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:16:26,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:16:26,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:16:26,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:16:26,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:16:26,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:16:26,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:16:26,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:16:26,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:16:26,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:16:26,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:16:26,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:16:26,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:16:26,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:16:26,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:16:26,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:16:26,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:16:26,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:16:26,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:16:26,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:16:26,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:16:26,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:16:26,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:16:26,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:16:26,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:16:26,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:16:26,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:16:26,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:16:26,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:16:26,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:16:26,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:16:26,711 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:16:26,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:16:26,711 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:16:26,711 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:16:26,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:16:26,712 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:16:26,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:16:26,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:16:26,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:16:26,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:16:26,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:16:26,715 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:16:26,716 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:16:26,716 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:16:26,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:16:26,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:16:26,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:16:26,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:16:26,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:16:26,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:16:26,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:26,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:16:26,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:16:26,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:16:26,718 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:16:26,719 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:16:26,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:16:26,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:16:26,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:16:26,719 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_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2021-11-12 23:16:27,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:16:27,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:16:27,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:16:27,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:16:27,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:16:27,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-12 23:16:27,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/4f84098db/f60a9ee6e1914a61b922fb177a7b438e/FLAGbfce3db89 [2021-11-12 23:16:28,203 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:16:28,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-12 23:16:28,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/4f84098db/f60a9ee6e1914a61b922fb177a7b438e/FLAGbfce3db89 [2021-11-12 23:16:28,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/data/4f84098db/f60a9ee6e1914a61b922fb177a7b438e [2021-11-12 23:16:28,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:16:28,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:16:28,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:28,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:16:28,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:16:28,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:28" (1/1) ... [2021-11-12 23:16:28,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d28b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:28, skipping insertion in model container [2021-11-12 23:16:28,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:28" (1/1) ... [2021-11-12 23:16:28,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:16:28,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:31,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-12 23:16:31,910 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-12 23:16:31,911 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-12 23:16:31,911 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-12 23:16:31,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:31,974 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:16:32,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:32,518 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-12 23:16:32,518 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-12 23:16:32,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-12 23:16:32,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-12 23:16:32,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:32,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:16:32,976 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2021-11-12 23:16:32,977 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2021-11-12 23:16:32,977 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2021-11-12 23:16:32,978 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2021-11-12 23:16:32,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:33,221 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:16:33,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33 WrapperNode [2021-11-12 23:16:33,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:33,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:33,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:16:33,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:16:33,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:33,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:33,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:33,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:16:33,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:16:33,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:16:33,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:33,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:33,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:33,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:34,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:34,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:34,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:34,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:16:34,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:16:34,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:16:34,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:16:34,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (1/1) ... [2021-11-12 23:16:34,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:34,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:34,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:16:34,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:16:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_set_bssid [2021-11-12 23:16:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_set_bssid [2021-11-12 23:16:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_start [2021-11-12 23:16:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_start [2021-11-12 23:16:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:16:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:16:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:16:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:16:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:16:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:16:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:16:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:16:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:16:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:16:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-12 23:16:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-12 23:16:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-12 23:16:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-12 23:16:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_al2210l [2021-11-12 23:16:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_al2210l [2021-11-12 23:16:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:16:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:16:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-12 23:16:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-12 23:16:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:16:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:16:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_adm8211_priv [2021-11-12 23:16:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_adm8211_priv [2021-11-12 23:16:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:16:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 23:16:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 23:16:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_set_channel [2021-11-12 23:16:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_set_channel [2021-11-12 23:16:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:16:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:16:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:16:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:16:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_sram [2021-11-12 23:16:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_sram [2021-11-12 23:16:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:16:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:16:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:16:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:16:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:16:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:16:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:16:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:16:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-12 23:16:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-12 23:16:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:16:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:16:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:16:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:16:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:16:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:16:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:16:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:16:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:16:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:16:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:16:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-12 23:16:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-12 23:16:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_max2820 [2021-11-12 23:16:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_max2820 [2021-11-12 23:16:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:16:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:16:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_bbp [2021-11-12 23:16:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_bbp [2021-11-12 23:16:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:16:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:16:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:16:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:16:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:16:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:16:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:16:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:16:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:16:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:16:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_stop [2021-11-12 23:16:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_stop [2021-11-12 23:16:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:16:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-12 23:16:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-12 23:16:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:16:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:16:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:16:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 23:16:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 23:16:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:16:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:16:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:16:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:16:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:16:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:16:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:16:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-12 23:16:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-12 23:16:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:16:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:16:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2021-11-12 23:16:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2021-11-12 23:16:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-12 23:16:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-12 23:16:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:16:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:16:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:16:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:16:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:16:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:16:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:16:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:16:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_resume [2021-11-12 23:16:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_resume [2021-11-12 23:16:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:16:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:16:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:16:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:16:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:16:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:16:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:16:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:16:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:16:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_adm8211_priv [2021-11-12 23:16:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_adm8211_priv [2021-11-12 23:16:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_remove [2021-11-12 23:16:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_remove [2021-11-12 23:16:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:16:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:16:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_update_mode [2021-11-12 23:16:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_update_mode [2021-11-12 23:16:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:16:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:16:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-12 23:16:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-12 23:16:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:16:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:16:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:16:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:16:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-12 23:16:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-12 23:16:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:16:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:16:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2958 [2021-11-12 23:16:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2958 [2021-11-12 23:16:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2948 [2021-11-12 23:16:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2948 [2021-11-12 23:16:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-12 23:16:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-12 23:16:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:16:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:16:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 23:16:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 23:16:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-12 23:16:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-12 23:16:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:16:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:16:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-12 23:16:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-12 23:16:44,535 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:17:30,203 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:17:30,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:17:30,313 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:17:30,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:17:30 BoogieIcfgContainer [2021-11-12 23:17:30,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:17:30,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:17:30,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:17:30,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:17:30,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:16:28" (1/3) ... [2021-11-12 23:17:30,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486be4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:17:30, skipping insertion in model container [2021-11-12 23:17:30,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:33" (2/3) ... [2021-11-12 23:17:30,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486be4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:17:30, skipping insertion in model container [2021-11-12 23:17:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:17:30" (3/3) ... [2021-11-12 23:17:30,327 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2021-11-12 23:17:30,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:17:30,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:17:30,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:17:30,411 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:17:30,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:17:30,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 2089 states, 1414 states have (on average 1.2595473833097595) internal successors, (1781), 1434 states have internal predecessors, (1781), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 597 states have call predecessors, (601), 601 states have call successors, (601) [2021-11-12 23:17:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-12 23:17:30,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:30,483 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:30,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:17:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:30,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1752275543, now seen corresponding path program 1 times [2021-11-12 23:17:30,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:30,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604140491] [2021-11-12 23:17:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:30,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:30,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:30,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:30,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:17:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:34,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:17:34,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2021-11-12 23:17:35,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-12 23:17:35,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:35,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604140491] [2021-11-12 23:17:35,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604140491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:35,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:35,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:17:35,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184438708] [2021-11-12 23:17:35,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:17:35,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:35,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:17:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:35,701 INFO L87 Difference]: Start difference. First operand has 2089 states, 1414 states have (on average 1.2595473833097595) internal successors, (1781), 1434 states have internal predecessors, (1781), 606 states have call successors, (606), 67 states have call predecessors, (606), 66 states have return successors, (601), 597 states have call predecessors, (601), 601 states have call successors, (601) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:17:37,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:17:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:53,574 INFO L93 Difference]: Finished difference Result 8161 states and 11783 transitions. [2021-11-12 23:17:53,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:17:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 134 [2021-11-12 23:17:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:53,750 INFO L225 Difference]: With dead ends: 8161 [2021-11-12 23:17:53,754 INFO L226 Difference]: Without dead ends: 6080 [2021-11-12 23:17:53,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:17:53,791 INFO L933 BasicCegarLoop]: 4152 mSDtfsCounter, 7509 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 1151 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16329.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7509 SdHoareTripleChecker+Valid, 8774 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.36ms SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17316.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:53,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7509 Valid, 8774 Invalid, 2355 Unknown, 0 Unchecked, 60.36ms Time], IncrementalHoareTripleChecker [1151 Valid, 1203 Invalid, 1 Unknown, 0 Unchecked, 17316.61ms Time] [2021-11-12 23:17:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6080 states. [2021-11-12 23:17:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 6054. [2021-11-12 23:17:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 4125 states have (on average 1.254060606060606) internal successors, (5173), 4180 states have internal predecessors, (5173), 1733 states have call successors, (1733), 194 states have call predecessors, (1733), 193 states have return successors, (1730), 1718 states have call predecessors, (1730), 1730 states have call successors, (1730) [2021-11-12 23:17:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 8636 transitions. [2021-11-12 23:17:54,446 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 8636 transitions. Word has length 134 [2021-11-12 23:17:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:54,453 INFO L470 AbstractCegarLoop]: Abstraction has 6054 states and 8636 transitions. [2021-11-12 23:17:54,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:17:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 8636 transitions. [2021-11-12 23:17:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-12 23:17:54,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:54,468 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:17:54,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:54,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:54,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:17:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 580703407, now seen corresponding path program 1 times [2021-11-12 23:17:54,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:54,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031854108] [2021-11-12 23:17:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:54,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:54,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:54,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:17:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:17:58,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2021-11-12 23:17:59,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-12 23:18:00,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:00,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031854108] [2021-11-12 23:18:00,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031854108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:00,007 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:18:00,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:18:00,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183362215] [2021-11-12 23:18:00,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:00,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:18:00,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:18:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:18:00,010 INFO L87 Difference]: Start difference. First operand 6054 states and 8636 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-12 23:18:02,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:18:15,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:15,287 INFO L93 Difference]: Finished difference Result 22635 states and 32348 transitions. [2021-11-12 23:18:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:18:15,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 148 [2021-11-12 23:18:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:15,567 INFO L225 Difference]: With dead ends: 22635 [2021-11-12 23:18:15,568 INFO L226 Difference]: Without dead ends: 16606 [2021-11-12 23:18:15,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:18:15,627 INFO L933 BasicCegarLoop]: 4047 mSDtfsCounter, 5164 mSDsluCounter, 7182 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13893.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 11229 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.97ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14468.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 11229 Invalid, 1111 Unknown, 0 Unchecked, 35.97ms Time], IncrementalHoareTripleChecker [15 Valid, 1095 Invalid, 1 Unknown, 0 Unchecked, 14468.24ms Time] [2021-11-12 23:18:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16606 states. [2021-11-12 23:18:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16606 to 16532. [2021-11-12 23:18:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16532 states, 11155 states have (on average 1.252084267144778) internal successors, (13967), 11328 states have internal predecessors, (13967), 4824 states have call successors, (4824), 557 states have call predecessors, (4824), 550 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:18:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16532 states to 16532 states and 23642 transitions. [2021-11-12 23:18:17,169 INFO L78 Accepts]: Start accepts. Automaton has 16532 states and 23642 transitions. Word has length 148 [2021-11-12 23:18:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:17,172 INFO L470 AbstractCegarLoop]: Abstraction has 16532 states and 23642 transitions. [2021-11-12 23:18:17,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-12 23:18:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 16532 states and 23642 transitions. [2021-11-12 23:18:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 23:18:17,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:17,186 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:17,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:17,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:17,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:18:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 770337783, now seen corresponding path program 1 times [2021-11-12 23:18:17,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:17,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552504066] [2021-11-12 23:18:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:17,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:17,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:17,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:18:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:21,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:18:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-12 23:18:24,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-12 23:18:26,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:26,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552504066] [2021-11-12 23:18:26,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552504066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:26,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:18:26,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:18:26,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737473344] [2021-11-12 23:18:26,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:26,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:18:26,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:26,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:18:26,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:18:26,245 INFO L87 Difference]: Start difference. First operand 16532 states and 23642 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-12 23:18:27,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:27,294 INFO L93 Difference]: Finished difference Result 16538 states and 23647 transitions. [2021-11-12 23:18:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 186 [2021-11-12 23:18:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:27,530 INFO L225 Difference]: With dead ends: 16538 [2021-11-12 23:18:27,530 INFO L226 Difference]: Without dead ends: 16536 [2021-11-12 23:18:27,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:18:27,546 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 2872 mSDsluCounter, 8845 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 11801 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 320.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:27,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2883 Valid, 11801 Invalid, 34 Unknown, 0 Unchecked, 25.67ms Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 320.20ms Time] [2021-11-12 23:18:27,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16536 states. [2021-11-12 23:18:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16536 to 16536. [2021-11-12 23:18:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16536 states, 11158 states have (on average 1.2520164904104678) internal successors, (13970), 11331 states have internal predecessors, (13970), 4824 states have call successors, (4824), 558 states have call predecessors, (4824), 551 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:18:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16536 states to 16536 states and 23645 transitions. [2021-11-12 23:18:28,773 INFO L78 Accepts]: Start accepts. Automaton has 16536 states and 23645 transitions. Word has length 186 [2021-11-12 23:18:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:28,774 INFO L470 AbstractCegarLoop]: Abstraction has 16536 states and 23645 transitions. [2021-11-12 23:18:28,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-12 23:18:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16536 states and 23645 transitions. [2021-11-12 23:18:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-12 23:18:28,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:28,783 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:28,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:28,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:28,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:18:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash 457063019, now seen corresponding path program 1 times [2021-11-12 23:18:28,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:29,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986604131] [2021-11-12 23:18:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:29,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:29,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:29,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:18:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:32,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:18:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-12 23:18:36,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-12 23:18:37,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:37,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986604131] [2021-11-12 23:18:37,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986604131] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:18:37,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:18:37,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:18:37,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275849798] [2021-11-12 23:18:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:37,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:18:37,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:18:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:18:37,739 INFO L87 Difference]: Start difference. First operand 16536 states and 23645 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:18:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:38,673 INFO L93 Difference]: Finished difference Result 16542 states and 23650 transitions. [2021-11-12 23:18:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 191 [2021-11-12 23:18:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:38,773 INFO L225 Difference]: With dead ends: 16542 [2021-11-12 23:18:38,774 INFO L226 Difference]: Without dead ends: 16540 [2021-11-12 23:18:38,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:18:38,789 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:38,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2908 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 12.78ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 167.48ms Time] [2021-11-12 23:18:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16540 states. [2021-11-12 23:18:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16540 to 16540. [2021-11-12 23:18:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16540 states, 11161 states have (on average 1.251948750111997) internal successors, (13973), 11334 states have internal predecessors, (13973), 4824 states have call successors, (4824), 559 states have call predecessors, (4824), 552 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:18:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16540 states to 16540 states and 23648 transitions. [2021-11-12 23:18:40,178 INFO L78 Accepts]: Start accepts. Automaton has 16540 states and 23648 transitions. Word has length 191 [2021-11-12 23:18:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:40,179 INFO L470 AbstractCegarLoop]: Abstraction has 16540 states and 23648 transitions. [2021-11-12 23:18:40,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:18:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 16540 states and 23648 transitions. [2021-11-12 23:18:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-12 23:18:40,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:40,188 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:40,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:40,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:40,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:18:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash -701862857, now seen corresponding path program 1 times [2021-11-12 23:18:40,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:40,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013886257] [2021-11-12 23:18:40,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:40,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:40,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:40,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:18:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2276 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:18:44,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-12 23:18:47,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-12 23:18:49,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:49,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013886257] [2021-11-12 23:18:49,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013886257] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:18:49,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:18:49,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:18:49,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034643767] [2021-11-12 23:18:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:49,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:18:49,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:18:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:18:49,255 INFO L87 Difference]: Start difference. First operand 16540 states and 23648 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:18:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:50,408 INFO L93 Difference]: Finished difference Result 16546 states and 23653 transitions. [2021-11-12 23:18:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 196 [2021-11-12 23:18:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:50,501 INFO L225 Difference]: With dead ends: 16546 [2021-11-12 23:18:50,501 INFO L226 Difference]: Without dead ends: 16544 [2021-11-12 23:18:50,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:18:50,514 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:50,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2907 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 20.36ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 183.28ms Time] [2021-11-12 23:18:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2021-11-12 23:18:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 16544. [2021-11-12 23:18:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16544 states, 11164 states have (on average 1.2518810462199927) internal successors, (13976), 11337 states have internal predecessors, (13976), 4824 states have call successors, (4824), 560 states have call predecessors, (4824), 553 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:18:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16544 states to 16544 states and 23651 transitions. [2021-11-12 23:18:51,937 INFO L78 Accepts]: Start accepts. Automaton has 16544 states and 23651 transitions. Word has length 196 [2021-11-12 23:18:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:51,937 INFO L470 AbstractCegarLoop]: Abstraction has 16544 states and 23651 transitions. [2021-11-12 23:18:51,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:18:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 16544 states and 23651 transitions. [2021-11-12 23:18:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-12 23:18:51,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:51,948 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:18:51,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:52,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:52,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:18:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash 141463979, now seen corresponding path program 1 times [2021-11-12 23:18:52,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:52,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311736745] [2021-11-12 23:18:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:52,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:52,169 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:52,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:18:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:55,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:18:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-12 23:18:59,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-12 23:19:01,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311736745] [2021-11-12 23:19:01,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311736745] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:19:01,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:19:01,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:19:01,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716061376] [2021-11-12 23:19:01,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:01,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:01,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:19:01,034 INFO L87 Difference]: Start difference. First operand 16544 states and 23651 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:19:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:02,022 INFO L93 Difference]: Finished difference Result 16550 states and 23656 transitions. [2021-11-12 23:19:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:19:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 201 [2021-11-12 23:19:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:02,108 INFO L225 Difference]: With dead ends: 16550 [2021-11-12 23:19:02,108 INFO L226 Difference]: Without dead ends: 16548 [2021-11-12 23:19:02,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:19:02,121 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:02,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2906 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 9.87ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 163.07ms Time] [2021-11-12 23:19:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16548 states. [2021-11-12 23:19:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16548 to 16548. [2021-11-12 23:19:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16548 states, 11167 states have (on average 1.2518133787051133) internal successors, (13979), 11340 states have internal predecessors, (13979), 4824 states have call successors, (4824), 561 states have call predecessors, (4824), 554 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:19:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16548 states to 16548 states and 23654 transitions. [2021-11-12 23:19:03,569 INFO L78 Accepts]: Start accepts. Automaton has 16548 states and 23654 transitions. Word has length 201 [2021-11-12 23:19:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:03,570 INFO L470 AbstractCegarLoop]: Abstraction has 16548 states and 23654 transitions. [2021-11-12 23:19:03,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:19:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 16548 states and 23654 transitions. [2021-11-12 23:19:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-12 23:19:03,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:03,582 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:03,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:03,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:03,797 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:19:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1979134857, now seen corresponding path program 1 times [2021-11-12 23:19:03,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:03,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543173972] [2021-11-12 23:19:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:03,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:03,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:03,803 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:03,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:19:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:07,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:07,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-12 23:19:11,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-12 23:19:12,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:12,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543173972] [2021-11-12 23:19:12,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543173972] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:19:12,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:19:12,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:19:12,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147114016] [2021-11-12 23:19:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:12,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:12,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:19:12,853 INFO L87 Difference]: Start difference. First operand 16548 states and 23654 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:19:13,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:13,986 INFO L93 Difference]: Finished difference Result 16554 states and 23659 transitions. [2021-11-12 23:19:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:19:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 206 [2021-11-12 23:19:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:14,070 INFO L225 Difference]: With dead ends: 16554 [2021-11-12 23:19:14,071 INFO L226 Difference]: Without dead ends: 16552 [2021-11-12 23:19:14,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:19:14,082 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:14,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2905 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 163.57ms Time] [2021-11-12 23:19:14,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16552 states. [2021-11-12 23:19:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16552 to 16552. [2021-11-12 23:19:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16552 states, 11170 states have (on average 1.2517457475380482) internal successors, (13982), 11343 states have internal predecessors, (13982), 4824 states have call successors, (4824), 562 states have call predecessors, (4824), 555 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:19:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16552 states to 16552 states and 23657 transitions. [2021-11-12 23:19:15,359 INFO L78 Accepts]: Start accepts. Automaton has 16552 states and 23657 transitions. Word has length 206 [2021-11-12 23:19:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:15,359 INFO L470 AbstractCegarLoop]: Abstraction has 16552 states and 23657 transitions. [2021-11-12 23:19:15,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:19:15,360 INFO L276 IsEmpty]: Start isEmpty. Operand 16552 states and 23657 transitions. [2021-11-12 23:19:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-12 23:19:15,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:15,373 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:15,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:15,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:15,597 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:19:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1308395755, now seen corresponding path program 1 times [2021-11-12 23:19:15,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:15,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095415706] [2021-11-12 23:19:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:15,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:15,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:15,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:15,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:19:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:19,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:19,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-11-12 23:19:23,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-11-12 23:19:24,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:24,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095415706] [2021-11-12 23:19:24,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095415706] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:19:24,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:19:24,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:19:24,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959372892] [2021-11-12 23:19:24,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:24,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:24,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:19:24,801 INFO L87 Difference]: Start difference. First operand 16552 states and 23657 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:19:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:26,011 INFO L93 Difference]: Finished difference Result 16558 states and 23662 transitions. [2021-11-12 23:19:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:19:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 211 [2021-11-12 23:19:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:26,077 INFO L225 Difference]: With dead ends: 16558 [2021-11-12 23:19:26,077 INFO L226 Difference]: Without dead ends: 16556 [2021-11-12 23:19:26,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:19:26,089 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2898 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2904 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:26,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2904 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 12.95ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 166.86ms Time] [2021-11-12 23:19:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16556 states. [2021-11-12 23:19:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16556 to 16556. [2021-11-12 23:19:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16556 states, 11173 states have (on average 1.2516781526895193) internal successors, (13985), 11346 states have internal predecessors, (13985), 4824 states have call successors, (4824), 563 states have call predecessors, (4824), 556 states have return successors, (4851), 4763 states have call predecessors, (4851), 4821 states have call successors, (4851) [2021-11-12 23:19:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16556 states to 16556 states and 23660 transitions. [2021-11-12 23:19:27,237 INFO L78 Accepts]: Start accepts. Automaton has 16556 states and 23660 transitions. Word has length 211 [2021-11-12 23:19:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:27,237 INFO L470 AbstractCegarLoop]: Abstraction has 16556 states and 23660 transitions. [2021-11-12 23:19:27,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:19:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 16556 states and 23660 transitions. [2021-11-12 23:19:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-12 23:19:27,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:27,251 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:27,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:27,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:27,473 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:19:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2103376644, now seen corresponding path program 1 times [2021-11-12 23:19:27,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:27,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775859643] [2021-11-12 23:19:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:27,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:27,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:27,478 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:27,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:19:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:31,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:19:31,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-11-12 23:19:34,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-12 23:19:38,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:38,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775859643] [2021-11-12 23:19:38,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775859643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:19:38,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [760376012] [2021-11-12 23:19:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:38,239 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:19:38,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:19:38,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:19:38,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:19:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:39,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:19:39,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-12 23:19:44,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-12 23:19:47,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [760376012] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:19:47,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:19:47,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:19:47,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526699967] [2021-11-12 23:19:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:47,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:19:47,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:19:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:19:47,285 INFO L87 Difference]: Start difference. First operand 16556 states and 23660 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:19:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:49,067 INFO L93 Difference]: Finished difference Result 16808 states and 23920 transitions. [2021-11-12 23:19:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:19:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 234 [2021-11-12 23:19:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:49,133 INFO L225 Difference]: With dead ends: 16808 [2021-11-12 23:19:49,134 INFO L226 Difference]: Without dead ends: 16806 [2021-11-12 23:19:49,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 907 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:19:49,144 INFO L933 BasicCegarLoop]: 2969 mSDtfsCounter, 2802 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2807 SdHoareTripleChecker+Valid, 9050 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:49,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2807 Valid, 9050 Invalid, 22 Unknown, 0 Unchecked, 11.09ms Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 175.31ms Time] [2021-11-12 23:19:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16806 states. [2021-11-12 23:19:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16806 to 16806. [2021-11-12 23:19:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16806 states, 11347 states have (on average 1.249933903234335) internal successors, (14183), 11520 states have internal predecessors, (14183), 4854 states have call successors, (4854), 609 states have call predecessors, (4854), 602 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-12 23:19:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16806 states to 16806 states and 23918 transitions. [2021-11-12 23:19:50,294 INFO L78 Accepts]: Start accepts. Automaton has 16806 states and 23918 transitions. Word has length 234 [2021-11-12 23:19:50,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:50,294 INFO L470 AbstractCegarLoop]: Abstraction has 16806 states and 23918 transitions. [2021-11-12 23:19:50,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:19:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 16806 states and 23918 transitions. [2021-11-12 23:19:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-12 23:19:50,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:50,306 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:50,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:50,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:50,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:50,721 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:19:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1727400710, now seen corresponding path program 1 times [2021-11-12 23:19:50,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:50,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986907311] [2021-11-12 23:19:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:50,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:50,725 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:50,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:19:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:19:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-11-12 23:19:58,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-11-12 23:20:01,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:01,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986907311] [2021-11-12 23:20:01,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986907311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:20:01,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176553402] [2021-11-12 23:20:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:01,423 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:20:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:20:01,424 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:20:01,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:20:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:02,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-12 23:20:08,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-12 23:20:10,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [176553402] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:10,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:20:10,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:20:10,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894837410] [2021-11-12 23:20:10,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:10,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:10,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:10,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:20:10,535 INFO L87 Difference]: Start difference. First operand 16806 states and 23918 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 23:20:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:12,058 INFO L93 Difference]: Finished difference Result 16812 states and 23923 transitions. [2021-11-12 23:20:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 239 [2021-11-12 23:20:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:12,117 INFO L225 Difference]: With dead ends: 16812 [2021-11-12 23:20:12,118 INFO L226 Difference]: Without dead ends: 16810 [2021-11-12 23:20:12,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:20:12,130 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:12,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2891 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 9.67ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 162.58ms Time] [2021-11-12 23:20:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16810 states. [2021-11-12 23:20:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16810 to 16810. [2021-11-12 23:20:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16810 states, 11350 states have (on average 1.2498678414096915) internal successors, (14186), 11523 states have internal predecessors, (14186), 4854 states have call successors, (4854), 610 states have call predecessors, (4854), 603 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-12 23:20:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16810 states to 16810 states and 23921 transitions. [2021-11-12 23:20:13,463 INFO L78 Accepts]: Start accepts. Automaton has 16810 states and 23921 transitions. Word has length 239 [2021-11-12 23:20:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:13,463 INFO L470 AbstractCegarLoop]: Abstraction has 16810 states and 23921 transitions. [2021-11-12 23:20:13,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 23:20:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 16810 states and 23921 transitions. [2021-11-12 23:20:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-12 23:20:13,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:13,472 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:13,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:20:13,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:13,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:20:13,880 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:20:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1040339708, now seen corresponding path program 1 times [2021-11-12 23:20:13,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:13,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067149121] [2021-11-12 23:20:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:13,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:13,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:13,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:13,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:20:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:17,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:20:17,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2021-11-12 23:20:21,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2021-11-12 23:20:24,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:24,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067149121] [2021-11-12 23:20:24,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067149121] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:20:24,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1138820116] [2021-11-12 23:20:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:24,670 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:20:24,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:20:24,672 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:20:24,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:20:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:26,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:26,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2021-11-12 23:20:31,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2021-11-12 23:20:33,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1138820116] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:33,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:20:33,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:20:33,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808955823] [2021-11-12 23:20:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:33,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:33,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:20:33,814 INFO L87 Difference]: Start difference. First operand 16810 states and 23921 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:20:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:35,467 INFO L93 Difference]: Finished difference Result 16816 states and 23926 transitions. [2021-11-12 23:20:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 244 [2021-11-12 23:20:35,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:35,527 INFO L225 Difference]: With dead ends: 16816 [2021-11-12 23:20:35,528 INFO L226 Difference]: Without dead ends: 16814 [2021-11-12 23:20:35,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 947 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:20:35,538 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:35,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2890 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 9.80ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 162.21ms Time] [2021-11-12 23:20:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16814 states. [2021-11-12 23:20:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16814 to 16814. [2021-11-12 23:20:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16814 states, 11353 states have (on average 1.2498018144983705) internal successors, (14189), 11526 states have internal predecessors, (14189), 4854 states have call successors, (4854), 611 states have call predecessors, (4854), 604 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-12 23:20:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16814 states to 16814 states and 23924 transitions. [2021-11-12 23:20:36,702 INFO L78 Accepts]: Start accepts. Automaton has 16814 states and 23924 transitions. Word has length 244 [2021-11-12 23:20:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:36,703 INFO L470 AbstractCegarLoop]: Abstraction has 16814 states and 23924 transitions. [2021-11-12 23:20:36,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:20:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16814 states and 23924 transitions. [2021-11-12 23:20:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-12 23:20:36,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:36,711 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:36,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-12 23:20:36,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:37,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:37,112 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:20:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1167086458, now seen corresponding path program 1 times [2021-11-12 23:20:37,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:37,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387989818] [2021-11-12 23:20:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:37,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:37,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:37,115 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:37,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:20:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:40,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:20:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-11-12 23:20:44,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2021-11-12 23:20:47,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:47,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387989818] [2021-11-12 23:20:47,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387989818] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:20:47,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1799806311] [2021-11-12 23:20:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:47,997 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:20:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:20:47,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:20:47,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:20:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:49,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:49,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-11-12 23:20:54,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-11-12 23:20:57,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1799806311] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:57,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:20:57,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:20:57,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862231678] [2021-11-12 23:20:57,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:57,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:57,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:57,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:20:57,219 INFO L87 Difference]: Start difference. First operand 16814 states and 23924 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:20:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:58,910 INFO L93 Difference]: Finished difference Result 16820 states and 23929 transitions. [2021-11-12 23:20:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 249 [2021-11-12 23:20:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:58,963 INFO L225 Difference]: With dead ends: 16820 [2021-11-12 23:20:58,963 INFO L226 Difference]: Without dead ends: 16818 [2021-11-12 23:20:58,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:20:58,974 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:58,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 9.73ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 161.33ms Time] [2021-11-12 23:20:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16818 states. [2021-11-12 23:21:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16818 to 16818. [2021-11-12 23:21:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16818 states, 11356 states have (on average 1.2497358224727018) internal successors, (14192), 11529 states have internal predecessors, (14192), 4854 states have call successors, (4854), 612 states have call predecessors, (4854), 605 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-12 23:21:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16818 states to 16818 states and 23927 transitions. [2021-11-12 23:21:00,214 INFO L78 Accepts]: Start accepts. Automaton has 16818 states and 23927 transitions. Word has length 249 [2021-11-12 23:21:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:00,215 INFO L470 AbstractCegarLoop]: Abstraction has 16818 states and 23927 transitions. [2021-11-12 23:21:00,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:21:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16818 states and 23927 transitions. [2021-11-12 23:21:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-12 23:21:00,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:00,223 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:00,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:00,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:00,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:00,624 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:21:00,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash -989081348, now seen corresponding path program 1 times [2021-11-12 23:21:00,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:00,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109056831] [2021-11-12 23:21:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:00,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:00,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:00,628 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:00,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:21:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:04,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:21:04,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-11-12 23:21:08,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-12 23:21:11,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:11,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109056831] [2021-11-12 23:21:11,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109056831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:21:11,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1221861475] [2021-11-12 23:21:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:11,590 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:21:11,591 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:21:11,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:21:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:13,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:21:13,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-12 23:21:18,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-12 23:21:20,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1221861475] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:20,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:21:20,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:21:20,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107069673] [2021-11-12 23:21:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:21:20,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:21:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:21:20,859 INFO L87 Difference]: Start difference. First operand 16818 states and 23927 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-12 23:21:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:22,608 INFO L93 Difference]: Finished difference Result 16824 states and 23932 transitions. [2021-11-12 23:21:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:21:22,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 254 [2021-11-12 23:21:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:22,660 INFO L225 Difference]: With dead ends: 16824 [2021-11-12 23:21:22,660 INFO L226 Difference]: Without dead ends: 16820 [2021-11-12 23:21:22,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1015 GetRequests, 987 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:21:22,670 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 2887 mSDsluCounter, 5899 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:22,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2888 Valid, 8858 Invalid, 20 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 160.99ms Time] [2021-11-12 23:21:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16820 states. [2021-11-12 23:21:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16820 to 16820. [2021-11-12 23:21:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16820 states, 11358 states have (on average 1.2496038034865293) internal successors, (14193), 11530 states have internal predecessors, (14193), 4854 states have call successors, (4854), 613 states have call predecessors, (4854), 605 states have return successors, (4881), 4793 states have call predecessors, (4881), 4851 states have call successors, (4881) [2021-11-12 23:21:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 23928 transitions. [2021-11-12 23:21:23,968 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 23928 transitions. Word has length 254 [2021-11-12 23:21:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:23,968 INFO L470 AbstractCegarLoop]: Abstraction has 16820 states and 23928 transitions. [2021-11-12 23:21:23,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-12 23:21:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 23928 transitions. [2021-11-12 23:21:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-12 23:21:23,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:23,977 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:24,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:24,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:24,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:24,378 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:21:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash 870260230, now seen corresponding path program 1 times [2021-11-12 23:21:24,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:24,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311555806] [2021-11-12 23:21:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:24,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:24,382 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:21:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:27,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:21:27,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 124 proven. 3 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-11-12 23:21:31,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 36 proven. 18 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2021-11-12 23:21:35,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:35,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311555806] [2021-11-12 23:21:35,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311555806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:21:35,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [720114038] [2021-11-12 23:21:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:35,338 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:21:35,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:21:35,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:21:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:36,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:21:36,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-12 23:21:42,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-12 23:21:44,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [720114038] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:44,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:21:44,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:21:44,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003682374] [2021-11-12 23:21:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:44,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:21:44,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:44,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:21:44,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:21:44,846 INFO L87 Difference]: Start difference. First operand 16820 states and 23928 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 23:21:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:46,606 INFO L93 Difference]: Finished difference Result 16820 states and 23928 transitions. [2021-11-12 23:21:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:21:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 259 [2021-11-12 23:21:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:46,660 INFO L225 Difference]: With dead ends: 16820 [2021-11-12 23:21:46,660 INFO L226 Difference]: Without dead ends: 16733 [2021-11-12 23:21:46,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:21:46,670 INFO L933 BasicCegarLoop]: 2957 mSDtfsCounter, 2883 mSDsluCounter, 5898 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 8855 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:46,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2883 Valid, 8855 Invalid, 15 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 118.52ms Time] [2021-11-12 23:21:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16733 states. [2021-11-12 23:21:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16733 to 16724. [2021-11-12 23:21:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16724 states, 11300 states have (on average 1.2500884955752212) internal successors, (14126), 11466 states have internal predecessors, (14126), 4828 states have call successors, (4828), 600 states have call predecessors, (4828), 594 states have return successors, (4858), 4774 states have call predecessors, (4858), 4828 states have call successors, (4858) [2021-11-12 23:21:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16724 states to 16724 states and 23812 transitions. [2021-11-12 23:21:48,197 INFO L78 Accepts]: Start accepts. Automaton has 16724 states and 23812 transitions. Word has length 259 [2021-11-12 23:21:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:48,197 INFO L470 AbstractCegarLoop]: Abstraction has 16724 states and 23812 transitions. [2021-11-12 23:21:48,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 23:21:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 16724 states and 23812 transitions. [2021-11-12 23:21:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-12 23:21:48,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:48,208 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:48,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-12 23:21:48,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:48,609 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:21:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash -841005746, now seen corresponding path program 1 times [2021-11-12 23:21:48,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:48,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535230605] [2021-11-12 23:21:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:48,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:48,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:48,617 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:48,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:21:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:52,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:21:52,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-12 23:21:54,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-11-12 23:21:55,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:55,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535230605] [2021-11-12 23:21:55,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535230605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:55,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:55,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:21:55,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387216594] [2021-11-12 23:21:55,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:55,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:21:55,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:55,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:21:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:21:55,656 INFO L87 Difference]: Start difference. First operand 16724 states and 23812 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-12 23:21:57,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:00,741 INFO L93 Difference]: Finished difference Result 47479 states and 67757 transitions. [2021-11-12 23:22:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:22:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 276 [2021-11-12 23:22:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:00,873 INFO L225 Difference]: With dead ends: 47479 [2021-11-12 23:22:00,873 INFO L226 Difference]: Without dead ends: 30780 [2021-11-12 23:22:00,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:22:00,982 INFO L933 BasicCegarLoop]: 3793 mSDtfsCounter, 2478 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2948.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.12ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3012.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:00,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2478 Valid, 6625 Invalid, 94 Unknown, 0 Unchecked, 8.12ms Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 3012.22ms Time] [2021-11-12 23:22:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2021-11-12 23:22:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 30758. [2021-11-12 23:22:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30758 states, 20627 states have (on average 1.2441945023512873) internal successors, (25664), 20952 states have internal predecessors, (25664), 9052 states have call successors, (9052), 1098 states have call predecessors, (9052), 1077 states have return successors, (9127), 8923 states have call predecessors, (9127), 9052 states have call successors, (9127) [2021-11-12 23:22:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30758 states to 30758 states and 43843 transitions. [2021-11-12 23:22:03,528 INFO L78 Accepts]: Start accepts. Automaton has 30758 states and 43843 transitions. Word has length 276 [2021-11-12 23:22:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:03,528 INFO L470 AbstractCegarLoop]: Abstraction has 30758 states and 43843 transitions. [2021-11-12 23:22:03,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-12 23:22:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 30758 states and 43843 transitions. [2021-11-12 23:22:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-12 23:22:03,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:03,558 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:03,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:03,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:03,759 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:22:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -255662222, now seen corresponding path program 1 times [2021-11-12 23:22:03,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:03,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34023868] [2021-11-12 23:22:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:03,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:03,764 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:03,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:22:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:08,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 3318 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:08,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 1269 trivial. 0 not checked. [2021-11-12 23:22:12,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2021-11-12 23:22:14,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:14,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34023868] [2021-11-12 23:22:14,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34023868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:14,936 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:14,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:14,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288288928] [2021-11-12 23:22:14,937 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:14,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:14,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:14,939 INFO L87 Difference]: Start difference. First operand 30758 states and 43843 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 4 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2021-11-12 23:22:17,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:32,250 INFO L93 Difference]: Finished difference Result 71501 states and 101334 transitions. [2021-11-12 23:22:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:32,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 4 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) Word has length 544 [2021-11-12 23:22:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:32,429 INFO L225 Difference]: With dead ends: 71501 [2021-11-12 23:22:32,429 INFO L226 Difference]: Without dead ends: 40768 [2021-11-12 23:22:32,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:32,657 INFO L933 BasicCegarLoop]: 5146 mSDtfsCounter, 4991 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 591 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13223.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 9218 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.62ms SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13995.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:32,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4991 Valid, 9218 Invalid, 1724 Unknown, 0 Unchecked, 21.62ms Time], IncrementalHoareTripleChecker [591 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 13995.47ms Time] [2021-11-12 23:22:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40768 states. [2021-11-12 23:22:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40768 to 36024. [2021-11-12 23:22:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36024 states, 24177 states have (on average 1.235926707201059) internal successors, (29881), 24544 states have internal predecessors, (29881), 10369 states have call successors, (10369), 1502 states have call predecessors, (10369), 1476 states have return successors, (10437), 10214 states have call predecessors, (10437), 10369 states have call successors, (10437) [2021-11-12 23:22:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36024 states to 36024 states and 50687 transitions. [2021-11-12 23:22:36,160 INFO L78 Accepts]: Start accepts. Automaton has 36024 states and 50687 transitions. Word has length 544 [2021-11-12 23:22:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:36,161 INFO L470 AbstractCegarLoop]: Abstraction has 36024 states and 50687 transitions. [2021-11-12 23:22:36,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 4 states have call successors, (92), 3 states have call predecessors, (92), 3 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2021-11-12 23:22:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 36024 states and 50687 transitions. [2021-11-12 23:22:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-11-12 23:22:36,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:36,196 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:36,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:36,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:36,401 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:22:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1686469508, now seen corresponding path program 1 times [2021-11-12 23:22:36,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:36,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339569907] [2021-11-12 23:22:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:36,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:36,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:36,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:22:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:41,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:41,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 898 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-11-12 23:22:46,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2021-11-12 23:22:48,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:48,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339569907] [2021-11-12 23:22:48,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339569907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:48,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:48,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:48,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624537761] [2021-11-12 23:22:48,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:48,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:48,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:48,755 INFO L87 Difference]: Start difference. First operand 36024 states and 50687 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (102), 4 states have call predecessors, (102), 4 states have call successors, (102) [2021-11-12 23:22:51,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:08,668 INFO L93 Difference]: Finished difference Result 100604 states and 141516 transitions. [2021-11-12 23:23:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:23:08,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (102), 4 states have call predecessors, (102), 4 states have call successors, (102) Word has length 622 [2021-11-12 23:23:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:09,093 INFO L225 Difference]: With dead ends: 100604 [2021-11-12 23:23:09,093 INFO L226 Difference]: Without dead ends: 64654 [2021-11-12 23:23:09,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:23:09,247 INFO L933 BasicCegarLoop]: 5666 mSDtfsCounter, 5062 mSDsluCounter, 3892 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 506 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14304.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5062 SdHoareTripleChecker+Valid, 9558 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.21ms SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15041.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:09,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5062 Valid, 9558 Invalid, 1761 Unknown, 0 Unchecked, 23.21ms Time], IncrementalHoareTripleChecker [506 Valid, 1254 Invalid, 1 Unknown, 0 Unchecked, 15041.69ms Time] [2021-11-12 23:23:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64654 states. [2021-11-12 23:23:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64654 to 64634. [2021-11-12 23:23:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64634 states, 43259 states have (on average 1.2300561732818605) internal successors, (53211), 43884 states have internal predecessors, (53211), 18697 states have call successors, (18697), 2714 states have call predecessors, (18697), 2676 states have return successors, (18801), 18434 states have call predecessors, (18801), 18697 states have call successors, (18801) [2021-11-12 23:23:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64634 states to 64634 states and 90709 transitions. [2021-11-12 23:23:15,890 INFO L78 Accepts]: Start accepts. Automaton has 64634 states and 90709 transitions. Word has length 622 [2021-11-12 23:23:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:15,905 INFO L470 AbstractCegarLoop]: Abstraction has 64634 states and 90709 transitions. [2021-11-12 23:23:15,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (102), 4 states have call predecessors, (102), 4 states have call successors, (102) [2021-11-12 23:23:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 64634 states and 90709 transitions. [2021-11-12 23:23:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2021-11-12 23:23:15,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:15,974 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 22, 22, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:16,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:16,201 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:23:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 914456673, now seen corresponding path program 1 times [2021-11-12 23:23:16,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:16,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663921483] [2021-11-12 23:23:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:16,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:16,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:16,207 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91503c1f-3125-497d-8e28-a67ddc6f94bf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:23:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:21,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 3592 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:23:21,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 1215 proven. 0 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2021-11-12 23:23:25,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2021-11-12 23:23:27,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:27,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663921483] [2021-11-12 23:23:27,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663921483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:27,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:27,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:23:27,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486085838] [2021-11-12 23:23:27,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:27,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:23:27,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:23:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:23:27,677 INFO L87 Difference]: Start difference. First operand 64634 states and 90709 transitions. Second operand has 8 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97)