./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/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_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:47:38,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:47:38,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:47:39,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:47:39,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:47:39,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:47:39,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:47:39,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:47:39,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:47:39,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:47:39,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:47:39,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:47:39,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:47:39,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:47:39,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:47:39,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:47:39,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:47:39,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:47:39,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:47:39,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:47:39,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:47:39,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:47:39,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:47:39,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:47:39,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:47:39,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:47:39,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:47:39,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:47:39,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:47:39,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:47:39,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:47:39,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:47:39,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:47:39,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:47:39,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:47:39,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:47:39,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:47:39,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:47:39,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:47:39,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:47:39,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:47:39,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:47:39,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:47:39,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:47:39,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:47:39,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:47:39,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:47:39,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:47:39,158 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:47:39,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:47:39,158 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:47:39,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:47:39,160 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:47:39,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:47:39,161 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:47:39,161 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:47:39,161 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:47:39,162 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:47:39,162 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:47:39,162 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:47:39,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:47:39,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:47:39,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:47:39,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:47:39,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:47:39,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:47:39,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:47:39,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:47:39,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:47:39,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:47:39,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:47:39,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:39,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:47:39,169 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:47:39,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:47:39,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:47:39,170 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:47:39,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:47:39,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:47:39,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:47:39,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265e49c3377c52c97dc3fc0a083b7daee63958176975b73f1e1d54651892cb04 [2022-11-03 03:47:39,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:47:39,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:47:39,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:47:39,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:47:39,556 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:47:39,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-03 03:47:39,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/data/83de1066f/bf4627a2a6ee42bd9b060e3413e345db/FLAG7c1410f26 [2022-11-03 03:47:40,953 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:47:40,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-03 03:47:41,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/data/83de1066f/bf4627a2a6ee42bd9b060e3413e345db/FLAG7c1410f26 [2022-11-03 03:47:41,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/data/83de1066f/bf4627a2a6ee42bd9b060e3413e345db [2022-11-03 03:47:41,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:47:41,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:47:41,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:41,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:47:41,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:47:41,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d98359b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:41, skipping insertion in model container [2022-11-03 03:47:41,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:41" (1/1) ... [2022-11-03 03:47:41,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:47:41,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:47:45,385 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2022-11-03 03:47:45,390 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2022-11-03 03:47:45,396 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2022-11-03 03:47:45,397 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2022-11-03 03:47:45,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:45,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:47:45,999 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[372884,372897] [2022-11-03 03:47:46,000 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373053,373066] [2022-11-03 03:47:46,001 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373220,373233] [2022-11-03 03:47:46,001 WARN L230 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_669293af-117f-4fca-afe6-00069ad9f6fa/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i[373388,373401] [2022-11-03 03:47:46,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:46,219 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:47:46,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46 WrapperNode [2022-11-03 03:47:46,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:46,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:46,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:47:46,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:47:46,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:46,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:46,779 INFO L138 Inliner]: procedures = 411, calls = 2777, calls flagged for inlining = 214, calls inlined = 198, statements flattened = 6084 [2022-11-03 03:47:46,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:46,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:47:46,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:47:46,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:47:46,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:46,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:46,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:46,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:47,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:47,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:47,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:47,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:47,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:47:47,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:47:47,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:47:47,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:47:47,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (1/1) ... [2022-11-03 03:47:47,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:47,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:47:47,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:47:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_set_bssid [2022-11-03 03:47:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_set_bssid [2022-11-03 03:47:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_start [2022-11-03 03:47:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_start [2022-11-03 03:47:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:47:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:47:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:47:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:47:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:47:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:47:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:47:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:47:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:47:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:47:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 03:47:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 03:47:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:47:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:47:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_al2210l [2022-11-03 03:47:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_al2210l [2022-11-03 03:47:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:47:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:47:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 03:47:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 03:47:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:47:47,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:47:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_adm8211_priv [2022-11-03 03:47:47,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_adm8211_priv [2022-11-03 03:47:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 03:47:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 03:47:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:47:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:47:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:47:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_set_channel [2022-11-03 03:47:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_set_channel [2022-11-03 03:47:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:47:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:47:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:47:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:47:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:47:47,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:47:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_sram [2022-11-03 03:47:47,418 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_sram [2022-11-03 03:47:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:47:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:47:47,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:47:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:47:47,421 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:47:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:47:47,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:47:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:47:47,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:47:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 03:47:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 03:47:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:47:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:47:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:47:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:47:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:47:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:47:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:47:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:47:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:47:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:47:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:47:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:47:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-03 03:47:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-03 03:47:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_max2820 [2022-11-03 03:47:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_max2820 [2022-11-03 03:47:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:47:47,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:47:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_write_bbp [2022-11-03 03:47:47,428 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_write_bbp [2022-11-03 03:47:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:47:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:47:47,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:47:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:47:47,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:47:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:47:47,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:47:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:47:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:47:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:47:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:47:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_stop [2022-11-03 03:47:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_stop [2022-11-03 03:47:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 03:47:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 03:47:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:47:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:47:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:47:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:47:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:47:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:47:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:47:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:47:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-03 03:47:47,436 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-03 03:47:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:47:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:47:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2022-11-03 03:47:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2022-11-03 03:47:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 03:47:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 03:47:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 03:47:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 03:47:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:47:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:47:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:47:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:47:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:47:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:47:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_resume [2022-11-03 03:47:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_resume [2022-11-03 03:47:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:47:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:47:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:47:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_adm8211_priv [2022-11-03 03:47:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_adm8211_priv [2022-11-03 03:47:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_remove [2022-11-03 03:47:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_remove [2022-11-03 03:47:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_update_mode [2022-11-03 03:47:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_update_mode [2022-11-03 03:47:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:47:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:47:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:47:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-03 03:47:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-03 03:47:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 03:47:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 03:47:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:47:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:47:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2958 [2022-11-03 03:47:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2958 [2022-11-03 03:47:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure adm8211_rf_write_syn_rfmd2948 [2022-11-03 03:47:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure adm8211_rf_write_syn_rfmd2948 [2022-11-03 03:47:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 03:47:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 03:47:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:47:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:47:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 03:47:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 03:47:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 03:47:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 03:47:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:47:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:47:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:47:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-03 03:47:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-03 03:47:48,649 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:47:48,652 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:47:50,351 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:47:59,788 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:48:00,042 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:48:02,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:48:02,687 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:48:02,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:02 BoogieIcfgContainer [2022-11-03 03:48:02,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:48:02,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:48:02,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:48:02,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:48:02,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:47:41" (1/3) ... [2022-11-03 03:48:02,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f5cd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:02, skipping insertion in model container [2022-11-03 03:48:02,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:46" (2/3) ... [2022-11-03 03:48:02,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f5cd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:02, skipping insertion in model container [2022-11-03 03:48:02,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:02" (3/3) ... [2022-11-03 03:48:02,717 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-adm8211.cil.i [2022-11-03 03:48:02,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:48:02,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:48:02,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:48:02,895 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@225ffc4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:48:02,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:48:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 1583 states, 908 states have (on average 1.2433920704845816) internal successors, (1129), 928 states have internal predecessors, (1129), 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) [2022-11-03 03:48:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 03:48:02,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:02,926 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:48:02,926 INFO L420 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)] === [2022-11-03 03:48:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash -952763240, now seen corresponding path program 1 times [2022-11-03 03:48:02,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:02,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537888391] [2022-11-03 03:48:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 03:48:04,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537888391] [2022-11-03 03:48:04,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537888391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:04,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:04,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014517980] [2022-11-03 03:48:04,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:04,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:04,142 INFO L87 Difference]: Start difference. First operand has 1583 states, 908 states have (on average 1.2433920704845816) internal successors, (1129), 928 states have internal predecessors, (1129), 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 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:48:06,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:08,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:13,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:48:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:15,937 INFO L93 Difference]: Finished difference Result 4526 states and 6708 transitions. [2022-11-03 03:48:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-11-03 03:48:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:15,998 INFO L225 Difference]: With dead ends: 4526 [2022-11-03 03:48:15,998 INFO L226 Difference]: Without dead ends: 2954 [2022-11-03 03:48:16,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:16,023 INFO L413 NwaCegarLoop]: 2736 mSDtfsCounter, 2051 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:16,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 4775 Invalid, 570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 562 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2022-11-03 03:48:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2022-11-03 03:48:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2948. [2022-11-03 03:48:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 1705 states have (on average 1.2398826979472142) internal successors, (2114), 1742 states have internal predecessors, (2114), 1113 states have call successors, (1113), 128 states have call predecessors, (1113), 127 states have return successors, (1110), 1101 states have call predecessors, (1110), 1110 states have call successors, (1110) [2022-11-03 03:48:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 4337 transitions. [2022-11-03 03:48:16,469 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 4337 transitions. Word has length 117 [2022-11-03 03:48:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:16,471 INFO L495 AbstractCegarLoop]: Abstraction has 2948 states and 4337 transitions. [2022-11-03 03:48:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 03:48:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 4337 transitions. [2022-11-03 03:48:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 03:48:16,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:16,479 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:48:16,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:48:16,480 INFO L420 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)] === [2022-11-03 03:48:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash 125176938, now seen corresponding path program 1 times [2022-11-03 03:48:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:16,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528768227] [2022-11-03 03:48:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 03:48:17,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528768227] [2022-11-03 03:48:17,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528768227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:17,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:17,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:17,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19540357] [2022-11-03 03:48:17,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:17,188 INFO L87 Difference]: Start difference. First operand 2948 states and 4337 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:48:19,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:21,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:23,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:48:27,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:29,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:31,123 INFO L93 Difference]: Finished difference Result 8352 states and 12307 transitions. [2022-11-03 03:48:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2022-11-03 03:48:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:31,195 INFO L225 Difference]: With dead ends: 8352 [2022-11-03 03:48:31,196 INFO L226 Difference]: Without dead ends: 5425 [2022-11-03 03:48:31,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:31,234 INFO L413 NwaCegarLoop]: 2660 mSDtfsCounter, 1878 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:31,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 4681 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 535 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 03:48:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2022-11-03 03:48:31,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 5398. [2022-11-03 03:48:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 3124 states have (on average 1.2416773367477594) internal successors, (3879), 3199 states have internal predecessors, (3879), 2036 states have call successors, (2036), 238 states have call predecessors, (2036), 235 states have return successors, (2043), 2006 states have call predecessors, (2043), 2033 states have call successors, (2043) [2022-11-03 03:48:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 7958 transitions. [2022-11-03 03:48:31,947 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 7958 transitions. Word has length 128 [2022-11-03 03:48:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:31,948 INFO L495 AbstractCegarLoop]: Abstraction has 5398 states and 7958 transitions. [2022-11-03 03:48:31,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 03:48:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 7958 transitions. [2022-11-03 03:48:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 03:48:31,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:31,960 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 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] [2022-11-03 03:48:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:48:31,961 INFO L420 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)] === [2022-11-03 03:48:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash -525769744, now seen corresponding path program 1 times [2022-11-03 03:48:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:31,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855963311] [2022-11-03 03:48:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:31,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-03 03:48:32,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855963311] [2022-11-03 03:48:32,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855963311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:32,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:32,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:48:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620141872] [2022-11-03 03:48:32,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:32,866 INFO L87 Difference]: Start difference. First operand 5398 states and 7958 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:48:35,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:40,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:48:44,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:48:46,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:49,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:51,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:54,099 INFO L93 Difference]: Finished difference Result 8085 states and 11902 transitions. [2022-11-03 03:48:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:48:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-11-03 03:48:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:54,197 INFO L225 Difference]: With dead ends: 8085 [2022-11-03 03:48:54,198 INFO L226 Difference]: Without dead ends: 8083 [2022-11-03 03:48:54,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:48:54,211 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 2078 mSDsluCounter, 8517 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 10437 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:54,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 10437 Invalid, 1230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1223 Invalid, 5 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 03:48:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8083 states. [2022-11-03 03:48:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8083 to 8075. [2022-11-03 03:48:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8075 states, 4671 states have (on average 1.2421323057161207) internal successors, (5802), 4784 states have internal predecessors, (5802), 3042 states have call successors, (3042), 364 states have call predecessors, (3042), 359 states have return successors, (3051), 2994 states have call predecessors, (3051), 3036 states have call successors, (3051) [2022-11-03 03:48:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8075 states to 8075 states and 11895 transitions. [2022-11-03 03:48:55,302 INFO L78 Accepts]: Start accepts. Automaton has 8075 states and 11895 transitions. Word has length 155 [2022-11-03 03:48:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:55,303 INFO L495 AbstractCegarLoop]: Abstraction has 8075 states and 11895 transitions. [2022-11-03 03:48:55,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:48:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 8075 states and 11895 transitions. [2022-11-03 03:48:55,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 03:48:55,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:55,310 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 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] [2022-11-03 03:48:55,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:48:55,310 INFO L420 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)] === [2022-11-03 03:48:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1792518638, now seen corresponding path program 1 times [2022-11-03 03:48:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:55,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003157122] [2022-11-03 03:48:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-03 03:48:56,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003157122] [2022-11-03 03:48:56,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003157122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:56,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:56,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:48:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728089270] [2022-11-03 03:48:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:56,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:56,025 INFO L87 Difference]: Start difference. First operand 8075 states and 11895 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:48:58,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:03,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:49:07,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:11,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:12,878 INFO L93 Difference]: Finished difference Result 8089 states and 11905 transitions. [2022-11-03 03:49:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:49:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 160 [2022-11-03 03:49:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:12,956 INFO L225 Difference]: With dead ends: 8089 [2022-11-03 03:49:12,957 INFO L226 Difference]: Without dead ends: 8087 [2022-11-03 03:49:12,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:49:12,966 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2073 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:12,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1224 Invalid, 3 Unknown, 0 Unchecked, 16.4s Time] [2022-11-03 03:49:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2022-11-03 03:49:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 8079. [2022-11-03 03:49:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 4674 states have (on average 1.241976893453145) internal successors, (5805), 4787 states have internal predecessors, (5805), 3042 states have call successors, (3042), 365 states have call predecessors, (3042), 360 states have return successors, (3051), 2994 states have call predecessors, (3051), 3036 states have call successors, (3051) [2022-11-03 03:49:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11898 transitions. [2022-11-03 03:49:13,801 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11898 transitions. Word has length 160 [2022-11-03 03:49:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:13,803 INFO L495 AbstractCegarLoop]: Abstraction has 8079 states and 11898 transitions. [2022-11-03 03:49:13,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:49:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11898 transitions. [2022-11-03 03:49:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 03:49:13,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:13,813 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 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] [2022-11-03 03:49:13,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:49:13,815 INFO L420 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)] === [2022-11-03 03:49:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1716740520, now seen corresponding path program 1 times [2022-11-03 03:49:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:13,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560786297] [2022-11-03 03:49:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-11-03 03:49:14,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:14,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560786297] [2022-11-03 03:49:14,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560786297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:14,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:14,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065753102] [2022-11-03 03:49:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:14,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:14,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:14,525 INFO L87 Difference]: Start difference. First operand 8079 states and 11898 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:49:16,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:20,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:22,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:49:23,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:49:27,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:30,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:33,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:34,027 INFO L93 Difference]: Finished difference Result 8093 states and 11908 transitions. [2022-11-03 03:49:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:49:34,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 174 [2022-11-03 03:49:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:34,079 INFO L225 Difference]: With dead ends: 8093 [2022-11-03 03:49:34,080 INFO L226 Difference]: Without dead ends: 8091 [2022-11-03 03:49:34,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:49:34,089 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2069 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:34,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1223 Invalid, 4 Unknown, 0 Unchecked, 19.1s Time] [2022-11-03 03:49:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-11-03 03:49:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 8083. [2022-11-03 03:49:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8083 states, 4677 states have (on average 1.2418216805644644) internal successors, (5808), 4790 states have internal predecessors, (5808), 3042 states have call successors, (3042), 366 states have call predecessors, (3042), 361 states have return successors, (3051), 2994 states have call predecessors, (3051), 3036 states have call successors, (3051) [2022-11-03 03:49:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8083 states to 8083 states and 11901 transitions. [2022-11-03 03:49:34,780 INFO L78 Accepts]: Start accepts. Automaton has 8083 states and 11901 transitions. Word has length 174 [2022-11-03 03:49:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:34,781 INFO L495 AbstractCegarLoop]: Abstraction has 8083 states and 11901 transitions. [2022-11-03 03:49:34,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:49:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8083 states and 11901 transitions. [2022-11-03 03:49:34,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-03 03:49:34,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:34,790 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 3, 3, 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] [2022-11-03 03:49:34,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:49:34,790 INFO L420 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)] === [2022-11-03 03:49:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash -438073198, now seen corresponding path program 1 times [2022-11-03 03:49:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:34,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303553423] [2022-11-03 03:49:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2022-11-03 03:49:35,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:35,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303553423] [2022-11-03 03:49:35,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303553423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:35,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:35,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240968404] [2022-11-03 03:49:35,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:35,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:35,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:35,426 INFO L87 Difference]: Start difference. First operand 8083 states and 11901 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:49:37,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:40,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:42,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:49:46,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:49,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:50,985 INFO L93 Difference]: Finished difference Result 8097 states and 11911 transitions. [2022-11-03 03:49:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:49:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 170 [2022-11-03 03:49:50,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:51,050 INFO L225 Difference]: With dead ends: 8097 [2022-11-03 03:49:51,050 INFO L226 Difference]: Without dead ends: 8095 [2022-11-03 03:49:51,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:49:51,062 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2073 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:51,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1224 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-11-03 03:49:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-11-03 03:49:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 8087. [2022-11-03 03:49:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 4680 states have (on average 1.2416666666666667) internal successors, (5811), 4793 states have internal predecessors, (5811), 3042 states have call successors, (3042), 367 states have call predecessors, (3042), 362 states have return successors, (3051), 2994 states have call predecessors, (3051), 3036 states have call successors, (3051) [2022-11-03 03:49:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11904 transitions. [2022-11-03 03:49:51,905 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11904 transitions. Word has length 170 [2022-11-03 03:49:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:51,908 INFO L495 AbstractCegarLoop]: Abstraction has 8087 states and 11904 transitions. [2022-11-03 03:49:51,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:49:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11904 transitions. [2022-11-03 03:49:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-03 03:49:51,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:51,917 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 5, 4, 4, 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] [2022-11-03 03:49:51,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:49:51,918 INFO L420 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)] === [2022-11-03 03:49:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash 795838808, now seen corresponding path program 1 times [2022-11-03 03:49:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:51,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603364331] [2022-11-03 03:49:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:51,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-03 03:49:52,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:52,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603364331] [2022-11-03 03:49:52,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603364331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:52,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:52,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:49:52,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703201711] [2022-11-03 03:49:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:52,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:49:52,540 INFO L87 Difference]: Start difference. First operand 8087 states and 11904 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:49:54,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:59,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:03,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:05,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:07,531 INFO L93 Difference]: Finished difference Result 8101 states and 11914 transitions. [2022-11-03 03:50:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:50:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2022-11-03 03:50:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:07,600 INFO L225 Difference]: With dead ends: 8101 [2022-11-03 03:50:07,600 INFO L226 Difference]: Without dead ends: 8099 [2022-11-03 03:50:07,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:07,611 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2069 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:07,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1224 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2022-11-03 03:50:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2022-11-03 03:50:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 8091. [2022-11-03 03:50:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8091 states, 4683 states have (on average 1.2415118513773222) internal successors, (5814), 4796 states have internal predecessors, (5814), 3042 states have call successors, (3042), 368 states have call predecessors, (3042), 363 states have return successors, (3051), 2994 states have call predecessors, (3051), 3036 states have call successors, (3051) [2022-11-03 03:50:08,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 11907 transitions. [2022-11-03 03:50:08,454 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 11907 transitions. Word has length 184 [2022-11-03 03:50:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:08,455 INFO L495 AbstractCegarLoop]: Abstraction has 8091 states and 11907 transitions. [2022-11-03 03:50:08,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:50:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 11907 transitions. [2022-11-03 03:50:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 03:50:08,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:08,464 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 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] [2022-11-03 03:50:08,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:50:08,464 INFO L420 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)] === [2022-11-03 03:50:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1734193322, now seen corresponding path program 1 times [2022-11-03 03:50:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:08,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525456752] [2022-11-03 03:50:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-11-03 03:50:09,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:09,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525456752] [2022-11-03 03:50:09,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525456752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:09,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:09,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276057868] [2022-11-03 03:50:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:09,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:09,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:09,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:09,072 INFO L87 Difference]: Start difference. First operand 8091 states and 11907 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:50:11,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:13,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:14,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:17,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:21,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:25,210 INFO L93 Difference]: Finished difference Result 8105 states and 11917 transitions. [2022-11-03 03:50:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:50:25,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 189 [2022-11-03 03:50:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:25,267 INFO L225 Difference]: With dead ends: 8105 [2022-11-03 03:50:25,268 INFO L226 Difference]: Without dead ends: 8103 [2022-11-03 03:50:25,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:25,277 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2069 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:25,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1224 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:50:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2022-11-03 03:50:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 8095. [2022-11-03 03:50:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8095 states, 4686 states have (on average 1.2413572343149808) internal successors, (5817), 4799 states have internal predecessors, (5817), 3042 states have call successors, (3042), 369 states have call predecessors, (3042), 364 states have return successors, (3051), 2994 states have call predecessors, (3051), 3036 states have call successors, (3051) [2022-11-03 03:50:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 11910 transitions. [2022-11-03 03:50:26,190 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 11910 transitions. Word has length 189 [2022-11-03 03:50:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:26,191 INFO L495 AbstractCegarLoop]: Abstraction has 8095 states and 11910 transitions. [2022-11-03 03:50:26,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:50:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 11910 transitions. [2022-11-03 03:50:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-03 03:50:26,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:26,202 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 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] [2022-11-03 03:50:26,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:50:26,203 INFO L420 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)] === [2022-11-03 03:50:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 221930584, now seen corresponding path program 1 times [2022-11-03 03:50:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070269973] [2022-11-03 03:50:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-11-03 03:50:26,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:26,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070269973] [2022-11-03 03:50:26,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070269973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:26,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:26,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406338196] [2022-11-03 03:50:26,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:26,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:26,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:26,845 INFO L87 Difference]: Start difference. First operand 8095 states and 11910 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:50:29,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:34,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:37,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:39,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:41,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:44,721 INFO L93 Difference]: Finished difference Result 10857 states and 15922 transitions. [2022-11-03 03:50:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:50:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 194 [2022-11-03 03:50:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:44,796 INFO L225 Difference]: With dead ends: 10857 [2022-11-03 03:50:44,796 INFO L226 Difference]: Without dead ends: 10855 [2022-11-03 03:50:44,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:44,872 INFO L413 NwaCegarLoop]: 2711 mSDtfsCounter, 2034 mSDsluCounter, 8222 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 10131 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:44,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 10131 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1097 Invalid, 4 Unknown, 0 Unchecked, 17.3s Time] [2022-11-03 03:50:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2022-11-03 03:50:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 10848. [2022-11-03 03:50:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10848 states, 6274 states have (on average 1.24083519285942) internal successors, (7785), 6426 states have internal predecessors, (7785), 4059 states have call successors, (4059), 520 states have call predecessors, (4059), 512 states have return successors, (4070), 3991 states have call predecessors, (4070), 4050 states have call successors, (4070) [2022-11-03 03:50:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10848 states to 10848 states and 15914 transitions. [2022-11-03 03:50:45,856 INFO L78 Accepts]: Start accepts. Automaton has 10848 states and 15914 transitions. Word has length 194 [2022-11-03 03:50:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:45,858 INFO L495 AbstractCegarLoop]: Abstraction has 10848 states and 15914 transitions. [2022-11-03 03:50:45,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:50:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10848 states and 15914 transitions. [2022-11-03 03:50:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 03:50:45,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:45,869 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 4, 4, 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] [2022-11-03 03:50:45,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:50:45,869 INFO L420 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)] === [2022-11-03 03:50:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1060921966, now seen corresponding path program 1 times [2022-11-03 03:50:45,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:45,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490174574] [2022-11-03 03:50:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:45,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-11-03 03:50:46,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:46,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490174574] [2022-11-03 03:50:46,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490174574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:46,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:46,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534140283] [2022-11-03 03:50:46,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:46,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:46,568 INFO L87 Difference]: Start difference. First operand 10848 states and 15914 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:50:48,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:53,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:58,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:02,446 INFO L93 Difference]: Finished difference Result 10862 states and 15924 transitions. [2022-11-03 03:51:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:02,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 190 [2022-11-03 03:51:02,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:02,502 INFO L225 Difference]: With dead ends: 10862 [2022-11-03 03:51:02,502 INFO L226 Difference]: Without dead ends: 10860 [2022-11-03 03:51:02,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:02,512 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2073 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:02,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1224 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2022-11-03 03:51:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2022-11-03 03:51:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 10852. [2022-11-03 03:51:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10852 states, 6277 states have (on average 1.2407200892145929) internal successors, (7788), 6429 states have internal predecessors, (7788), 4059 states have call successors, (4059), 521 states have call predecessors, (4059), 513 states have return successors, (4070), 3991 states have call predecessors, (4070), 4050 states have call successors, (4070) [2022-11-03 03:51:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10852 states to 10852 states and 15917 transitions. [2022-11-03 03:51:03,466 INFO L78 Accepts]: Start accepts. Automaton has 10852 states and 15917 transitions. Word has length 190 [2022-11-03 03:51:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:03,467 INFO L495 AbstractCegarLoop]: Abstraction has 10852 states and 15917 transitions. [2022-11-03 03:51:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:51:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 10852 states and 15917 transitions. [2022-11-03 03:51:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 03:51:03,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:03,476 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 4, 4, 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] [2022-11-03 03:51:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:51:03,476 INFO L420 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)] === [2022-11-03 03:51:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash 247887856, now seen corresponding path program 1 times [2022-11-03 03:51:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:03,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484431261] [2022-11-03 03:51:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:03,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-03 03:51:04,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:04,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484431261] [2022-11-03 03:51:04,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484431261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:04,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:04,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:04,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480682458] [2022-11-03 03:51:04,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:04,045 INFO L87 Difference]: Start difference. First operand 10852 states and 15917 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:51:06,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:11,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:14,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:16,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:19,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:20,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:23,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:25,226 INFO L93 Difference]: Finished difference Result 10866 states and 15927 transitions. [2022-11-03 03:51:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 195 [2022-11-03 03:51:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:25,292 INFO L225 Difference]: With dead ends: 10866 [2022-11-03 03:51:25,292 INFO L226 Difference]: Without dead ends: 10864 [2022-11-03 03:51:25,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:25,302 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2073 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:25,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 10440 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1223 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2022-11-03 03:51:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2022-11-03 03:51:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10856. [2022-11-03 03:51:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10856 states, 6280 states have (on average 1.2406050955414012) internal successors, (7791), 6432 states have internal predecessors, (7791), 4059 states have call successors, (4059), 522 states have call predecessors, (4059), 514 states have return successors, (4070), 3991 states have call predecessors, (4070), 4050 states have call successors, (4070) [2022-11-03 03:51:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 15920 transitions. [2022-11-03 03:51:26,230 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 15920 transitions. Word has length 195 [2022-11-03 03:51:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:26,231 INFO L495 AbstractCegarLoop]: Abstraction has 10856 states and 15920 transitions. [2022-11-03 03:51:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:51:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 15920 transitions. [2022-11-03 03:51:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 03:51:26,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:26,240 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 6, 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] [2022-11-03 03:51:26,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:51:26,241 INFO L420 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)] === [2022-11-03 03:51:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1132975702, now seen corresponding path program 1 times [2022-11-03 03:51:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:26,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164180027] [2022-11-03 03:51:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-11-03 03:51:26,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:26,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164180027] [2022-11-03 03:51:26,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164180027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:26,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:26,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508945033] [2022-11-03 03:51:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:26,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:26,906 INFO L87 Difference]: Start difference. First operand 10856 states and 15920 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:51:29,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:34,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:36,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:38,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:41,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:43,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:46,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:47,185 INFO L93 Difference]: Finished difference Result 10870 states and 15930 transitions. [2022-11-03 03:51:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:51:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 209 [2022-11-03 03:51:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:47,242 INFO L225 Difference]: With dead ends: 10870 [2022-11-03 03:51:47,242 INFO L226 Difference]: Without dead ends: 10868 [2022-11-03 03:51:47,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:47,253 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2069 mSDsluCounter, 8513 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 10440 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:47,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 10440 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1218 Invalid, 6 Unknown, 0 Unchecked, 19.5s Time] [2022-11-03 03:51:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10868 states. [2022-11-03 03:51:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10868 to 10860. [2022-11-03 03:51:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 6283 states have (on average 1.2404902116823173) internal successors, (7794), 6435 states have internal predecessors, (7794), 4059 states have call successors, (4059), 523 states have call predecessors, (4059), 515 states have return successors, (4070), 3991 states have call predecessors, (4070), 4050 states have call successors, (4070) [2022-11-03 03:51:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 15923 transitions. [2022-11-03 03:51:48,456 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 15923 transitions. Word has length 209 [2022-11-03 03:51:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:48,457 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 15923 transitions. [2022-11-03 03:51:48,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:51:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 15923 transitions. [2022-11-03 03:51:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 03:51:48,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:48,468 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 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] [2022-11-03 03:51:48,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:51:48,469 INFO L420 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)] === [2022-11-03 03:51:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1396173400, now seen corresponding path program 1 times [2022-11-03 03:51:48,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823513130] [2022-11-03 03:51:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-11-03 03:51:49,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:49,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823513130] [2022-11-03 03:51:49,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823513130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:49,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:49,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094381768] [2022-11-03 03:51:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:49,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:49,108 INFO L87 Difference]: Start difference. First operand 10860 states and 15923 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:51:51,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:53,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:55,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:57,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:59,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:00,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:02,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:05,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:08,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:10,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:14,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:16,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:18,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:20,324 INFO L93 Difference]: Finished difference Result 13634 states and 19963 transitions. [2022-11-03 03:52:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:52:20,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 214 [2022-11-03 03:52:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:20,390 INFO L225 Difference]: With dead ends: 13634 [2022-11-03 03:52:20,390 INFO L226 Difference]: Without dead ends: 13630 [2022-11-03 03:52:20,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:52:20,403 INFO L413 NwaCegarLoop]: 2772 mSDtfsCounter, 2082 mSDsluCounter, 8418 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 10317 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:20,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 10317 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1192 Invalid, 8 Unknown, 0 Unchecked, 30.4s Time] [2022-11-03 03:52:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13630 states. [2022-11-03 03:52:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13630 to 13623. [2022-11-03 03:52:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13623 states, 7878 states have (on average 1.24003554201574) internal successors, (9769), 8066 states have internal predecessors, (9769), 5086 states have call successors, (5086), 668 states have call predecessors, (5086), 656 states have return successors, (5099), 5000 states have call predecessors, (5099), 5074 states have call successors, (5099) [2022-11-03 03:52:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 19954 transitions. [2022-11-03 03:52:21,698 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 19954 transitions. Word has length 214 [2022-11-03 03:52:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:21,699 INFO L495 AbstractCegarLoop]: Abstraction has 13623 states and 19954 transitions. [2022-11-03 03:52:21,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-03 03:52:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 19954 transitions. [2022-11-03 03:52:21,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 03:52:21,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:21,709 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 4, 4, 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] [2022-11-03 03:52:21,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:52:21,710 INFO L420 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)] === [2022-11-03 03:52:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash -992611694, now seen corresponding path program 1 times [2022-11-03 03:52:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:21,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459220443] [2022-11-03 03:52:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:21,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-03 03:52:22,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:22,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459220443] [2022-11-03 03:52:22,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459220443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:22,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:22,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:52:22,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798383381] [2022-11-03 03:52:22,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:22,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:22,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:22,302 INFO L87 Difference]: Start difference. First operand 13623 states and 19954 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:52:24,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:26,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:28,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:31,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:32,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:36,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:38,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:40,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:43,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:44,545 INFO L93 Difference]: Finished difference Result 13631 states and 19959 transitions. [2022-11-03 03:52:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:52:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 210 [2022-11-03 03:52:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:44,602 INFO L225 Difference]: With dead ends: 13631 [2022-11-03 03:52:44,603 INFO L226 Difference]: Without dead ends: 13558 [2022-11-03 03:52:44,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:52:44,612 INFO L413 NwaCegarLoop]: 2813 mSDtfsCounter, 2069 mSDsluCounter, 8518 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 10442 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:44,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 10442 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1219 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-11-03 03:52:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13558 states. [2022-11-03 03:52:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13558 to 13552. [2022-11-03 03:52:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 7840 states have (on average 1.240688775510204) internal successors, (9727), 8025 states have internal predecessors, (9727), 5064 states have call successors, (5064), 655 states have call predecessors, (5064), 645 states have return successors, (5080), 4983 states have call predecessors, (5080), 5055 states have call successors, (5080) [2022-11-03 03:52:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 19871 transitions. [2022-11-03 03:52:45,762 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 19871 transitions. Word has length 210 [2022-11-03 03:52:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:45,763 INFO L495 AbstractCegarLoop]: Abstraction has 13552 states and 19871 transitions. [2022-11-03 03:52:45,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-03 03:52:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 19871 transitions. [2022-11-03 03:52:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 03:52:45,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:45,772 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 4, 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] [2022-11-03 03:52:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:52:45,773 INFO L420 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)] === [2022-11-03 03:52:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2047578541, now seen corresponding path program 1 times [2022-11-03 03:52:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:45,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084017108] [2022-11-03 03:52:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:45,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:52:45,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861203233] [2022-11-03 03:52:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:45,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:45,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:52:45,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:52:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:47,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 3522 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:52:47,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-11-03 03:52:47,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:52:47,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084017108] [2022-11-03 03:52:47,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:52:47,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861203233] [2022-11-03 03:52:47,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861203233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:47,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:47,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276032415] [2022-11-03 03:52:47,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:47,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:47,592 INFO L87 Difference]: Start difference. First operand 13552 states and 19871 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 03:52:50,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:54,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:56,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:59,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:01,536 INFO L93 Difference]: Finished difference Result 38820 states and 56938 transitions. [2022-11-03 03:53:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 219 [2022-11-03 03:53:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:01,650 INFO L225 Difference]: With dead ends: 38820 [2022-11-03 03:53:01,650 INFO L226 Difference]: Without dead ends: 25289 [2022-11-03 03:53:01,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:01,756 INFO L413 NwaCegarLoop]: 2704 mSDtfsCounter, 1966 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 4590 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:01,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 4590 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 582 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2022-11-03 03:53:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2022-11-03 03:53:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 25193. [2022-11-03 03:53:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25193 states, 14579 states have (on average 1.234515398861376) internal successors, (17998), 14932 states have internal predecessors, (17998), 9418 states have call successors, (9418), 1219 states have call predecessors, (9418), 1193 states have return successors, (9479), 9243 states have call predecessors, (9479), 9409 states have call successors, (9479) [2022-11-03 03:53:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25193 states to 25193 states and 36895 transitions. [2022-11-03 03:53:03,902 INFO L78 Accepts]: Start accepts. Automaton has 25193 states and 36895 transitions. Word has length 219 [2022-11-03 03:53:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:03,903 INFO L495 AbstractCegarLoop]: Abstraction has 25193 states and 36895 transitions. [2022-11-03 03:53:03,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 03:53:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 25193 states and 36895 transitions. [2022-11-03 03:53:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-03 03:53:03,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:03,918 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 4, 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] [2022-11-03 03:53:03,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:04,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 03:53:04,124 INFO L420 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)] === [2022-11-03 03:53:04,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1794458628, now seen corresponding path program 1 times [2022-11-03 03:53:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:04,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624279086] [2022-11-03 03:53:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:04,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:04,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624279086] [2022-11-03 03:53:04,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:53:04,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118434253] [2022-11-03 03:53:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:04,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:04,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:04,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:04,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:53:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:53:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-03 03:53:06,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:06,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118434253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:06,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:06,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53491679] [2022-11-03 03:53:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:06,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:06,059 INFO L87 Difference]: Start difference. First operand 25193 states and 36895 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 03:53:08,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:11,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:12,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:15,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:53:18,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:20,994 INFO L93 Difference]: Finished difference Result 61775 states and 90128 transitions. [2022-11-03 03:53:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 243 [2022-11-03 03:53:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:21,232 INFO L225 Difference]: With dead ends: 61775 [2022-11-03 03:53:21,232 INFO L226 Difference]: Without dead ends: 36603 [2022-11-03 03:53:21,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:21,377 INFO L413 NwaCegarLoop]: 2766 mSDtfsCounter, 1828 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 21 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 4673 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:21,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 4673 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 619 Invalid, 4 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 03:53:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36603 states. [2022-11-03 03:53:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36603 to 36497. [2022-11-03 03:53:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36497 states, 20995 states have (on average 1.2201476542033818) internal successors, (25617), 21516 states have internal predecessors, (25617), 13644 states have call successors, (13644), 1897 states have call predecessors, (13644), 1855 states have return successors, (13750), 13365 states have call predecessors, (13750), 13635 states have call successors, (13750) [2022-11-03 03:53:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36497 states to 36497 states and 53011 transitions. [2022-11-03 03:53:25,141 INFO L78 Accepts]: Start accepts. Automaton has 36497 states and 53011 transitions. Word has length 243 [2022-11-03 03:53:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:25,141 INFO L495 AbstractCegarLoop]: Abstraction has 36497 states and 53011 transitions. [2022-11-03 03:53:25,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 03:53:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 36497 states and 53011 transitions. [2022-11-03 03:53:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-03 03:53:25,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:25,161 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 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] [2022-11-03 03:53:25,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:25,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:53:25,362 INFO L420 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)] === [2022-11-03 03:53:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1905722438, now seen corresponding path program 1 times [2022-11-03 03:53:25,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:25,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779718056] [2022-11-03 03:53:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:25,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:25,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:25,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779718056] [2022-11-03 03:53:25,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:53:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685927049] [2022-11-03 03:53:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:25,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:25,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:25,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:25,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:53:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:27,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 4736 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:53:27,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2022-11-03 03:53:27,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:27,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685927049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:27,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:27,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393115547] [2022-11-03 03:53:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:27,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:27,837 INFO L87 Difference]: Start difference. First operand 36497 states and 53011 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 03:53:32,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:34,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:36,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:38,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:53:41,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:44,935 INFO L93 Difference]: Finished difference Result 77623 states and 112436 transitions. [2022-11-03 03:53:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 443 [2022-11-03 03:53:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:45,158 INFO L225 Difference]: With dead ends: 77623 [2022-11-03 03:53:45,158 INFO L226 Difference]: Without dead ends: 41147 [2022-11-03 03:53:45,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:45,425 INFO L413 NwaCegarLoop]: 3427 mSDtfsCounter, 1618 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:45,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 5443 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 732 Invalid, 3 Unknown, 0 Unchecked, 14.2s Time] [2022-11-03 03:53:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41147 states. [2022-11-03 03:53:48,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41147 to 41024. [2022-11-03 03:53:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41024 states, 23905 states have (on average 1.215938088266053) internal successors, (29067), 24483 states have internal predecessors, (29067), 14880 states have call successors, (14880), 2278 states have call predecessors, (14880), 2236 states have return successors, (14975), 14544 states have call predecessors, (14975), 14871 states have call successors, (14975) [2022-11-03 03:53:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41024 states to 41024 states and 58922 transitions. [2022-11-03 03:53:48,478 INFO L78 Accepts]: Start accepts. Automaton has 41024 states and 58922 transitions. Word has length 443 [2022-11-03 03:53:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:48,478 INFO L495 AbstractCegarLoop]: Abstraction has 41024 states and 58922 transitions. [2022-11-03 03:53:48,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 03:53:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41024 states and 58922 transitions. [2022-11-03 03:53:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-03 03:53:48,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:48,497 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 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] [2022-11-03 03:53:48,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:48,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:53:48,714 INFO L420 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)] === [2022-11-03 03:53:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:48,714 INFO L85 PathProgramCache]: Analyzing trace with hash 767372964, now seen corresponding path program 1 times [2022-11-03 03:53:48,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:48,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414080420] [2022-11-03 03:53:48,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:48,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:49,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:49,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414080420] [2022-11-03 03:53:49,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:53:49,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356147500] [2022-11-03 03:53:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:49,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:49,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:49,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:53:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:50,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 4988 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:53:50,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1858 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-11-03 03:53:51,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:51,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356147500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:51,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:51,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295204042] [2022-11-03 03:53:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:51,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:51,111 INFO L87 Difference]: Start difference. First operand 41024 states and 58922 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-03 03:53:55,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:00,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:54:04,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:06,922 INFO L93 Difference]: Finished difference Result 93900 states and 134737 transitions. [2022-11-03 03:54:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 486 [2022-11-03 03:54:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:07,232 INFO L225 Difference]: With dead ends: 93900 [2022-11-03 03:54:07,232 INFO L226 Difference]: Without dead ends: 52948 [2022-11-03 03:54:07,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:07,435 INFO L413 NwaCegarLoop]: 3419 mSDtfsCounter, 1613 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:07,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 5427 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 729 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 03:54:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52948 states. [2022-11-03 03:54:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52948 to 52849. [2022-11-03 03:54:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52849 states, 30974 states have (on average 1.2141473493898107) internal successors, (37607), 31711 states have internal predecessors, (37607), 18863 states have call successors, (18863), 3058 states have call predecessors, (18863), 3009 states have return successors, (18970), 18417 states have call predecessors, (18970), 18854 states have call successors, (18970) [2022-11-03 03:54:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52849 states to 52849 states and 75440 transitions. [2022-11-03 03:54:11,955 INFO L78 Accepts]: Start accepts. Automaton has 52849 states and 75440 transitions. Word has length 486 [2022-11-03 03:54:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:11,955 INFO L495 AbstractCegarLoop]: Abstraction has 52849 states and 75440 transitions. [2022-11-03 03:54:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-03 03:54:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 52849 states and 75440 transitions. [2022-11-03 03:54:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-11-03 03:54:11,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:11,975 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 24, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 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] [2022-11-03 03:54:12,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 03:54:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 03:54:12,176 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-11-03 03:54:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash -607311941, now seen corresponding path program 1 times [2022-11-03 03:54:12,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:12,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882435363] [2022-11-03 03:54:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:12,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:54:12,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308869297] [2022-11-03 03:54:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:12,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:12,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:12,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:54:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 5197 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:54:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2022-11-03 03:54:14,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:14,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:14,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882435363] [2022-11-03 03:54:14,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:54:14,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308869297] [2022-11-03 03:54:14,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308869297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:14,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:14,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165327500] [2022-11-03 03:54:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:14,864 INFO L87 Difference]: Start difference. First operand 52849 states and 75440 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2022-11-03 03:54:17,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:20,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:21,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:24,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:54:25,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:54:28,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:34,086 INFO L93 Difference]: Finished difference Result 118288 states and 168813 transitions. [2022-11-03 03:54:34,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:34,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 548 [2022-11-03 03:54:34,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:34,572 INFO L225 Difference]: With dead ends: 118288 [2022-11-03 03:54:34,572 INFO L226 Difference]: Without dead ends: 65511 [2022-11-03 03:54:34,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:34,751 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 1922 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:34,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 4690 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 620 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 03:54:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65511 states. [2022-11-03 03:54:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65511 to 65371. [2022-11-03 03:54:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65371 states, 38504 states have (on average 1.211094951173904) internal successors, (46632), 39414 states have internal predecessors, (46632), 23118 states have call successors, (23118), 3810 states have call predecessors, (23118), 3746 states have return successors, (23261), 22556 states have call predecessors, (23261), 23109 states have call successors, (23261) [2022-11-03 03:54:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65371 states to 65371 states and 93011 transitions. [2022-11-03 03:54:40,579 INFO L78 Accepts]: Start accepts. Automaton has 65371 states and 93011 transitions. Word has length 548 [2022-11-03 03:54:40,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:40,580 INFO L495 AbstractCegarLoop]: Abstraction has 65371 states and 93011 transitions. [2022-11-03 03:54:40,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2022-11-03 03:54:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 65371 states and 93011 transitions. [2022-11-03 03:54:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-11-03 03:54:40,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:40,606 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:40,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_669293af-117f-4fca-afe6-00069ad9f6fa/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:40,825 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-03 03:54:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1143393362, now seen corresponding path program 1 times [2022-11-03 03:54:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:40,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193839749] [2022-11-03 03:54:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:40,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2022-11-03 03:54:41,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:41,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193839749] [2022-11-03 03:54:41,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193839749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:41,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:41,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:41,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860983344] [2022-11-03 03:54:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:41,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:41,651 INFO L87 Difference]: Start difference. First operand 65371 states and 93011 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2022-11-03 03:54:43,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:45,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:47,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:49,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:51,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:54:54,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:54:56,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []