./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-media-usb-gspca-gspca_ov519.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0da9b2775f98d30f03d1fa5b2c7b9aebe5198411fc856f3ea3af31dd47dd5198 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 07:43:47,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 07:43:47,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 07:43:47,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 07:43:47,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 07:43:47,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 07:43:47,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 07:43:47,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 07:43:47,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 07:43:47,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 07:43:47,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 07:43:47,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 07:43:47,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 07:43:47,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 07:43:47,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 07:43:47,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 07:43:47,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 07:43:47,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 07:43:47,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 07:43:47,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 07:43:47,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 07:43:47,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 07:43:47,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 07:43:47,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 07:43:47,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 07:43:47,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 07:43:47,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 07:43:47,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 07:43:47,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 07:43:47,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 07:43:47,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 07:43:47,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 07:43:47,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 07:43:47,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 07:43:47,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 07:43:47,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 07:43:47,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 07:43:47,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 07:43:47,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 07:43:47,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 07:43:47,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 07:43:47,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 07:43:47,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 07:43:47,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 07:43:47,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 07:43:47,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 07:43:47,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 07:43:47,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 07:43:47,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 07:43:47,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 07:43:47,279 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 07:43:47,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 07:43:47,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 07:43:47,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 07:43:47,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 07:43:47,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 07:43:47,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 07:43:47,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 07:43:47,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 07:43:47,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 07:43:47,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 07:43:47,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 07:43:47,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 07:43:47,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 07:43:47,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 07:43:47,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 07:43:47,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 07:43:47,284 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0da9b2775f98d30f03d1fa5b2c7b9aebe5198411fc856f3ea3af31dd47dd5198 [2021-11-17 07:43:47,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 07:43:47,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 07:43:47,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 07:43:47,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 07:43:47,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 07:43:47,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i [2021-11-17 07:43:47,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d54520a5/e85fc7fc10d24542a564f48ce4941076/FLAG5d85b1fe6 [2021-11-17 07:43:48,171 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 07:43:48,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i [2021-11-17 07:43:48,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d54520a5/e85fc7fc10d24542a564f48ce4941076/FLAG5d85b1fe6 [2021-11-17 07:43:48,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d54520a5/e85fc7fc10d24542a564f48ce4941076 [2021-11-17 07:43:48,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 07:43:48,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 07:43:48,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 07:43:48,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 07:43:48,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 07:43:48,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:43:48" (1/1) ... [2021-11-17 07:43:48,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b726500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:48, skipping insertion in model container [2021-11-17 07:43:48,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:43:48" (1/1) ... [2021-11-17 07:43:48,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 07:43:48,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 07:43:50,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[359877,359890] [2021-11-17 07:43:50,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[360046,360059] [2021-11-17 07:43:50,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[360213,360226] [2021-11-17 07:43:50,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[360381,360394] [2021-11-17 07:43:50,101 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 07:43:50,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 07:43:50,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[359877,359890] [2021-11-17 07:43:50,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[360046,360059] [2021-11-17 07:43:50,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[360213,360226] [2021-11-17 07:43:50,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i[360381,360394] [2021-11-17 07:43:50,461 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 07:43:50,594 INFO L208 MainTranslator]: Completed translation [2021-11-17 07:43:50,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50 WrapperNode [2021-11-17 07:43:50,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 07:43:50,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 07:43:50,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 07:43:50,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 07:43:50,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:50,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:50,895 INFO L137 Inliner]: procedures = 290, calls = 5733, calls flagged for inlining = 124, calls inlined = 112, statements flattened = 8266 [2021-11-17 07:43:50,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 07:43:50,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 07:43:50,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 07:43:50,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 07:43:50,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:50,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:50,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:50,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:51,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:51,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:51,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:51,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 07:43:51,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 07:43:51,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 07:43:51,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 07:43:51,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (1/1) ... [2021-11-17 07:43:51,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 07:43:51,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 07:43:51,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 07:43:51,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 07:43:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure setbrightness [2021-11-17 07:43:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setbrightness [2021-11-17 07:43:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure ov519_set_fr [2021-11-17 07:43:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ov519_set_fr [2021-11-17 07:43:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_write_sb [2021-11-17 07:43:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_write_sb [2021-11-17 07:43:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-17 07:43:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-17 07:43:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_init [2021-11-17 07:43:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_init [2021-11-17 07:43:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 07:43:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 07:43:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 07:43:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 07:43:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-11-17 07:43:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-11-17 07:43:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 07:43:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 07:43:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure ov51x_upload_quan_tables [2021-11-17 07:43:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ov51x_upload_quan_tables [2021-11-17 07:43:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure sd_start [2021-11-17 07:43:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_start [2021-11-17 07:43:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 07:43:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 07:43:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_frame_add [2021-11-17 07:43:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_frame_add [2021-11-17 07:43:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure reg_w_mask [2021-11-17 07:43:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_w_mask [2021-11-17 07:43:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure ov518_i2c_w [2021-11-17 07:43:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ov518_i2c_w [2021-11-17 07:43:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 07:43:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-17 07:43:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-17 07:43:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure ov519_set_mode [2021-11-17 07:43:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ov519_set_mode [2021-11-17 07:43:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure ov51x_handle_button [2021-11-17 07:43:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ov51x_handle_button [2021-11-17 07:43:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 07:43:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-17 07:43:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-17 07:43:51,381 INFO L130 BoogieDeclarations]: Found specification of procedure ov51x_stop [2021-11-17 07:43:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ov51x_stop [2021-11-17 07:43:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_smbus_stop [2021-11-17 07:43:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_smbus_stop [2021-11-17 07:43:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-11-17 07:43:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-11-17 07:43:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-17 07:43:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-17 07:43:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 07:43:51,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 07:43:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure sd_reset_snapshot [2021-11-17 07:43:51,384 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_reset_snapshot [2021-11-17 07:43:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 07:43:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure mode_init_ov_sensor_regs [2021-11-17 07:43:51,384 INFO L138 BoogieDeclarations]: Found implementation of procedure mode_init_ov_sensor_regs [2021-11-17 07:43:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 07:43:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_smbus_read_ack [2021-11-17 07:43:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_smbus_read_ack [2021-11-17 07:43:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure write_regvals [2021-11-17 07:43:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure write_regvals [2021-11-17 07:43:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure ov518_reg_w32 [2021-11-17 07:43:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ov518_reg_w32 [2021-11-17 07:43:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-17 07:43:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-17 07:43:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-17 07:43:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-17 07:43:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write_i2c_regvals [2021-11-17 07:43:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure write_i2c_regvals [2021-11-17 07:43:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 07:43:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_smbus_write_byte [2021-11-17 07:43:51,387 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_smbus_write_byte [2021-11-17 07:43:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure sd_g_volatile_ctrl [2021-11-17 07:43:51,387 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_g_volatile_ctrl [2021-11-17 07:43:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 07:43:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-17 07:43:51,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-17 07:43:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_grab [2021-11-17 07:43:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_grab [2021-11-17 07:43:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 07:43:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2021-11-17 07:43:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2021-11-17 07:43:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 07:43:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 07:43:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 07:43:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 07:43:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init [2021-11-17 07:43:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init [2021-11-17 07:43:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure init_ov_sensor [2021-11-17 07:43:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ov_sensor [2021-11-17 07:43:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_write_fsb [2021-11-17 07:43:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_write_fsb [2021-11-17 07:43:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 07:43:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-11-17 07:43:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-11-17 07:43:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-17 07:43:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-17 07:43:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_disconnect [2021-11-17 07:43:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_disconnect [2021-11-17 07:43:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_smbus_start [2021-11-17 07:43:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_smbus_start [2021-11-17 07:43:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std_menu [2021-11-17 07:43:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std_menu [2021-11-17 07:43:51,391 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_set_crop_window [2021-11-17 07:43:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_set_crop_window [2021-11-17 07:43:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-17 07:43:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-17 07:43:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure ov51x_led_control [2021-11-17 07:43:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ov51x_led_control [2021-11-17 07:43:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 07:43:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2021-11-17 07:43:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2021-11-17 07:43:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-17 07:43:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-17 07:43:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-17 07:43:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-17 07:43:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 07:43:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_w_mask [2021-11-17 07:43:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_w_mask [2021-11-17 07:43:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 07:43:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 07:43:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-17 07:43:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-17 07:43:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 07:43:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-17 07:43:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-17 07:43:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-17 07:43:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-17 07:43:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stopN [2021-11-17 07:43:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stopN [2021-11-17 07:43:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure sd_s_ctrl [2021-11-17 07:43:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_s_ctrl [2021-11-17 07:43:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_g_ctrl [2021-11-17 07:43:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_g_ctrl [2021-11-17 07:43:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-17 07:43:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-17 07:43:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stop0 [2021-11-17 07:43:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stop0 [2021-11-17 07:43:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure ov51x_restart [2021-11-17 07:43:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ov51x_restart [2021-11-17 07:43:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_w [2021-11-17 07:43:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_w [2021-11-17 07:43:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_r [2021-11-17 07:43:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_r [2021-11-17 07:43:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure reg_r8 [2021-11-17 07:43:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_r8 [2021-11-17 07:43:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init_controls [2021-11-17 07:43:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init_controls [2021-11-17 07:43:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 07:43:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_auto_cluster [2021-11-17 07:43:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_auto_cluster [2021-11-17 07:43:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure reg_r [2021-11-17 07:43:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_r [2021-11-17 07:43:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-17 07:43:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-17 07:43:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure w9968cf_read_sb [2021-11-17 07:43:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure w9968cf_read_sb [2021-11-17 07:43:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure reg_w [2021-11-17 07:43:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_w [2021-11-17 07:43:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 07:43:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 07:43:51,871 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 07:43:51,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 07:44:01,253 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 07:47:34,269 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-17 07:47:34,464 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 07:47:34,477 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 07:47:34,477 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 07:47:34,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 07:47:34 BoogieIcfgContainer [2021-11-17 07:47:34,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 07:47:34,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 07:47:34,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 07:47:34,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 07:47:34,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:43:48" (1/3) ... [2021-11-17 07:47:34,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2105468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:34, skipping insertion in model container [2021-11-17 07:47:34,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:43:50" (2/3) ... [2021-11-17 07:47:34,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2105468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:34, skipping insertion in model container [2021-11-17 07:47:34,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 07:47:34" (3/3) ... [2021-11-17 07:47:34,488 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-usb-gspca-gspca_ov519.cil.i [2021-11-17 07:47:34,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 07:47:34,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 07:47:34,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 07:47:34,557 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 07:47:34,558 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 07:47:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 2126 states, 1431 states have (on average 1.443046820405311) internal successors, (2065), 1534 states have internal predecessors, (2065), 623 states have call successors, (623), 72 states have call predecessors, (623), 71 states have return successors, (616), 547 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-17 07:47:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-17 07:47:34,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:47:34,623 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:47:34,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:47:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:47:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1932811021, now seen corresponding path program 1 times [2021-11-17 07:47:34,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:47:34,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125870578] [2021-11-17 07:47:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:47:34,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:47:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:47:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:47:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:47:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:47:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:47:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:47:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:47:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:47:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:47:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:47:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:47:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 07:47:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:47:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-17 07:47:35,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:47:35,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125870578] [2021-11-17 07:47:35,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125870578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:47:35,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:47:35,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:47:35,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275322178] [2021-11-17 07:47:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:47:35,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:47:35,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:47:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:47:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:47:35,624 INFO L87 Difference]: Start difference. First operand has 2126 states, 1431 states have (on average 1.443046820405311) internal successors, (2065), 1534 states have internal predecessors, (2065), 623 states have call successors, (623), 72 states have call predecessors, (623), 71 states have return successors, (616), 547 states have call predecessors, (616), 616 states have call successors, (616) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-17 07:47:37,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:39,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:41,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:44,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:46,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:48,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:50,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:52,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:56,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:47:59,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:05,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:10,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:15,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:48:31,590 INFO L93 Difference]: Finished difference Result 6971 states and 11235 transitions. [2021-11-17 07:48:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:48:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 129 [2021-11-17 07:48:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:48:31,667 INFO L225 Difference]: With dead ends: 6971 [2021-11-17 07:48:31,667 INFO L226 Difference]: Without dead ends: 4857 [2021-11-17 07:48:31,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:48:31,695 INFO L933 BasicCegarLoop]: 3703 mSDtfsCounter, 4909 mSDsluCounter, 4612 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 2311 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5518 SdHoareTripleChecker+Valid, 8315 SdHoareTripleChecker+Invalid, 4782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2311 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.1s IncrementalHoareTripleChecker+Time [2021-11-17 07:48:31,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5518 Valid, 8315 Invalid, 4782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2311 Valid, 2460 Invalid, 11 Unknown, 0 Unchecked, 55.1s Time] [2021-11-17 07:48:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-11-17 07:48:32,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 4336. [2021-11-17 07:48:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 2916 states have (on average 1.4519890260631) internal successors, (4234), 3119 states have internal predecessors, (4234), 1276 states have call successors, (1276), 135 states have call predecessors, (1276), 143 states have return successors, (1412), 1145 states have call predecessors, (1412), 1272 states have call successors, (1412) [2021-11-17 07:48:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 6922 transitions. [2021-11-17 07:48:32,082 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 6922 transitions. Word has length 129 [2021-11-17 07:48:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:48:32,084 INFO L470 AbstractCegarLoop]: Abstraction has 4336 states and 6922 transitions. [2021-11-17 07:48:32,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-17 07:48:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 6922 transitions. [2021-11-17 07:48:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-17 07:48:32,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:48:32,181 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2021-11-17 07:48:32,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 07:48:32,181 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:48:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:48:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2106831023, now seen corresponding path program 1 times [2021-11-17 07:48:32,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:48:32,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736366060] [2021-11-17 07:48:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:48:32,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:48:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:48:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:48:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:48:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:48:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:48:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:48:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:48:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:48:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:48:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:48:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:48:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:48:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:48:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:48:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:48:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:48:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:48:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:48:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:48:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-11-17 07:48:32,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:48:32,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736366060] [2021-11-17 07:48:32,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736366060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:48:32,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:48:32,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:48:32,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475622627] [2021-11-17 07:48:32,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:48:32,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:48:32,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:48:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:48:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:48:32,789 INFO L87 Difference]: Start difference. First operand 4336 states and 6922 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 07:48:36,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:38,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:41,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:43,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:45,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:47,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:51,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:48:54,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:01,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:06,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:49:24,571 INFO L93 Difference]: Finished difference Result 9648 states and 15729 transitions. [2021-11-17 07:49:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:49:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 188 [2021-11-17 07:49:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:49:24,637 INFO L225 Difference]: With dead ends: 9648 [2021-11-17 07:49:24,637 INFO L226 Difference]: Without dead ends: 7123 [2021-11-17 07:49:24,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:49:24,665 INFO L933 BasicCegarLoop]: 5709 mSDtfsCounter, 3896 mSDsluCounter, 4884 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 1827 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 10593 SdHoareTripleChecker+Invalid, 4303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1827 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2021-11-17 07:49:24,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4492 Valid, 10593 Invalid, 4303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1827 Valid, 2466 Invalid, 10 Unknown, 0 Unchecked, 51.0s Time] [2021-11-17 07:49:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2021-11-17 07:49:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6131. [2021-11-17 07:49:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6131 states, 4140 states have (on average 1.4492753623188406) internal successors, (6000), 4417 states have internal predecessors, (6000), 1783 states have call successors, (1783), 199 states have call predecessors, (1783), 207 states have return successors, (1925), 1604 states have call predecessors, (1925), 1779 states have call successors, (1925) [2021-11-17 07:49:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 9708 transitions. [2021-11-17 07:49:25,051 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 9708 transitions. Word has length 188 [2021-11-17 07:49:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:49:25,051 INFO L470 AbstractCegarLoop]: Abstraction has 6131 states and 9708 transitions. [2021-11-17 07:49:25,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 07:49:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 9708 transitions. [2021-11-17 07:49:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-17 07:49:25,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:49:25,074 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2021-11-17 07:49:25,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 07:49:25,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:49:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:49:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -264908239, now seen corresponding path program 1 times [2021-11-17 07:49:25,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:49:25,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705946807] [2021-11-17 07:49:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:49:25,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:49:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:49:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:49:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:49:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:49:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:49:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:49:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:49:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:49:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:49:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:49:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:49:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:49:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:49:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:49:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:49:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:49:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:49:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:49:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:49:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-17 07:49:25,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:49:25,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705946807] [2021-11-17 07:49:25,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705946807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:49:25,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:49:25,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:49:25,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800261340] [2021-11-17 07:49:25,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:49:25,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:49:25,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:49:25,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:49:25,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:49:25,979 INFO L87 Difference]: Start difference. First operand 6131 states and 9708 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 07:49:27,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:31,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:33,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:35,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:37,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:39,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:41,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:42,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:43,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:45,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:50,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:49:55,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:10,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:19,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:50:33,828 INFO L93 Difference]: Finished difference Result 8054 states and 13171 transitions. [2021-11-17 07:50:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:50:33,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 188 [2021-11-17 07:50:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:50:33,901 INFO L225 Difference]: With dead ends: 8054 [2021-11-17 07:50:33,901 INFO L226 Difference]: Without dead ends: 8052 [2021-11-17 07:50:33,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:50:33,915 INFO L933 BasicCegarLoop]: 3489 mSDtfsCounter, 4234 mSDsluCounter, 8467 mSDsCounter, 0 mSdLazyCounter, 3896 mSolverCounterSat, 1963 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 11956 SdHoareTripleChecker+Invalid, 5868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1963 IncrementalHoareTripleChecker+Valid, 3896 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2021-11-17 07:50:33,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4662 Valid, 11956 Invalid, 5868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1963 Valid, 3896 Invalid, 9 Unknown, 0 Unchecked, 66.6s Time] [2021-11-17 07:50:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8052 states. [2021-11-17 07:50:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8052 to 6840. [2021-11-17 07:50:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6840 states, 4656 states have (on average 1.4540378006872852) internal successors, (6770), 4969 states have internal predecessors, (6770), 1948 states have call successors, (1948), 229 states have call predecessors, (1948), 235 states have return successors, (2067), 1740 states have call predecessors, (2067), 1944 states have call successors, (2067) [2021-11-17 07:50:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6840 states to 6840 states and 10785 transitions. [2021-11-17 07:50:34,297 INFO L78 Accepts]: Start accepts. Automaton has 6840 states and 10785 transitions. Word has length 188 [2021-11-17 07:50:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:50:34,298 INFO L470 AbstractCegarLoop]: Abstraction has 6840 states and 10785 transitions. [2021-11-17 07:50:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 07:50:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6840 states and 10785 transitions. [2021-11-17 07:50:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-17 07:50:34,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:50:34,323 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2021-11-17 07:50:34,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 07:50:34,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:50:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:50:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -711069716, now seen corresponding path program 1 times [2021-11-17 07:50:34,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:50:34,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36173033] [2021-11-17 07:50:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:50:34,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:50:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:50:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:50:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:50:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:50:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:50:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:50:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:50:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:50:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:50:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:50:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:50:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:50:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:50:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:50:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:50:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:50:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:50:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:50:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 07:50:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:50:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-17 07:50:35,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:50:35,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36173033] [2021-11-17 07:50:35,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36173033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:50:35,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:50:35,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:50:35,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852770540] [2021-11-17 07:50:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:50:35,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:50:35,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:50:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:50:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:50:35,156 INFO L87 Difference]: Start difference. First operand 6840 states and 10785 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 07:50:37,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:40,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:42,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:45,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:47,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:48,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:50,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:52,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:54,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:50:56,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:01,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:06,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:21,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:30,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:51:45,461 INFO L93 Difference]: Finished difference Result 8058 states and 13174 transitions. [2021-11-17 07:51:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:51:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 4 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 193 [2021-11-17 07:51:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:51:45,520 INFO L225 Difference]: With dead ends: 8058 [2021-11-17 07:51:45,520 INFO L226 Difference]: Without dead ends: 8056 [2021-11-17 07:51:45,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:51:45,577 INFO L933 BasicCegarLoop]: 3499 mSDtfsCounter, 4225 mSDsluCounter, 8487 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 1962 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 11986 SdHoareTripleChecker+Invalid, 5867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1962 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.1s IncrementalHoareTripleChecker+Time [2021-11-17 07:51:45,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 11986 Invalid, 5867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1962 Valid, 3894 Invalid, 11 Unknown, 0 Unchecked, 69.1s Time] [2021-11-17 07:51:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-11-17 07:51:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6844. [2021-11-17 07:51:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6844 states, 4659 states have (on average 1.4537454389353939) internal successors, (6773), 4972 states have internal predecessors, (6773), 1948 states have call successors, (1948), 230 states have call predecessors, (1948), 236 states have return successors, (2067), 1740 states have call predecessors, (2067), 1944 states have call successors, (2067) [2021-11-17 07:51:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 10788 transitions. [2021-11-17 07:51:45,889 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 10788 transitions. Word has length 193 [2021-11-17 07:51:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:51:45,890 INFO L470 AbstractCegarLoop]: Abstraction has 6844 states and 10788 transitions. [2021-11-17 07:51:45,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 07:51:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 10788 transitions. [2021-11-17 07:51:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-17 07:51:45,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:51:45,917 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 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] [2021-11-17 07:51:45,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 07:51:45,918 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:51:45,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:51:45,918 INFO L85 PathProgramCache]: Analyzing trace with hash -856209711, now seen corresponding path program 1 times [2021-11-17 07:51:45,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:51:45,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691160198] [2021-11-17 07:51:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:51:45,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:51:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:51:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:51:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:51:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:51:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:51:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:51:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:51:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:51:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:51:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:51:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:51:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:51:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:51:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:51:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:51:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:51:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:51:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:51:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 07:51:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 07:51:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:51:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-17 07:51:46,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:51:46,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691160198] [2021-11-17 07:51:46,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691160198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:51:46,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:51:46,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:51:46,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400719994] [2021-11-17 07:51:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:51:46,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:51:46,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:51:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:51:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:51:46,776 INFO L87 Difference]: Start difference. First operand 6844 states and 10788 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 07:51:48,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:52,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:54,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:56,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:51:58,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:00,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:02,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:03,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:04,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:06,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:12,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:17,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:32,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:41,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:52:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:52:56,174 INFO L93 Difference]: Finished difference Result 8062 states and 13177 transitions. [2021-11-17 07:52:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:52:56,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (22), 4 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 198 [2021-11-17 07:52:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:52:56,224 INFO L225 Difference]: With dead ends: 8062 [2021-11-17 07:52:56,225 INFO L226 Difference]: Without dead ends: 8060 [2021-11-17 07:52:56,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:52:56,235 INFO L933 BasicCegarLoop]: 3495 mSDtfsCounter, 4224 mSDsluCounter, 8472 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 1959 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 11967 SdHoareTripleChecker+Invalid, 5864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1959 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.2s IncrementalHoareTripleChecker+Time [2021-11-17 07:52:56,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 11967 Invalid, 5864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1959 Valid, 3894 Invalid, 11 Unknown, 0 Unchecked, 68.2s Time] [2021-11-17 07:52:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-11-17 07:52:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 6848. [2021-11-17 07:52:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6848 states, 4662 states have (on average 1.4534534534534536) internal successors, (6776), 4975 states have internal predecessors, (6776), 1948 states have call successors, (1948), 231 states have call predecessors, (1948), 237 states have return successors, (2067), 1740 states have call predecessors, (2067), 1944 states have call successors, (2067) [2021-11-17 07:52:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6848 states to 6848 states and 10791 transitions. [2021-11-17 07:52:56,560 INFO L78 Accepts]: Start accepts. Automaton has 6848 states and 10791 transitions. Word has length 198 [2021-11-17 07:52:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:52:56,560 INFO L470 AbstractCegarLoop]: Abstraction has 6848 states and 10791 transitions. [2021-11-17 07:52:56,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 07:52:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6848 states and 10791 transitions. [2021-11-17 07:52:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-17 07:52:56,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:52:56,584 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:52:56,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 07:52:56,585 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:52:56,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:52:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1229024071, now seen corresponding path program 1 times [2021-11-17 07:52:56,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:52:56,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287479315] [2021-11-17 07:52:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:52:56,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:52:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:52:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:52:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:52:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:52:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:52:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:52:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:52:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:52:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:52:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:52:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:52:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:52:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:52:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:52:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:52:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:52:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:52:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 07:52:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:52:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 07:52:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 07:52:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-11-17 07:52:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-17 07:52:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:52:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-17 07:52:57,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:52:57,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287479315] [2021-11-17 07:52:57,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287479315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:52:57,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:52:57,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 07:52:57,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116637937] [2021-11-17 07:52:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:52:57,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 07:52:57,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:52:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 07:52:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:52:57,244 INFO L87 Difference]: Start difference. First operand 6848 states and 10791 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 07:52:59,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:01,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:03,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:07,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:09,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:12,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:14,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:16,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:18,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:20,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:22,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:29,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:34,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:36,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:39,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:43,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:45,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:53:53,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:02,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:08,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:09,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:14,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:37,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:42,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:48,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:54:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:54:59,260 INFO L93 Difference]: Finished difference Result 15344 states and 24801 transitions. [2021-11-17 07:54:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:54:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 212 [2021-11-17 07:54:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:54:59,327 INFO L225 Difference]: With dead ends: 15344 [2021-11-17 07:54:59,327 INFO L226 Difference]: Without dead ends: 10307 [2021-11-17 07:54:59,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-17 07:54:59,372 INFO L933 BasicCegarLoop]: 5077 mSDtfsCounter, 5543 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 6302 mSolverCounterSat, 4596 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6037 SdHoareTripleChecker+Valid, 7569 SdHoareTripleChecker+Invalid, 10919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4596 IncrementalHoareTripleChecker+Valid, 6302 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.4s IncrementalHoareTripleChecker+Time [2021-11-17 07:54:59,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6037 Valid, 7569 Invalid, 10919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4596 Valid, 6302 Invalid, 21 Unknown, 0 Unchecked, 120.4s Time] [2021-11-17 07:54:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2021-11-17 07:54:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 8676. [2021-11-17 07:54:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8676 states, 5900 states have (on average 1.450508474576271) internal successors, (8558), 6289 states have internal predecessors, (8558), 2471 states have call successors, (2471), 295 states have call predecessors, (2471), 304 states have return successors, (2607), 2216 states have call predecessors, (2607), 2467 states have call successors, (2607) [2021-11-17 07:54:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8676 states to 8676 states and 13636 transitions. [2021-11-17 07:54:59,850 INFO L78 Accepts]: Start accepts. Automaton has 8676 states and 13636 transitions. Word has length 212 [2021-11-17 07:54:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:54:59,852 INFO L470 AbstractCegarLoop]: Abstraction has 8676 states and 13636 transitions. [2021-11-17 07:54:59,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 07:54:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8676 states and 13636 transitions. [2021-11-17 07:54:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-17 07:54:59,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:54:59,871 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 07:54:59,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 07:54:59,871 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:54:59,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:54:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash -857305396, now seen corresponding path program 1 times [2021-11-17 07:54:59,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:54:59,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134985560] [2021-11-17 07:54:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:54:59,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:54:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:55:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:55:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:55:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:55:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:55:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:55:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:55:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:55:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:55:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:55:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:55:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:55:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:55:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:55:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:55:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:55:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:55:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 07:55:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 07:55:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 07:55:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-17 07:55:00,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:55:00,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134985560] [2021-11-17 07:55:00,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134985560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:55:00,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:55:00,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:55:00,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105654482] [2021-11-17 07:55:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:55:00,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:55:00,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:55:00,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:55:00,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:55:00,738 INFO L87 Difference]: Start difference. First operand 8676 states and 13636 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 07:55:02,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:06,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:08,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:10,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:12,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:16,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:18,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:20,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:22,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:27,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:32,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:47,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:56,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:11,879 INFO L93 Difference]: Finished difference Result 10282 states and 16789 transitions. [2021-11-17 07:56:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:56:11,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 203 [2021-11-17 07:56:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:11,946 INFO L225 Difference]: With dead ends: 10282 [2021-11-17 07:56:11,947 INFO L226 Difference]: Without dead ends: 10280 [2021-11-17 07:56:11,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:56:11,964 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 4224 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 1964 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 11997 SdHoareTripleChecker+Invalid, 5869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1964 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.8s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:11,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4645 Valid, 11997 Invalid, 5869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1964 Valid, 3893 Invalid, 12 Unknown, 0 Unchecked, 69.8s Time] [2021-11-17 07:56:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2021-11-17 07:56:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 8680. [2021-11-17 07:56:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8680 states, 5903 states have (on average 1.4502795188887008) internal successors, (8561), 6292 states have internal predecessors, (8561), 2471 states have call successors, (2471), 296 states have call predecessors, (2471), 305 states have return successors, (2607), 2216 states have call predecessors, (2607), 2467 states have call successors, (2607) [2021-11-17 07:56:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 13639 transitions. [2021-11-17 07:56:12,501 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 13639 transitions. Word has length 203 [2021-11-17 07:56:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:12,501 INFO L470 AbstractCegarLoop]: Abstraction has 8680 states and 13639 transitions. [2021-11-17 07:56:12,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 07:56:12,502 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 13639 transitions. [2021-11-17 07:56:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 07:56:12,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:12,522 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 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] [2021-11-17 07:56:12,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 07:56:12,522 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:56:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1054417777, now seen corresponding path program 1 times [2021-11-17 07:56:12,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:12,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214982253] [2021-11-17 07:56:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:12,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:56:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:56:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:56:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:56:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:56:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:56:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:56:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:56:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 07:56:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 07:56:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 07:56:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-17 07:56:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2021-11-17 07:56:13,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:13,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214982253] [2021-11-17 07:56:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214982253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:13,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:13,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:56:13,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700645703] [2021-11-17 07:56:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:13,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:56:13,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:56:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:56:13,284 INFO L87 Difference]: Start difference. First operand 8680 states and 13639 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 07:56:15,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:18,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:20,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:23,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:25,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:27,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:29,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:30,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:31,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:33,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:38,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:44,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:58,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:07,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:23,370 INFO L93 Difference]: Finished difference Result 10286 states and 16792 transitions. [2021-11-17 07:57:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:57:23,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (24), 4 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 208 [2021-11-17 07:57:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:23,431 INFO L225 Difference]: With dead ends: 10286 [2021-11-17 07:57:23,432 INFO L226 Difference]: Without dead ends: 10282 [2021-11-17 07:57:23,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:23,442 INFO L933 BasicCegarLoop]: 3500 mSDtfsCounter, 4226 mSDsluCounter, 8490 mSDsCounter, 0 mSdLazyCounter, 3895 mSolverCounterSat, 1962 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 11990 SdHoareTripleChecker+Invalid, 5867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1962 IncrementalHoareTripleChecker+Valid, 3895 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.7s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:23,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4647 Valid, 11990 Invalid, 5867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1962 Valid, 3895 Invalid, 10 Unknown, 0 Unchecked, 68.7s Time] [2021-11-17 07:57:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10282 states. [2021-11-17 07:57:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10282 to 8682. [2021-11-17 07:57:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 5905 states have (on average 1.4499576629974598) internal successors, (8562), 6293 states have internal predecessors, (8562), 2471 states have call successors, (2471), 297 states have call predecessors, (2471), 305 states have return successors, (2607), 2216 states have call predecessors, (2607), 2467 states have call successors, (2607) [2021-11-17 07:57:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13640 transitions. [2021-11-17 07:57:23,924 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13640 transitions. Word has length 208 [2021-11-17 07:57:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:23,924 INFO L470 AbstractCegarLoop]: Abstraction has 8682 states and 13640 transitions. [2021-11-17 07:57:23,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 07:57:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13640 transitions. [2021-11-17 07:57:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-17 07:57:23,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:23,947 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 4, 4, 4, 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] [2021-11-17 07:57:23,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 07:57:23,948 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 07:57:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash -619723348, now seen corresponding path program 1 times [2021-11-17 07:57:23,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:23,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608390431] [2021-11-17 07:57:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:23,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 07:57:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 07:57:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:57:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 07:57:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:57:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:57:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 07:57:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 07:57:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 07:57:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 07:57:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 07:57:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-17 07:57:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 07:57:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2021-11-17 07:57:24,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:24,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608390431] [2021-11-17 07:57:24,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608390431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:24,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:24,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:24,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020316437] [2021-11-17 07:57:24,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:24,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:24,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:24,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:24,734 INFO L87 Difference]: Start difference. First operand 8682 states and 13640 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 07:57:26,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:30,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:32,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:34,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:36,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:39,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:40,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:42,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:44,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:49,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:55,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15