/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:17:30,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:17:30,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:17:30,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:17:30,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:17:30,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:17:30,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:17:30,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:17:30,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:17:30,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:17:30,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:17:30,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:17:30,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:17:30,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:17:30,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:17:30,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:17:30,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:17:30,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:17:30,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:17:30,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:17:30,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:17:30,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:17:30,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:17:30,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:17:30,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:17:30,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:17:30,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:17:30,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:17:30,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:17:30,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:17:30,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:17:30,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:17:30,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:17:30,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:17:30,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:17:30,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:17:30,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:17:30,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:17:30,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:17:30,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:17:30,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:17:30,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:17:30,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:17:30,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:17:30,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:17:30,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:17:30,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:17:30,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:17:30,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:17:30,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:17:30,346 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:17:30,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:17:30,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:17:30,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:17:30,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:17:30,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:17:30,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:17:30,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:17:30,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:17:30,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:17:30,349 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:17:30,350 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:17:30,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:17:30,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:17:30,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:17:30,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:17:30,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:17:30,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:17:30,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:17:30,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:17:30,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:17:30,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:17:30,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:17:30,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:17:30,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:17:30,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:17:30,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:17:30,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:17:30,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:17:30,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:17:30,913 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:17:30,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2022-10-15 21:17:31,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9379b846f/e556a8ff669d4c928fcc96bcca231887/FLAG076a04911 [2022-10-15 21:17:32,329 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:17:32,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2022-10-15 21:17:32,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9379b846f/e556a8ff669d4c928fcc96bcca231887/FLAG076a04911 [2022-10-15 21:17:32,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9379b846f/e556a8ff669d4c928fcc96bcca231887 [2022-10-15 21:17:32,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:17:32,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:17:32,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:17:32,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:17:32,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:17:32,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:17:32" (1/1) ... [2022-10-15 21:17:32,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cf7fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:32, skipping insertion in model container [2022-10-15 21:17:32,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:17:32" (1/1) ... [2022-10-15 21:17:32,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:17:32,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:17:33,681 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069] [2022-10-15 21:17:33,682 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6070-6071] [2022-10-15 21:17:34,114 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818] [2022-10-15 21:17:35,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:17:35,752 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:17:35,975 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069] [2022-10-15 21:17:35,975 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6070-6071] [2022-10-15 21:17:35,986 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818] [2022-10-15 21:17:36,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:17:36,472 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:17:36,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36 WrapperNode [2022-10-15 21:17:36,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:17:36,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:17:36,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:17:36,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:17:36,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,771 INFO L138 Inliner]: procedures = 202, calls = 1968, calls flagged for inlining = 83, calls inlined = 44, statements flattened = 2155 [2022-10-15 21:17:36,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:17:36,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:17:36,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:17:36,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:17:36,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:17:37,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:17:37,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:17:37,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:17:37,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:17:37,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:17:37,129 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) [2022-10-15 21:17:37,141 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 [2022-10-15 21:17:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-10-15 21:17:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-10-15 21:17:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:17:37,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:17:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:17:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:17:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:17:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:17:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-15 21:17:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-15 21:17:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:17:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:17:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:17:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:17:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:17:37,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:17:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure hfcsusb_probe [2022-10-15 21:17:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure hfcsusb_probe [2022-10-15 21:17:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:17:37,224 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:17:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:17:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:17:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-15 21:17:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-15 21:17:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-15 21:17:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-15 21:17:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_start_transfer [2022-10-15 21:17:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_start_transfer [2022-10-15 21:17:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:17:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:17:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:17:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:17:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:17:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:17:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-15 21:17:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-15 21:17:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:17:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:17:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:17:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:17:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:17:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel [2022-10-15 21:17:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel [2022-10-15 21:17:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel [2022-10-15 21:17:37,229 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel [2022-10-15 21:17:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-15 21:17:37,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-15 21:17:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:17:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure handle_led [2022-10-15 21:17:37,231 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_led [2022-10-15 21:17:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_initdchannel [2022-10-15 21:17:37,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_initdchannel [2022-10-15 21:17:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:17:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:17:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:17:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure stop_iso_gracefull [2022-10-15 21:17:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_iso_gracefull [2022-10-15 21:17:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:17:37,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:17:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-15 21:17:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-15 21:17:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:17:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:17:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:17:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-10-15 21:17:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-10-15 21:17:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:17:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-10-15 21:17:37,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-10-15 21:17:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:17:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure set_led_bit [2022-10-15 21:17:37,240 INFO L138 BoogieDeclarations]: Found implementation of procedure set_led_bit [2022-10-15 21:17:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:17:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event [2022-10-15 21:17:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event [2022-10-15 21:17:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure hfcsusb_stop_endpoint [2022-10-15 21:17:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure hfcsusb_stop_endpoint [2022-10-15 21:17:37,242 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-15 21:17:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-15 21:17:37,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:17:37,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:17:37,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:17:37,949 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:17:37,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:17:38,299 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:17:44,026 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:17:44,055 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:17:44,055 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:17:44,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:17:44 BoogieIcfgContainer [2022-10-15 21:17:44,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:17:44,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:17:44,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:17:44,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:17:44,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:17:32" (1/3) ... [2022-10-15 21:17:44,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8f49b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:17:44, skipping insertion in model container [2022-10-15 21:17:44,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (2/3) ... [2022-10-15 21:17:44,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8f49b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:17:44, skipping insertion in model container [2022-10-15 21:17:44,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:17:44" (3/3) ... [2022-10-15 21:17:44,077 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2022-10-15 21:17:44,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:17:44,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-10-15 21:17:44,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:17:44,227 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62880964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:17:44,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-10-15 21:17:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 645 states, 441 states have (on average 1.469387755102041) internal successors, (648), 525 states have internal predecessors, (648), 95 states have call successors, (95), 33 states have call predecessors, (95), 32 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-10-15 21:17:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 21:17:44,251 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:17:44,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:17:44,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting hfcsusb_probeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_regErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2022-10-15 21:17:44,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:17:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash -282136559, now seen corresponding path program 1 times [2022-10-15 21:17:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:17:44,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030064513] [2022-10-15 21:17:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:17:44,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:17:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:17:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:17:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:17:45,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030064513] [2022-10-15 21:17:45,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030064513] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:17:45,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:17:45,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:17:45,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291908186] [2022-10-15 21:17:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:17:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:17:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:17:45,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:17:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:17:45,286 INFO L87 Difference]: Start difference. First operand has 645 states, 441 states have (on average 1.469387755102041) internal successors, (648), 525 states have internal predecessors, (648), 95 states have call successors, (95), 33 states have call predecessors, (95), 32 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 21:17:49,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:17:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:17:49,348 INFO L93 Difference]: Finished difference Result 1384 states and 1845 transitions. [2022-10-15 21:17:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:17:49,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-10-15 21:17:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:17:49,398 INFO L225 Difference]: With dead ends: 1384 [2022-10-15 21:17:49,398 INFO L226 Difference]: Without dead ends: 719 [2022-10-15 21:17:49,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:17:49,422 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 246 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:17:49,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1596 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-10-15 21:17:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-10-15 21:17:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 653. [2022-10-15 21:17:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 452 states have (on average 1.4579646017699115) internal successors, (659), 531 states have internal predecessors, (659), 92 states have call successors, (92), 33 states have call predecessors, (92), 33 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-10-15 21:17:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 843 transitions. [2022-10-15 21:17:49,615 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 843 transitions. Word has length 23 [2022-10-15 21:17:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:17:49,616 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 843 transitions. [2022-10-15 21:17:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 21:17:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 843 transitions. [2022-10-15 21:17:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 21:17:49,619 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:17:49,620 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:17:49,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:17:49,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting hfcsusb_probeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_regErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2022-10-15 21:17:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:17:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1218764271, now seen corresponding path program 1 times [2022-10-15 21:17:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:17:49,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968089378] [2022-10-15 21:17:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:17:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:17:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:17:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:17:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:17:50,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:17:50,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968089378] [2022-10-15 21:17:50,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968089378] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:17:50,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:17:50,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:17:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299723702] [2022-10-15 21:17:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:17:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:17:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:17:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:17:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:17:50,145 INFO L87 Difference]: Start difference. First operand 653 states and 843 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:17:54,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:17:57,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:17:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:17:57,365 INFO L93 Difference]: Finished difference Result 1603 states and 2140 transitions. [2022-10-15 21:17:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:17:57,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-10-15 21:17:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:17:57,392 INFO L225 Difference]: With dead ends: 1603 [2022-10-15 21:17:57,393 INFO L226 Difference]: Without dead ends: 966 [2022-10-15 21:17:57,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:17:57,403 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 439 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 152 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:17:57,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1556 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 751 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-10-15 21:17:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-10-15 21:17:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 731. [2022-10-15 21:17:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 525 states have (on average 1.4704761904761905) internal successors, (772), 604 states have internal predecessors, (772), 97 states have call successors, (97), 33 states have call predecessors, (97), 33 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-10-15 21:17:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 966 transitions. [2022-10-15 21:17:57,497 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 966 transitions. Word has length 42 [2022-10-15 21:17:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:17:57,498 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 966 transitions. [2022-10-15 21:17:57,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:17:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 966 transitions. [2022-10-15 21:17:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 21:17:57,510 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:17:57,510 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:17:57,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:17:57,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_regErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2022-10-15 21:17:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:17:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1741904026, now seen corresponding path program 1 times [2022-10-15 21:17:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:17:57,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088998057] [2022-10-15 21:17:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:17:57,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:17:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:17:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:17:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:17:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:17:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:17:58,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088998057] [2022-10-15 21:17:58,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088998057] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:17:58,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:17:58,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:17:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248458851] [2022-10-15 21:17:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:17:58,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:17:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:17:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:17:58,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:17:58,095 INFO L87 Difference]: Start difference. First operand 731 states and 966 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:18:04,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:06,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:08,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:10,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:10,951 INFO L93 Difference]: Finished difference Result 1578 states and 2131 transitions. [2022-10-15 21:18:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:18:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-10-15 21:18:10,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:10,967 INFO L225 Difference]: With dead ends: 1578 [2022-10-15 21:18:10,968 INFO L226 Difference]: Without dead ends: 1574 [2022-10-15 21:18:10,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:18:10,977 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 1168 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 267 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:10,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1895 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1208 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2022-10-15 21:18:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-10-15 21:18:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1370. [2022-10-15 21:18:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1038 states have (on average 1.4710982658959537) internal successors, (1527), 1121 states have internal predecessors, (1527), 192 states have call successors, (192), 64 states have call predecessors, (192), 64 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2022-10-15 21:18:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1911 transitions. [2022-10-15 21:18:11,179 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1911 transitions. Word has length 44 [2022-10-15 21:18:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:11,180 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1911 transitions. [2022-10-15 21:18:11,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:18:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1911 transitions. [2022-10-15 21:18:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-15 21:18:11,182 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:11,183 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:18:11,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:18:11,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting hfcsusb_probeErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_regErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2022-10-15 21:18:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1518302513, now seen corresponding path program 1 times [2022-10-15 21:18:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:11,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087841078] [2022-10-15 21:18:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:18:11,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:11,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087841078] [2022-10-15 21:18:11,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087841078] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:11,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:11,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:11,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248727668] [2022-10-15 21:18:11,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:11,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:11,593 INFO L87 Difference]: Start difference. First operand 1370 states and 1911 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:18:16,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:16,438 INFO L93 Difference]: Finished difference Result 2870 states and 4053 transitions. [2022-10-15 21:18:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:18:16,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-10-15 21:18:16,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:16,454 INFO L225 Difference]: With dead ends: 2870 [2022-10-15 21:18:16,455 INFO L226 Difference]: Without dead ends: 1516 [2022-10-15 21:18:16,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:16,468 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 205 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:16,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1568 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 655 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-10-15 21:18:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-10-15 21:18:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1390. [2022-10-15 21:18:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1058 states have (on average 1.4716446124763705) internal successors, (1557), 1141 states have internal predecessors, (1557), 192 states have call successors, (192), 64 states have call predecessors, (192), 64 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2022-10-15 21:18:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1941 transitions. [2022-10-15 21:18:16,581 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1941 transitions. Word has length 45 [2022-10-15 21:18:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:16,585 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 1941 transitions. [2022-10-15 21:18:16,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:18:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1941 transitions. [2022-10-15 21:18:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 21:18:16,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:16,591 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:18:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:18:16,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting set_led_bitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_regErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2022-10-15 21:18:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1442272195, now seen corresponding path program 1 times [2022-10-15 21:18:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:16,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379556482] [2022-10-15 21:18:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:18:17,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:17,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379556482] [2022-10-15 21:18:17,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379556482] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:17,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:17,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890359868] [2022-10-15 21:18:17,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:17,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:17,073 INFO L87 Difference]: Start difference. First operand 1390 states and 1941 transitions. 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:18:21,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:22,405 INFO L93 Difference]: Finished difference Result 2904 states and 4047 transitions. [2022-10-15 21:18:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:22,406 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-10-15 21:18:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:22,419 INFO L225 Difference]: With dead ends: 2904 [2022-10-15 21:18:22,420 INFO L226 Difference]: Without dead ends: 1530 [2022-10-15 21:18:22,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:22,430 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 765 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:22,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1403 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 698 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-10-15 21:18:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-10-15 21:18:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1420. [2022-10-15 21:18:22,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1077 states have (on average 1.4512534818941505) internal successors, (1563), 1158 states have internal predecessors, (1563), 194 states have call successors, (194), 73 states have call predecessors, (194), 73 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2022-10-15 21:18:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1951 transitions. [2022-10-15 21:18:22,587 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1951 transitions. Word has length 46 [2022-10-15 21:18:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:22,588 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1951 transitions. [2022-10-15 21:18:22,588 INFO L496 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:18:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1951 transitions. [2022-10-15 21:18:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:18:22,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:22,590 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:18:22,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:18:22,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting hfcsusb_probeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_regErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_regErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2022-10-15 21:18:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1912742190, now seen corresponding path program 1 times [2022-10-15 21:18:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118393748] [2022-10-15 21:18:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:18:23,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:23,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118393748] [2022-10-15 21:18:23,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118393748] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:18:23,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630216198] [2022-10-15 21:18:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:23,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:18:23,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:18:23,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:18:23,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:18:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:18:23,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:18:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:18:23,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:18:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-15 21:18:24,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630216198] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:18:24,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:18:24,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 21:18:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408276754] [2022-10-15 21:18:24,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:18:24,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:18:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:18:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:18:24,057 INFO L87 Difference]: Start difference. First operand 1420 states and 1951 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)