/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--usb--class--cdc-acm.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:19:47,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:19:47,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:19:47,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:19:47,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:19:47,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:19:47,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:19:47,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:19:47,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:19:47,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:19:47,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:19:47,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:19:47,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:19:47,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:19:47,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:19:47,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:19:47,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:19:47,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:19:47,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:19:47,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:19:47,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:19:47,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:19:47,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:19:47,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:19:47,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:19:47,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:19:47,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:19:47,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:19:47,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:19:47,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:19:47,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:19:47,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:19:47,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:19:47,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:19:47,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:19:47,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:19:47,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:19:47,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:19:47,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:19:47,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:19:47,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:19:47,884 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 21:19:47,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:19:47,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:19:47,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:19:47,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:19:47,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:19:47,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:19:47,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:19:47,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:19:47,922 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:19:47,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:19:47,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:19:47,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:19:47,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:19:47,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:19:47,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:19:47,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:19:47,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:19:47,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:19:47,924 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:19:47,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:19:47,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:19:47,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:19:47,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:19:47,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:19:47,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:19:47,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:19:47,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:19:47,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:19:47,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:19:47,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:19:47,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:19:47,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:19:47,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:19:47,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:19:48,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:19:48,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:19:48,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:19:48,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:19:48,410 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:19:48,412 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-10-15 21:19:48,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043f14713/5605900e34cc4f5eb81607ed43319881/FLAG5c054cf3f [2022-10-15 21:19:49,768 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:19:49,770 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-10-15 21:19:49,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043f14713/5605900e34cc4f5eb81607ed43319881/FLAG5c054cf3f [2022-10-15 21:19:50,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/043f14713/5605900e34cc4f5eb81607ed43319881 [2022-10-15 21:19:50,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:19:50,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:19:50,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:19:50,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:19:50,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:19:50,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:19:50" (1/1) ... [2022-10-15 21:19:50,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20618f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:50, skipping insertion in model container [2022-10-15 21:19:50,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:19:50" (1/1) ... [2022-10-15 21:19:50,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:19:50,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:19:50,883 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2022-10-15 21:19:50,884 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2022-10-15 21:19:51,742 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2022-10-15 21:19:53,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:19:53,264 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:19:53,435 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2022-10-15 21:19:53,436 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2022-10-15 21:19:53,469 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2022-10-15 21:19:53,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:19:54,126 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:19:54,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54 WrapperNode [2022-10-15 21:19:54,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:19:54,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:19:54,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:19:54,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:19:54,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,499 INFO L138 Inliner]: procedures = 264, calls = 3505, calls flagged for inlining = 131, calls inlined = 111, statements flattened = 6410 [2022-10-15 21:19:54,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:19:54,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:19:54,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:19:54,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:19:54,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:54,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:55,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:19:55,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:19:55,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:19:55,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:19:55,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (1/1) ... [2022-10-15 21:19:55,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:19:55,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:19:55,069 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 21:19:55,088 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 21:19:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-10-15 21:19:55,137 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-10-15 21:19:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-10-15 21:19:55,137 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-10-15 21:19:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-10-15 21:19:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-15 21:19:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-15 21:19:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:19:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:19:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-15 21:19:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:19:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:19:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:19:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:19:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-10-15 21:19:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-10-15 21:19:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-10-15 21:19:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-10-15 21:19:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-15 21:19:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-15 21:19:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-15 21:19:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-15 21:19:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:19:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:19:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-10-15 21:19:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-10-15 21:19:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-10-15 21:19:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-10-15 21:19:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-10-15 21:19:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-10-15 21:19:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-15 21:19:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-15 21:19:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-10-15 21:19:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-10-15 21:19:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:19:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:19:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-10-15 21:19:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-10-15 21:19:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-10-15 21:19:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-10-15 21:19:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:19:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:19:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:19:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:19:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:19:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:19:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-10-15 21:19:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-10-15 21:19:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-10-15 21:19:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-10-15 21:19:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-10-15 21:19:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-10-15 21:19:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:19:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-15 21:19:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-15 21:19:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-15 21:19:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-10-15 21:19:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-10-15 21:19:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-15 21:19:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-15 21:19:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:19:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-10-15 21:19:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-10-15 21:19:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-10-15 21:19:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-10-15 21:19:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-15 21:19:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-15 21:19:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-15 21:19:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-15 21:19:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:19:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:19:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-15 21:19:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-15 21:19:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-10-15 21:19:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-10-15 21:19:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-15 21:19:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-15 21:19:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-10-15 21:19:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-10-15 21:19:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:19:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:19:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-10-15 21:19:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-10-15 21:19:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2022-10-15 21:19:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2022-10-15 21:19:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:19:55,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:19:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:19:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:19:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:19:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-15 21:19:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-15 21:19:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-10-15 21:19:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-10-15 21:19:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-15 21:19:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-15 21:19:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:19:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-10-15 21:19:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-10-15 21:19:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:19:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-10-15 21:19:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-10-15 21:19:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-10-15 21:19:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-10-15 21:19:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:19:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:19:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:19:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:19:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-10-15 21:19:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-10-15 21:19:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-10-15 21:19:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-10-15 21:19:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-15 21:19:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-15 21:19:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-15 21:19:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-15 21:19:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-15 21:19:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-15 21:19:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-10-15 21:19:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-10-15 21:19:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-10-15 21:19:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-10-15 21:19:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-10-15 21:19:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-10-15 21:19:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:19:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:19:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:19:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-10-15 21:19:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-10-15 21:19:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-10-15 21:19:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-10-15 21:19:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-10-15 21:19:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-10-15 21:19:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-10-15 21:19:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-10-15 21:19:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-10-15 21:19:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-10-15 21:19:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:19:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:19:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-10-15 21:19:55,160 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-10-15 21:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-10-15 21:19:55,160 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-10-15 21:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:19:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:19:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-15 21:19:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-10-15 21:19:55,161 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-10-15 21:19:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-10-15 21:19:55,161 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-10-15 21:19:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-15 21:19:55,161 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-15 21:19:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2022-10-15 21:19:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2022-10-15 21:19:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-15 21:19:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-15 21:19:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:19:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:19:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-10-15 21:19:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-10-15 21:19:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-10-15 21:19:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-10-15 21:19:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-10-15 21:19:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-10-15 21:19:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-10-15 21:19:55,164 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-10-15 21:19:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-15 21:19:55,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-15 21:19:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-15 21:19:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-15 21:19:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:19:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-15 21:19:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-15 21:19:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-10-15 21:19:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-10-15 21:19:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-10-15 21:19:55,166 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-10-15 21:19:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:19:55,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:19:55,166 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-10-15 21:19:55,166 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-10-15 21:19:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-15 21:19:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-15 21:19:55,933 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:19:55,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:19:56,328 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:20:10,710 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:20:10,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:20:10,748 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:20:10,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:20:10 BoogieIcfgContainer [2022-10-15 21:20:10,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:20:10,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:20:10,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:20:10,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:20:10,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:19:50" (1/3) ... [2022-10-15 21:20:10,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec8593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:20:10, skipping insertion in model container [2022-10-15 21:20:10,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:19:54" (2/3) ... [2022-10-15 21:20:10,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec8593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:20:10, skipping insertion in model container [2022-10-15 21:20:10,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:20:10" (3/3) ... [2022-10-15 21:20:10,767 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-10-15 21:20:10,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:20:10,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2022-10-15 21:20:10,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:20:10,956 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;@437e948a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:20:10,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2022-10-15 21:20:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 1633 states, 1135 states have (on average 1.39647577092511) internal successors, (1585), 1235 states have internal predecessors, (1585), 330 states have call successors, (330), 82 states have call predecessors, (330), 81 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-10-15 21:20:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-15 21:20:10,992 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:20:10,994 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:10,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [acm_disconnectErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, acm_disconnectErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, acm_disconnectErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2022-10-15 21:20:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:20:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1096397595, now seen corresponding path program 1 times [2022-10-15 21:20:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:20:11,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130303606] [2022-10-15 21:20:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:20:11,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:20:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:20:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:20:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:20:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:20:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:20:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:20:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:20:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:20:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:20:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:20:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-15 21:20:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 21:20:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-15 21:20:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-15 21:20:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-15 21:20:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-15 21:20:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-10-15 21:20:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:20:12,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130303606] [2022-10-15 21:20:12,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130303606] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:20:12,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:20:12,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:20:12,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043078528] [2022-10-15 21:20:12,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:20:12,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:20:12,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:20:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:20:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:20:12,492 INFO L87 Difference]: Start difference. First operand has 1633 states, 1135 states have (on average 1.39647577092511) internal successors, (1585), 1235 states have internal predecessors, (1585), 330 states have call successors, (330), 82 states have call predecessors, (330), 81 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-15 21:20:17,056 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 21:20:19,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:20:25,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:20:28,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:20:31,119 WARN L539 Checker$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 21:20:33,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:20:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:20:38,428 INFO L93 Difference]: Finished difference Result 4414 states and 6206 transitions. [2022-10-15 21:20:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 21:20:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 109 [2022-10-15 21:20:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:20:38,495 INFO L225 Difference]: With dead ends: 4414 [2022-10-15 21:20:38,495 INFO L226 Difference]: Without dead ends: 2741 [2022-10-15 21:20:38,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-10-15 21:20:38,527 INFO L413 NwaCegarLoop]: 2248 mSDtfsCounter, 2988 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 2069 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 5716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2069 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:20:38,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3254 Valid, 5941 Invalid, 5716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2069 Valid, 3641 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2022-10-15 21:20:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2022-10-15 21:20:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2599. [2022-10-15 21:20:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 1852 states have (on average 1.367170626349892) internal successors, (2532), 1937 states have internal predecessors, (2532), 530 states have call successors, (530), 141 states have call predecessors, (530), 141 states have return successors, (530), 529 states have call predecessors, (530), 530 states have call successors, (530) [2022-10-15 21:20:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3592 transitions. [2022-10-15 21:20:38,918 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3592 transitions. Word has length 109 [2022-10-15 21:20:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:20:38,919 INFO L495 AbstractCegarLoop]: Abstraction has 2599 states and 3592 transitions. [2022-10-15 21:20:38,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-10-15 21:20:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3592 transitions. [2022-10-15 21:20:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-15 21:20:38,927 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:20:38,927 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:38,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:20:38,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW === [acm_disconnectErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, acm_disconnectErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, acm_disconnectErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2022-10-15 21:20:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:20:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash 72862978, now seen corresponding path program 1 times [2022-10-15 21:20:38,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:20:38,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035556966] [2022-10-15 21:20:38,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:20:38,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:20:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:20:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:20:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:20:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:20:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:20:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:20:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:20:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:20:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:20:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:20:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-15 21:20:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 21:20:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-15 21:20:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-15 21:20:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-15 21:20:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-15 21:20:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-10-15 21:20:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:20:40,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035556966] [2022-10-15 21:20:40,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035556966] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:20:40,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:20:40,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:20:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663649986] [2022-10-15 21:20:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:20:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:20:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:20:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:20:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:20:40,066 INFO L87 Difference]: Start difference. First operand 2599 states and 3592 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)