./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8cfca91e359676f221b9d3196f23901e359124e72b956d963114c00faf4f7248 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:14:26,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:14:26,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:14:26,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:14:26,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:14:26,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:14:26,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:14:26,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:14:26,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:14:26,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:14:26,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:14:26,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:14:26,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:14:26,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:14:26,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:14:26,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:14:26,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:14:26,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:14:26,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:14:26,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:14:26,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:14:26,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:14:26,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:14:26,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:14:26,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:14:26,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:14:26,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:14:26,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:14:26,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:14:26,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:14:26,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:14:26,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:14:26,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:14:26,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:14:26,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:14:26,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:14:26,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:14:26,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:14:26,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:14:26,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:14:26,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:14:26,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:14:26,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:14:26,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:14:26,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:14:26,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:14:26,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:14:26,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:14:26,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:14:26,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:14:26,923 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:14:26,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:14:26,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:14:26,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:14:26,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:14:26,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:14:26,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:14:26,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:14:26,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:14:26,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:14:26,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:14:26,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:14:26,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:14:26,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:26,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:14:26,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:14:26,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:14:26,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:14:26,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:14:26,929 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:14:26,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:14:26,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:14:26,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cfca91e359676f221b9d3196f23901e359124e72b956d963114c00faf4f7248 [2022-10-17 10:14:27,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:14:27,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:14:27,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:14:27,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:14:27,248 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:14:27,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2022-10-17 10:14:27,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/data/7d6a2c49f/b9112e07b3404a0195f2ec0f7fb80ad5/FLAG7d36842a4 [2022-10-17 10:14:28,196 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:14:28,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2022-10-17 10:14:28,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/data/7d6a2c49f/b9112e07b3404a0195f2ec0f7fb80ad5/FLAG7d36842a4 [2022-10-17 10:14:28,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/data/7d6a2c49f/b9112e07b3404a0195f2ec0f7fb80ad5 [2022-10-17 10:14:28,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:14:28,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:14:28,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:28,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:14:28,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:14:28,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:28" (1/1) ... [2022-10-17 10:14:28,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0e434e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:28, skipping insertion in model container [2022-10-17 10:14:28,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:28" (1/1) ... [2022-10-17 10:14:28,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:14:28,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:14:29,548 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2022-10-17 10:14:29,548 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2022-10-17 10:14:29,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2022-10-17 10:14:30,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:30,507 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:14:30,761 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2022-10-17 10:14:30,762 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2022-10-17 10:14:30,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2022-10-17 10:14:31,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:31,143 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:14:31,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31 WrapperNode [2022-10-17 10:14:31,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:31,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:31,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:14:31,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:14:31,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,389 INFO L138 Inliner]: procedures = 151, calls = 1509, calls flagged for inlining = 53, calls inlined = 38, statements flattened = 2223 [2022-10-17 10:14:31,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:31,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:14:31,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:14:31,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:14:31,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:14:31,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:14:31,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:14:31,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:14:31,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (1/1) ... [2022-10-17 10:14:31,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:31,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:31,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23d55df9-3108-43df-91f7-73e2c6882441/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:14:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:14:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-17 10:14:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-17 10:14:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure handle_led [2022-10-17 10:14:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_led [2022-10-17 10:14:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:14:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:14:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:14:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:14:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:14:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure start_int_fifo [2022-10-17 10:14:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure start_int_fifo [2022-10-17 10:14:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure symbolic [2022-10-17 10:14:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure symbolic [2022-10-17 10:14:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:14:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:14:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 10:14:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 10:14:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:14:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:14:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 10:14:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 10:14:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-17 10:14:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-17 10:14:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:14:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:14:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure start_isoc_chain [2022-10-17 10:14:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure start_isoc_chain [2022-10-17 10:14:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:14:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:14:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:14:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:14:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:14:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:14:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:14:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-17 10:14:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-17 10:14:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure timer_pending [2022-10-17 10:14:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_pending [2022-10-17 10:14:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:14:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-10-17 10:14:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-10-17 10:14:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:14:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure set_led_bit [2022-10-17 10:14:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure set_led_bit [2022-10-17 10:14:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:14:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:14:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-10-17 10:14:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-10-17 10:14:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:14:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-10-17 10:14:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-10-17 10:14:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-17 10:14:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-17 10:14:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_start_transfer [2022-10-17 10:14:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_start_transfer [2022-10-17 10:14:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure queue_control_request [2022-10-17 10:14:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_control_request [2022-10-17 10:14:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:14:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:14:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-10-17 10:14:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-10-17 10:14:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure fill_isoc_urb [2022-10-17 10:14:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_isoc_urb [2022-10-17 10:14:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-17 10:14:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-17 10:14:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:14:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-17 10:14:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-17 10:14:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:14:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 10:14:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 10:14:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:14:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:14:32,175 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:14:32,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:14:32,565 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:14:37,700 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:14:37,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:14:37,713 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:14:37,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:37 BoogieIcfgContainer [2022-10-17 10:14:37,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:14:37,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:14:37,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:14:37,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:14:37,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:14:28" (1/3) ... [2022-10-17 10:14:37,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fb35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:37, skipping insertion in model container [2022-10-17 10:14:37,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:31" (2/3) ... [2022-10-17 10:14:37,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fb35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:37, skipping insertion in model container [2022-10-17 10:14:37,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:37" (3/3) ... [2022-10-17 10:14:37,725 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2022-10-17 10:14:37,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:14:37,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:14:37,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:37,852 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c588c4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:37,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:14:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 393 states have (on average 1.356234096692112) internal successors, (533), 401 states have internal predecessors, (533), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-10-17 10:14:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 10:14:37,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:37,877 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, 1, 1, 1, 1, 1] [2022-10-17 10:14:37,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:37,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:37,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1275222007, now seen corresponding path program 1 times [2022-10-17 10:14:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:37,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625747825] [2022-10-17 10:14:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:14:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625747825] [2022-10-17 10:14:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625747825] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:38,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:38,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:14:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423737367] [2022-10-17 10:14:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:38,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:14:38,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:14:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:14:38,747 INFO L87 Difference]: Start difference. First operand has 528 states, 393 states have (on average 1.356234096692112) internal successors, (533), 401 states have internal predecessors, (533), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:14:42,735 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 [] [2022-10-17 10:14:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:44,793 INFO L93 Difference]: Finished difference Result 1136 states and 1627 transitions. [2022-10-17 10:14:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:14:44,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-10-17 10:14:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:44,826 INFO L225 Difference]: With dead ends: 1136 [2022-10-17 10:14:44,826 INFO L226 Difference]: Without dead ends: 590 [2022-10-17 10:14:44,836 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 [2022-10-17 10:14:44,842 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 178 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 119 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:44,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1489 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 521 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-10-17 10:14:44,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-10-17 10:14:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 551. [2022-10-17 10:14:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 415 states have (on average 1.342168674698795) internal successors, (557), 418 states have internal predecessors, (557), 105 states have call successors, (105), 31 states have call predecessors, (105), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-10-17 10:14:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 766 transitions. [2022-10-17 10:14:45,010 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 766 transitions. Word has length 28 [2022-10-17 10:14:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:45,011 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 766 transitions. [2022-10-17 10:14:45,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:14:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 766 transitions. [2022-10-17 10:14:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:14:45,014 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:45,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:45,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:14:45,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash 126943898, now seen corresponding path program 1 times [2022-10-17 10:14:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:45,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936876372] [2022-10-17 10:14:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:14:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:14:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:14:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936876372] [2022-10-17 10:14:45,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936876372] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:45,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:45,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:14:45,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081698636] [2022-10-17 10:14:45,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:14:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:14:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:14:45,490 INFO L87 Difference]: Start difference. First operand 551 states and 766 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:14:49,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:14:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:52,335 INFO L93 Difference]: Finished difference Result 1127 states and 1576 transitions. [2022-10-17 10:14:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:14:52,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-10-17 10:14:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:52,341 INFO L225 Difference]: With dead ends: 1127 [2022-10-17 10:14:52,341 INFO L226 Difference]: Without dead ends: 589 [2022-10-17 10:14:52,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:14:52,345 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 114 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:52,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1973 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 717 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-10-17 10:14:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-10-17 10:14:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 551. [2022-10-17 10:14:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 415 states have (on average 1.3397590361445784) internal successors, (556), 418 states have internal predecessors, (556), 105 states have call successors, (105), 31 states have call predecessors, (105), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-10-17 10:14:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 765 transitions. [2022-10-17 10:14:52,393 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 765 transitions. Word has length 48 [2022-10-17 10:14:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:52,394 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 765 transitions. [2022-10-17 10:14:52,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:14:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 765 transitions. [2022-10-17 10:14:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:14:52,397 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:52,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:14:52,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1678494436, now seen corresponding path program 1 times [2022-10-17 10:14:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598455880] [2022-10-17 10:14:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:14:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:14:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:14:52,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:52,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598455880] [2022-10-17 10:14:52,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598455880] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:52,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:52,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:14:52,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100072650] [2022-10-17 10:14:52,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:52,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:14:52,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:14:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:14:52,638 INFO L87 Difference]: Start difference. First operand 551 states and 765 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:14:56,753 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 [] [2022-10-17 10:14:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:58,288 INFO L93 Difference]: Finished difference Result 1253 states and 1765 transitions. [2022-10-17 10:14:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:14:58,288 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-10-17 10:14:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:58,295 INFO L225 Difference]: With dead ends: 1253 [2022-10-17 10:14:58,295 INFO L226 Difference]: Without dead ends: 718 [2022-10-17 10:14:58,298 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 [2022-10-17 10:14:58,299 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 224 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:58,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1716 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 549 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-10-17 10:14:58,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-10-17 10:14:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 558. [2022-10-17 10:14:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 422 states have (on average 1.3412322274881516) internal successors, (566), 425 states have internal predecessors, (566), 105 states have call successors, (105), 31 states have call predecessors, (105), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-10-17 10:14:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 775 transitions. [2022-10-17 10:14:58,339 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 775 transitions. Word has length 48 [2022-10-17 10:14:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:58,340 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 775 transitions. [2022-10-17 10:14:58,341 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:14:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 775 transitions. [2022-10-17 10:14:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-17 10:14:58,344 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:58,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:58,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:14:58,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1087075058, now seen corresponding path program 1 times [2022-10-17 10:14:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707573772] [2022-10-17 10:14:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:14:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:14:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:14:58,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707573772] [2022-10-17 10:14:58,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707573772] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:58,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:58,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:14:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643346150] [2022-10-17 10:14:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:58,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:14:58,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:14:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:14:58,580 INFO L87 Difference]: Start difference. First operand 558 states and 775 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)