./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0 --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 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:49:41,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:49:41,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:49:41,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:49:41,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:49:41,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:49:41,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:49:41,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:49:41,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:49:41,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:49:41,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:49:41,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:49:41,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:49:41,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:49:41,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:49:41,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:49:41,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:49:41,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:49:41,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:49:41,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:49:41,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:49:41,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:49:41,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:49:41,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:49:41,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:49:41,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:49:41,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:49:41,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:49:41,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:49:41,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:49:41,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:49:41,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:49:41,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:49:41,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:49:41,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:49:41,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:49:41,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:49:41,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:49:41,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:49:41,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:49:41,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:49:41,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 14:49:41,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:49:41,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:49:41,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:49:41,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:49:41,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:49:41,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:49:41,846 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:49:41,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:49:41,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:49:41,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:49:41,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:49:41,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:49:41,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:49:41,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:49:41,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:49:41,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:49:41,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:49:41,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:49:41,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:49:41,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:49:41,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:49:41,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:49:41,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:49:41,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:49:41,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:49:41,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:49:41,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:49:41,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:49:41,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:49:41,855 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_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b [2021-11-22 14:49:42,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:49:42,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:49:42,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:49:42,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:49:42,132 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:49:42,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-22 14:49:42,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/data/3ddb868a2/51bd23bea4ae46c2a04d0e873695fc0b/FLAG1a47b8baa [2021-11-22 14:49:43,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:49:43,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-22 14:49:43,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/data/3ddb868a2/51bd23bea4ae46c2a04d0e873695fc0b/FLAG1a47b8baa [2021-11-22 14:49:43,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/data/3ddb868a2/51bd23bea4ae46c2a04d0e873695fc0b [2021-11-22 14:49:43,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:49:43,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:49:43,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:49:43,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:49:43,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:49:43,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:43" (1/1) ... [2021-11-22 14:49:43,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4592cfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:43, skipping insertion in model container [2021-11-22 14:49:43,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:43" (1/1) ... [2021-11-22 14:49:43,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:49:43,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:49:47,994 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486836,486849] [2021-11-22 14:49:47,996 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486983,486996] [2021-11-22 14:49:47,997 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487122,487135] [2021-11-22 14:49:47,998 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487280,487293] [2021-11-22 14:49:48,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:49:48,134 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:49:48,651 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486836,486849] [2021-11-22 14:49:48,652 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486983,486996] [2021-11-22 14:49:48,653 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487122,487135] [2021-11-22 14:49:48,653 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_47ef4d24-9da1-4572-84de-c3b944ee4353/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487280,487293] [2021-11-22 14:49:48,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:49:49,022 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:49:49,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49 WrapperNode [2021-11-22 14:49:49,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:49:49,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:49:49,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:49:49,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:49:49,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:49,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:54,046 INFO L137 Inliner]: procedures = 480, calls = 6076, calls flagged for inlining = 1241, calls inlined = 17531, statements flattened = 202003 [2021-11-22 14:49:54,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:49:54,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:49:54,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:49:54,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:49:54,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:54,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:55,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:55,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:57,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:58,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:58,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:59,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:49:59,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:49:59,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:49:59,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:49:59,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (1/1) ... [2021-11-22 14:49:59,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:49:59,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:49:59,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:49:59,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ef4d24-9da1-4572-84de-c3b944ee4353/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:49:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:49:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 14:49:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 14:49:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:49:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:49:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:49:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:49:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:49:59,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:49:59,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 14:49:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 14:49:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:49:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:49:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 14:49:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:49:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:49:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-22 14:50:01,173 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:50:01,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:52:06,781 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-22 14:52:06,782 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-22 14:52:06,782 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-22 14:52:06,783 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-22 14:52:06,783 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-22 14:52:06,791 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-22 14:52:06,797 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:52:06,905 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:52:06,905 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:52:06,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:52:06 BoogieIcfgContainer [2021-11-22 14:52:06,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:52:06,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:52:06,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:52:06,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:52:06,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:49:43" (1/3) ... [2021-11-22 14:52:06,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502a17e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:52:06, skipping insertion in model container [2021-11-22 14:52:06,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:49" (2/3) ... [2021-11-22 14:52:06,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502a17e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:52:06, skipping insertion in model container [2021-11-22 14:52:06,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:52:06" (3/3) ... [2021-11-22 14:52:06,946 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-22 14:52:06,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:52:06,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 14:52:07,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:52:07,111 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:52:07,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 14:52:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 34052 states, 34049 states have (on average 1.2658227848101267) internal successors, (43100), 34051 states have internal predecessors, (43100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:52:07,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:07,577 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:07,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 611394312, now seen corresponding path program 1 times [2021-11-22 14:52:07,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:07,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874695840] [2021-11-22 14:52:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:07,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:08,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:08,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874695840] [2021-11-22 14:52:08,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874695840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:08,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:08,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:52:08,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518016434] [2021-11-22 14:52:08,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:08,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:52:08,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:52:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:08,736 INFO L87 Difference]: Start difference. First operand has 34052 states, 34049 states have (on average 1.2658227848101267) internal successors, (43100), 34051 states have internal predecessors, (43100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:11,767 INFO L93 Difference]: Finished difference Result 101763 states and 128798 transitions. [2021-11-22 14:52:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:52:11,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 14:52:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:12,105 INFO L225 Difference]: With dead ends: 101763 [2021-11-22 14:52:12,105 INFO L226 Difference]: Without dead ends: 67153 [2021-11-22 14:52:12,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:12,194 INFO L933 BasicCegarLoop]: 41144 mSDtfsCounter, 40886 mSDsluCounter, 41103 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40886 SdHoareTripleChecker+Valid, 82247 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:12,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40886 Valid, 82247 Invalid, 14 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:52:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67153 states. [2021-11-22 14:52:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67153 to 67151. [2021-11-22 14:52:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67151 states, 67148 states have (on average 1.2032674093048192) internal successors, (80797), 67150 states have internal predecessors, (80797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67151 states to 67151 states and 80797 transitions. [2021-11-22 14:52:15,022 INFO L78 Accepts]: Start accepts. Automaton has 67151 states and 80797 transitions. Word has length 64 [2021-11-22 14:52:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:15,024 INFO L470 AbstractCegarLoop]: Abstraction has 67151 states and 80797 transitions. [2021-11-22 14:52:15,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 67151 states and 80797 transitions. [2021-11-22 14:52:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 14:52:15,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:15,039 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:15,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:52:15,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash -422005354, now seen corresponding path program 1 times [2021-11-22 14:52:15,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:15,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828673203] [2021-11-22 14:52:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:15,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:15,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:15,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828673203] [2021-11-22 14:52:15,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828673203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:15,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:15,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:52:15,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364476839] [2021-11-22 14:52:15,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:15,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:52:15,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:52:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:15,639 INFO L87 Difference]: Start difference. First operand 67151 states and 80797 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:18,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:18,108 INFO L93 Difference]: Finished difference Result 131584 states and 158258 transitions. [2021-11-22 14:52:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:52:18,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-22 14:52:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:18,393 INFO L225 Difference]: With dead ends: 131584 [2021-11-22 14:52:18,394 INFO L226 Difference]: Without dead ends: 64566 [2021-11-22 14:52:18,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:18,527 INFO L933 BasicCegarLoop]: 40479 mSDtfsCounter, 18546 mSDsluCounter, 40426 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18546 SdHoareTripleChecker+Valid, 80905 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:18,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18546 Valid, 80905 Invalid, 100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:52:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64566 states. [2021-11-22 14:52:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64566 to 64548. [2021-11-22 14:52:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64548 states, 64545 states have (on average 1.2016577581532264) internal successors, (77561), 64547 states have internal predecessors, (77561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64548 states to 64548 states and 77561 transitions. [2021-11-22 14:52:20,609 INFO L78 Accepts]: Start accepts. Automaton has 64548 states and 77561 transitions. Word has length 85 [2021-11-22 14:52:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:20,613 INFO L470 AbstractCegarLoop]: Abstraction has 64548 states and 77561 transitions. [2021-11-22 14:52:20,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 64548 states and 77561 transitions. [2021-11-22 14:52:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 14:52:20,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:20,619 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:20,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:52:20,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1361414267, now seen corresponding path program 1 times [2021-11-22 14:52:20,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601839787] [2021-11-22 14:52:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:20,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:21,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:21,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601839787] [2021-11-22 14:52:21,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601839787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:21,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:21,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:52:21,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508180060] [2021-11-22 14:52:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:21,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:52:21,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:52:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:21,039 INFO L87 Difference]: Start difference. First operand 64548 states and 77561 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:23,474 INFO L93 Difference]: Finished difference Result 162447 states and 195272 transitions. [2021-11-22 14:52:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:52:23,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 14:52:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:23,727 INFO L225 Difference]: With dead ends: 162447 [2021-11-22 14:52:23,728 INFO L226 Difference]: Without dead ends: 113463 [2021-11-22 14:52:23,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:23,826 INFO L933 BasicCegarLoop]: 59014 mSDtfsCounter, 40309 mSDsluCounter, 40473 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40309 SdHoareTripleChecker+Valid, 99487 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:23,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40309 Valid, 99487 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:52:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113463 states. [2021-11-22 14:52:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113463 to 113459. [2021-11-22 14:52:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113459 states, 113456 states have (on average 1.2019990128331688) internal successors, (136374), 113458 states have internal predecessors, (136374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113459 states to 113459 states and 136374 transitions. [2021-11-22 14:52:26,445 INFO L78 Accepts]: Start accepts. Automaton has 113459 states and 136374 transitions. Word has length 90 [2021-11-22 14:52:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:26,446 INFO L470 AbstractCegarLoop]: Abstraction has 113459 states and 136374 transitions. [2021-11-22 14:52:26,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 113459 states and 136374 transitions. [2021-11-22 14:52:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 14:52:26,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:26,449 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:26,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:52:26,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash 774608253, now seen corresponding path program 1 times [2021-11-22 14:52:26,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:26,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625787852] [2021-11-22 14:52:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:26,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 14:52:26,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:26,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625787852] [2021-11-22 14:52:26,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625787852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:26,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:26,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:52:26,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340097121] [2021-11-22 14:52:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:26,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:52:26,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:26,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:52:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:52:26,957 INFO L87 Difference]: Start difference. First operand 113459 states and 136374 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:29,728 INFO L93 Difference]: Finished difference Result 113459 states and 136374 transitions. [2021-11-22 14:52:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:52:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 14:52:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:30,051 INFO L225 Difference]: With dead ends: 113459 [2021-11-22 14:52:30,051 INFO L226 Difference]: Without dead ends: 98003 [2021-11-22 14:52:30,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:52:30,086 INFO L933 BasicCegarLoop]: 40492 mSDtfsCounter, 40413 mSDsluCounter, 40492 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40413 SdHoareTripleChecker+Valid, 80984 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:30,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40413 Valid, 80984 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:52:30,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98003 states. [2021-11-22 14:52:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98003 to 98003. [2021-11-22 14:52:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98003 states, 98002 states have (on average 1.202261178343299) internal successors, (117824), 98002 states have internal predecessors, (117824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98003 states to 98003 states and 117824 transitions. [2021-11-22 14:52:32,261 INFO L78 Accepts]: Start accepts. Automaton has 98003 states and 117824 transitions. Word has length 90 [2021-11-22 14:52:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:32,261 INFO L470 AbstractCegarLoop]: Abstraction has 98003 states and 117824 transitions. [2021-11-22 14:52:32,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 98003 states and 117824 transitions. [2021-11-22 14:52:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 14:52:32,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:32,274 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:32,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:52:32,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:32,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1985483221, now seen corresponding path program 1 times [2021-11-22 14:52:32,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:32,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458615390] [2021-11-22 14:52:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:32,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:32,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:32,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458615390] [2021-11-22 14:52:32,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458615390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:32,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:32,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:52:32,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622511217] [2021-11-22 14:52:32,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:32,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:52:32,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:32,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:52:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:32,817 INFO L87 Difference]: Start difference. First operand 98003 states and 117824 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:36,068 INFO L93 Difference]: Finished difference Result 211320 states and 254065 transitions. [2021-11-22 14:52:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:52:36,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-22 14:52:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:36,298 INFO L225 Difference]: With dead ends: 211320 [2021-11-22 14:52:36,299 INFO L226 Difference]: Without dead ends: 128881 [2021-11-22 14:52:36,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:52:36,395 INFO L933 BasicCegarLoop]: 59000 mSDtfsCounter, 18525 mSDsluCounter, 40398 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18525 SdHoareTripleChecker+Valid, 99398 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:36,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18525 Valid, 99398 Invalid, 92 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:52:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128881 states.