./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:08:30,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:08:30,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:08:30,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:08:30,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:08:30,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:08:30,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:08:30,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:08:30,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:08:30,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:08:30,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:08:30,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:08:30,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:08:30,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:08:30,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:08:30,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:08:30,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:08:30,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:08:30,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:08:30,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:08:30,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:08:30,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:08:30,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:08:30,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:08:30,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:08:30,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:08:30,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:08:30,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:08:30,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:08:30,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:08:30,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:08:30,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:08:30,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:08:30,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:08:30,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:08:30,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:08:30,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:08:30,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:08:30,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:08:30,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:08:30,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:08:30,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:08:30,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:08:30,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:08:30,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:08:30,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:08:30,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:08:30,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:08:30,993 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:08:30,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:08:30,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:08:30,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:08:30,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:08:30,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:08:30,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:08:30,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:08:30,995 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:08:30,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:08:30,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:08:30,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:08:30,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:08:30,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:08:30,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:08:30,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:08:30,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:08:30,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:08:30,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:08:30,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:08:30,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:08:30,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:08:30,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:08:30,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2021-11-06 19:08:31,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:08:31,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:08:31,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:08:31,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:08:31,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:08:31,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-06 19:08:31,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8edad92/b6acbe5b0e024417abd052b292bbe093/FLAG714072d90 [2021-11-06 19:08:31,968 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:08:31,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-06 19:08:32,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8edad92/b6acbe5b0e024417abd052b292bbe093/FLAG714072d90 [2021-11-06 19:08:32,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8edad92/b6acbe5b0e024417abd052b292bbe093 [2021-11-06 19:08:32,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:08:32,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:08:32,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:08:32,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:08:32,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:08:32,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:32" (1/1) ... [2021-11-06 19:08:32,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7171bbd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:32, skipping insertion in model container [2021-11-06 19:08:32,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:32" (1/1) ... [2021-11-06 19:08:32,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:08:32,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:08:35,356 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-06 19:08:35,358 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-06 19:08:35,358 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-06 19:08:35,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-06 19:08:35,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:08:35,417 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:08:35,699 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-06 19:08:35,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-06 19:08:35,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-06 19:08:35,701 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-06 19:08:35,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:08:35,854 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:08:35,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35 WrapperNode [2021-11-06 19:08:35,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:08:35,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:08:35,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:08:35,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:08:35,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:35,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:40,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:08:40,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:08:40,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:08:40,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:08:40,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:40,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:40,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:40,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:42,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:42,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:43,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:43,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:08:43,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:08:43,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:08:43,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:08:43,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (1/1) ... [2021-11-06 19:08:43,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:08:43,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:08:43,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 19:08:43,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 19:08:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:08:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:08:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:08:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 19:13:10,142 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:13:10,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-06 19:13:10,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 19:13:10,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 19:13:10,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-06 19:13:10,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-06 19:13:10,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:13:10,145 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:13:10,147 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:13:10,149 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 19:13:10,150 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:13:10,150 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:13:10,150 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:13:10,150 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 19:13:10,154 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:13:10,164 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 19:13:10,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:13:10,249 INFO L299 CfgBuilder]: Removed 36603 assume(true) statements. [2021-11-06 19:13:10,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:13:10 BoogieIcfgContainer [2021-11-06 19:13:10,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:13:10,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:13:10,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:13:10,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:13:10,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:08:32" (1/3) ... [2021-11-06 19:13:10,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cb04a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:13:10, skipping insertion in model container [2021-11-06 19:13:10,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:35" (2/3) ... [2021-11-06 19:13:10,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cb04a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:13:10, skipping insertion in model container [2021-11-06 19:13:10,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:13:10" (3/3) ... [2021-11-06 19:13:10,287 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-06 19:13:10,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:13:10,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1395 error locations. [2021-11-06 19:13:10,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:13:10,434 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 [2021-11-06 19:13:10,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1395 error locations. [2021-11-06 19:13:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 37528 states, 36133 states have (on average 1.423297262889879) internal successors, (51428), 37527 states have internal predecessors, (51428), 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) [2021-11-06 19:13:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 19:13:10,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:13:10,817 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:13:10,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-06 19:13:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:13:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1318740019, now seen corresponding path program 1 times [2021-11-06 19:13:10,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:13:10,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002485105] [2021-11-06 19:13:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:13:10,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:13:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:13:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:13:11,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:13:11,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002485105] [2021-11-06 19:13:11,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002485105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:13:11,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:13:11,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:13:11,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372255687] [2021-11-06 19:13:11,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:13:11,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:13:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:13:11,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:13:11,882 INFO L87 Difference]: Start difference. First operand has 37528 states, 36133 states have (on average 1.423297262889879) internal successors, (51428), 37527 states have internal predecessors, (51428), 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 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-11-06 19:13:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:13:16,182 INFO L93 Difference]: Finished difference Result 108443 states and 148861 transitions. [2021-11-06 19:13:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:13:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2021-11-06 19:13:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:13:16,500 INFO L225 Difference]: With dead ends: 108443 [2021-11-06 19:13:16,500 INFO L226 Difference]: Without dead ends: 67850 [2021-11-06 19:13:16,847 INFO L786 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 [2021-11-06 19:13:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67850 states. [2021-11-06 19:13:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67850 to 65114. [2021-11-06 19:13:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65114 states, 63719 states have (on average 1.235283039595725) internal successors, (78711), 65113 states have internal predecessors, (78711), 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) [2021-11-06 19:13:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65114 states to 65114 states and 78711 transitions. [2021-11-06 19:13:18,627 INFO L78 Accepts]: Start accepts. Automaton has 65114 states and 78711 transitions. Word has length 155 [2021-11-06 19:13:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:13:18,631 INFO L470 AbstractCegarLoop]: Abstraction has 65114 states and 78711 transitions. [2021-11-06 19:13:18,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-11-06 19:13:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 65114 states and 78711 transitions. [2021-11-06 19:13:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-06 19:13:18,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:13:18,641 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:13:18,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:13:18,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-06 19:13:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:13:18,644 INFO L85 PathProgramCache]: Analyzing trace with hash 542234504, now seen corresponding path program 1 times [2021-11-06 19:13:18,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:13:18,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998245526] [2021-11-06 19:13:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:13:18,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:13:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:13:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:13:19,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:13:19,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998245526] [2021-11-06 19:13:19,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998245526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:13:19,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:13:19,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:13:19,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427125081] [2021-11-06 19:13:19,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:13:19,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:13:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:13:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:13:19,057 INFO L87 Difference]: Start difference. First operand 65114 states and 78711 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-06 19:13:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:13:23,572 INFO L93 Difference]: Finished difference Result 148398 states and 178311 transitions. [2021-11-06 19:13:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:13:23,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2021-11-06 19:13:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:13:24,034 INFO L225 Difference]: With dead ends: 148398 [2021-11-06 19:13:24,034 INFO L226 Difference]: Without dead ends: 83640 [2021-11-06 19:13:24,165 INFO L786 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 [2021-11-06 19:13:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83640 states. [2021-11-06 19:13:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83640 to 81330. [2021-11-06 19:13:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81330 states, 79935 states have (on average 1.2353912553950084) internal successors, (98751), 81329 states have internal predecessors, (98751), 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) [2021-11-06 19:13:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81330 states to 81330 states and 98751 transitions. [2021-11-06 19:13:26,180 INFO L78 Accepts]: Start accepts. Automaton has 81330 states and 98751 transitions. Word has length 159 [2021-11-06 19:13:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:13:26,181 INFO L470 AbstractCegarLoop]: Abstraction has 81330 states and 98751 transitions. [2021-11-06 19:13:26,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-06 19:13:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 81330 states and 98751 transitions. [2021-11-06 19:13:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-06 19:13:26,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:13:26,185 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:13:26,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:13:26,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1252ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-06 19:13:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:13:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash 782944595, now seen corresponding path program 1 times [2021-11-06 19:13:26,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:13:26,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53197569] [2021-11-06 19:13:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:13:26,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:13:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:13:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:13:26,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:13:26,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53197569] [2021-11-06 19:13:26,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53197569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:13:26,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:13:26,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:13:26,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192595809] [2021-11-06 19:13:26,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:13:26,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:13:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:13:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:13:26,497 INFO L87 Difference]: Start difference. First operand 81330 states and 98751 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-06 19:13:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:13:30,800 INFO L93 Difference]: Finished difference Result 206696 states and 250455 transitions. [2021-11-06 19:13:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:13:30,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2021-11-06 19:13:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:13:31,167 INFO L225 Difference]: With dead ends: 206696 [2021-11-06 19:13:31,168 INFO L226 Difference]: Without dead ends: 125722 [2021-11-06 19:13:31,307 INFO L786 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 [2021-11-06 19:13:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125722 states. [2021-11-06 19:13:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125722 to 123066. [2021-11-06 19:13:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123066 states, 121671 states have (on average 1.23843808302718) internal successors, (150682), 123065 states have internal predecessors, (150682), 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) [2021-11-06 19:13:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123066 states to 123066 states and 150682 transitions. [2021-11-06 19:13:34,473 INFO L78 Accepts]: Start accepts. Automaton has 123066 states and 150682 transitions. Word has length 160 [2021-11-06 19:13:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:13:34,473 INFO L470 AbstractCegarLoop]: Abstraction has 123066 states and 150682 transitions. [2021-11-06 19:13:34,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-06 19:13:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 123066 states and 150682 transitions. [2021-11-06 19:13:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-06 19:13:34,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:13:34,476 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:13:34,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:13:34,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr625ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-06 19:13:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:13:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1704234779, now seen corresponding path program 1 times [2021-11-06 19:13:34,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:13:34,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050151834] [2021-11-06 19:13:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:13:34,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:13:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:13:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:13:34,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:13:34,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050151834] [2021-11-06 19:13:34,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050151834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:13:34,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:13:34,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:13:34,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816597648] [2021-11-06 19:13:34,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:13:34,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:13:34,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:13:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:13:34,775 INFO L87 Difference]: Start difference. First operand 123066 states and 150682 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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)