./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.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 e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:19:16,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:19:16,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:19:16,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:19:16,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:19:16,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:19:16,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:19:16,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:19:16,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:19:16,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:19:16,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:19:16,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:19:16,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:19:16,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:19:16,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:19:16,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:19:16,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:19:16,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:19:16,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:19:16,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:19:16,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:19:16,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:19:16,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:19:16,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:19:16,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:19:16,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:19:16,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:19:16,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:19:16,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:19:16,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:19:16,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:19:16,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:19:16,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:19:16,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:19:16,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:19:16,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:19:16,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:19:16,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:19:16,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:19:16,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:19:16,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:19:16,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:19:16,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:19:16,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:19:16,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:19:16,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:19:16,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:19:16,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:19:16,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:19:16,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:19:16,922 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:19:16,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:19:16,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:19:16,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:19:16,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:19:16,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:19:16,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:19:16,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:19:16,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:19:16,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:19:16,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:19:16,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:19:16,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:19:16,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:19:16,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:19:16,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:19:16,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 [2021-12-14 18:19:17,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:19:17,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:19:17,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:19:17,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:19:17,126 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:19:17,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-12-14 18:19:17,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca2bcdd9/19693c36ca6b4c41a9c69cecd5b85696/FLAGd13f67faf [2021-12-14 18:19:17,791 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:19:17,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-12-14 18:19:17,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca2bcdd9/19693c36ca6b4c41a9c69cecd5b85696/FLAGd13f67faf [2021-12-14 18:19:18,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca2bcdd9/19693c36ca6b4c41a9c69cecd5b85696 [2021-12-14 18:19:18,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:19:18,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:19:18,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:19:18,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:19:18,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:19:18,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:18" (1/1) ... [2021-12-14 18:19:18,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:18, skipping insertion in model container [2021-12-14 18:19:18,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:18" (1/1) ... [2021-12-14 18:19:18,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:19:18,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:19:19,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-12-14 18:19:19,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:19:19,310 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:19:19,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-12-14 18:19:19,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:19:19,613 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:19:19,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19 WrapperNode [2021-12-14 18:19:19,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:19:19,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:19:19,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:19:19,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:19:19,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,774 INFO L137 Inliner]: procedures = 215, calls = 1656, calls flagged for inlining = 108, calls inlined = 105, statements flattened = 3102 [2021-12-14 18:19:19,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:19:19,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:19:19,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:19:19,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:19:19,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:19:19,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:19:19,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:19:19,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:19:19,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (1/1) ... [2021-12-14 18:19:19,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:19:19,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:19:19,953 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) [2021-12-14 18:19:19,958 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 [2021-12-14 18:19:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:19:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:19:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:19:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:19:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:19:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:19:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-14 18:19:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-14 18:19:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-14 18:19:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-14 18:19:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:19:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:19:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:19:19,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:19:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 18:19:19,984 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 18:19:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:19:19,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:19:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:19:19,984 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:19:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:19:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:19:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:19:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:19:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 18:19:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 18:19:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-14 18:19:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-14 18:19:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 18:19:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 18:19:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:19:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_port_read_long [2021-12-14 18:19:19,986 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_port_read_long [2021-12-14 18:19:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:19:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:19:19,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:19:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:19:19,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:19:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:19:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-14 18:19:19,987 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-14 18:19:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:19:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_adap_init [2021-12-14 18:19:19,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_adap_init [2021-12-14 18:19:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-12-14 18:19:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-12-14 18:19:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-14 18:19:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-14 18:19:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_int_common [2021-12-14 18:19:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_int_common [2021-12-14 18:19:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 18:19:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 18:19:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:19:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:19:19,989 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 18:19:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 18:19:19,990 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_rcv_flush [2021-12-14 18:19:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_rcv_flush [2021-12-14 18:19:19,990 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_get_stats [2021-12-14 18:19:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_get_stats [2021-12-14 18:19:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 18:19:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 18:19:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_update_cam [2021-12-14 18:19:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_update_cam [2021-12-14 18:19:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:19:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_dma_cmd_req [2021-12-14 18:19:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_dma_cmd_req [2021-12-14 18:19:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_dma_uninit [2021-12-14 18:19:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_dma_uninit [2021-12-14 18:19:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:19:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:19:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:19:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-14 18:19:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-14 18:19:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2021-12-14 18:19:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2021-12-14 18:19:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-14 18:19:19,993 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-14 18:19:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:19:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure my_skb_align [2021-12-14 18:19:19,993 INFO L138 BoogieDeclarations]: Found implementation of procedure my_skb_align [2021-12-14 18:19:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 18:19:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 18:19:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:19:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:19:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:19:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:19:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_port_write_long [2021-12-14 18:19:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_port_write_long [2021-12-14 18:19:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:19:19,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:19:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-14 18:19:19,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-14 18:19:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:19:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:19:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:19:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 18:19:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 18:19:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-14 18:19:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-14 18:19:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:19:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:19:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:19:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:19:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:19:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-14 18:19:19,998 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-14 18:19:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_port_ctrl_req [2021-12-14 18:19:19,998 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_port_ctrl_req [2021-12-14 18:19:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:19:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_xmt_flush [2021-12-14 18:19:19,998 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_xmt_flush [2021-12-14 18:19:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:19:19,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:19:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:19:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_update_filters [2021-12-14 18:19:19,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_update_filters [2021-12-14 18:19:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:19:20,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:19:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_set_mac_address [2021-12-14 18:19:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_set_mac_address [2021-12-14 18:19:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_set_multicast_list [2021-12-14 18:19:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_set_multicast_list [2021-12-14 18:19:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_adap_state_rd [2021-12-14 18:19:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_adap_state_rd [2021-12-14 18:19:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 18:19:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 18:19:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:19:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:19:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:19:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_get_bars [2021-12-14 18:19:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_get_bars [2021-12-14 18:19:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-12-14 18:19:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-12-14 18:19:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:19:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:19:20,546 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:19:20,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:19:21,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:19:31,588 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:19:31,603 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:19:31,604 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:19:31,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:31 BoogieIcfgContainer [2021-12-14 18:19:31,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:19:31,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:19:31,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:19:31,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:19:31,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:19:18" (1/3) ... [2021-12-14 18:19:31,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6982dfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:19:31, skipping insertion in model container [2021-12-14 18:19:31,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:19" (2/3) ... [2021-12-14 18:19:31,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6982dfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:19:31, skipping insertion in model container [2021-12-14 18:19:31,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:31" (3/3) ... [2021-12-14 18:19:31,613 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-12-14 18:19:31,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:19:31,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:19:31,659 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:19:31,664 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 [2021-12-14 18:19:31,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:19:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 1115 states, 780 states have (on average 1.3205128205128205) internal successors, (1030), 801 states have internal predecessors, (1030), 274 states have call successors, (274), 60 states have call predecessors, (274), 59 states have return successors, (268), 268 states have call predecessors, (268), 268 states have call successors, (268) [2021-12-14 18:19:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-14 18:19:31,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:19:31,723 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:19:31,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:19:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:19:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1612545232, now seen corresponding path program 1 times [2021-12-14 18:19:31,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:19:31,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45116778] [2021-12-14 18:19:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:31,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:19:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:19:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:19:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:19:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 18:19:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 18:19:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:19:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 18:19:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 18:19:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 18:19:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 18:19:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:19:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:19:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-14 18:19:32,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:19:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45116778] [2021-12-14 18:19:32,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45116778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:19:32,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:19:32,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:19:32,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176514543] [2021-12-14 18:19:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:19:32,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:19:32,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:19:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:19:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:19:32,451 INFO L87 Difference]: Start difference. First operand has 1115 states, 780 states have (on average 1.3205128205128205) internal successors, (1030), 801 states have internal predecessors, (1030), 274 states have call successors, (274), 60 states have call predecessors, (274), 59 states have return successors, (268), 268 states have call predecessors, (268), 268 states have call successors, (268) Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-14 18:19:41,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:43,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:45,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:47,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:49,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:51,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:53,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:57,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:19:59,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:04,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:06,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:08,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:10,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:12,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:14,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:16,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:20:21,018 INFO L93 Difference]: Finished difference Result 3602 states and 5282 transitions. [2021-12-14 18:20:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:20:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2021-12-14 18:20:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:20:21,053 INFO L225 Difference]: With dead ends: 3602 [2021-12-14 18:20:21,053 INFO L226 Difference]: Without dead ends: 2450 [2021-12-14 18:20:21,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:20:21,065 INFO L933 BasicCegarLoop]: 1646 mSDtfsCounter, 3922 mSDsluCounter, 4015 mSDsCounter, 0 mSdLazyCounter, 4458 mSolverCounterSat, 3324 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 7797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3324 IncrementalHoareTripleChecker+Valid, 4458 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:20:21,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4191 Valid, 5661 Invalid, 7797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3324 Valid, 4458 Invalid, 15 Unknown, 0 Unchecked, 48.0s Time] [2021-12-14 18:20:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2021-12-14 18:20:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2177. [2021-12-14 18:20:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1527 states have (on average 1.3077930582842174) internal successors, (1997), 1553 states have internal predecessors, (1997), 532 states have call successors, (532), 118 states have call predecessors, (532), 117 states have return successors, (533), 531 states have call predecessors, (533), 531 states have call successors, (533) [2021-12-14 18:20:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3062 transitions. [2021-12-14 18:20:21,248 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3062 transitions. Word has length 153 [2021-12-14 18:20:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:20:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 2177 states and 3062 transitions. [2021-12-14 18:20:21,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-14 18:20:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3062 transitions. [2021-12-14 18:20:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-14 18:20:21,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:20:21,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:20:21,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:20:21,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:20:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:20:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1282953709, now seen corresponding path program 1 times [2021-12-14 18:20:21,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:20:21,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222111335] [2021-12-14 18:20:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:20:21,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:20:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:20:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:20:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 18:20:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 18:20:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 18:20:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:20:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:20:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 18:20:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 18:20:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 18:20:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-14 18:20:21,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:20:21,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222111335] [2021-12-14 18:20:21,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222111335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:20:21,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:20:21,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:20:21,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676707016] [2021-12-14 18:20:21,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:20:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:20:21,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:20:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:20:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:20:21,606 INFO L87 Difference]: Start difference. First operand 2177 states and 3062 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-14 18:20:25,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []