./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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-08_1a-drivers--net--xen-netback--xen-netback.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 f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:13:35,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:13:35,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:13:35,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:13:35,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:13:35,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:13:35,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:13:35,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:13:35,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:13:35,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:13:35,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:13:35,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:13:35,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:13:35,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:13:35,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:13:35,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:13:35,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:13:35,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:13:35,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:13:35,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:13:35,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:13:35,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:13:35,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:13:35,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:13:35,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:13:35,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:13:35,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:13:35,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:13:35,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:13:35,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:13:35,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:13:35,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:13:35,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:13:35,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:13:35,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:13:35,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:13:35,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:13:35,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:13:35,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:13:35,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:13:35,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:13:35,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:13:35,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:13:35,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:13:35,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:13:35,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:13:35,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:13:35,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:13:35,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:13:35,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:13:35,963 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:13:35,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:13:35,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:13:35,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:13:35,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:13:35,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:13:35,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:13:35,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:13:35,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:13:35,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:13:35,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:13:35,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:13:35,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:13:35,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:13:35,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:13:35,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:13:35,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:13:35,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:13:35,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:13:35,967 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:13:35,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:13:35,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:13:35,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2021-12-28 04:13:36,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:13:36,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:13:36,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:13:36,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:13:36,288 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:13:36,289 INFO L432 ainManager$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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-12-28 04:13:36,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb0cca73/7ab02c9621cd470a87c24b0e86800774/FLAGa3949e2f0 [2021-12-28 04:13:37,181 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:13:37,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-12-28 04:13:37,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb0cca73/7ab02c9621cd470a87c24b0e86800774/FLAGa3949e2f0 [2021-12-28 04:13:37,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb0cca73/7ab02c9621cd470a87c24b0e86800774 [2021-12-28 04:13:37,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:13:37,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:13:37,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:13:37,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:13:37,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:13:37,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:13:37" (1/1) ... [2021-12-28 04:13:37,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e52fc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:37, skipping insertion in model container [2021-12-28 04:13:37,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:13:37" (1/1) ... [2021-12-28 04:13:37,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:13:37,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:13:39,839 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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-12-28 04:13:39,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:13:39,945 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:13:40,606 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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-12-28 04:13:40,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:13:40,763 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:13:40,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40 WrapperNode [2021-12-28 04:13:40,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:13:40,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:13:40,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:13:40,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:13:40,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:40,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,054 INFO L137 Inliner]: procedures = 426, calls = 3455, calls flagged for inlining = 207, calls inlined = 116, statements flattened = 4483 [2021-12-28 04:13:41,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:13:41,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:13:41,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:13:41,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:13:41,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:13:41,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:13:41,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:13:41,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:13:41,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (1/1) ... [2021-12-28 04:13:41,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:13:41,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:13:41,307 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) [2021-12-28 04:13:41,327 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 [2021-12-28 04:13:41,344 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-28 04:13:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2021-12-28 04:13:41,345 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2021-12-28 04:13:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2021-12-28 04:13:41,345 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2021-12-28 04:13:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-28 04:13:41,346 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-28 04:13:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:13:41,346 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:13:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2021-12-28 04:13:41,346 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2021-12-28 04:13:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-28 04:13:41,346 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-28 04:13:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2021-12-28 04:13:41,347 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2021-12-28 04:13:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:13:41,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:13:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2021-12-28 04:13:41,347 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2021-12-28 04:13:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2021-12-28 04:13:41,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2021-12-28 04:13:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-28 04:13:41,348 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-28 04:13:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2021-12-28 04:13:41,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2021-12-28 04:13:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:13:41,348 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:13:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2021-12-28 04:13:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2021-12-28 04:13:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-28 04:13:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-28 04:13:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-28 04:13:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-28 04:13:41,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:13:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:13:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2021-12-28 04:13:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2021-12-28 04:13:41,350 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:13:41,350 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:13:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2021-12-28 04:13:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2021-12-28 04:13:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:13:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-12-28 04:13:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-12-28 04:13:41,351 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:13:41,351 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:13:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 04:13:41,352 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 04:13:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:13:41,352 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-28 04:13:41,352 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-28 04:13:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 04:13:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 04:13:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:13:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:13:41,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:13:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2021-12-28 04:13:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2021-12-28 04:13:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:13:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:13:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:13:41,355 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2021-12-28 04:13:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2021-12-28 04:13:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-12-28 04:13:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-12-28 04:13:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2021-12-28 04:13:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2021-12-28 04:13:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2021-12-28 04:13:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2021-12-28 04:13:41,356 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-28 04:13:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-28 04:13:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:13:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:13:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2021-12-28 04:13:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2021-12-28 04:13:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:13:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2021-12-28 04:13:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2021-12-28 04:13:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:13:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:13:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2021-12-28 04:13:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2021-12-28 04:13:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-28 04:13:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-28 04:13:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-28 04:13:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-28 04:13:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2021-12-28 04:13:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2021-12-28 04:13:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-28 04:13:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-28 04:13:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 04:13:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 04:13:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:13:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:13:41,361 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 04:13:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 04:13:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:13:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:13:41,362 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2021-12-28 04:13:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2021-12-28 04:13:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:13:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:13:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-12-28 04:13:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-12-28 04:13:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2021-12-28 04:13:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2021-12-28 04:13:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-28 04:13:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-28 04:13:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2021-12-28 04:13:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2021-12-28 04:13:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2021-12-28 04:13:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2021-12-28 04:13:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-28 04:13:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-28 04:13:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-12-28 04:13:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-12-28 04:13:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-28 04:13:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-28 04:13:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2021-12-28 04:13:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2021-12-28 04:13:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-12-28 04:13:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-12-28 04:13:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:13:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:13:41,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:13:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:13:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:13:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:13:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-12-28 04:13:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-12-28 04:13:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-28 04:13:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-28 04:13:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2021-12-28 04:13:41,377 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2021-12-28 04:13:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2021-12-28 04:13:41,377 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2021-12-28 04:13:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-28 04:13:41,377 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-28 04:13:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:13:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-28 04:13:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-28 04:13:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2021-12-28 04:13:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2021-12-28 04:13:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:13:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2021-12-28 04:13:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2021-12-28 04:13:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-12-28 04:13:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-12-28 04:13:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2021-12-28 04:13:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2021-12-28 04:13:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-28 04:13:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-28 04:13:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:13:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:13:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:13:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:13:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:13:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 04:13:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 04:13:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-12-28 04:13:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-12-28 04:13:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 04:13:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 04:13:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2021-12-28 04:13:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2021-12-28 04:13:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-28 04:13:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-28 04:13:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:13:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:13:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:13:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:13:41,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:13:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-12-28 04:13:41,382 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-12-28 04:13:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2021-12-28 04:13:41,382 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2021-12-28 04:13:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:13:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:13:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-28 04:13:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-28 04:13:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-28 04:13:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-28 04:13:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 04:13:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 04:13:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-28 04:13:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-28 04:13:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-28 04:13:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-28 04:13:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:13:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2021-12-28 04:13:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2021-12-28 04:13:42,024 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:13:42,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:13:42,270 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:13:47,109 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:13:47,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:13:47,129 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 04:13:47,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:13:47 BoogieIcfgContainer [2021-12-28 04:13:47,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:13:47,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:13:47,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:13:47,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:13:47,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:13:37" (1/3) ... [2021-12-28 04:13:47,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:13:47, skipping insertion in model container [2021-12-28 04:13:47,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:13:40" (2/3) ... [2021-12-28 04:13:47,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:13:47, skipping insertion in model container [2021-12-28 04:13:47,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:13:47" (3/3) ... [2021-12-28 04:13:47,138 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-12-28 04:13:47,142 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:13:47,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:13:47,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:13:47,186 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 [2021-12-28 04:13:47,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:13:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 1307 states, 948 states have (on average 1.3206751054852321) internal successors, (1252), 974 states have internal predecessors, (1252), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) [2021-12-28 04:13:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 04:13:47,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:13:47,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:13:47,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:13:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:13:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1510187125, now seen corresponding path program 1 times [2021-12-28 04:13:47,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:13:47,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319188670] [2021-12-28 04:13:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:13:47,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:13:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 04:13:47,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:13:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319188670] [2021-12-28 04:13:47,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319188670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:13:47,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:13:47,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 04:13:47,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029050832] [2021-12-28 04:13:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:13:47,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 04:13:47,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:13:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 04:13:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 04:13:47,824 INFO L87 Difference]: Start difference. First operand has 1307 states, 948 states have (on average 1.3206751054852321) internal successors, (1252), 974 states have internal predecessors, (1252), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 04:13:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:13:48,186 INFO L93 Difference]: Finished difference Result 3905 states and 5464 transitions. [2021-12-28 04:13:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 04:13:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-28 04:13:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:13:48,235 INFO L225 Difference]: With dead ends: 3905 [2021-12-28 04:13:48,235 INFO L226 Difference]: Without dead ends: 2553 [2021-12-28 04:13:48,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 04:13:48,259 INFO L933 BasicCegarLoop]: 2044 mSDtfsCounter, 1761 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:13:48,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 3814 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:13:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-12-28 04:13:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2550. [2021-12-28 04:13:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 1853 states have (on average 1.3038316243928765) internal successors, (2416), 1887 states have internal predecessors, (2416), 526 states have call successors, (526), 171 states have call predecessors, (526), 170 states have return successors, (524), 510 states have call predecessors, (524), 524 states have call successors, (524) [2021-12-28 04:13:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3466 transitions. [2021-12-28 04:13:48,473 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3466 transitions. Word has length 19 [2021-12-28 04:13:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:13:48,474 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3466 transitions. [2021-12-28 04:13:48,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 04:13:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3466 transitions. [2021-12-28 04:13:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 04:13:48,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:13:48,494 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:13:48,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:13:48,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:13:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:13:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1054431279, now seen corresponding path program 1 times [2021-12-28 04:13:48,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:13:48,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390788253] [2021-12-28 04:13:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:13:48,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:13:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 04:13:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 04:13:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 04:13:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 04:13:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:13:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:13:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 04:13:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:13:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:13:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:13:49,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:13:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390788253] [2021-12-28 04:13:49,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390788253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:13:49,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:13:49,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:13:49,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767044849] [2021-12-28 04:13:49,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:13:49,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:13:49,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:13:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:13:49,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:13:49,009 INFO L87 Difference]: Start difference. First operand 2550 states and 3466 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 04:13:51,893 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 [] [2021-12-28 04:13:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:13:57,136 INFO L93 Difference]: Finished difference Result 6629 states and 9102 transitions. [2021-12-28 04:13:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:13:57,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2021-12-28 04:13:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:13:57,158 INFO L225 Difference]: With dead ends: 6629 [2021-12-28 04:13:57,159 INFO L226 Difference]: Without dead ends: 4082 [2021-12-28 04:13:57,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-28 04:13:57,172 INFO L933 BasicCegarLoop]: 1732 mSDtfsCounter, 1492 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 603 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:13:57,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 4394 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 2081 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-12-28 04:13:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-12-28 04:13:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3560. [2021-12-28 04:13:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2610 states have (on average 1.3114942528735631) internal successors, (3423), 2655 states have internal predecessors, (3423), 702 states have call successors, (702), 248 states have call predecessors, (702), 247 states have return successors, (700), 683 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-28 04:13:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4825 transitions. [2021-12-28 04:13:57,320 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4825 transitions. Word has length 106 [2021-12-28 04:13:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:13:57,320 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 4825 transitions. [2021-12-28 04:13:57,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 04:13:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4825 transitions. [2021-12-28 04:13:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-28 04:13:57,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:13:57,332 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-28 04:13:57,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:13:57,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:13:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:13:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 772852535, now seen corresponding path program 1 times [2021-12-28 04:13:57,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:13:57,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355163424] [2021-12-28 04:13:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:13:57,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:13:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:13:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 04:13:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:13:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 04:13:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 04:13:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:13:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:13:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:13:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:13:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 04:13:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 04:13:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 04:13:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-28 04:13:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 04:13:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:13:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-28 04:13:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:13:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-28 04:13:57,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:13:57,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355163424] [2021-12-28 04:13:57,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355163424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:13:57,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:13:57,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:13:57,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561857394] [2021-12-28 04:13:57,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:13:57,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:13:57,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:13:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:13:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:13:57,863 INFO L87 Difference]: Start difference. First operand 3560 states and 4825 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 04:14:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:14:05,907 INFO L93 Difference]: Finished difference Result 7644 states and 10470 transitions. [2021-12-28 04:14:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 04:14:05,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 185 [2021-12-28 04:14:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:14:05,929 INFO L225 Difference]: With dead ends: 7644 [2021-12-28 04:14:05,929 INFO L226 Difference]: Without dead ends: 4081 [2021-12-28 04:14:05,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-28 04:14:05,946 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 518 mSDsluCounter, 4415 mSDsCounter, 0 mSdLazyCounter, 3087 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 6050 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 3087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:14:05,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 6050 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 3087 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-28 04:14:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-12-28 04:14:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3563. [2021-12-28 04:14:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 2613 states have (on average 1.310371220818982) internal successors, (3424), 2658 states have internal predecessors, (3424), 702 states have call successors, (702), 248 states have call predecessors, (702), 247 states have return successors, (700), 683 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-28 04:14:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4826 transitions. [2021-12-28 04:14:06,075 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4826 transitions. Word has length 185 [2021-12-28 04:14:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:14:06,075 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4826 transitions. [2021-12-28 04:14:06,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 04:14:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4826 transitions. [2021-12-28 04:14:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 04:14:06,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:14:06,082 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:14:06,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:14:06,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:14:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:14:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1258493088, now seen corresponding path program 1 times [2021-12-28 04:14:06,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:14:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619412669] [2021-12-28 04:14:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:14:06,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:14:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 04:14:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 04:14:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:14:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:14:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:14:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:14:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 04:14:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:14:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:14:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:14:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 04:14:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 04:14:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 04:14:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 04:14:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-28 04:14:06,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:14:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619412669] [2021-12-28 04:14:06,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619412669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:14:06,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:14:06,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:14:06,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403155517] [2021-12-28 04:14:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:14:06,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:14:06,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:14:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:14:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:14:06,663 INFO L87 Difference]: Start difference. First operand 3563 states and 4826 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 04:14:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:14:13,334 INFO L93 Difference]: Finished difference Result 10343 states and 14184 transitions. [2021-12-28 04:14:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 04:14:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 194 [2021-12-28 04:14:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:14:13,379 INFO L225 Difference]: With dead ends: 10343 [2021-12-28 04:14:13,379 INFO L226 Difference]: Without dead ends: 6783 [2021-12-28 04:14:13,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-28 04:14:13,398 INFO L933 BasicCegarLoop]: 1790 mSDtfsCounter, 3918 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4158 SdHoareTripleChecker+Valid, 5130 SdHoareTripleChecker+Invalid, 5126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:14:13,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4158 Valid, 5130 Invalid, 5126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1822 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-28 04:14:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6783 states. [2021-12-28 04:14:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6783 to 5852. [2021-12-28 04:14:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 4280 states have (on average 1.3067757009345795) internal successors, (5593), 4360 states have internal predecessors, (5593), 1158 states have call successors, (1158), 414 states have call predecessors, (1158), 413 states have return successors, (1156), 1122 states have call predecessors, (1156), 1156 states have call successors, (1156) [2021-12-28 04:14:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7907 transitions. [2021-12-28 04:14:13,790 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7907 transitions. Word has length 194 [2021-12-28 04:14:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:14:13,792 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 7907 transitions. [2021-12-28 04:14:13,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 04:14:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7907 transitions. [2021-12-28 04:14:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-28 04:14:13,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:14:13,801 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:14:13,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:14:13,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:14:13,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:14:13,802 INFO L85 PathProgramCache]: Analyzing trace with hash -322687177, now seen corresponding path program 1 times [2021-12-28 04:14:13,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:14:13,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212771992] [2021-12-28 04:14:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:14:13,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:14:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 04:14:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 04:14:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:14:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:14:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:14:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:14:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 04:14:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 04:14:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 04:14:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-28 04:14:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 04:14:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-28 04:14:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-28 04:14:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-28 04:14:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 04:14:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-28 04:14:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-28 04:14:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-28 04:14:14,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:14:14,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212771992] [2021-12-28 04:14:14,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212771992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:14:14,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:14:14,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:14:14,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416621232] [2021-12-28 04:14:14,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:14:14,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:14:14,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:14:14,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:14:14,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:14:14,318 INFO L87 Difference]: Start difference. First operand 5852 states and 7907 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 04:14:18,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:14:18,854 INFO L93 Difference]: Finished difference Result 12637 states and 17289 transitions. [2021-12-28 04:14:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:14:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 225 [2021-12-28 04:14:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:14:18,892 INFO L225 Difference]: With dead ends: 12637 [2021-12-28 04:14:18,893 INFO L226 Difference]: Without dead ends: 6788 [2021-12-28 04:14:18,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-12-28 04:14:18,918 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 3690 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 2029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3900 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:14:18,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3900 Valid, 3222 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-28 04:14:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6788 states. [2021-12-28 04:14:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6788 to 5852. [2021-12-28 04:14:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 4280 states have (on average 1.3053738317757009) internal successors, (5587), 4360 states have internal predecessors, (5587), 1158 states have call successors, (1158), 414 states have call predecessors, (1158), 413 states have return successors, (1156), 1122 states have call predecessors, (1156), 1156 states have call successors, (1156) [2021-12-28 04:14:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7901 transitions. [2021-12-28 04:14:19,320 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7901 transitions. Word has length 225 [2021-12-28 04:14:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:14:19,321 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 7901 transitions. [2021-12-28 04:14:19,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 04:14:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7901 transitions. [2021-12-28 04:14:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-28 04:14:19,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:14:19,331 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:14:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:14:19,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:14:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:14:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1898259317, now seen corresponding path program 1 times [2021-12-28 04:14:19,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:14:19,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637818131] [2021-12-28 04:14:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:14:19,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:14:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 04:14:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 04:14:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:14:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:14:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:14:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:14:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:14:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 04:14:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 04:14:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:14:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 04:14:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-28 04:14:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 04:14:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-28 04:14:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-28 04:14:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-28 04:14:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 04:14:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-28 04:14:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-28 04:14:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:14:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-28 04:14:20,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:14:20,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637818131] [2021-12-28 04:14:20,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637818131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:14:20,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:14:20,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 04:14:20,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825029243] [2021-12-28 04:14:20,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:14:20,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 04:14:20,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:14:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 04:14:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-28 04:14:20,132 INFO L87 Difference]: Start difference. First operand 5852 states and 7901 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (25), 8 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 04:14:25,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []