./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:01:21,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:01:21,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:01:21,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:01:21,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:01:21,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:01:21,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:01:21,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:01:21,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:01:21,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:01:21,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:01:21,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:01:21,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:01:21,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:01:21,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:01:21,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:01:21,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:01:21,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:01:21,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:01:21,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:01:21,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:01:21,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:01:21,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:01:21,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:01:21,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:01:21,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:01:21,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:01:21,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:01:21,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:01:21,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:01:21,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:01:21,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:01:21,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:01:21,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:01:21,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:01:21,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:01:21,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:01:21,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:01:21,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:01:21,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:01:21,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:01:21,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:01:21,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:01:21,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:01:21,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:01:21,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:01:21,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:01:21,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:01:21,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:01:21,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:01:21,975 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:01:21,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:01:21,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:01:21,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:01:21,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:01:21,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:01:21,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:01:21,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:01:21,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:01:21,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:01:21,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:01:21,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:01:21,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:01:21,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:01:21,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:01:21,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:01:21,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:01:21,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:01:21,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:01:21,987 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:01:21,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:01:21,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:01:21,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:01:21,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2021-12-14 18:01:22,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:01:22,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:01:22,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:01:22,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:01:22,219 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:01:22,220 INFO L432 ainManager$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 [2021-12-14 18:01:22,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa255d2a/8fe1af0255504402bdb110f0d235ef38/FLAGb70f06f23 [2021-12-14 18:01:23,086 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:01:23,087 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 [2021-12-14 18:01:23,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa255d2a/8fe1af0255504402bdb110f0d235ef38/FLAGb70f06f23 [2021-12-14 18:01:23,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa255d2a/8fe1af0255504402bdb110f0d235ef38 [2021-12-14 18:01:23,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:01:23,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:01:23,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:01:23,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:01:23,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:01:23,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:01:23" (1/1) ... [2021-12-14 18:01:23,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a3a768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:23, skipping insertion in model container [2021-12-14 18:01:23,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:01:23" (1/1) ... [2021-12-14 18:01:23,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:01:23,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:01:26,494 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] [2021-12-14 18:01:26,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:01:26,619 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:01:27,340 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] [2021-12-14 18:01:27,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:01:27,513 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:01:27,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27 WrapperNode [2021-12-14 18:01:27,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:01:27,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:01:27,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:01:27,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:01:27,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:27,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:27,826 INFO L137 Inliner]: procedures = 426, calls = 3455, calls flagged for inlining = 207, calls inlined = 116, statements flattened = 4483 [2021-12-14 18:01:27,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:01:27,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:01:27,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:01:27,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:01:27,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:27,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:27,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:27,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:27,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:28,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:28,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:28,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:01:28,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:01:28,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:01:28,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:01:28,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (1/1) ... [2021-12-14 18:01:28,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:01:28,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:01:28,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:01:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:01:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-14 18:01:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2021-12-14 18:01:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2021-12-14 18:01:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2021-12-14 18:01:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2021-12-14 18:01:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-14 18:01:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-14 18:01:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:01:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:01:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2021-12-14 18:01:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2021-12-14 18:01:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-14 18:01:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-14 18:01:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2021-12-14 18:01:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2021-12-14 18:01:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:01:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:01:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2021-12-14 18:01:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2021-12-14 18:01:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2021-12-14 18:01:28,166 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2021-12-14 18:01:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 18:01:28,166 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 18:01:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2021-12-14 18:01:28,166 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2021-12-14 18:01:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:01:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:01:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2021-12-14 18:01:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2021-12-14 18:01:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-14 18:01:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-14 18:01:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-14 18:01:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-14 18:01:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 18:01:28,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 18:01:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2021-12-14 18:01:28,168 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2021-12-14 18:01:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:01:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:01:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2021-12-14 18:01:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2021-12-14 18:01:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:01:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-12-14 18:01:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-12-14 18:01:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 18:01:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 18:01:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 18:01:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 18:01:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:01:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-14 18:01:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-14 18:01:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 18:01:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 18:01:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 18:01:28,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 18:01:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:01:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2021-12-14 18:01:28,173 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2021-12-14 18:01:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:01:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:01:28,174 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:01:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2021-12-14 18:01:28,174 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2021-12-14 18:01:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-12-14 18:01:28,174 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-12-14 18:01:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2021-12-14 18:01:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2021-12-14 18:01:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2021-12-14 18:01:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2021-12-14 18:01:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-14 18:01:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-14 18:01:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:01:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:01:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2021-12-14 18:01:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2021-12-14 18:01:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:01:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2021-12-14 18:01:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2021-12-14 18:01:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:01:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:01:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2021-12-14 18:01:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2021-12-14 18:01:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-14 18:01:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-14 18:01:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-14 18:01:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-14 18:01:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2021-12-14 18:01:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2021-12-14 18:01:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 18:01:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 18:01:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 18:01:28,179 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 18:01:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:01:28,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:01:28,180 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 18:01:28,180 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 18:01:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:01:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:01:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2021-12-14 18:01:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2021-12-14 18:01:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:01:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:01:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-12-14 18:01:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-12-14 18:01:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2021-12-14 18:01:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2021-12-14 18:01:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-14 18:01:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-14 18:01:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2021-12-14 18:01:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2021-12-14 18:01:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2021-12-14 18:01:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2021-12-14 18:01:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-14 18:01:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-14 18:01:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-12-14 18:01:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-12-14 18:01:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-14 18:01:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-14 18:01:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2021-12-14 18:01:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2021-12-14 18:01:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-12-14 18:01:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-12-14 18:01:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:01:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:01:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:01:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:01:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:01:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:01:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-12-14 18:01:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-12-14 18:01:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-14 18:01:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-14 18:01:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2021-12-14 18:01:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2021-12-14 18:01:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2021-12-14 18:01:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2021-12-14 18:01:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 18:01:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 18:01:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:01:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-14 18:01:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-14 18:01:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2021-12-14 18:01:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2021-12-14 18:01:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:01:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2021-12-14 18:01:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2021-12-14 18:01:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-12-14 18:01:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-12-14 18:01:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2021-12-14 18:01:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2021-12-14 18:01:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-14 18:01:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-14 18:01:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:01:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 18:01:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 18:01:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 18:01:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 18:01:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 18:01:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 18:01:28,199 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-12-14 18:01:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-12-14 18:01:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 18:01:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 18:01:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2021-12-14 18:01:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2021-12-14 18:01:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 18:01:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 18:01:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:01:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:01:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:01:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:01:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:01:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-12-14 18:01:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-12-14 18:01:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2021-12-14 18:01:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2021-12-14 18:01:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:01:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:01:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 18:01:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 18:01:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-14 18:01:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-14 18:01:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 18:01:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 18:01:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 18:01:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 18:01:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-14 18:01:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-14 18:01:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:01:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2021-12-14 18:01:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2021-12-14 18:01:28,832 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:01:28,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:01:29,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:01:34,389 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:01:34,411 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:01:34,411 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 18:01:34,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:01:34 BoogieIcfgContainer [2021-12-14 18:01:34,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:01:34,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:01:34,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:01:34,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:01:34,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:01:23" (1/3) ... [2021-12-14 18:01:34,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d5e704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:01:34, skipping insertion in model container [2021-12-14 18:01:34,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:01:27" (2/3) ... [2021-12-14 18:01:34,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d5e704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:01:34, skipping insertion in model container [2021-12-14 18:01:34,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:01:34" (3/3) ... [2021-12-14 18:01:34,426 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 [2021-12-14 18:01:34,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:01:34,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:01:34,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:01:34,508 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:01:34,515 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:01:34,575 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) [2021-12-14 18:01:34,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 18:01:34,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:01:34,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:01:34,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:01:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:01:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1510187125, now seen corresponding path program 1 times [2021-12-14 18:01:34,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:01:34,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523628100] [2021-12-14 18:01:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:01:34,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:01:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:01:35,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:01:35,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523628100] [2021-12-14 18:01:35,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523628100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:01:35,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:01:35,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 18:01:35,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965110827] [2021-12-14 18:01:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:01:35,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:01:35,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:01:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:01:35,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:01:35,206 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) [2021-12-14 18:01:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:01:35,529 INFO L93 Difference]: Finished difference Result 3905 states and 5464 transitions. [2021-12-14 18:01:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:01:35,531 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 [2021-12-14 18:01:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:01:35,568 INFO L225 Difference]: With dead ends: 3905 [2021-12-14 18:01:35,568 INFO L226 Difference]: Without dead ends: 2553 [2021-12-14 18:01:35,590 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 [2021-12-14 18:01:35,598 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 [2021-12-14 18:01:35,599 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] [2021-12-14 18:01:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-12-14 18:01:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2550. [2021-12-14 18:01:35,799 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) [2021-12-14 18:01:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3466 transitions. [2021-12-14 18:01:35,893 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3466 transitions. Word has length 19 [2021-12-14 18:01:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:01:35,894 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3466 transitions. [2021-12-14 18:01:35,895 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) [2021-12-14 18:01:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3466 transitions. [2021-12-14 18:01:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-14 18:01:35,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:01:35,914 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] [2021-12-14 18:01:35,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:01:35,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:01:35,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:01:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1054431279, now seen corresponding path program 1 times [2021-12-14 18:01:35,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:01:35,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316922813] [2021-12-14 18:01:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:01:35,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:01:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 18:01:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 18:01:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 18:01:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 18:01:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:01:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:01:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 18:01:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 18:01:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:01:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-14 18:01:36,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:01:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316922813] [2021-12-14 18:01:36,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316922813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:01:36,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:01:36,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:01:36,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256748358] [2021-12-14 18:01:36,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:01:36,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:01:36,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:01:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:01:36,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:01:36,453 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) [2021-12-14 18:01:39,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:01:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:01:44,029 INFO L93 Difference]: Finished difference Result 6629 states and 9102 transitions. [2021-12-14 18:01:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:01:44,030 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 [2021-12-14 18:01:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:01:44,057 INFO L225 Difference]: With dead ends: 6629 [2021-12-14 18:01:44,058 INFO L226 Difference]: Without dead ends: 4082 [2021-12-14 18:01:44,074 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 [2021-12-14 18:01:44,075 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1492 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:01:44,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 4616 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-12-14 18:01:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-12-14 18:01:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3560. [2021-12-14 18:01:44,329 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) [2021-12-14 18:01:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4825 transitions. [2021-12-14 18:01:44,353 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4825 transitions. Word has length 106 [2021-12-14 18:01:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:01:44,353 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 4825 transitions. [2021-12-14 18:01:44,354 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) [2021-12-14 18:01:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4825 transitions. [2021-12-14 18:01:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-14 18:01:44,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:01:44,368 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] [2021-12-14 18:01:44,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:01:44,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:01:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:01:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash 772852535, now seen corresponding path program 1 times [2021-12-14 18:01:44,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:01:44,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623039564] [2021-12-14 18:01:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:01:44,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:01:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 18:01:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 18:01:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 18:01:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 18:01:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:01:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 18:01:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:01:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:01:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:01:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 18:01:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 18:01:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 18:01:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 18:01:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-14 18:01:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-14 18:01:44,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:01:44,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623039564] [2021-12-14 18:01:44,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623039564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:01:44,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:01:44,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:01:44,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027321073] [2021-12-14 18:01:44,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:01:44,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:01:44,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:01:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:01:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:01:44,959 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) [2021-12-14 18:01:47,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:01:48,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:01:49,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:01:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:01:54,919 INFO L93 Difference]: Finished difference Result 7644 states and 10470 transitions. [2021-12-14 18:01:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 18:01:54,920 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 [2021-12-14 18:01:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:01:54,947 INFO L225 Difference]: With dead ends: 7644 [2021-12-14 18:01:54,947 INFO L226 Difference]: Without dead ends: 4081 [2021-12-14 18:01:54,962 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 [2021-12-14 18:01:54,968 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 518 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:01:54,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 6518 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2619 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2021-12-14 18:01:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-12-14 18:01:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3563. [2021-12-14 18:01:55,099 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) [2021-12-14 18:01:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4826 transitions. [2021-12-14 18:01:55,115 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4826 transitions. Word has length 185 [2021-12-14 18:01:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:01:55,117 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4826 transitions. [2021-12-14 18:01:55,117 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) [2021-12-14 18:01:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4826 transitions. [2021-12-14 18:01:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-14 18:01:55,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:01:55,124 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] [2021-12-14 18:01:55,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:01:55,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:01:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:01:55,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1258493088, now seen corresponding path program 1 times [2021-12-14 18:01:55,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:01:55,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859208848] [2021-12-14 18:01:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:01:55,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:01:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 18:01:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 18:01:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:01:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:01:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:01:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:01:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:01:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 18:01:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:01:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 18:01:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:01:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 18:01:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 18:01:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 18:01:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 18:01:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 18:01:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:01:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-14 18:01:55,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:01:55,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859208848] [2021-12-14 18:01:55,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859208848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:01:55,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:01:55,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:01:55,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102314486] [2021-12-14 18:01:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:01:55,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:01:55,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:01:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:01:55,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:01:55,696 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) [2021-12-14 18:01:58,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:02:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:02:03,775 INFO L93 Difference]: Finished difference Result 10343 states and 14184 transitions. [2021-12-14 18:02:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:02:03,776 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 [2021-12-14 18:02:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:02:03,819 INFO L225 Difference]: With dead ends: 10343 [2021-12-14 18:02:03,819 INFO L226 Difference]: Without dead ends: 6783 [2021-12-14 18:02:03,841 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 [2021-12-14 18:02:03,842 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 3918 mSDsluCounter, 3811 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 1824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 4638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1824 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:02:03,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4162 Valid, 5596 Invalid, 4638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1824 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-14 18:02:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6783 states. [2021-12-14 18:02:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6783 to 5852. [2021-12-14 18:02:04,127 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) [2021-12-14 18:02:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7907 transitions. [2021-12-14 18:02:04,153 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7907 transitions. Word has length 194 [2021-12-14 18:02:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:02:04,154 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 7907 transitions. [2021-12-14 18:02:04,155 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) [2021-12-14 18:02:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7907 transitions. [2021-12-14 18:02:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-14 18:02:04,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:02:04,164 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] [2021-12-14 18:02:04,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:02:04,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:02:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:02:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash -322687177, now seen corresponding path program 1 times [2021-12-14 18:02:04,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:02:04,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137554577] [2021-12-14 18:02:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:02:04,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:02:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 18:02:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 18:02:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:02:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:02:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:02:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:02:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 18:02:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:02:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 18:02:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 18:02:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:02:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-14 18:02:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-14 18:02:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-14 18:02:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:02:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-14 18:02:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-14 18:02:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-14 18:02:04,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:02:04,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137554577] [2021-12-14 18:02:04,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137554577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:02:04,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:02:04,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:02:04,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305284921] [2021-12-14 18:02:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:02:04,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:02:04,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:02:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:02:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:02:04,725 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) [2021-12-14 18:02:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:02:09,765 INFO L93 Difference]: Finished difference Result 12637 states and 17289 transitions. [2021-12-14 18:02:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:02:09,765 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 [2021-12-14 18:02:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:02:09,807 INFO L225 Difference]: With dead ends: 12637 [2021-12-14 18:02:09,808 INFO L226 Difference]: Without dead ends: 6788 [2021-12-14 18:02:09,832 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 [2021-12-14 18:02:09,833 INFO L933 BasicCegarLoop]: 1622 mSDtfsCounter, 3690 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 2029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3898 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:02:09,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3898 Valid, 3248 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-14 18:02:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6788 states. [2021-12-14 18:02:10,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6788 to 5852. [2021-12-14 18:02:10,116 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) [2021-12-14 18:02:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7901 transitions. [2021-12-14 18:02:10,141 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7901 transitions. Word has length 225 [2021-12-14 18:02:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:02:10,141 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 7901 transitions. [2021-12-14 18:02:10,142 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) [2021-12-14 18:02:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7901 transitions. [2021-12-14 18:02:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-14 18:02:10,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:02:10,162 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] [2021-12-14 18:02:10,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:02:10,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:02:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:02:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1898259317, now seen corresponding path program 1 times [2021-12-14 18:02:10,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:02:10,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111864661] [2021-12-14 18:02:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:02:10,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:02:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 18:02:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 18:02:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:02:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:02:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:02:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:02:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:02:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 18:02:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:02:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:02:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-14 18:02:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-14 18:02:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:02:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-14 18:02:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-14 18:02:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-14 18:02:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-14 18:02:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-14 18:02:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-14 18:02:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:02:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-14 18:02:10,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:02:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111864661] [2021-12-14 18:02:11,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111864661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:02:11,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:02:11,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-14 18:02:11,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105350492] [2021-12-14 18:02:11,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:02:11,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 18:02:11,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:02:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 18:02:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-14 18:02:11,002 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) [2021-12-14 18:02:15,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []