./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.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 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:33:47,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:33:47,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:33:47,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:33:47,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:33:47,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:33:47,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:33:47,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:33:47,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:33:47,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:33:47,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:33:47,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:33:47,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:33:47,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:33:47,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:33:47,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:33:47,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:33:47,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:33:47,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:33:47,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:33:47,891 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:33:47,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:33:47,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:33:47,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:33:47,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:33:47,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:33:47,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:33:47,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:33:47,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:33:47,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:33:47,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:33:47,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:33:47,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:33:47,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:33:47,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:33:47,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:33:47,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:33:47,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:33:47,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:33:47,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:33:47,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:33:47,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:33:47,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:33:47,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:33:47,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:33:47,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:33:47,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:33:47,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:33:47,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:33:47,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:33:47,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:33:47,962 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:33:47,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:33:47,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:33:47,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:33:47,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:33:47,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:33:47,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:33:47,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:33:47,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:33:47,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:33:47,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:33:47,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:33:47,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:33:47,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:33:47,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:33:47,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:33:47,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2022-07-19 23:33:48,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:33:48,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:33:48,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:33:48,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:33:48,150 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:33:48,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2022-07-19 23:33:48,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ec5d5bc/eb6c4ef8d8bb4bc9ac8f659c33186096/FLAG1cbfaf067 [2022-07-19 23:33:48,851 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:33:48,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2022-07-19 23:33:48,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ec5d5bc/eb6c4ef8d8bb4bc9ac8f659c33186096/FLAG1cbfaf067 [2022-07-19 23:33:48,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ec5d5bc/eb6c4ef8d8bb4bc9ac8f659c33186096 [2022-07-19 23:33:48,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:33:48,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:33:48,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:33:48,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:33:48,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:33:48,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:33:48" (1/1) ... [2022-07-19 23:33:48,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd25e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:48, skipping insertion in model container [2022-07-19 23:33:48,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:33:48" (1/1) ... [2022-07-19 23:33:48,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:33:49,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:33:49,567 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2022-07-19 23:33:49,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:33:49,997 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:33:50,076 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2022-07-19 23:33:50,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:33:50,268 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:33:50,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50 WrapperNode [2022-07-19 23:33:50,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:33:50,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:33:50,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:33:50,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:33:50,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,430 INFO L137 Inliner]: procedures = 193, calls = 1202, calls flagged for inlining = 77, calls inlined = 49, statements flattened = 2322 [2022-07-19 23:33:50,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:33:50,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:33:50,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:33:50,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:33:50,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:33:50,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:33:50,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:33:50,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:33:50,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (1/1) ... [2022-07-19 23:33:50,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:33:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:33:50,669 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) [2022-07-19 23:33:50,698 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 [2022-07-19 23:33:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:33:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:33:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:33:50,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:33:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2022-07-19 23:33:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2022-07-19 23:33:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-19 23:33:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-19 23:33:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:33:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:33:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-07-19 23:33:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-07-19 23:33:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-19 23:33:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-19 23:33:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-19 23:33:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-19 23:33:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:33:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:33:50,730 INFO L130 BoogieDeclarations]: Found specification of procedure can_newlink [2022-07-19 23:33:50,731 INFO L138 BoogieDeclarations]: Found implementation of procedure can_newlink [2022-07-19 23:33:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:33:50,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:33:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-19 23:33:50,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-19 23:33:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_25 [2022-07-19 23:33:50,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_25 [2022-07-19 23:33:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:33:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_xstats [2022-07-19 23:33:50,732 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_xstats [2022-07-19 23:33:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_rename_static [2022-07-19 23:33:50,732 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_rename_static [2022-07-19 23:33:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:33:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-19 23:33:50,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-19 23:33:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:33:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:33:50,732 INFO L130 BoogieDeclarations]: Found specification of procedure nla_total_size [2022-07-19 23:33:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_total_size [2022-07-19 23:33:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure nla_data [2022-07-19 23:33:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_data [2022-07-19 23:33:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-19 23:33:50,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-19 23:33:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure can_update_spt [2022-07-19 23:33:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure can_update_spt [2022-07-19 23:33:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:33:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:33:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:33:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure can_restart [2022-07-19 23:33:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure can_restart [2022-07-19 23:33:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:33:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-07-19 23:33:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-07-19 23:33:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:33:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure can_skb_reserve [2022-07-19 23:33:50,736 INFO L138 BoogieDeclarations]: Found implementation of procedure can_skb_reserve [2022-07-19 23:33:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:33:50,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:33:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-19 23:33:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-19 23:33:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-19 23:33:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-19 23:33:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure can_skb_prv [2022-07-19 23:33:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure can_skb_prv [2022-07-19 23:33:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:33:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure can_flush_echo_skb [2022-07-19 23:33:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure can_flush_echo_skb [2022-07-19 23:33:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:33:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:33:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:33:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-07-19 23:33:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-07-19 23:33:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:33:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:33:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put [2022-07-19 23:33:50,740 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put [2022-07-19 23:33:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-19 23:33:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-19 23:33:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure can_get_xstats_size [2022-07-19 23:33:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure can_get_xstats_size [2022-07-19 23:33:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-19 23:33:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-19 23:33:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure can_get_bittiming [2022-07-19 23:33:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure can_get_bittiming [2022-07-19 23:33:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_info [2022-07-19 23:33:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_info [2022-07-19 23:33:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure can_get_size [2022-07-19 23:33:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure can_get_size [2022-07-19 23:33:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-19 23:33:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-19 23:33:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-19 23:33:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-19 23:33:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:33:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure can_changelink [2022-07-19 23:33:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure can_changelink [2022-07-19 23:33:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:33:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:33:51,136 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:33:51,139 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:33:51,381 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:33:52,361 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:33:52,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:33:52,370 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 23:33:52,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:33:52 BoogieIcfgContainer [2022-07-19 23:33:52,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:33:52,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:33:52,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:33:52,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:33:52,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:33:48" (1/3) ... [2022-07-19 23:33:52,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a08d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:33:52, skipping insertion in model container [2022-07-19 23:33:52,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:33:50" (2/3) ... [2022-07-19 23:33:52,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a08d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:33:52, skipping insertion in model container [2022-07-19 23:33:52,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:33:52" (3/3) ... [2022-07-19 23:33:52,379 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2022-07-19 23:33:52,389 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:33:52,389 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:33:52,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:33:52,436 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d6c0d1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@712dd787 [2022-07-19 23:33:52,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:33:52,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 516 states have (on average 1.4127906976744187) internal successors, (729), 530 states have internal predecessors, (729), 129 states have call successors, (129), 40 states have call predecessors, (129), 39 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-19 23:33:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 23:33:52,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:33:52,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:33:52,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:33:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:33:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1454109381, now seen corresponding path program 1 times [2022-07-19 23:33:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:33:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871014815] [2022-07-19 23:33:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:33:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:33:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:52,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:33:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:33:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:33:52,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871014815] [2022-07-19 23:33:52,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871014815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:33:52,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:33:52,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:33:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36511471] [2022-07-19 23:33:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:33:52,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:33:52,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:33:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:33:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:33:52,898 INFO L87 Difference]: Start difference. First operand has 686 states, 516 states have (on average 1.4127906976744187) internal successors, (729), 530 states have internal predecessors, (729), 129 states have call successors, (129), 40 states have call predecessors, (129), 39 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:33:55,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:33:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:33:56,327 INFO L93 Difference]: Finished difference Result 2156 states and 3162 transitions. [2022-07-19 23:33:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:33:56,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-19 23:33:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:33:56,361 INFO L225 Difference]: With dead ends: 2156 [2022-07-19 23:33:56,361 INFO L226 Difference]: Without dead ends: 1453 [2022-07-19 23:33:56,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:33:56,377 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1270 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 367 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:33:56,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2156 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 770 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 23:33:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-07-19 23:33:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1309. [2022-07-19 23:33:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 991 states have (on average 1.3925327951564077) internal successors, (1380), 1005 states have internal predecessors, (1380), 241 states have call successors, (241), 77 states have call predecessors, (241), 76 states have return successors, (240), 234 states have call predecessors, (240), 240 states have call successors, (240) [2022-07-19 23:33:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1861 transitions. [2022-07-19 23:33:56,491 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1861 transitions. Word has length 27 [2022-07-19 23:33:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:33:56,492 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1861 transitions. [2022-07-19 23:33:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:33:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1861 transitions. [2022-07-19 23:33:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 23:33:56,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:33:56,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:33:56,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:33:56,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:33:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:33:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1553363810, now seen corresponding path program 1 times [2022-07-19 23:33:56,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:33:56,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849700059] [2022-07-19 23:33:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:33:56,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:33:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:33:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:33:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:33:56,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849700059] [2022-07-19 23:33:56,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849700059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:33:56,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:33:56,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:33:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274136995] [2022-07-19 23:33:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:33:56,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:33:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:33:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:33:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:33:56,626 INFO L87 Difference]: Start difference. First operand 1309 states and 1861 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:33:59,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:02,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:02,734 INFO L93 Difference]: Finished difference Result 4184 states and 6038 transitions. [2022-07-19 23:34:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:34:02,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-19 23:34:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:02,752 INFO L225 Difference]: With dead ends: 4184 [2022-07-19 23:34:02,752 INFO L226 Difference]: Without dead ends: 2875 [2022-07-19 23:34:02,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:34:02,761 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1241 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 356 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:02,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 3862 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1666 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-07-19 23:34:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-07-19 23:34:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2637. [2022-07-19 23:34:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 1996 states have (on average 1.3922845691382766) internal successors, (2779), 2028 states have internal predecessors, (2779), 480 states have call successors, (480), 153 states have call predecessors, (480), 160 states have return successors, (524), 471 states have call predecessors, (524), 479 states have call successors, (524) [2022-07-19 23:34:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3783 transitions. [2022-07-19 23:34:02,882 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3783 transitions. Word has length 32 [2022-07-19 23:34:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:02,883 INFO L495 AbstractCegarLoop]: Abstraction has 2637 states and 3783 transitions. [2022-07-19 23:34:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:34:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3783 transitions. [2022-07-19 23:34:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 23:34:02,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:02,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:34:02,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1997043622, now seen corresponding path program 1 times [2022-07-19 23:34:02,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:02,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341092240] [2022-07-19 23:34:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:34:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:34:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:34:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 23:34:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 23:34:03,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:03,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341092240] [2022-07-19 23:34:03,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341092240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:03,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:03,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:34:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844680509] [2022-07-19 23:34:03,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:34:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:34:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:34:03,430 INFO L87 Difference]: Start difference. First operand 2637 states and 3783 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 23:34:06,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:08,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:09,917 INFO L93 Difference]: Finished difference Result 5825 states and 8536 transitions. [2022-07-19 23:34:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:34:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-07-19 23:34:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:09,936 INFO L225 Difference]: With dead ends: 5825 [2022-07-19 23:34:09,937 INFO L226 Difference]: Without dead ends: 3195 [2022-07-19 23:34:09,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:34:09,950 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 509 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 334 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:09,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 3157 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2429 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-07-19 23:34:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2022-07-19 23:34:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2651. [2022-07-19 23:34:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2000 states have (on average 1.3875) internal successors, (2775), 2036 states have internal predecessors, (2775), 480 states have call successors, (480), 153 states have call predecessors, (480), 170 states have return successors, (548), 477 states have call predecessors, (548), 479 states have call successors, (548) [2022-07-19 23:34:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3803 transitions. [2022-07-19 23:34:10,044 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3803 transitions. Word has length 134 [2022-07-19 23:34:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:10,045 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3803 transitions. [2022-07-19 23:34:10,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 23:34:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3803 transitions. [2022-07-19 23:34:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 23:34:10,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:10,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:10,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:34:10,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1661333466, now seen corresponding path program 1 times [2022-07-19 23:34:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:10,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123532197] [2022-07-19 23:34:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:34:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 23:34:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:34:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 23:34:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 23:34:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:10,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123532197] [2022-07-19 23:34:10,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123532197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:10,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:10,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:34:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042659575] [2022-07-19 23:34:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:34:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:34:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:34:10,638 INFO L87 Difference]: Start difference. First operand 2651 states and 3803 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 23:34:13,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:15,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:17,488 INFO L93 Difference]: Finished difference Result 6153 states and 9023 transitions. [2022-07-19 23:34:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:34:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 141 [2022-07-19 23:34:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:17,502 INFO L225 Difference]: With dead ends: 6153 [2022-07-19 23:34:17,502 INFO L226 Difference]: Without dead ends: 3509 [2022-07-19 23:34:17,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:34:17,511 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 2021 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 808 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:17,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 3206 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 2071 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-07-19 23:34:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-19 23:34:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2657. [2022-07-19 23:34:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 2006 states have (on average 1.3858424725822533) internal successors, (2780), 2042 states have internal predecessors, (2780), 480 states have call successors, (480), 153 states have call predecessors, (480), 170 states have return successors, (548), 477 states have call predecessors, (548), 479 states have call successors, (548) [2022-07-19 23:34:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3808 transitions. [2022-07-19 23:34:17,615 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3808 transitions. Word has length 141 [2022-07-19 23:34:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:17,617 INFO L495 AbstractCegarLoop]: Abstraction has 2657 states and 3808 transitions. [2022-07-19 23:34:17,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 23:34:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3808 transitions. [2022-07-19 23:34:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 23:34:17,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:17,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:34:17,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2054360476, now seen corresponding path program 1 times [2022-07-19 23:34:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:17,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288524710] [2022-07-19 23:34:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:34:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 23:34:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:34:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 23:34:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 23:34:19,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288524710] [2022-07-19 23:34:19,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288524710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:34:19,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71358478] [2022-07-19 23:34:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:19,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:34:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:34:19,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:34:19,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:34:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-19 23:34:19,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:34:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:34:19,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:34:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71358478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:19,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:34:19,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [21] total 22 [2022-07-19 23:34:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255773545] [2022-07-19 23:34:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 23:34:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 23:34:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-07-19 23:34:19,966 INFO L87 Difference]: Start difference. First operand 2657 states and 3808 transitions. Second operand has 18 states, 16 states have (on average 6.4375) internal successors, (103), 13 states have internal predecessors, (103), 4 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (16), 7 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 23:34:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:20,658 INFO L93 Difference]: Finished difference Result 5693 states and 8245 transitions. [2022-07-19 23:34:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 23:34:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.4375) internal successors, (103), 13 states have internal predecessors, (103), 4 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (16), 7 states have call predecessors, (16), 4 states have call successors, (16) Word has length 141 [2022-07-19 23:34:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:20,675 INFO L225 Difference]: With dead ends: 5693 [2022-07-19 23:34:20,675 INFO L226 Difference]: Without dead ends: 3043 [2022-07-19 23:34:20,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2022-07-19 23:34:20,684 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 109 mSDsluCounter, 16903 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 17979 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:20,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 17979 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:34:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-07-19 23:34:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2679. [2022-07-19 23:34:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2022 states have (on average 1.380811078140455) internal successors, (2792), 2054 states have internal predecessors, (2792), 484 states have call successors, (484), 153 states have call predecessors, (484), 172 states have return successors, (554), 487 states have call predecessors, (554), 483 states have call successors, (554) [2022-07-19 23:34:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 3830 transitions. [2022-07-19 23:34:20,795 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 3830 transitions. Word has length 141 [2022-07-19 23:34:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:20,795 INFO L495 AbstractCegarLoop]: Abstraction has 2679 states and 3830 transitions. [2022-07-19 23:34:20,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.4375) internal successors, (103), 13 states have internal predecessors, (103), 4 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (16), 7 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 23:34:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 3830 transitions. [2022-07-19 23:34:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 23:34:20,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:20,804 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:20,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:34:21,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:34:21,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -545184097, now seen corresponding path program 1 times [2022-07-19 23:34:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:21,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788434465] [2022-07-19 23:34:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:34:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 23:34:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:34:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:34:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:34:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:34:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:34:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 23:34:21,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:21,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788434465] [2022-07-19 23:34:21,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788434465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:21,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:21,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:34:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948110735] [2022-07-19 23:34:21,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:34:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:21,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:34:21,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:34:21,297 INFO L87 Difference]: Start difference. First operand 2679 states and 3830 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:34:23,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:25,445 INFO L93 Difference]: Finished difference Result 4572 states and 6696 transitions. [2022-07-19 23:34:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:34:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-07-19 23:34:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:25,459 INFO L225 Difference]: With dead ends: 4572 [2022-07-19 23:34:25,459 INFO L226 Difference]: Without dead ends: 3213 [2022-07-19 23:34:25,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:34:25,465 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 515 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 330 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:25,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 2079 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1410 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 23:34:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-07-19 23:34:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 2683. [2022-07-19 23:34:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2026 states have (on average 1.3800592300098717) internal successors, (2796), 2058 states have internal predecessors, (2796), 484 states have call successors, (484), 153 states have call predecessors, (484), 172 states have return successors, (554), 487 states have call predecessors, (554), 483 states have call successors, (554) [2022-07-19 23:34:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 3834 transitions. [2022-07-19 23:34:25,570 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 3834 transitions. Word has length 153 [2022-07-19 23:34:25,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:25,571 INFO L495 AbstractCegarLoop]: Abstraction has 2683 states and 3834 transitions. [2022-07-19 23:34:25,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:34:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 3834 transitions. [2022-07-19 23:34:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 23:34:25,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:25,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:25,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:34:25,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1431627006, now seen corresponding path program 1 times [2022-07-19 23:34:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486394621] [2022-07-19 23:34:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:34:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 23:34:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:34:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:34:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:34:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:34:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 23:34:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 23:34:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486394621] [2022-07-19 23:34:25,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486394621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:25,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:25,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 23:34:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812524605] [2022-07-19 23:34:25,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 23:34:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 23:34:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:34:25,952 INFO L87 Difference]: Start difference. First operand 2683 states and 3834 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 8 states have internal predecessors, (103), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 23:34:29,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:31,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:36,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:37,676 INFO L93 Difference]: Finished difference Result 6461 states and 9401 transitions. [2022-07-19 23:34:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 23:34:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 8 states have internal predecessors, (103), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 155 [2022-07-19 23:34:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:37,691 INFO L225 Difference]: With dead ends: 6461 [2022-07-19 23:34:37,691 INFO L226 Difference]: Without dead ends: 3785 [2022-07-19 23:34:37,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-07-19 23:34:37,698 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 2402 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 6267 mSolverCounterSat, 990 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 7259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 6267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:37,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 3620 Invalid, 7259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 6267 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2022-07-19 23:34:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2022-07-19 23:34:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3173. [2022-07-19 23:34:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 2372 states have (on average 1.3524451939291737) internal successors, (3208), 2408 states have internal predecessors, (3208), 580 states have call successors, (580), 181 states have call predecessors, (580), 220 states have return successors, (716), 599 states have call predecessors, (716), 579 states have call successors, (716) [2022-07-19 23:34:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 4504 transitions. [2022-07-19 23:34:37,867 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 4504 transitions. Word has length 155 [2022-07-19 23:34:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:37,867 INFO L495 AbstractCegarLoop]: Abstraction has 3173 states and 4504 transitions. [2022-07-19 23:34:37,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 8 states have internal predecessors, (103), 5 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 23:34:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 4504 transitions. [2022-07-19 23:34:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 23:34:37,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:37,873 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:37,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:34:37,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1917888894, now seen corresponding path program 1 times [2022-07-19 23:34:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:37,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559296600] [2022-07-19 23:34:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:34:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:34:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:34:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:34:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 23:34:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 23:34:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:34:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:34:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:34:38,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:38,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559296600] [2022-07-19 23:34:38,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559296600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:38,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:38,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:34:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028823379] [2022-07-19 23:34:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:38,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:34:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:34:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:34:38,340 INFO L87 Difference]: Start difference. First operand 3173 states and 4504 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:34:41,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:44,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:34:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:45,503 INFO L93 Difference]: Finished difference Result 6891 states and 9971 transitions. [2022-07-19 23:34:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:34:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2022-07-19 23:34:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:45,527 INFO L225 Difference]: With dead ends: 6891 [2022-07-19 23:34:45,527 INFO L226 Difference]: Without dead ends: 3713 [2022-07-19 23:34:45,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:34:45,554 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 412 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 222 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:45,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 2932 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2182 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-07-19 23:34:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-19 23:34:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3179. [2022-07-19 23:34:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2378 states have (on average 1.3515559293523969) internal successors, (3214), 2414 states have internal predecessors, (3214), 580 states have call successors, (580), 181 states have call predecessors, (580), 220 states have return successors, (716), 599 states have call predecessors, (716), 579 states have call successors, (716) [2022-07-19 23:34:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4510 transitions. [2022-07-19 23:34:45,678 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4510 transitions. Word has length 162 [2022-07-19 23:34:45,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:45,679 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 4510 transitions. [2022-07-19 23:34:45,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:34:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4510 transitions. [2022-07-19 23:34:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 23:34:45,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:45,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:45,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:34:45,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash 181373466, now seen corresponding path program 1 times [2022-07-19 23:34:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:45,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947867545] [2022-07-19 23:34:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:45,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:45,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:34:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:34:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:34:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:34:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:34:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:34:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:34:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:34:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:34:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947867545] [2022-07-19 23:34:46,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947867545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:34:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466935326] [2022-07-19 23:34:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:46,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:34:46,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:34:46,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:34:46,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:34:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:46,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-19 23:34:46,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:34:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:34:47,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:34:47,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466935326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:47,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:34:47,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [9] total 28 [2022-07-19 23:34:47,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349025024] [2022-07-19 23:34:47,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:47,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 23:34:47,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:47,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 23:34:47,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-19 23:34:47,192 INFO L87 Difference]: Start difference. First operand 3179 states and 4510 transitions. Second operand has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 16 states have internal predecessors, (119), 6 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 6 states have call successors, (20) [2022-07-19 23:34:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:47,971 INFO L93 Difference]: Finished difference Result 6895 states and 9903 transitions. [2022-07-19 23:34:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 23:34:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 16 states have internal predecessors, (119), 6 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 6 states have call successors, (20) Word has length 163 [2022-07-19 23:34:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:47,985 INFO L225 Difference]: With dead ends: 6895 [2022-07-19 23:34:47,986 INFO L226 Difference]: Without dead ends: 3723 [2022-07-19 23:34:47,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 23:34:47,996 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 437 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 17194 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:47,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 17194 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:34:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2022-07-19 23:34:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3211. [2022-07-19 23:34:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 2402 states have (on average 1.347210657785179) internal successors, (3236), 2438 states have internal predecessors, (3236), 588 states have call successors, (588), 181 states have call predecessors, (588), 220 states have return successors, (724), 607 states have call predecessors, (724), 587 states have call successors, (724) [2022-07-19 23:34:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4548 transitions. [2022-07-19 23:34:48,119 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4548 transitions. Word has length 163 [2022-07-19 23:34:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:48,119 INFO L495 AbstractCegarLoop]: Abstraction has 3211 states and 4548 transitions. [2022-07-19 23:34:48,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 16 states have internal predecessors, (119), 6 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 6 states have call successors, (20) [2022-07-19 23:34:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4548 transitions. [2022-07-19 23:34:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 23:34:48,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:48,125 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:48,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 23:34:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 23:34:48,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1719713496, now seen corresponding path program 1 times [2022-07-19 23:34:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:48,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328144474] [2022-07-19 23:34:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:34:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:34:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:34:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:34:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:34:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:34:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:34:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:34:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:34:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:48,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328144474] [2022-07-19 23:34:48,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328144474] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:34:48,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623142550] [2022-07-19 23:34:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:48,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:34:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:34:48,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:34:48,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 23:34:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:49,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-19 23:34:49,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:34:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 23:34:49,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:34:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 23:34:50,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623142550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:34:50,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:34:50,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 10] total 35 [2022-07-19 23:34:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506439187] [2022-07-19 23:34:50,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:34:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 23:34:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 23:34:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1104, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 23:34:50,703 INFO L87 Difference]: Start difference. First operand 3211 states and 4548 transitions. Second operand has 35 states, 34 states have (on average 4.852941176470588) internal successors, (165), 26 states have internal predecessors, (165), 8 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (39), 12 states have call predecessors, (39), 8 states have call successors, (39) [2022-07-19 23:34:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:58,907 INFO L93 Difference]: Finished difference Result 7445 states and 10813 transitions. [2022-07-19 23:34:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 23:34:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.852941176470588) internal successors, (165), 26 states have internal predecessors, (165), 8 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (39), 12 states have call predecessors, (39), 8 states have call successors, (39) Word has length 163 [2022-07-19 23:34:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:58,919 INFO L225 Difference]: With dead ends: 7445 [2022-07-19 23:34:58,919 INFO L226 Difference]: Without dead ends: 4229 [2022-07-19 23:34:58,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=289, Invalid=3133, Unknown=0, NotChecked=0, Total=3422 [2022-07-19 23:34:58,927 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 1218 mSDsluCounter, 14375 mSDsCounter, 0 mSdLazyCounter, 14079 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 15273 SdHoareTripleChecker+Invalid, 14769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 14079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:58,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 15273 Invalid, 14769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 14079 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-19 23:34:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2022-07-19 23:34:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 3233. [2022-07-19 23:34:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 2424 states have (on average 1.3432343234323432) internal successors, (3256), 2460 states have internal predecessors, (3256), 588 states have call successors, (588), 181 states have call predecessors, (588), 220 states have return successors, (724), 607 states have call predecessors, (724), 587 states have call successors, (724) [2022-07-19 23:34:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4568 transitions. [2022-07-19 23:34:59,066 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4568 transitions. Word has length 163 [2022-07-19 23:34:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:59,066 INFO L495 AbstractCegarLoop]: Abstraction has 3233 states and 4568 transitions. [2022-07-19 23:34:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.852941176470588) internal successors, (165), 26 states have internal predecessors, (165), 8 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (39), 12 states have call predecessors, (39), 8 states have call successors, (39) [2022-07-19 23:34:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4568 transitions. [2022-07-19 23:34:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 23:34:59,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:59,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:59,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:34:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:34:59,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1170888062, now seen corresponding path program 1 times [2022-07-19 23:34:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549581812] [2022-07-19 23:34:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:34:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:34:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:34:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:34:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:34:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:34:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:34:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:34:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:34:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 23:34:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:34:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:34:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 23:34:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:34:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 23:34:59,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:59,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549581812] [2022-07-19 23:34:59,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549581812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:59,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:59,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:34:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257469336] [2022-07-19 23:34:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:59,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:34:59,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:59,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:34:59,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:34:59,757 INFO L87 Difference]: Start difference. First operand 3233 states and 4568 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-19 23:35:02,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:35:08,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:35:10,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:35:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:35:14,222 INFO L93 Difference]: Finished difference Result 8304 states and 12392 transitions. [2022-07-19 23:35:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 23:35:14,223 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) Word has length 178 [2022-07-19 23:35:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:35:14,262 INFO L225 Difference]: With dead ends: 8304 [2022-07-19 23:35:14,262 INFO L226 Difference]: Without dead ends: 6403 [2022-07-19 23:35:14,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 23:35:14,270 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4648 mSDsluCounter, 5005 mSDsCounter, 0 mSdLazyCounter, 8919 mSolverCounterSat, 2668 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4930 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 11589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2668 IncrementalHoareTripleChecker+Valid, 8919 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:35:14,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4930 Valid, 6516 Invalid, 11589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2668 Valid, 8919 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2022-07-19 23:35:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2022-07-19 23:35:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 4095. [2022-07-19 23:35:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 3040 states have (on average 1.3072368421052631) internal successors, (3974), 3106 states have internal predecessors, (3974), 718 states have call successors, (718), 257 states have call predecessors, (718), 336 states have return successors, (952), 747 states have call predecessors, (952), 717 states have call successors, (952) [2022-07-19 23:35:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 5644 transitions. [2022-07-19 23:35:14,507 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 5644 transitions. Word has length 178 [2022-07-19 23:35:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:35:14,508 INFO L495 AbstractCegarLoop]: Abstraction has 4095 states and 5644 transitions. [2022-07-19 23:35:14,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-19 23:35:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 5644 transitions. [2022-07-19 23:35:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-19 23:35:14,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:35:14,521 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:35:14,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 23:35:14,521 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:35:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:35:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1720072675, now seen corresponding path program 1 times [2022-07-19 23:35:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:35:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375516320] [2022-07-19 23:35:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:35:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:35:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:35:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:35:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:35:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:35:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:35:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:35:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:35:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:35:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:35:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:35:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 23:35:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:35:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:35:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 23:35:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 23:35:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 23:35:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:35:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375516320] [2022-07-19 23:35:14,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375516320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:35:14,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:35:14,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:35:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581881760] [2022-07-19 23:35:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:35:14,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:35:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:35:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:35:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:35:14,822 INFO L87 Difference]: Start difference. First operand 4095 states and 5644 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 23:35:17,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:35:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:35:19,219 INFO L93 Difference]: Finished difference Result 7416 states and 10404 transitions. [2022-07-19 23:35:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:35:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 180 [2022-07-19 23:35:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:35:19,233 INFO L225 Difference]: With dead ends: 7416 [2022-07-19 23:35:19,233 INFO L226 Difference]: Without dead ends: 4651 [2022-07-19 23:35:19,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:35:19,239 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 428 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 232 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:35:19,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 2957 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2177 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 23:35:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2022-07-19 23:35:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4095. [2022-07-19 23:35:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 3040 states have (on average 1.3046052631578948) internal successors, (3966), 3106 states have internal predecessors, (3966), 718 states have call successors, (718), 257 states have call predecessors, (718), 336 states have return successors, (948), 747 states have call predecessors, (948), 717 states have call successors, (948) [2022-07-19 23:35:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 5632 transitions. [2022-07-19 23:35:19,502 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 5632 transitions. Word has length 180 [2022-07-19 23:35:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:35:19,502 INFO L495 AbstractCegarLoop]: Abstraction has 4095 states and 5632 transitions. [2022-07-19 23:35:19,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 23:35:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 5632 transitions. [2022-07-19 23:35:19,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 23:35:19,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:35:19,510 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:35:19,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:35:19,510 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:35:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:35:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1585140842, now seen corresponding path program 1 times [2022-07-19 23:35:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:35:19,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588047077] [2022-07-19 23:35:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:35:19,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:35:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:35:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:35:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:35:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:35:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:35:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:35:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:35:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:35:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:35:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:35:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 23:35:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:35:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 23:35:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:35:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:35:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:35:20,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:35:20,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588047077] [2022-07-19 23:35:20,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588047077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:35:20,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304629735] [2022-07-19 23:35:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:35:20,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:35:20,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:35:20,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:35:20,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 23:35:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:21,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 23:35:21,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:35:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 23:35:21,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:35:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:35:21,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304629735] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:35:21,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:35:21,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2022-07-19 23:35:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211363912] [2022-07-19 23:35:21,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:35:21,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 23:35:21,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:35:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 23:35:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:35:21,556 INFO L87 Difference]: Start difference. First operand 4095 states and 5632 transitions. Second operand has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 13 states have internal predecessors, (160), 2 states have call successors, (40), 6 states have call predecessors, (40), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:35:24,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:35:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:35:25,989 INFO L93 Difference]: Finished difference Result 8835 states and 12369 transitions. [2022-07-19 23:35:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 23:35:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 13 states have internal predecessors, (160), 2 states have call successors, (40), 6 states have call predecessors, (40), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 182 [2022-07-19 23:35:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:35:26,005 INFO L225 Difference]: With dead ends: 8835 [2022-07-19 23:35:26,005 INFO L226 Difference]: Without dead ends: 4699 [2022-07-19 23:35:26,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-07-19 23:35:26,016 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 825 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:35:26,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 3268 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 23:35:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2022-07-19 23:35:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4143. [2022-07-19 23:35:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 3088 states have (on average 1.2998704663212435) internal successors, (4014), 3154 states have internal predecessors, (4014), 718 states have call successors, (718), 257 states have call predecessors, (718), 336 states have return successors, (948), 747 states have call predecessors, (948), 717 states have call successors, (948) [2022-07-19 23:35:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5680 transitions. [2022-07-19 23:35:26,249 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5680 transitions. Word has length 182 [2022-07-19 23:35:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:35:26,249 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5680 transitions. [2022-07-19 23:35:26,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 13 states have internal predecessors, (160), 2 states have call successors, (40), 6 states have call predecessors, (40), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:35:26,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5680 transitions. [2022-07-19 23:35:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-19 23:35:26,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:35:26,261 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:35:26,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:35:26,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:35:26,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:35:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:35:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 471626390, now seen corresponding path program 2 times [2022-07-19 23:35:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:35:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415398116] [2022-07-19 23:35:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:35:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:35:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:35:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:35:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:35:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:35:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:35:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:35:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:35:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:35:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:35:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:26,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:35:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 23:35:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 23:35:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 23:35:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:35:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 23:35:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:35:27,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:35:27,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415398116] [2022-07-19 23:35:27,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415398116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:35:27,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876475733] [2022-07-19 23:35:27,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:35:27,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:35:27,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:35:27,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:35:27,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 23:35:28,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:35:28,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:35:28,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 23:35:28,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:35:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 23:35:28,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:35:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:35:28,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876475733] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:35:28,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:35:28,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 29 [2022-07-19 23:35:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736465412] [2022-07-19 23:35:28,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:35:28,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 23:35:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:35:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 23:35:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2022-07-19 23:35:28,965 INFO L87 Difference]: Start difference. First operand 4143 states and 5680 transitions. Second operand has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 25 states have internal predecessors, (172), 2 states have call successors, (40), 6 states have call predecessors, (40), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:35:32,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-19 23:35:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:35:40,140 INFO L93 Difference]: Finished difference Result 8979 states and 12561 transitions. [2022-07-19 23:35:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 23:35:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 25 states have internal predecessors, (172), 2 states have call successors, (40), 6 states have call predecessors, (40), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 186 [2022-07-19 23:35:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:35:40,157 INFO L225 Difference]: With dead ends: 8979 [2022-07-19 23:35:40,157 INFO L226 Difference]: Without dead ends: 4795 [2022-07-19 23:35:40,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=408, Invalid=1074, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 23:35:40,167 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 861 mSDsluCounter, 4448 mSDsCounter, 0 mSdLazyCounter, 4468 mSolverCounterSat, 591 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 5060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 4468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:35:40,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 5314 Invalid, 5060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 4468 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-07-19 23:35:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2022-07-19 23:35:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 4239. [2022-07-19 23:35:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 3184 states have (on average 1.2908291457286432) internal successors, (4110), 3250 states have internal predecessors, (4110), 718 states have call successors, (718), 257 states have call predecessors, (718), 336 states have return successors, (948), 747 states have call predecessors, (948), 717 states have call successors, (948) [2022-07-19 23:35:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 5776 transitions. [2022-07-19 23:35:40,375 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 5776 transitions. Word has length 186 [2022-07-19 23:35:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:35:40,375 INFO L495 AbstractCegarLoop]: Abstraction has 4239 states and 5776 transitions. [2022-07-19 23:35:40,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 25 states have internal predecessors, (172), 2 states have call successors, (40), 6 states have call predecessors, (40), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:35:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 5776 transitions. [2022-07-19 23:35:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-19 23:35:40,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:35:40,381 INFO L195 NwaCegarLoop]: trace histogram [14, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:35:40,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:35:40,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 23:35:40,606 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:35:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:35:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1923514218, now seen corresponding path program 3 times [2022-07-19 23:35:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:35:40,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132771034] [2022-07-19 23:35:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:35:40,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:35:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:35:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:35:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:35:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 23:35:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:35:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:35:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:35:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:35:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:35:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:35:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:35:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 23:35:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:35:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:35:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:35:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 23:35:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 23:35:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:35:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 4 proven. 105 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:35:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:35:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132771034] [2022-07-19 23:35:41,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132771034] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:35:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308896891] [2022-07-19 23:35:41,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:35:41,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:35:41,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:35:41,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:35:41,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process