./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--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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--wireless--mwifiex--mwifiex_pcie.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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:40:25,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:40:25,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:40:25,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:40:25,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:40:25,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:40:25,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:40:25,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:40:25,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:40:25,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:40:25,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:40:25,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:40:25,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:40:25,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:40:25,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:40:25,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:40:25,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:40:25,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:40:25,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:40:25,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:40:25,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:40:25,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:40:25,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:40:25,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:40:25,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:40:25,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:40:25,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:40:25,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:40:25,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:40:25,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:40:25,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:40:25,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:40:25,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:40:25,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:40:25,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:40:25,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:40:25,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:40:25,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:40:25,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:40:25,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:40:25,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:40:26,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:40:26,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:40:26,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:40:26,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:40:26,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:40:26,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:40:26,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:40:26,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:40:26,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:40:26,031 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:40:26,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:40:26,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:40:26,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:40:26,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:40:26,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:40:26,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:40:26,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:40:26,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:40:26,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:40:26,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:40:26,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:40:26,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:40:26,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:40:26,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:40:26,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:40:26,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:40:26,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:40:26,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:40:26,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:40:26,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:40:26,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:40:26,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:40:26,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-12-22 14:40:26,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:40:26,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:40:26,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:40:26,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:40:26,278 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:40:26,279 INFO L432 ainManager$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--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-12-22 14:40:26,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981e6a5a8/66837d8e4a424a51b31a9222e56c7cc8/FLAG271bebfbc [2021-12-22 14:40:26,974 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:40:26,975 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--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-12-22 14:40:27,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981e6a5a8/66837d8e4a424a51b31a9222e56c7cc8/FLAG271bebfbc [2021-12-22 14:40:27,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981e6a5a8/66837d8e4a424a51b31a9222e56c7cc8 [2021-12-22 14:40:27,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:40:27,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:40:27,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:40:27,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:40:27,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:40:27,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:40:27" (1/1) ... [2021-12-22 14:40:27,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ef1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:27, skipping insertion in model container [2021-12-22 14:40:27,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:40:27" (1/1) ... [2021-12-22 14:40:27,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:40:27,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:40:28,016 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--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-12-22 14:40:28,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:40:28,858 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:40:28,978 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--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-12-22 14:40:29,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:40:29,245 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:40:29,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29 WrapperNode [2021-12-22 14:40:29,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:40:29,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:40:29,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:40:29,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:40:29,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,495 INFO L137 Inliner]: procedures = 247, calls = 2608, calls flagged for inlining = 135, calls inlined = 132, statements flattened = 6382 [2021-12-22 14:40:29,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:40:29,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:40:29,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:40:29,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:40:29,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:40:29,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:40:29,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:40:29,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:40:29,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:40:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:40:29,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:40:29,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:40:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-12-22 14:40:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-12-22 14:40:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pm_wakeup_card [2021-12-22 14:40:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pm_wakeup_card [2021-12-22 14:40:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:40:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:40:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:40:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:40:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-22 14:40:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-22 14:40:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-12-22 14:40:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-12-22 14:40:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:40:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:40:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-12-22 14:40:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-12-22 14:40:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-12-22 14:40:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-12-22 14:40:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-22 14:40:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-22 14:40:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-22 14:40:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-22 14:40:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-12-22 14:40:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-12-22 14:40:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_map_pci_memory [2021-12-22 14:40:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_map_pci_memory [2021-12-22 14:40:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-12-22 14:40:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-12-22 14:40:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:40:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:40:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-22 14:40:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-22 14:40:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:40:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:40:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:40:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:40:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-22 14:40:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-22 14:40:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:40:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:40:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_process_event_ready [2021-12-22 14:40:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_process_event_ready [2021-12-22 14:40:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:40:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:40:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-22 14:40:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-22 14:40:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-22 14:40:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:40:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:40:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unmap_pci_memory [2021-12-22 14:40:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unmap_pci_memory [2021-12-22 14:40:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:40:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:40:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_clean_pcie_ring_buf [2021-12-22 14:40:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_clean_pcie_ring_buf [2021-12-22 14:40:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_dev_wakeup_delay [2021-12-22 14:40:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_dev_wakeup_delay [2021-12-22 14:40:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_ok_to_access_hw [2021-12-22 14:40:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_ok_to_access_hw [2021-12-22 14:40:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:40:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:40:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_DMA_ADDR [2021-12-22 14:40:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_DMA_ADDR [2021-12-22 14:40:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:40:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:40:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:40:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-22 14:40:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-22 14:40:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_resume [2021-12-22 14:40:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_resume [2021-12-22 14:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_txbd_ring [2021-12-22 14:40:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_txbd_ring [2021-12-22 14:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_suspend [2021-12-22 14:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_suspend [2021-12-22 14:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-22 14:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-22 14:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_enable_host_int [2021-12-22 14:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_enable_host_int [2021-12-22 14:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_disable_host_int [2021-12-22 14:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_disable_host_int [2021-12-22 14:40:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_not_full [2021-12-22 14:40:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_not_full [2021-12-22 14:40:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-22 14:40:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-22 14:40:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_evtbd_ring [2021-12-22 14:40:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_evtbd_ring [2021-12-22 14:40:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:40:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:40:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-22 14:40:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-22 14:40:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-22 14:40:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-22 14:40:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:40:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-22 14:40:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-22 14:40:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-22 14:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-22 14:40:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-12-22 14:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-12-22 14:40:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:40:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:40:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-22 14:40:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-22 14:40:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_remove [2021-12-22 14:40:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_remove [2021-12-22 14:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_region [2021-12-22 14:40:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_region [2021-12-22 14:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_rxbd_ring [2021-12-22 14:40:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_rxbd_ring [2021-12-22 14:40:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-22 14:40:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-22 14:40:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-22 14:40:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-22 14:40:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_PACB [2021-12-22 14:40:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_PACB [2021-12-22 14:40:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 14:40:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 14:40:29,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:40:29,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-12-22 14:40:29,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:40:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:40:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_complete [2021-12-22 14:40:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_complete [2021-12-22 14:40:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_empty [2021-12-22 14:40:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_empty [2021-12-22 14:40:30,475 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:40:30,477 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:40:31,081 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:40:36,003 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:40:36,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:40:36,015 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 14:40:36,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:40:36 BoogieIcfgContainer [2021-12-22 14:40:36,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:40:36,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:40:36,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:40:36,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:40:36,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:40:27" (1/3) ... [2021-12-22 14:40:36,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557f0f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:40:36, skipping insertion in model container [2021-12-22 14:40:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29" (2/3) ... [2021-12-22 14:40:36,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557f0f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:40:36, skipping insertion in model container [2021-12-22 14:40:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:40:36" (3/3) ... [2021-12-22 14:40:36,024 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-12-22 14:40:36,027 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:40:36,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:40:36,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:40:36,068 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:40:36,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:40:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2021-12-22 14:40:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:40:36,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:36,119 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:36,120 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1790507018, now seen corresponding path program 1 times [2021-12-22 14:40:36,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919548999] [2021-12-22 14:40:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:36,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 14:40:36,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:36,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919548999] [2021-12-22 14:40:36,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919548999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:36,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:36,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:40:36,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618142863] [2021-12-22 14:40:36,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:36,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:40:36,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:36,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:40:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:40:36,556 INFO L87 Difference]: Start difference. First operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:40:38,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:42,662 INFO L93 Difference]: Finished difference Result 4845 states and 7288 transitions. [2021-12-22 14:40:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:40:42,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-22 14:40:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:42,689 INFO L225 Difference]: With dead ends: 4845 [2021-12-22 14:40:42,690 INFO L226 Difference]: Without dead ends: 3260 [2021-12-22 14:40:42,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:40:42,702 INFO L933 BasicCegarLoop]: 2535 mSDtfsCounter, 2777 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 776 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 5810 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:42,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 5810 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-12-22 14:40:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-12-22 14:40:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3042. [2021-12-22 14:40:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2325 states have (on average 1.4055913978494623) internal successors, (3268), 2349 states have internal predecessors, (3268), 606 states have call successors, (606), 111 states have call predecessors, (606), 110 states have return successors, (605), 605 states have call predecessors, (605), 605 states have call successors, (605) [2021-12-22 14:40:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4479 transitions. [2021-12-22 14:40:42,885 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4479 transitions. Word has length 39 [2021-12-22 14:40:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:42,886 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 4479 transitions. [2021-12-22 14:40:42,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:40:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4479 transitions. [2021-12-22 14:40:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 14:40:42,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:42,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:42,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:40:42,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:42,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:42,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1277499630, now seen corresponding path program 1 times [2021-12-22 14:40:42,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:42,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724103162] [2021-12-22 14:40:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:42,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:40:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 14:40:43,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:43,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724103162] [2021-12-22 14:40:43,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724103162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:43,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:43,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:40:43,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840679543] [2021-12-22 14:40:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:43,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:40:43,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:40:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:40:43,180 INFO L87 Difference]: Start difference. First operand 3042 states and 4479 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:40:45,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:49,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:51,981 INFO L93 Difference]: Finished difference Result 9539 states and 14216 transitions. [2021-12-22 14:40:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:40:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-12-22 14:40:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:52,014 INFO L225 Difference]: With dead ends: 9539 [2021-12-22 14:40:52,014 INFO L226 Difference]: Without dead ends: 6498 [2021-12-22 14:40:52,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:40:52,029 INFO L933 BasicCegarLoop]: 2577 mSDtfsCounter, 2780 mSDsluCounter, 8040 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 754 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 10617 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:52,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2982 Valid, 10617 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 1878 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2021-12-22 14:40:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-12-22 14:40:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6092. [2021-12-22 14:40:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 4657 states have (on average 1.4056259394459953) internal successors, (6546), 4707 states have internal predecessors, (6546), 1208 states have call successors, (1208), 221 states have call predecessors, (1208), 226 states have return successors, (1237), 1211 states have call predecessors, (1237), 1207 states have call successors, (1237) [2021-12-22 14:40:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 8991 transitions. [2021-12-22 14:40:52,260 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 8991 transitions. Word has length 49 [2021-12-22 14:40:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:52,262 INFO L470 AbstractCegarLoop]: Abstraction has 6092 states and 8991 transitions. [2021-12-22 14:40:52,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:40:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 8991 transitions. [2021-12-22 14:40:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 14:40:52,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:52,272 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-22 14:40:52,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:40:52,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash 41662539, now seen corresponding path program 1 times [2021-12-22 14:40:52,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343860414] [2021-12-22 14:40:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:52,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:40:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:40:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:40:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:40:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:40:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-22 14:40:52,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:52,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343860414] [2021-12-22 14:40:52,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343860414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:52,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:52,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:40:52,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680621388] [2021-12-22 14:40:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:52,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:40:52,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:40:52,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:40:52,573 INFO L87 Difference]: Start difference. First operand 6092 states and 8991 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:40:54,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:58,675 INFO L93 Difference]: Finished difference Result 13999 states and 20777 transitions. [2021-12-22 14:40:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:40:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2021-12-22 14:40:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:58,708 INFO L225 Difference]: With dead ends: 13999 [2021-12-22 14:40:58,708 INFO L226 Difference]: Without dead ends: 7917 [2021-12-22 14:40:58,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:40:58,729 INFO L933 BasicCegarLoop]: 2221 mSDtfsCounter, 1720 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 1188 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:58,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 5273 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-12-22 14:40:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2021-12-22 14:40:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7421. [2021-12-22 14:40:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 5764 states have (on average 1.4191533657182511) internal successors, (8180), 5814 states have internal predecessors, (8180), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 295 states have return successors, (1390), 1364 states have call predecessors, (1390), 1360 states have call successors, (1390) [2021-12-22 14:40:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 10931 transitions. [2021-12-22 14:40:58,992 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 10931 transitions. Word has length 117 [2021-12-22 14:40:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:58,994 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 10931 transitions. [2021-12-22 14:40:58,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:40:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 10931 transitions. [2021-12-22 14:40:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 14:40:59,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:59,013 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:59,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:40:59,013 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2139715759, now seen corresponding path program 1 times [2021-12-22 14:40:59,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:59,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875965609] [2021-12-22 14:40:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:59,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:40:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:40:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:40:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:40:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:40:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:40:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:40:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:40:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 14:40:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-22 14:40:59,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:59,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875965609] [2021-12-22 14:40:59,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875965609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:59,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:59,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:40:59,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354279484] [2021-12-22 14:40:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:59,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:40:59,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:59,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:40:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:40:59,526 INFO L87 Difference]: Start difference. First operand 7421 states and 10931 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 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) [2021-12-22 14:41:01,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:41:06,816 INFO L93 Difference]: Finished difference Result 15293 states and 22715 transitions. [2021-12-22 14:41:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:41:06,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 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 157 [2021-12-22 14:41:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:41:06,851 INFO L225 Difference]: With dead ends: 15293 [2021-12-22 14:41:06,852 INFO L226 Difference]: Without dead ends: 7889 [2021-12-22 14:41:06,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:41:06,872 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 603 mSDsluCounter, 8089 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 685 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 10268 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:41:06,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 10268 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2418 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-12-22 14:41:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7889 states. [2021-12-22 14:41:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7889 to 7421. [2021-12-22 14:41:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 5760 states have (on average 1.4180555555555556) internal successors, (8168), 5812 states have internal predecessors, (8168), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 299 states have return successors, (1398), 1366 states have call predecessors, (1398), 1360 states have call successors, (1398) [2021-12-22 14:41:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 10927 transitions. [2021-12-22 14:41:07,078 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 10927 transitions. Word has length 157 [2021-12-22 14:41:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:41:07,078 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 10927 transitions. [2021-12-22 14:41:07,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 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) [2021-12-22 14:41:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 10927 transitions. [2021-12-22 14:41:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-22 14:41:07,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:41:07,090 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:41:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:41:07,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:41:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:41:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash -55648936, now seen corresponding path program 1 times [2021-12-22 14:41:07,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:41:07,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176666845] [2021-12-22 14:41:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:41:07,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:41:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:41:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:41:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:41:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:41:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:41:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:41:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:41:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:41:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:41:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:41:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:41:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:41:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:41:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-22 14:41:07,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:41:07,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176666845] [2021-12-22 14:41:07,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176666845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:41:07,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:41:07,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:41:07,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850145009] [2021-12-22 14:41:07,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:41:07,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:41:07,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:41:07,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:41:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:41:07,478 INFO L87 Difference]: Start difference. First operand 7421 states and 10927 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:41:09,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:41:13,419 INFO L93 Difference]: Finished difference Result 15369 states and 22867 transitions. [2021-12-22 14:41:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:41:13,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-12-22 14:41:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:41:13,464 INFO L225 Difference]: With dead ends: 15369 [2021-12-22 14:41:13,464 INFO L226 Difference]: Without dead ends: 7965 [2021-12-22 14:41:13,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:41:13,488 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 909 mSDsluCounter, 6991 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 1026 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 9170 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:41:13,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 9170 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 1764 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-12-22 14:41:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2021-12-22 14:41:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7453. [2021-12-22 14:41:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 5784 states have (on average 1.4163208852005533) internal successors, (8192), 5836 states have internal predecessors, (8192), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 307 states have return successors, (1462), 1374 states have call predecessors, (1462), 1360 states have call successors, (1462) [2021-12-22 14:41:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 11015 transitions. [2021-12-22 14:41:13,708 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 11015 transitions. Word has length 164 [2021-12-22 14:41:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:41:13,710 INFO L470 AbstractCegarLoop]: Abstraction has 7453 states and 11015 transitions. [2021-12-22 14:41:13,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:41:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 11015 transitions. [2021-12-22 14:41:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-22 14:41:13,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:41:13,721 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:41:13,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:41:13,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:41:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:41:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash -717777381, now seen corresponding path program 1 times [2021-12-22 14:41:13,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:41:13,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822138453] [2021-12-22 14:41:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:41:13,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:41:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:41:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:41:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:41:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:41:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:41:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:41:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:41:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:41:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:41:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:41:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:41:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:41:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 14:41:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-22 14:41:14,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:41:14,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822138453] [2021-12-22 14:41:14,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822138453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:41:14,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:41:14,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:41:14,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356536883] [2021-12-22 14:41:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:41:14,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:41:14,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:41:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:41:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:41:14,429 INFO L87 Difference]: Start difference. First operand 7453 states and 11015 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 14:41:16,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:19,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []