./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.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 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 11:35:25,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 11:35:25,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 11:35:25,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 11:35:25,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 11:35:25,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 11:35:25,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 11:35:25,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 11:35:25,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 11:35:25,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 11:35:25,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 11:35:25,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 11:35:25,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 11:35:25,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 11:35:25,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 11:35:25,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 11:35:25,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 11:35:25,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 11:35:25,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 11:35:25,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 11:35:25,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 11:35:25,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 11:35:25,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 11:35:25,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 11:35:25,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 11:35:25,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 11:35:25,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 11:35:25,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 11:35:25,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 11:35:25,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 11:35:25,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 11:35:25,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 11:35:25,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 11:35:25,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 11:35:25,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 11:35:25,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 11:35:25,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 11:35:25,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 11:35:25,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 11:35:25,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 11:35:25,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 11:35:25,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 11:35:26,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 11:35:26,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 11:35:26,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 11:35:26,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 11:35:26,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 11:35:26,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 11:35:26,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 11:35:26,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 11:35:26,018 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 11:35:26,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 11:35:26,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 11:35:26,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 11:35:26,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 11:35:26,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 11:35:26,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 11:35:26,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 11:35:26,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 11:35:26,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 11:35:26,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 11:35:26,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 11:35:26,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 11:35:26,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 11:35:26,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 11:35:26,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 11:35:26,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 11:35:26,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 11:35:26,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 11:35:26,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 11:35:26,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 11:35:26,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 11:35:26,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 11:35:26,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 [2021-12-18 11:35:26,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 11:35:26,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 11:35:26,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 11:35:26,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 11:35:26,306 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 11:35:26,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2021-12-18 11:35:26,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36667815e/1f74e42672f342fb803897f1aef7ff0e/FLAGe58d87aa5 [2021-12-18 11:35:27,186 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 11:35:27,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2021-12-18 11:35:27,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36667815e/1f74e42672f342fb803897f1aef7ff0e/FLAGe58d87aa5 [2021-12-18 11:35:27,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36667815e/1f74e42672f342fb803897f1aef7ff0e [2021-12-18 11:35:27,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 11:35:27,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 11:35:27,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 11:35:27,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 11:35:27,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 11:35:27,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:35:27" (1/1) ... [2021-12-18 11:35:27,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e10782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:27, skipping insertion in model container [2021-12-18 11:35:27,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:35:27" (1/1) ... [2021-12-18 11:35:27,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 11:35:27,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 11:35:30,206 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2021-12-18 11:35:30,209 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2021-12-18 11:35:30,210 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2021-12-18 11:35:30,210 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2021-12-18 11:35:30,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 11:35:30,296 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 11:35:30,577 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2021-12-18 11:35:30,577 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2021-12-18 11:35:30,578 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2021-12-18 11:35:30,578 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2021-12-18 11:35:30,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 11:35:30,780 INFO L208 MainTranslator]: Completed translation [2021-12-18 11:35:30,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30 WrapperNode [2021-12-18 11:35:30,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 11:35:30,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 11:35:30,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 11:35:30,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 11:35:30,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:30,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,057 INFO L137 Inliner]: procedures = 469, calls = 2629, calls flagged for inlining = 277, calls inlined = 249, statements flattened = 5809 [2021-12-18 11:35:31,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 11:35:31,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 11:35:31,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 11:35:31,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 11:35:31,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 11:35:31,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 11:35:31,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 11:35:31,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 11:35:31,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (1/1) ... [2021-12-18 11:35:31,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 11:35:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 11:35:31,390 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) [2021-12-18 11:35:31,394 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 [2021-12-18 11:35:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 11:35:31,416 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 11:35:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 11:35:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 11:35:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-18 11:35:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-18 11:35:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 11:35:31,417 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 11:35:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 11:35:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 11:35:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 11:35:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 11:35:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-12-18 11:35:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-12-18 11:35:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-12-18 11:35:31,418 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-12-18 11:35:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-18 11:35:31,419 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-18 11:35:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-12-18 11:35:31,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-12-18 11:35:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 11:35:31,419 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 11:35:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-18 11:35:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-18 11:35:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-12-18 11:35:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-12-18 11:35:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-18 11:35:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-18 11:35:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-18 11:35:31,420 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-18 11:35:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-12-18 11:35:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-12-18 11:35:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 11:35:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 11:35:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-18 11:35:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-18 11:35:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 11:35:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 11:35:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-18 11:35:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-18 11:35:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 11:35:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 11:35:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 11:35:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 11:35:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-18 11:35:31,423 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-18 11:35:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 11:35:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-18 11:35:31,423 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-18 11:35:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-12-18 11:35:31,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-12-18 11:35:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 11:35:31,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 11:35:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 11:35:31,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 11:35:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-18 11:35:31,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-18 11:35:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-12-18 11:35:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-12-18 11:35:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 11:35:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 11:35:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 11:35:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-18 11:35:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-18 11:35:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-12-18 11:35:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-12-18 11:35:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 11:35:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-18 11:35:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-18 11:35:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-18 11:35:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-18 11:35:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-18 11:35:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-18 11:35:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-12-18 11:35:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-12-18 11:35:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-18 11:35:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-18 11:35:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-18 11:35:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-18 11:35:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 11:35:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 11:35:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-12-18 11:35:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-12-18 11:35:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-12-18 11:35:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-12-18 11:35:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 11:35:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-18 11:35:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-18 11:35:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-18 11:35:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-18 11:35:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-12-18 11:35:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-12-18 11:35:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-12-18 11:35:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-12-18 11:35:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 11:35:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-12-18 11:35:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-12-18 11:35:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 11:35:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 11:35:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 11:35:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 11:35:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 11:35:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 11:35:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-18 11:35:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-18 11:35:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 11:35:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 11:35:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-18 11:35:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-18 11:35:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-12-18 11:35:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-12-18 11:35:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 11:35:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 11:35:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-12-18 11:35:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-12-18 11:35:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-18 11:35:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-18 11:35:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-18 11:35:31,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-18 11:35:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-18 11:35:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-18 11:35:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 11:35:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 11:35:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-18 11:35:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-18 11:35:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-12-18 11:35:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-12-18 11:35:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 11:35:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 11:35:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-12-18 11:35:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-12-18 11:35:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-12-18 11:35:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-12-18 11:35:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-18 11:35:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-18 11:35:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 11:35:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 11:35:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-18 11:35:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-18 11:35:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-18 11:35:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-18 11:35:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 11:35:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 11:35:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 11:35:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-18 11:35:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-12-18 11:35:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-12-18 11:35:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 11:35:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 11:35:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-18 11:35:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-18 11:35:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 11:35:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 11:35:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-12-18 11:35:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-12-18 11:35:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-12-18 11:35:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-12-18 11:35:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 11:35:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 11:35:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-12-18 11:35:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-12-18 11:35:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-12-18 11:35:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-12-18 11:35:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-18 11:35:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-18 11:35:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-12-18 11:35:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-12-18 11:35:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 11:35:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 11:35:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 11:35:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 11:35:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 11:35:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-18 11:35:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-18 11:35:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-12-18 11:35:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-12-18 11:35:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 11:35:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-12-18 11:35:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-12-18 11:35:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-12-18 11:35:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-12-18 11:35:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 11:35:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-12-18 11:35:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-12-18 11:35:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-12-18 11:35:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-12-18 11:35:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-18 11:35:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-18 11:35:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-12-18 11:35:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-12-18 11:35:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-12-18 11:35:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-12-18 11:35:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-12-18 11:35:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-12-18 11:35:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-12-18 11:35:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-12-18 11:35:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 11:35:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 11:35:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 11:35:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 11:35:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-18 11:35:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-18 11:35:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-18 11:35:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-18 11:35:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-18 11:35:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-18 11:35:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-18 11:35:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-18 11:35:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-18 11:35:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-18 11:35:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 11:35:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 11:35:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-12-18 11:35:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-12-18 11:35:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-12-18 11:35:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-12-18 11:35:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 11:35:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 11:35:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-12-18 11:35:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-12-18 11:35:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 11:35:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-18 11:35:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-18 11:35:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 11:35:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 11:35:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-12-18 11:35:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-12-18 11:35:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-18 11:35:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-18 11:35:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-12-18 11:35:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-12-18 11:35:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-12-18 11:35:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-12-18 11:35:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-12-18 11:35:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-12-18 11:35:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-12-18 11:35:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-12-18 11:35:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-18 11:35:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-18 11:35:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-18 11:35:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-18 11:35:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-18 11:35:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-18 11:35:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-18 11:35:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-18 11:35:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-12-18 11:35:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-12-18 11:35:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-12-18 11:35:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-12-18 11:35:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 11:35:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 11:35:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-18 11:35:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-18 11:35:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 11:35:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-12-18 11:35:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-12-18 11:35:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-12-18 11:35:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-12-18 11:35:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-18 11:35:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-18 11:35:32,381 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 11:35:32,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 11:35:32,570 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 11:42:39,026 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-18 11:42:39,102 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 11:42:39,123 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 11:42:39,123 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-18 11:42:39,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:42:39 BoogieIcfgContainer [2021-12-18 11:42:39,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 11:42:39,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 11:42:39,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 11:42:39,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 11:42:39,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:35:27" (1/3) ... [2021-12-18 11:42:39,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cb108c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:42:39, skipping insertion in model container [2021-12-18 11:42:39,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:35:30" (2/3) ... [2021-12-18 11:42:39,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cb108c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:42:39, skipping insertion in model container [2021-12-18 11:42:39,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:42:39" (3/3) ... [2021-12-18 11:42:39,141 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2021-12-18 11:42:39,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 11:42:39,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-18 11:42:39,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 11:42:39,219 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 [2021-12-18 11:42:39,220 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-18 11:42:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 2201 states, 1501 states have (on average 1.2771485676215857) internal successors, (1917), 1549 states have internal predecessors, (1917), 578 states have call successors, (578), 122 states have call predecessors, (578), 121 states have return successors, (569), 556 states have call predecessors, (569), 569 states have call successors, (569) [2021-12-18 11:42:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-18 11:42:39,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:42:39,310 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:42:39,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:42:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:42:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash 287325089, now seen corresponding path program 1 times [2021-12-18 11:42:39,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:42:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558295043] [2021-12-18 11:42:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:42:39,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:42:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:42:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:42:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:42:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:42:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:42:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:42:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:42:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:42:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:42:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:42:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:42:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:42:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:42:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:42:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:42:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 11:42:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-18 11:42:41,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:42:41,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558295043] [2021-12-18 11:42:41,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558295043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:42:41,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:42:41,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:42:41,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458201128] [2021-12-18 11:42:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:42:41,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:42:41,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:42:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:42:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:42:41,564 INFO L87 Difference]: Start difference. First operand has 2201 states, 1501 states have (on average 1.2771485676215857) internal successors, (1917), 1549 states have internal predecessors, (1917), 578 states have call successors, (578), 122 states have call predecessors, (578), 121 states have return successors, (569), 556 states have call predecessors, (569), 569 states have call successors, (569) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 11:42:43,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:42:46,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:42:58,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:42:58,041 INFO L93 Difference]: Finished difference Result 6481 states and 9235 transitions. [2021-12-18 11:42:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:42:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 183 [2021-12-18 11:42:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:42:58,096 INFO L225 Difference]: With dead ends: 6481 [2021-12-18 11:42:58,096 INFO L226 Difference]: Without dead ends: 4299 [2021-12-18 11:42:58,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:42:58,117 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 3703 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 1733 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 6505 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1733 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-12-18 11:42:58,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4191 Valid, 6505 Invalid, 3704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1733 Valid, 1969 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2021-12-18 11:42:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2021-12-18 11:42:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4201. [2021-12-18 11:42:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 2860 states have (on average 1.2615384615384615) internal successors, (3608), 2953 states have internal predecessors, (3608), 1100 states have call successors, (1100), 240 states have call predecessors, (1100), 239 states have return successors, (1097), 1071 states have call predecessors, (1097), 1097 states have call successors, (1097) [2021-12-18 11:42:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 5805 transitions. [2021-12-18 11:42:58,445 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 5805 transitions. Word has length 183 [2021-12-18 11:42:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:42:58,449 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 5805 transitions. [2021-12-18 11:42:58,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 11:42:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 5805 transitions. [2021-12-18 11:42:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-18 11:42:58,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:42:58,461 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:42:58,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 11:42:58,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:42:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:42:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1496669546, now seen corresponding path program 1 times [2021-12-18 11:42:58,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:42:58,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198137197] [2021-12-18 11:42:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:42:58,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:42:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:42:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:42:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:42:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:42:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:42:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:42:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:42:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:42:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:42:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:42:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:42:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:42:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:42:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:42:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:42:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:42:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:42:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 11:43:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 11:43:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-18 11:43:00,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:43:00,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198137197] [2021-12-18 11:43:00,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198137197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:43:00,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:43:00,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:43:00,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045436250] [2021-12-18 11:43:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:43:00,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:43:00,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:43:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:43:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:43:00,065 INFO L87 Difference]: Start difference. First operand 4201 states and 5805 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 11:43:02,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:43:04,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:43:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:43:17,071 INFO L93 Difference]: Finished difference Result 10047 states and 13945 transitions. [2021-12-18 11:43:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:43:17,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 204 [2021-12-18 11:43:17,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:43:17,115 INFO L225 Difference]: With dead ends: 10047 [2021-12-18 11:43:17,116 INFO L226 Difference]: Without dead ends: 5879 [2021-12-18 11:43:17,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:43:17,139 INFO L933 BasicCegarLoop]: 3088 mSDtfsCounter, 3311 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 1655 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 6401 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1655 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-18 11:43:17,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3741 Valid, 6401 Invalid, 3596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1655 Valid, 1939 Invalid, 2 Unknown, 0 Unchecked, 16.4s Time] [2021-12-18 11:43:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2021-12-18 11:43:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5726. [2021-12-18 11:43:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 3899 states have (on average 1.254167735316748) internal successors, (4890), 4025 states have internal predecessors, (4890), 1480 states have call successors, (1480), 347 states have call predecessors, (1480), 345 states have return successors, (1477), 1435 states have call predecessors, (1477), 1477 states have call successors, (1477) [2021-12-18 11:43:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 7847 transitions. [2021-12-18 11:43:17,394 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 7847 transitions. Word has length 204 [2021-12-18 11:43:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:43:17,395 INFO L470 AbstractCegarLoop]: Abstraction has 5726 states and 7847 transitions. [2021-12-18 11:43:17,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 11:43:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 7847 transitions. [2021-12-18 11:43:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-18 11:43:17,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:43:17,402 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 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] [2021-12-18 11:43:17,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 11:43:17,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:43:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:43:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1608232496, now seen corresponding path program 1 times [2021-12-18 11:43:17,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:43:17,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112350187] [2021-12-18 11:43:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:43:17,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:43:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:43:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:43:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:43:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:43:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:43:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:43:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:43:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:43:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:43:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:43:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:43:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:43:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:43:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:43:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:43:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 11:43:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:43:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:43:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 11:43:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2021-12-18 11:43:18,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:43:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112350187] [2021-12-18 11:43:18,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112350187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:43:18,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:43:18,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:43:18,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796409954] [2021-12-18 11:43:18,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:43:18,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:43:18,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:43:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:43:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:43:18,774 INFO L87 Difference]: Start difference. First operand 5726 states and 7847 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 11:43:20,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:43:23,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:43:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:43:35,237 INFO L93 Difference]: Finished difference Result 15367 states and 21224 transitions. [2021-12-18 11:43:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:43:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2021-12-18 11:43:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:43:35,306 INFO L225 Difference]: With dead ends: 15367 [2021-12-18 11:43:35,307 INFO L226 Difference]: Without dead ends: 9674 [2021-12-18 11:43:35,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:43:35,342 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 3633 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 1720 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1720 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-12-18 11:43:35,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4116 Valid, 6477 Invalid, 3697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1720 Valid, 1975 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2021-12-18 11:43:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2021-12-18 11:43:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 9421. [2021-12-18 11:43:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9421 states, 6420 states have (on average 1.2523364485981308) internal successors, (8040), 6639 states have internal predecessors, (8040), 2429 states have call successors, (2429), 573 states have call predecessors, (2429), 570 states have return successors, (2426), 2347 states have call predecessors, (2426), 2426 states have call successors, (2426) [2021-12-18 11:43:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9421 states to 9421 states and 12895 transitions. [2021-12-18 11:43:35,768 INFO L78 Accepts]: Start accepts. Automaton has 9421 states and 12895 transitions. Word has length 215 [2021-12-18 11:43:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:43:35,769 INFO L470 AbstractCegarLoop]: Abstraction has 9421 states and 12895 transitions. [2021-12-18 11:43:35,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 11:43:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 9421 states and 12895 transitions. [2021-12-18 11:43:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-18 11:43:35,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:43:35,781 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:43:35,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 11:43:35,782 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:43:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:43:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1632121381, now seen corresponding path program 1 times [2021-12-18 11:43:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:43:35,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606469653] [2021-12-18 11:43:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:43:35,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:43:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:43:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:43:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:43:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:43:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:43:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:43:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:43:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:43:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:43:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:43:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:43:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:43:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:43:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:43:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:43:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:43:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:43:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:43:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 11:43:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 11:43:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 11:43:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 11:43:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2021-12-18 11:43:37,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:43:37,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606469653] [2021-12-18 11:43:37,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606469653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:43:37,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:43:37,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:43:37,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203152422] [2021-12-18 11:43:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:43:37,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:43:37,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:43:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:43:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:43:37,215 INFO L87 Difference]: Start difference. First operand 9421 states and 12895 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 11:43:39,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:43:41,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:43:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:43:52,866 INFO L93 Difference]: Finished difference Result 25030 states and 34581 transitions. [2021-12-18 11:43:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:43:52,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 244 [2021-12-18 11:43:52,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:43:52,964 INFO L225 Difference]: With dead ends: 25030 [2021-12-18 11:43:52,964 INFO L226 Difference]: Without dead ends: 17299 [2021-12-18 11:43:53,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:43:53,008 INFO L933 BasicCegarLoop]: 5223 mSDtfsCounter, 2985 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 1221 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3469 SdHoareTripleChecker+Valid, 9534 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1221 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-12-18 11:43:53,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3469 Valid, 9534 Invalid, 3209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1221 Valid, 1986 Invalid, 2 Unknown, 0 Unchecked, 15.0s Time] [2021-12-18 11:43:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17299 states. [2021-12-18 11:43:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17299 to 16865. [2021-12-18 11:43:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16865 states, 11500 states have (on average 1.2528695652173913) internal successors, (14408), 11883 states have internal predecessors, (14408), 4340 states have call successors, (4340), 1026 states have call predecessors, (4340), 1023 states have return successors, (4337), 4208 states have call predecessors, (4337), 4337 states have call successors, (4337) [2021-12-18 11:43:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 23085 transitions. [2021-12-18 11:43:53,722 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 23085 transitions. Word has length 244 [2021-12-18 11:43:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:43:53,723 INFO L470 AbstractCegarLoop]: Abstraction has 16865 states and 23085 transitions. [2021-12-18 11:43:53,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 11:43:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 23085 transitions. [2021-12-18 11:43:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-18 11:43:53,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:43:53,735 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:43:53,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 11:43:53,735 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:43:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:43:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1694160995, now seen corresponding path program 1 times [2021-12-18 11:43:53,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:43:53,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936926438] [2021-12-18 11:43:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:43:53,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:43:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:43:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:43:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:43:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:43:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:43:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:43:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:43:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:43:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:43:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:43:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:43:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:43:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:43:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:43:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:43:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:43:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:43:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:43:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 11:43:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:43:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 11:43:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 11:43:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 11:43:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:43:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2021-12-18 11:43:54,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:43:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936926438] [2021-12-18 11:43:54,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936926438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:43:54,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:43:54,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 11:43:54,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632571334] [2021-12-18 11:43:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:43:54,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 11:43:54,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:43:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 11:43:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:43:54,982 INFO L87 Difference]: Start difference. First operand 16865 states and 23085 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 11:43:57,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:44:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:44:05,244 INFO L93 Difference]: Finished difference Result 17297 states and 23955 transitions. [2021-12-18 11:44:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:44:05,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 244 [2021-12-18 11:44:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:44:05,333 INFO L225 Difference]: With dead ends: 17297 [2021-12-18 11:44:05,333 INFO L226 Difference]: Without dead ends: 17242 [2021-12-18 11:44:05,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 11:44:05,355 INFO L933 BasicCegarLoop]: 2770 mSDtfsCounter, 3011 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 1161 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-18 11:44:05,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 6115 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 1413 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-12-18 11:44:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2021-12-18 11:44:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 16810. [2021-12-18 11:44:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16810 states, 11475 states have (on average 1.2523747276688453) internal successors, (14371), 11846 states have internal predecessors, (14371), 4313 states have call successors, (4313), 1021 states have call predecessors, (4313), 1021 states have return successors, (4313), 4195 states have call predecessors, (4313), 4313 states have call successors, (4313) [2021-12-18 11:44:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16810 states to 16810 states and 22997 transitions. [2021-12-18 11:44:06,053 INFO L78 Accepts]: Start accepts. Automaton has 16810 states and 22997 transitions. Word has length 244 [2021-12-18 11:44:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:44:06,054 INFO L470 AbstractCegarLoop]: Abstraction has 16810 states and 22997 transitions. [2021-12-18 11:44:06,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 11:44:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 16810 states and 22997 transitions. [2021-12-18 11:44:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-12-18 11:44:06,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:44:06,091 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:44:06,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 11:44:06,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:44:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:44:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1013221062, now seen corresponding path program 1 times [2021-12-18 11:44:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:44:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090980991] [2021-12-18 11:44:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:44:06,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:44:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:44:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:44:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:44:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:44:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:44:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:44:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:44:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:44:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:44:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:44:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:44:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:44:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:44:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:44:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:44:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:44:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:44:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:44:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 11:44:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 11:44:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 11:44:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 11:44:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 11:44:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 11:44:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-12-18 11:44:07,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:44:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090980991] [2021-12-18 11:44:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090980991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:44:07,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:44:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:44:07,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231231703] [2021-12-18 11:44:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:44:07,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:44:07,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:44:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:44:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:44:07,700 INFO L87 Difference]: Start difference. First operand 16810 states and 22997 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-18 11:44:09,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:44:12,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:44:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:44:23,190 INFO L93 Difference]: Finished difference Result 39508 states and 54449 transitions. [2021-12-18 11:44:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:44:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 273 [2021-12-18 11:44:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:44:23,297 INFO L225 Difference]: With dead ends: 39508 [2021-12-18 11:44:23,297 INFO L226 Difference]: Without dead ends: 24388 [2021-12-18 11:44:23,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:44:23,356 INFO L933 BasicCegarLoop]: 4870 mSDtfsCounter, 2622 mSDsluCounter, 4050 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 1194 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 8920 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-12-18 11:44:23,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3048 Valid, 8920 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 1949 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2021-12-18 11:44:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24388 states. [2021-12-18 11:44:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24388 to 23760. [2021-12-18 11:44:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23760 states, 16217 states have (on average 1.250724548313498) internal successors, (20283), 16740 states have internal predecessors, (20283), 6081 states have call successors, (6081), 1461 states have call predecessors, (6081), 1461 states have return successors, (6081), 5911 states have call predecessors, (6081), 6081 states have call successors, (6081) [2021-12-18 11:44:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23760 states to 23760 states and 32445 transitions. [2021-12-18 11:44:24,295 INFO L78 Accepts]: Start accepts. Automaton has 23760 states and 32445 transitions. Word has length 273 [2021-12-18 11:44:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:44:24,296 INFO L470 AbstractCegarLoop]: Abstraction has 23760 states and 32445 transitions. [2021-12-18 11:44:24,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-18 11:44:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 23760 states and 32445 transitions. [2021-12-18 11:44:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 11:44:24,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:44:24,338 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 14, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:44:24,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 11:44:24,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:44:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:44:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2016058546, now seen corresponding path program 1 times [2021-12-18 11:44:24,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:44:24,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572619431] [2021-12-18 11:44:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:44:24,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:44:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:44:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:44:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:44:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:44:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:44:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:44:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:44:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:44:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:44:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:44:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:44:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:44:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:44:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:44:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:44:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:44:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:44:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:44:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 11:44:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 11:44:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 11:44:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 11:44:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 11:44:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 11:44:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:44:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:44:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 11:44:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2021-12-18 11:44:25,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:44:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572619431] [2021-12-18 11:44:25,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572619431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:44:25,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:44:25,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:44:25,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466112877] [2021-12-18 11:44:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:44:25,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:44:25,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:44:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:44:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:44:25,758 INFO L87 Difference]: Start difference. First operand 23760 states and 32445 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 11:44:27,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:44:30,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:44:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:44:41,875 INFO L93 Difference]: Finished difference Result 57613 states and 79275 transitions. [2021-12-18 11:44:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:44:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 298 [2021-12-18 11:44:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:44:42,054 INFO L225 Difference]: With dead ends: 57613 [2021-12-18 11:44:42,054 INFO L226 Difference]: Without dead ends: 33782 [2021-12-18 11:44:42,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:44:42,157 INFO L933 BasicCegarLoop]: 5228 mSDtfsCounter, 2935 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 1203 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3416 SdHoareTripleChecker+Valid, 9515 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1203 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-18 11:44:42,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3416 Valid, 9515 Invalid, 3178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1203 Valid, 1973 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2021-12-18 11:44:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33782 states. [2021-12-18 11:44:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33782 to 32916. [2021-12-18 11:44:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32916 states, 22450 states have (on average 1.251314031180401) internal successors, (28092), 23174 states have internal predecessors, (28092), 8439 states have call successors, (8439), 2026 states have call predecessors, (8439), 2026 states have return successors, (8439), 8207 states have call predecessors, (8439), 8439 states have call successors, (8439) [2021-12-18 11:44:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32916 states to 32916 states and 44970 transitions. [2021-12-18 11:44:43,471 INFO L78 Accepts]: Start accepts. Automaton has 32916 states and 44970 transitions. Word has length 298 [2021-12-18 11:44:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:44:43,471 INFO L470 AbstractCegarLoop]: Abstraction has 32916 states and 44970 transitions. [2021-12-18 11:44:43,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 11:44:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 32916 states and 44970 transitions. [2021-12-18 11:44:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-18 11:44:43,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:44:43,523 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:44:43,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 11:44:43,524 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:44:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:44:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash -551890333, now seen corresponding path program 1 times [2021-12-18 11:44:43,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:44:43,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855259154] [2021-12-18 11:44:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:44:43,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:44:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:44:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:44:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:44:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:44:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:44:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:44:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:44:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:44:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:44:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:44:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:44:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:44:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:44:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:44:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:44:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:44:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:44:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:44:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 11:44:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 11:44:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 11:44:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 11:44:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-18 11:44:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-18 11:44:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-18 11:44:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 11:44:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 11:44:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:44:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:44:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:44:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-18 11:44:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:44:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-12-18 11:44:45,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:44:45,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855259154] [2021-12-18 11:44:45,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855259154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:44:45,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:44:45,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:44:45,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962009632] [2021-12-18 11:44:45,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:44:45,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:44:45,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:44:45,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:44:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:44:45,211 INFO L87 Difference]: Start difference. First operand 32916 states and 44970 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 11:44:47,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:44:49,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:45:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:45:01,538 INFO L93 Difference]: Finished difference Result 76129 states and 104735 transitions. [2021-12-18 11:45:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:45:01,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 324 [2021-12-18 11:45:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:45:01,730 INFO L225 Difference]: With dead ends: 76129 [2021-12-18 11:45:01,731 INFO L226 Difference]: Without dead ends: 43178 [2021-12-18 11:45:01,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:45:01,829 INFO L933 BasicCegarLoop]: 5382 mSDtfsCounter, 2925 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 1156 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3406 SdHoareTripleChecker+Valid, 9772 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-12-18 11:45:01,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3406 Valid, 9772 Invalid, 3122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1156 Valid, 1964 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2021-12-18 11:45:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43178 states. [2021-12-18 11:45:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43178 to 32916. [2021-12-18 11:45:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32916 states, 22450 states have (on average 1.2512694877505568) internal successors, (28091), 23174 states have internal predecessors, (28091), 8439 states have call successors, (8439), 2026 states have call predecessors, (8439), 2026 states have return successors, (8439), 8207 states have call predecessors, (8439), 8439 states have call successors, (8439) [2021-12-18 11:45:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32916 states to 32916 states and 44969 transitions. [2021-12-18 11:45:03,395 INFO L78 Accepts]: Start accepts. Automaton has 32916 states and 44969 transitions. Word has length 324 [2021-12-18 11:45:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:45:03,397 INFO L470 AbstractCegarLoop]: Abstraction has 32916 states and 44969 transitions. [2021-12-18 11:45:03,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 11:45:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32916 states and 44969 transitions. [2021-12-18 11:45:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-18 11:45:03,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:45:03,437 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:45:03,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 11:45:03,438 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:45:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:45:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1694392799, now seen corresponding path program 1 times [2021-12-18 11:45:03,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:45:03,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011993983] [2021-12-18 11:45:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:45:03,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:45:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:45:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:45:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:45:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:45:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:45:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:45:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:45:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:45:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:45:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:45:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:45:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:45:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:45:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:45:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:45:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:45:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:45:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:45:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 11:45:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 11:45:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 11:45:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 11:45:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-18 11:45:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-18 11:45:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-18 11:45:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 11:45:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 11:45:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:45:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:45:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-18 11:45:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2021-12-18 11:45:05,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:45:05,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011993983] [2021-12-18 11:45:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011993983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:45:05,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:45:05,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:45:05,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622434598] [2021-12-18 11:45:05,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:45:05,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:45:05,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:45:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:45:05,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:45:05,100 INFO L87 Difference]: Start difference. First operand 32916 states and 44969 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-18 11:45:07,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:45:09,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:45:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:45:21,601 INFO L93 Difference]: Finished difference Result 81511 states and 112197 transitions. [2021-12-18 11:45:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:45:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 324 [2021-12-18 11:45:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:45:21,929 INFO L225 Difference]: With dead ends: 81511 [2021-12-18 11:45:21,930 INFO L226 Difference]: Without dead ends: 50285 [2021-12-18 11:45:22,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:45:22,008 INFO L933 BasicCegarLoop]: 5344 mSDtfsCounter, 2887 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 1162 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 9692 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1162 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-12-18 11:45:22,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3368 Valid, 9692 Invalid, 3159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1162 Valid, 1995 Invalid, 2 Unknown, 0 Unchecked, 15.0s Time] [2021-12-18 11:45:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50285 states. [2021-12-18 11:45:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50285 to 48981. [2021-12-18 11:45:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48981 states, 33406 states have (on average 1.250493923247321) internal successors, (41774), 34495 states have internal predecessors, (41774), 12552 states have call successors, (12552), 3022 states have call predecessors, (12552), 3022 states have return successors, (12552), 12201 states have call predecessors, (12552), 12552 states have call successors, (12552) [2021-12-18 11:45:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48981 states to 48981 states and 66878 transitions. [2021-12-18 11:45:23,972 INFO L78 Accepts]: Start accepts. Automaton has 48981 states and 66878 transitions. Word has length 324 [2021-12-18 11:45:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:45:23,973 INFO L470 AbstractCegarLoop]: Abstraction has 48981 states and 66878 transitions. [2021-12-18 11:45:23,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-18 11:45:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 48981 states and 66878 transitions. [2021-12-18 11:45:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-18 11:45:24,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:45:24,043 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 14, 14, 14, 14, 9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:45:24,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 11:45:24,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:45:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:45:24,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1101823976, now seen corresponding path program 1 times [2021-12-18 11:45:24,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:45:24,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425721957] [2021-12-18 11:45:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:45:24,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:45:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:45:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:45:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:45:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:45:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:45:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:45:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:45:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:45:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:45:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:45:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:45:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:45:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:45:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:45:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:45:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:45:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:45:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:45:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 11:45:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 11:45:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 11:45:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 11:45:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 11:45:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:45:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:45:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-18 11:45:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:45:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:45:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 11:45:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-18 11:45:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-18 11:45:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-18 11:45:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2021-12-18 11:45:25,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:45:25,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425721957] [2021-12-18 11:45:25,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425721957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:45:25,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:45:25,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 11:45:25,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526452200] [2021-12-18 11:45:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:45:25,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 11:45:25,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:45:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 11:45:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 11:45:25,511 INFO L87 Difference]: Start difference. First operand 48981 states and 66878 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 11:45:27,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:45:29,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:45:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:45:42,188 INFO L93 Difference]: Finished difference Result 113329 states and 155793 transitions. [2021-12-18 11:45:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:45:42,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 347 [2021-12-18 11:45:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:45:42,648 INFO L225 Difference]: With dead ends: 113329 [2021-12-18 11:45:42,648 INFO L226 Difference]: Without dead ends: 64339 [2021-12-18 11:45:42,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:45:42,804 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 2603 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 1160 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3028 SdHoareTripleChecker+Valid, 9144 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1160 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-12-18 11:45:42,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3028 Valid, 9144 Invalid, 3104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1160 Valid, 1942 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-12-18 11:45:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64339 states. [2021-12-18 11:45:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64339 to 62654. [2021-12-18 11:45:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62654 states, 42727 states have (on average 1.2496313806258337) internal successors, (53393), 44119 states have internal predecessors, (53393), 16037 states have call successors, (16037), 3889 states have call predecessors, (16037), 3889 states have return successors, (16037), 15583 states have call predecessors, (16037), 16037 states have call successors, (16037) [2021-12-18 11:45:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62654 states to 62654 states and 85467 transitions. [2021-12-18 11:45:45,149 INFO L78 Accepts]: Start accepts. Automaton has 62654 states and 85467 transitions. Word has length 347 [2021-12-18 11:45:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:45:45,149 INFO L470 AbstractCegarLoop]: Abstraction has 62654 states and 85467 transitions. [2021-12-18 11:45:45,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 11:45:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 62654 states and 85467 transitions. [2021-12-18 11:45:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-18 11:45:45,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 11:45:45,214 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 14, 14, 14, 14, 9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 11:45:45,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 11:45:45,214 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 11:45:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 11:45:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1454912358, now seen corresponding path program 1 times [2021-12-18 11:45:45,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 11:45:45,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27673156] [2021-12-18 11:45:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 11:45:45,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 11:45:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 11:45:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 11:45:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 11:45:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 11:45:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 11:45:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 11:45:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 11:45:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 11:45:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 11:45:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 11:45:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 11:45:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 11:45:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 11:45:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 11:45:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 11:45:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 11:45:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 11:45:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 11:45:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 11:45:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 11:45:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 11:45:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 11:45:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 11:45:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:45:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:45:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-18 11:45:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 11:45:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 11:45:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 11:45:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 11:45:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-18 11:45:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-18 11:45:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-18 11:45:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 11:45:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2021-12-18 11:45:46,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 11:45:46,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27673156] [2021-12-18 11:45:46,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27673156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 11:45:46,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 11:45:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 11:45:46,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955312266] [2021-12-18 11:45:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 11:45:46,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 11:45:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 11:45:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 11:45:46,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 11:45:46,952 INFO L87 Difference]: Start difference. First operand 62654 states and 85467 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-18 11:45:49,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 11:45:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 11:45:57,765 INFO L93 Difference]: Finished difference Result 64370 states and 88809 transitions. [2021-12-18 11:45:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 11:45:57,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 347 [2021-12-18 11:45:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 11:45:57,773 INFO L225 Difference]: With dead ends: 64370 [2021-12-18 11:45:57,773 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 11:45:57,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 11:45:57,869 INFO L933 BasicCegarLoop]: 2743 mSDtfsCounter, 2940 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 1147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 6068 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-18 11:45:57,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3245 Valid, 6068 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 1394 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-18 11:45:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 11:45:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 11:45:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 11:45:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 11:45:57,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 347 [2021-12-18 11:45:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 11:45:57,881 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 11:45:57,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-18 11:45:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 11:45:57,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 11:45:57,884 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-18 11:45:57,884 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-18 11:45:57,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 11:45:57,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15