./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a80d5d6260f748dd9867d7bcd6f4a93a5987d3d416867522c1bef6a78e755228 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:18:28,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:18:28,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:18:28,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:18:28,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:18:28,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:18:28,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:18:28,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:18:28,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:18:28,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:18:28,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:18:28,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:18:28,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:18:28,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:18:28,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:18:28,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:18:28,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:18:28,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:18:28,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:18:28,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:18:28,892 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:18:28,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:18:28,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:18:28,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:18:28,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:18:28,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:18:28,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:18:28,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:18:28,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:18:28,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:18:28,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:18:28,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:18:28,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:18:28,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:18:28,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:18:28,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:18:28,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:18:28,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:18:28,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:18:28,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:18:28,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:18:28,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:18:28,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:18:28,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:18:28,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:18:28,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:18:28,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:18:28,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:18:28,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:18:28,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:18:28,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:18:28,959 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:18:28,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:18:28,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:18:28,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:18:28,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:18:28,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:18:28,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:18:28,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:18:28,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:18:28,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:18:28,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:18:28,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:18:28,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:18:28,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:18:28,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:18:28,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:18:28,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:18:28,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:18:28,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:18:28,964 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:18:28,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:18:28,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:18:28,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d5d6260f748dd9867d7bcd6f4a93a5987d3d416867522c1bef6a78e755228 [2022-07-20 00:18:29,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:18:29,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:18:29,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:18:29,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:18:29,220 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:18:29,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2022-07-20 00:18:29,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41cc3bbdd/a0407f2505594905849f6ed34d644ef8/FLAG515d55870 [2022-07-20 00:18:30,069 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:18:30,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2022-07-20 00:18:30,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41cc3bbdd/a0407f2505594905849f6ed34d644ef8/FLAG515d55870 [2022-07-20 00:18:30,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41cc3bbdd/a0407f2505594905849f6ed34d644ef8 [2022-07-20 00:18:30,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:18:30,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:18:30,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:18:30,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:18:30,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:18:30,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:18:30" (1/1) ... [2022-07-20 00:18:30,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375136c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:30, skipping insertion in model container [2022-07-20 00:18:30,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:18:30" (1/1) ... [2022-07-20 00:18:30,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:18:30,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:18:31,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2022-07-20 00:18:31,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:18:31,896 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:18:32,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2022-07-20 00:18:32,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:18:32,221 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:18:32,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32 WrapperNode [2022-07-20 00:18:32,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:18:32,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:18:32,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:18:32,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:18:32,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,454 INFO L137 Inliner]: procedures = 210, calls = 1426, calls flagged for inlining = 105, calls inlined = 105, statements flattened = 3494 [2022-07-20 00:18:32,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:18:32,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:18:32,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:18:32,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:18:32,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:18:32,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:18:32,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:18:32,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:18:32,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (1/1) ... [2022-07-20 00:18:32,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:18:32,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:18:32,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 00:18:32,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 00:18:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_fe_init [2022-07-20 00:18:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_fe_init [2022-07-20 00:18:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-07-20 00:18:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-07-20 00:18:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-20 00:18:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-20 00:18:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 00:18:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 00:18:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-20 00:18:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-20 00:18:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:18:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:18:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:18:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:18:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure wait_i2c_result [2022-07-20 00:18:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_i2c_result [2022-07-20 00:18:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-20 00:18:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-20 00:18:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-20 00:18:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-20 00:18:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:18:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:18:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_stop_streaming [2022-07-20 00:18:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_stop_streaming [2022-07-20 00:18:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-20 00:18:32,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-20 00:18:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-07-20 00:18:32,835 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-07-20 00:18:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-07-20 00:18:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-07-20 00:18:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask [2022-07-20 00:18:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask [2022-07-20 00:18:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_lnb_ctrl [2022-07-20 00:18:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_lnb_ctrl [2022-07-20 00:18:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 00:18:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 00:18:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:18:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:18:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:18:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:18:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-20 00:18:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-20 00:18:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_free_dmabuf [2022-07-20 00:18:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_free_dmabuf [2022-07-20 00:18:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-07-20 00:18:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-07-20 00:18:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_alloc_dmabuf [2022-07-20 00:18:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_alloc_dmabuf [2022-07-20 00:18:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:18:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:18:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-20 00:18:32,839 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-20 00:18:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-07-20 00:18:32,840 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-07-20 00:18:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-20 00:18:32,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-20 00:18:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2022-07-20 00:18:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2022-07-20 00:18:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-20 00:18:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-20 00:18:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:18:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:18:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-20 00:18:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-20 00:18:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_base [2022-07-20 00:18:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_base [2022-07-20 00:18:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-20 00:18:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-20 00:18:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-20 00:18:32,844 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-20 00:18:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-20 00:18:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_resume [2022-07-20 00:18:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_resume [2022-07-20 00:18:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-20 00:18:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-20 00:18:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-20 00:18:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_demod_write [2022-07-20 00:18:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_demod_write [2022-07-20 00:18:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-20 00:18:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-20 00:18:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 00:18:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure send_i2c_cmd [2022-07-20 00:18:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure send_i2c_cmd [2022-07-20 00:18:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 00:18:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 00:18:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter_packets [2022-07-20 00:18:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter_packets [2022-07-20 00:18:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 00:18:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 00:18:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure cmdbuf_add [2022-07-20 00:18:32,848 INFO L138 BoogieDeclarations]: Found implementation of procedure cmdbuf_add [2022-07-20 00:18:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 00:18:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-20 00:18:32,848 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-20 00:18:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_stop_dma [2022-07-20 00:18:32,849 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_stop_dma [2022-07-20 00:18:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:18:32,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:18:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure put_byte_write [2022-07-20 00:18:32,850 INFO L138 BoogieDeclarations]: Found implementation of procedure put_byte_write [2022-07-20 00:18:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_coherent_mask [2022-07-20 00:18:32,850 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_coherent_mask [2022-07-20 00:18:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:18:32,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:18:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:18:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_set_tuner_power [2022-07-20 00:18:32,851 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_set_tuner_power [2022-07-20 00:18:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:18:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure pci_ioremap_bar [2022-07-20 00:18:32,851 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_ioremap_bar [2022-07-20 00:18:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:18:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-20 00:18:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_suspend [2022-07-20 00:18:32,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_suspend [2022-07-20 00:18:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-20 00:18:32,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-20 00:18:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_start_dma [2022-07-20 00:18:32,853 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_start_dma [2022-07-20 00:18:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_find_adapter [2022-07-20 00:18:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_find_adapter [2022-07-20 00:18:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-07-20 00:18:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-07-20 00:18:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_init_dmabuf [2022-07-20 00:18:32,858 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_init_dmabuf [2022-07-20 00:18:32,858 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-20 00:18:32,858 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-20 00:18:32,858 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-20 00:18:32,859 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-20 00:18:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2022-07-20 00:18:32,863 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2022-07-20 00:18:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_cleanup_adapter [2022-07-20 00:18:32,864 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_cleanup_adapter [2022-07-20 00:18:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 00:18:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:18:32,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:18:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-20 00:18:32,864 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-20 00:18:33,488 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:18:33,491 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:18:36,145 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:18:46,898 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:18:46,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:18:46,910 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 00:18:46,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:18:46 BoogieIcfgContainer [2022-07-20 00:18:46,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:18:46,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:18:46,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:18:46,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:18:46,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:18:30" (1/3) ... [2022-07-20 00:18:46,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:18:46, skipping insertion in model container [2022-07-20 00:18:46,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:32" (2/3) ... [2022-07-20 00:18:46,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:18:46, skipping insertion in model container [2022-07-20 00:18:46,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:18:46" (3/3) ... [2022-07-20 00:18:46,920 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2022-07-20 00:18:46,931 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:18:46,932 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:18:47,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:18:47,061 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@18afe433, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6712c998 [2022-07-20 00:18:47,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:18:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 989 states, 739 states have (on average 1.3802435723951285) internal successors, (1020), 756 states have internal predecessors, (1020), 190 states have call successors, (190), 59 states have call predecessors, (190), 58 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) [2022-07-20 00:18:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 00:18:47,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:18:47,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:18:47,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:18:47,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:18:47,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1878981996, now seen corresponding path program 1 times [2022-07-20 00:18:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:18:47,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103900951] [2022-07-20 00:18:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:18:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:18:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:18:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:18:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:18:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:18:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:18:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:18:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 00:18:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:18:47,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103900951] [2022-07-20 00:18:47,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103900951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:18:47,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:18:47,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 00:18:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224549044] [2022-07-20 00:18:47,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:18:47,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 00:18:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:18:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 00:18:47,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:18:47,868 INFO L87 Difference]: Start difference. First operand has 989 states, 739 states have (on average 1.3802435723951285) internal successors, (1020), 756 states have internal predecessors, (1020), 190 states have call successors, (190), 59 states have call predecessors, (190), 58 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:18:50,125 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 [] [2022-07-20 00:18:53,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:18:55,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:18:57,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:18:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:18:57,637 INFO L93 Difference]: Finished difference Result 2071 states and 2997 transitions. [2022-07-20 00:18:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 00:18:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-07-20 00:18:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:18:57,660 INFO L225 Difference]: With dead ends: 2071 [2022-07-20 00:18:57,660 INFO L226 Difference]: Without dead ends: 1075 [2022-07-20 00:18:57,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:18:57,678 INFO L413 NwaCegarLoop]: 1346 mSDtfsCounter, 521 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 463 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:18:57,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 2107 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 373 Invalid, 4 Unknown, 0 Unchecked, 9.6s Time] [2022-07-20 00:18:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-07-20 00:18:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 977. [2022-07-20 00:18:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 734 states have (on average 1.3719346049046321) internal successors, (1007), 744 states have internal predecessors, (1007), 185 states have call successors, (185), 58 states have call predecessors, (185), 57 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2022-07-20 00:18:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1375 transitions. [2022-07-20 00:18:57,813 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1375 transitions. Word has length 51 [2022-07-20 00:18:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:18:57,814 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1375 transitions. [2022-07-20 00:18:57,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:18:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1375 transitions. [2022-07-20 00:18:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 00:18:57,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:18:57,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:18:57,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 00:18:57,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:18:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:18:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash 373161192, now seen corresponding path program 1 times [2022-07-20 00:18:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:18:57,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990245197] [2022-07-20 00:18:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:18:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:18:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:18:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:18:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:18:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:18:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:18:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:18:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:18:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 00:18:58,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:18:58,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990245197] [2022-07-20 00:18:58,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990245197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:18:58,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:18:58,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:18:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937559932] [2022-07-20 00:18:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:18:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:18:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:18:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:18:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:18:58,121 INFO L87 Difference]: Start difference. First operand 977 states and 1375 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-20 00:19:02,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:04,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:06,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:09,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:11,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:13,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:19:13,600 INFO L93 Difference]: Finished difference Result 3088 states and 4410 transitions. [2022-07-20 00:19:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:19:13,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2022-07-20 00:19:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:19:13,617 INFO L225 Difference]: With dead ends: 3088 [2022-07-20 00:19:13,617 INFO L226 Difference]: Without dead ends: 2121 [2022-07-20 00:19:13,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:19:13,624 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 1814 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 597 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:19:13,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 4050 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1393 Invalid, 6 Unknown, 0 Unchecked, 15.3s Time] [2022-07-20 00:19:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2022-07-20 00:19:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1922. [2022-07-20 00:19:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1444 states have (on average 1.3746537396121883) internal successors, (1985), 1463 states have internal predecessors, (1985), 363 states have call successors, (363), 115 states have call predecessors, (363), 114 states have return successors, (361), 361 states have call predecessors, (361), 361 states have call successors, (361) [2022-07-20 00:19:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2709 transitions. [2022-07-20 00:19:13,712 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2709 transitions. Word has length 51 [2022-07-20 00:19:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:19:13,712 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 2709 transitions. [2022-07-20 00:19:13,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-20 00:19:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2709 transitions. [2022-07-20 00:19:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-20 00:19:13,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:19:13,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:19:13,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 00:19:13,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:19:13,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:19:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash -133518992, now seen corresponding path program 1 times [2022-07-20 00:19:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:19:13,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143325274] [2022-07-20 00:19:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:19:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:19:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:19:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:19:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:19:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 00:19:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:19:14,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143325274] [2022-07-20 00:19:14,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143325274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:19:14,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:19:14,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:19:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724193121] [2022-07-20 00:19:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:19:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:19:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:19:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:19:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:19:14,030 INFO L87 Difference]: Start difference. First operand 1922 states and 2709 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-20 00:19:17,274 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 [] [2022-07-20 00:19:19,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:21,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:23,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:25,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:19:25,029 INFO L93 Difference]: Finished difference Result 6135 states and 8782 transitions. [2022-07-20 00:19:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:19:25,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2022-07-20 00:19:25,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:19:25,055 INFO L225 Difference]: With dead ends: 6135 [2022-07-20 00:19:25,055 INFO L226 Difference]: Without dead ends: 4218 [2022-07-20 00:19:25,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:19:25,065 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 2282 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 1057 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:19:25,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 3403 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 963 Invalid, 4 Unknown, 0 Unchecked, 10.8s Time] [2022-07-20 00:19:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2022-07-20 00:19:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 3822. [2022-07-20 00:19:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 2871 states have (on average 1.3747823058167885) internal successors, (3947), 2908 states have internal predecessors, (3947), 722 states have call successors, (722), 229 states have call predecessors, (722), 228 states have return successors, (724), 720 states have call predecessors, (724), 720 states have call successors, (724) [2022-07-20 00:19:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 5393 transitions. [2022-07-20 00:19:25,193 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 5393 transitions. Word has length 71 [2022-07-20 00:19:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:19:25,193 INFO L495 AbstractCegarLoop]: Abstraction has 3822 states and 5393 transitions. [2022-07-20 00:19:25,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-20 00:19:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 5393 transitions. [2022-07-20 00:19:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-20 00:19:25,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:19:25,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:19:25,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 00:19:25,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:19:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:19:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1826713808, now seen corresponding path program 1 times [2022-07-20 00:19:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:19:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530368078] [2022-07-20 00:19:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:19:25,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:19:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:19:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:19:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-20 00:19:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-20 00:19:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 00:19:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:19:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530368078] [2022-07-20 00:19:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530368078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:19:25,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:19:25,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:19:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913540828] [2022-07-20 00:19:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:19:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:19:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:19:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:19:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:19:25,498 INFO L87 Difference]: Start difference. First operand 3822 states and 5393 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 00:19:29,160 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 [] [2022-07-20 00:19:31,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:34,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:36,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:38,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:40,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:42,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:44,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:19:45,166 INFO L93 Difference]: Finished difference Result 11012 states and 15787 transitions. [2022-07-20 00:19:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:19:45,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2022-07-20 00:19:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:19:45,214 INFO L225 Difference]: With dead ends: 11012 [2022-07-20 00:19:45,214 INFO L226 Difference]: Without dead ends: 7200 [2022-07-20 00:19:45,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:19:45,236 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1324 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 454 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:19:45,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 4449 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1529 Invalid, 8 Unknown, 0 Unchecked, 19.4s Time] [2022-07-20 00:19:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-07-20 00:19:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 6498. [2022-07-20 00:19:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 4935 states have (on average 1.3860182370820668) internal successors, (6840), 4984 states have internal predecessors, (6840), 1188 states have call successors, (1188), 375 states have call predecessors, (1188), 374 states have return successors, (1190), 1186 states have call predecessors, (1190), 1186 states have call successors, (1190) [2022-07-20 00:19:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 9218 transitions. [2022-07-20 00:19:45,512 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 9218 transitions. Word has length 82 [2022-07-20 00:19:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:19:45,516 INFO L495 AbstractCegarLoop]: Abstraction has 6498 states and 9218 transitions. [2022-07-20 00:19:45,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 00:19:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 9218 transitions. [2022-07-20 00:19:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-20 00:19:45,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:19:45,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-20 00:19:45,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 00:19:45,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:19:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:19:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -513024234, now seen corresponding path program 1 times [2022-07-20 00:19:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:19:45,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41791114] [2022-07-20 00:19:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:19:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:19:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:19:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:19:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:19:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-20 00:19:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-20 00:19:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 00:19:45,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:19:45,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41791114] [2022-07-20 00:19:45,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41791114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:19:45,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:19:45,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:19:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242315944] [2022-07-20 00:19:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:19:45,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:19:45,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:19:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:19:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:19:45,851 INFO L87 Difference]: Start difference. First operand 6498 states and 9218 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:19:49,236 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 [] [2022-07-20 00:19:51,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:54,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:56,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:19:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:19:56,561 INFO L93 Difference]: Finished difference Result 10879 states and 15544 transitions. [2022-07-20 00:19:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:19:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-07-20 00:19:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:19:56,590 INFO L225 Difference]: With dead ends: 10879 [2022-07-20 00:19:56,591 INFO L226 Difference]: Without dead ends: 4400 [2022-07-20 00:19:56,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:19:56,619 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 524 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 443 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 3838 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:19:56,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 3838 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1064 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2022-07-20 00:19:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2022-07-20 00:19:56,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3974. [2022-07-20 00:19:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3023 states have (on average 1.385047965597089) internal successors, (4187), 3051 states have internal predecessors, (4187), 720 states have call successors, (720), 231 states have call predecessors, (720), 230 states have return successors, (720), 718 states have call predecessors, (720), 718 states have call successors, (720) [2022-07-20 00:19:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 5627 transitions. [2022-07-20 00:19:56,792 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 5627 transitions. Word has length 111 [2022-07-20 00:19:56,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:19:56,794 INFO L495 AbstractCegarLoop]: Abstraction has 3974 states and 5627 transitions. [2022-07-20 00:19:56,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:19:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 5627 transitions. [2022-07-20 00:19:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-20 00:19:56,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:19:56,808 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-20 00:19:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 00:19:56,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:19:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:19:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1864586980, now seen corresponding path program 1 times [2022-07-20 00:19:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:19:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10269630] [2022-07-20 00:19:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:19:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:19:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:19:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:19:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:19:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:19:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:19:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:19:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-20 00:19:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:19:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 00:19:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:19:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-20 00:19:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:19:57,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10269630] [2022-07-20 00:19:57,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10269630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:19:57,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:19:57,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:19:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091616998] [2022-07-20 00:19:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:19:57,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:19:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:19:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:19:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:19:57,271 INFO L87 Difference]: Start difference. First operand 3974 states and 5627 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-20 00:19:59,493 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 [] [2022-07-20 00:20:02,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:05,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:07,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:10,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:20:10,314 INFO L93 Difference]: Finished difference Result 9336 states and 13396 transitions. [2022-07-20 00:20:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:20:10,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 145 [2022-07-20 00:20:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:20:10,352 INFO L225 Difference]: With dead ends: 9336 [2022-07-20 00:20:10,352 INFO L226 Difference]: Without dead ends: 6049 [2022-07-20 00:20:10,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:20:10,370 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 2019 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 918 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 4451 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:20:10,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 4451 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1049 Invalid, 5 Unknown, 0 Unchecked, 12.8s Time] [2022-07-20 00:20:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6049 states. [2022-07-20 00:20:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6049 to 5452. [2022-07-20 00:20:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5452 states, 4153 states have (on average 1.3857452444016374) internal successors, (5755), 4187 states have internal predecessors, (5755), 974 states have call successors, (974), 325 states have call predecessors, (974), 324 states have return successors, (1000), 972 states have call predecessors, (1000), 972 states have call successors, (1000) [2022-07-20 00:20:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 7729 transitions. [2022-07-20 00:20:10,682 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 7729 transitions. Word has length 145 [2022-07-20 00:20:10,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:20:10,682 INFO L495 AbstractCegarLoop]: Abstraction has 5452 states and 7729 transitions. [2022-07-20 00:20:10,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-20 00:20:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 7729 transitions. [2022-07-20 00:20:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-20 00:20:10,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:20:10,693 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-20 00:20:10,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 00:20:10,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:20:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:20:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash 496313095, now seen corresponding path program 1 times [2022-07-20 00:20:10,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:20:10,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695227455] [2022-07-20 00:20:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:20:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:20:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:20:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:20:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:20:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:20:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:20:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-20 00:20:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-20 00:20:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-20 00:20:11,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:20:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695227455] [2022-07-20 00:20:11,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695227455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:20:11,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:20:11,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:20:11,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772574232] [2022-07-20 00:20:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:20:11,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:20:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:20:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:20:11,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:20:11,120 INFO L87 Difference]: Start difference. First operand 5452 states and 7729 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:20:13,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:17,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:20,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:22,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:25,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:27,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:29,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:31,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:20:31,638 INFO L93 Difference]: Finished difference Result 12919 states and 18519 transitions. [2022-07-20 00:20:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:20:31,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 156 [2022-07-20 00:20:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:20:31,697 INFO L225 Difference]: With dead ends: 12919 [2022-07-20 00:20:31,698 INFO L226 Difference]: Without dead ends: 8154 [2022-07-20 00:20:31,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:20:31,722 INFO L413 NwaCegarLoop]: 2503 mSDtfsCounter, 2254 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 1032 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 6689 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:20:31,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 6689 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1032 Valid, 1988 Invalid, 8 Unknown, 0 Unchecked, 20.2s Time] [2022-07-20 00:20:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2022-07-20 00:20:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 5456. [2022-07-20 00:20:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5456 states, 4157 states have (on average 1.3853740678373827) internal successors, (5759), 4191 states have internal predecessors, (5759), 974 states have call successors, (974), 325 states have call predecessors, (974), 324 states have return successors, (1000), 972 states have call predecessors, (1000), 972 states have call successors, (1000) [2022-07-20 00:20:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5456 states to 5456 states and 7733 transitions. [2022-07-20 00:20:31,998 INFO L78 Accepts]: Start accepts. Automaton has 5456 states and 7733 transitions. Word has length 156 [2022-07-20 00:20:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:20:31,999 INFO L495 AbstractCegarLoop]: Abstraction has 5456 states and 7733 transitions. [2022-07-20 00:20:31,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 00:20:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5456 states and 7733 transitions. [2022-07-20 00:20:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-20 00:20:32,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:20:32,010 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-20 00:20:32,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 00:20:32,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:20:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:20:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1260010002, now seen corresponding path program 1 times [2022-07-20 00:20:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:20:32,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396892435] [2022-07-20 00:20:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:20:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:20:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:20:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:20:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:20:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:20:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:20:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-20 00:20:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-20 00:20:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 00:20:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-20 00:20:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:20:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396892435] [2022-07-20 00:20:32,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396892435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:20:32,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:20:32,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:20:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963267065] [2022-07-20 00:20:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:20:32,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:20:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:20:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:20:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:20:32,433 INFO L87 Difference]: Start difference. First operand 5456 states and 7733 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-20 00:20:35,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:38,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:40,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:42,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:20:42,499 INFO L93 Difference]: Finished difference Result 10814 states and 15493 transitions. [2022-07-20 00:20:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:20:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 166 [2022-07-20 00:20:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:20:42,531 INFO L225 Difference]: With dead ends: 10814 [2022-07-20 00:20:42,532 INFO L226 Difference]: Without dead ends: 6045 [2022-07-20 00:20:42,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:20:42,548 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 519 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 456 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:20:42,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 3112 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 832 Invalid, 4 Unknown, 0 Unchecked, 9.8s Time] [2022-07-20 00:20:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2022-07-20 00:20:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5458. [2022-07-20 00:20:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 4159 states have (on average 1.3851887472950228) internal successors, (5761), 4193 states have internal predecessors, (5761), 974 states have call successors, (974), 325 states have call predecessors, (974), 324 states have return successors, (1000), 972 states have call predecessors, (1000), 972 states have call successors, (1000) [2022-07-20 00:20:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 7735 transitions. [2022-07-20 00:20:42,836 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 7735 transitions. Word has length 166 [2022-07-20 00:20:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:20:42,836 INFO L495 AbstractCegarLoop]: Abstraction has 5458 states and 7735 transitions. [2022-07-20 00:20:42,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-20 00:20:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 7735 transitions. [2022-07-20 00:20:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-20 00:20:42,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:20:42,847 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-20 00:20:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 00:20:42,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:20:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:20:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -826280916, now seen corresponding path program 1 times [2022-07-20 00:20:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:20:42,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936242205] [2022-07-20 00:20:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:20:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:20:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:20:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:20:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:20:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:20:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:20:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-20 00:20:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-20 00:20:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 00:20:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-20 00:20:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:20:43,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936242205] [2022-07-20 00:20:43,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936242205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:20:43,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:20:43,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:20:43,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88971243] [2022-07-20 00:20:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:20:43,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:20:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:20:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:20:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:20:43,298 INFO L87 Difference]: Start difference. First operand 5458 states and 7735 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-20 00:20:46,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:48,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:50,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:52,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:56,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:58,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:01,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:04,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:07,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:09,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:11,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:13,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:15,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:18,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:20,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:22,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:24,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:26,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:28,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:30,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:32,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:21:33,278 INFO L93 Difference]: Finished difference Result 13424 states and 19353 transitions. [2022-07-20 00:21:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 00:21:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 166 [2022-07-20 00:21:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:21:33,348 INFO L225 Difference]: With dead ends: 13424 [2022-07-20 00:21:33,348 INFO L226 Difference]: Without dead ends: 8653 [2022-07-20 00:21:33,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:21:33,362 INFO L413 NwaCegarLoop]: 2842 mSDtfsCounter, 2091 mSDsluCounter, 9536 mSDsCounter, 0 mSdLazyCounter, 4400 mSolverCounterSat, 565 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 12378 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 4400 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:21:33,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 12378 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 4400 Invalid, 21 Unknown, 0 Unchecked, 49.5s Time] [2022-07-20 00:21:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8653 states. [2022-07-20 00:21:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8653 to 7416. [2022-07-20 00:21:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7416 states, 5629 states have (on average 1.381240007106058) internal successors, (7775), 5687 states have internal predecessors, (7775), 1346 states have call successors, (1346), 441 states have call predecessors, (1346), 440 states have return successors, (1374), 1340 states have call predecessors, (1374), 1344 states have call successors, (1374) [2022-07-20 00:21:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7416 states to 7416 states and 10495 transitions. [2022-07-20 00:21:33,687 INFO L78 Accepts]: Start accepts. Automaton has 7416 states and 10495 transitions. Word has length 166 [2022-07-20 00:21:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:21:33,688 INFO L495 AbstractCegarLoop]: Abstraction has 7416 states and 10495 transitions. [2022-07-20 00:21:33,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-20 00:21:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 7416 states and 10495 transitions. [2022-07-20 00:21:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-20 00:21:33,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:21:33,702 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:21:33,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 00:21:33,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:21:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:21:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash 434577180, now seen corresponding path program 1 times [2022-07-20 00:21:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:21:33,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117623248] [2022-07-20 00:21:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:21:33,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:21:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:21:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:21:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:21:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:33,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:21:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:21:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-20 00:21:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-20 00:21:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-20 00:21:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-20 00:21:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 00:21:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-20 00:21:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-20 00:21:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:21:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117623248] [2022-07-20 00:21:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117623248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:21:34,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:21:34,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:21:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695407965] [2022-07-20 00:21:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:21:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:21:34,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:21:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:21:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:21:34,164 INFO L87 Difference]: Start difference. First operand 7416 states and 10495 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-20 00:21:36,443 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 [] [2022-07-20 00:21:38,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:40,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:42,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:48,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:50,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:52,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:55,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:57,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:59,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:01,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:22:02,659 INFO L93 Difference]: Finished difference Result 17899 states and 25805 transitions. [2022-07-20 00:22:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 00:22:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 182 [2022-07-20 00:22:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:22:02,719 INFO L225 Difference]: With dead ends: 17899 [2022-07-20 00:22:02,720 INFO L226 Difference]: Without dead ends: 11170 [2022-07-20 00:22:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:22:02,753 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 2633 mSDsluCounter, 8555 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 834 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 11469 SdHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2022-07-20 00:22:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2764 Valid, 11469 Invalid, 4472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 3628 Invalid, 10 Unknown, 0 Unchecked, 27.9s Time] [2022-07-20 00:22:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11170 states. [2022-07-20 00:22:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11170 to 7416. [2022-07-20 00:22:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7416 states, 5629 states have (on average 1.381240007106058) internal successors, (7775), 5685 states have internal predecessors, (7775), 1346 states have call successors, (1346), 441 states have call predecessors, (1346), 440 states have return successors, (1374), 1340 states have call predecessors, (1374), 1344 states have call successors, (1374) [2022-07-20 00:22:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7416 states to 7416 states and 10495 transitions. [2022-07-20 00:22:03,190 INFO L78 Accepts]: Start accepts. Automaton has 7416 states and 10495 transitions. Word has length 182 [2022-07-20 00:22:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:22:03,190 INFO L495 AbstractCegarLoop]: Abstraction has 7416 states and 10495 transitions. [2022-07-20 00:22:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-20 00:22:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7416 states and 10495 transitions. [2022-07-20 00:22:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-20 00:22:03,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:22:03,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:22:03,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 00:22:03,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:22:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:22:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1553488281, now seen corresponding path program 1 times [2022-07-20 00:22:03,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:22:03,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402353575] [2022-07-20 00:22:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:22:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:22:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:22:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:22:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:22:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:22:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-20 00:22:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-20 00:22:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-20 00:22:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-20 00:22:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:22:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-20 00:22:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-20 00:22:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-20 00:22:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-20 00:22:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-20 00:22:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-20 00:22:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-20 00:22:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:22:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-20 00:22:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:22:03,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402353575] [2022-07-20 00:22:03,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402353575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:22:03,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:22:03,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:22:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470488152] [2022-07-20 00:22:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:22:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:22:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:22:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:22:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:22:03,791 INFO L87 Difference]: Start difference. First operand 7416 states and 10495 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-20 00:22:06,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:09,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:11,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:13,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:16,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:18,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:20,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:22,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:22:22,773 INFO L93 Difference]: Finished difference Result 15124 states and 21693 transitions. [2022-07-20 00:22:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:22:22,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 280 [2022-07-20 00:22:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:22:22,860 INFO L225 Difference]: With dead ends: 15124 [2022-07-20 00:22:22,860 INFO L226 Difference]: Without dead ends: 8395 [2022-07-20 00:22:22,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:22:22,878 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 437 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 271 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 4492 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:22:22,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 4492 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1565 Invalid, 8 Unknown, 0 Unchecked, 18.7s Time] [2022-07-20 00:22:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2022-07-20 00:22:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 7420. [2022-07-20 00:22:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 5633 states have (on average 1.3809692881235576) internal successors, (7779), 5689 states have internal predecessors, (7779), 1346 states have call successors, (1346), 441 states have call predecessors, (1346), 440 states have return successors, (1374), 1340 states have call predecessors, (1374), 1344 states have call successors, (1374) [2022-07-20 00:22:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 10499 transitions. [2022-07-20 00:22:23,220 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 10499 transitions. Word has length 280 [2022-07-20 00:22:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:22:23,221 INFO L495 AbstractCegarLoop]: Abstraction has 7420 states and 10499 transitions. [2022-07-20 00:22:23,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-20 00:22:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 10499 transitions. [2022-07-20 00:22:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-20 00:22:23,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:22:23,238 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:22:23,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 00:22:23,239 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:22:23,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:22:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 930206679, now seen corresponding path program 1 times [2022-07-20 00:22:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:22:23,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622467185] [2022-07-20 00:22:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:22:23,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:22:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:22:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:22:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:22:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:22:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-20 00:22:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-20 00:22:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-20 00:22:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-20 00:22:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:22:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-20 00:22:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-20 00:22:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-20 00:22:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-20 00:22:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-20 00:22:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-20 00:22:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-20 00:22:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:22:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-20 00:22:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:22:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622467185] [2022-07-20 00:22:24,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622467185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:22:24,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:22:24,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 00:22:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196686523] [2022-07-20 00:22:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:22:24,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 00:22:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:22:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 00:22:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-20 00:22:24,111 INFO L87 Difference]: Start difference. First operand 7420 states and 10499 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-20 00:22:28,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:31,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:33,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:35,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:37,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:39,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:22:40,563 INFO L93 Difference]: Finished difference Result 17718 states and 26007 transitions. [2022-07-20 00:22:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 00:22:40,564 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 280 [2022-07-20 00:22:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:22:40,602 INFO L225 Difference]: With dead ends: 17718 [2022-07-20 00:22:40,602 INFO L226 Difference]: Without dead ends: 10985 [2022-07-20 00:22:40,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-07-20 00:22:40,622 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 2932 mSDsluCounter, 6868 mSDsCounter, 0 mSdLazyCounter, 3068 mSolverCounterSat, 1156 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3004 SdHoareTripleChecker+Valid, 8581 SdHoareTripleChecker+Invalid, 4230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 3068 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-07-20 00:22:40,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3004 Valid, 8581 Invalid, 4230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1156 Valid, 3068 Invalid, 6 Unknown, 0 Unchecked, 15.9s Time] [2022-07-20 00:22:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2022-07-20 00:22:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 7428. [2022-07-20 00:22:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 5641 states have (on average 1.380429001950009) internal successors, (7787), 5697 states have internal predecessors, (7787), 1346 states have call successors, (1346), 441 states have call predecessors, (1346), 440 states have return successors, (1374), 1340 states have call predecessors, (1374), 1344 states have call successors, (1374) [2022-07-20 00:22:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10507 transitions. [2022-07-20 00:22:41,095 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10507 transitions. Word has length 280 [2022-07-20 00:22:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:22:41,096 INFO L495 AbstractCegarLoop]: Abstraction has 7428 states and 10507 transitions. [2022-07-20 00:22:41,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-20 00:22:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10507 transitions. [2022-07-20 00:22:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-20 00:22:41,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:22:41,111 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:22:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 00:22:41,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:22:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:22:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1986937881, now seen corresponding path program 1 times [2022-07-20 00:22:41,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:22:41,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891955259] [2022-07-20 00:22:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:22:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:22:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 00:22:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-20 00:22:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-20 00:22:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-20 00:22:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-20 00:22:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-20 00:22:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-20 00:22:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-20 00:22:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:22:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-20 00:22:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-20 00:22:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-20 00:22:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-20 00:22:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-20 00:22:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-20 00:22:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-20 00:22:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-20 00:22:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-20 00:22:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:22:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891955259] [2022-07-20 00:22:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891955259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:22:41,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:22:41,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:22:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828670434] [2022-07-20 00:22:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:22:41,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:22:41,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:22:41,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:22:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:22:41,694 INFO L87 Difference]: Start difference. First operand 7428 states and 10507 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)