./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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-32_7a-drivers--md--dm-raid.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:33:34,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:33:34,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:33:34,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:33:34,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:33:34,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:33:34,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:33:34,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:33:34,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:33:34,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:33:34,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:33:34,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:33:34,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:33:34,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:33:34,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:33:34,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:33:34,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:33:34,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:33:34,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:33:34,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:33:34,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:33:34,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:33:34,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:33:34,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:33:34,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:33:34,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:33:34,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:33:34,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:33:34,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:33:34,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:33:34,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:33:34,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:33:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:33:34,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:33:34,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:33:34,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:33:34,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:33:34,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:33:34,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:33:34,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:33:34,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:33:34,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:33:35,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:33:35,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:33:35,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:33:35,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:33:35,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:33:35,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:33:35,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:33:35,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:33:35,040 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:33:35,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:33:35,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:33:35,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:33:35,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:33:35,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:33:35,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:33:35,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:33:35,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:33:35,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:33:35,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:33:35,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:33:35,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:33:35,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:33:35,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:33:35,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:33:35,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:33:35,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:33:35,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:33:35,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:33:35,044 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:33:35,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:33:35,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:33:35,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-12-21 16:33:35,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:33:35,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:33:35,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:33:35,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:33:35,283 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:33:35,284 INFO L432 ainManager$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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-21 16:33:35,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d6cf308/4eb1c2b613c34e7d8147ba4a2c4f2171/FLAG6b71d88fb [2021-12-21 16:33:35,878 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:33:35,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-21 16:33:35,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d6cf308/4eb1c2b613c34e7d8147ba4a2c4f2171/FLAG6b71d88fb [2021-12-21 16:33:36,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d6cf308/4eb1c2b613c34e7d8147ba4a2c4f2171 [2021-12-21 16:33:36,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:33:36,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:33:36,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:33:36,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:33:36,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:33:36,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:33:36" (1/1) ... [2021-12-21 16:33:36,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3148af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:36, skipping insertion in model container [2021-12-21 16:33:36,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:33:36" (1/1) ... [2021-12-21 16:33:36,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:33:36,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:33:37,167 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-21 16:33:37,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:33:37,269 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:33:37,509 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-12-21 16:33:37,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:33:37,565 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:33:37,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37 WrapperNode [2021-12-21 16:33:37,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:33:37,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:33:37,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:33:37,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:33:37,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,754 INFO L137 Inliner]: procedures = 221, calls = 1591, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 4430 [2021-12-21 16:33:37,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:33:37,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:33:37,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:33:37,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:33:37,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:33:37,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:33:37,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:33:37,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:33:37,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (1/1) ... [2021-12-21 16:33:37,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:33:37,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:33:37,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:33:38,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:33:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2021-12-21 16:33:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2021-12-21 16:33:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-12-21 16:33:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-12-21 16:33:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:33:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:33:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:33:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:33:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-21 16:33:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-21 16:33:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2021-12-21 16:33:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2021-12-21 16:33:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:33:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:33:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2021-12-21 16:33:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2021-12-21 16:33:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2021-12-21 16:33:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2021-12-21 16:33:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:33:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:33:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 16:33:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 16:33:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2021-12-21 16:33:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2021-12-21 16:33:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:33:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:33:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:33:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:33:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2021-12-21 16:33:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2021-12-21 16:33:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-21 16:33:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-21 16:33:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-21 16:33:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-21 16:33:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2021-12-21 16:33:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2021-12-21 16:33:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2021-12-21 16:33:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2021-12-21 16:33:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:33:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:33:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:33:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:33:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2021-12-21 16:33:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2021-12-21 16:33:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 16:33:38,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 16:33:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2021-12-21 16:33:38,026 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2021-12-21 16:33:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:33:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:33:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2021-12-21 16:33:38,027 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2021-12-21 16:33:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2021-12-21 16:33:38,027 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2021-12-21 16:33:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-12-21 16:33:38,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2021-12-21 16:33:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:33:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2021-12-21 16:33:38,029 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2021-12-21 16:33:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 16:33:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 16:33:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2021-12-21 16:33:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2021-12-21 16:33:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:33:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-12-21 16:33:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-12-21 16:33:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2021-12-21 16:33:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2021-12-21 16:33:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:33:38,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:33:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:33:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2021-12-21 16:33:38,031 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2021-12-21 16:33:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:33:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:33:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2021-12-21 16:33:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2021-12-21 16:33:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:33:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:33:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-12-21 16:33:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-12-21 16:33:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2021-12-21 16:33:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2021-12-21 16:33:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2021-12-21 16:33:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2021-12-21 16:33:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-21 16:33:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-21 16:33:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:33:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:33:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-21 16:33:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-21 16:33:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:33:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2021-12-21 16:33:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2021-12-21 16:33:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2021-12-21 16:33:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2021-12-21 16:33:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:33:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:33:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:33:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:33:38,480 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:33:38,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:33:38,878 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:33:40,634 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:33:40,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:33:40,644 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:33:40,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:33:40 BoogieIcfgContainer [2021-12-21 16:33:40,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:33:40,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:33:40,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:33:40,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:33:40,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:33:36" (1/3) ... [2021-12-21 16:33:40,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:33:40, skipping insertion in model container [2021-12-21 16:33:40,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:33:37" (2/3) ... [2021-12-21 16:33:40,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:33:40, skipping insertion in model container [2021-12-21 16:33:40,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:33:40" (3/3) ... [2021-12-21 16:33:40,652 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-12-21 16:33:40,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:33:40,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:33:40,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:33:40,690 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:33:40,690 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:33:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 1134 states, 873 states have (on average 1.4421534936998854) internal successors, (1259), 894 states have internal predecessors, (1259), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) [2021-12-21 16:33:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-21 16:33:40,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:33:40,761 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:33:40,762 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:33:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:33:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1014089832, now seen corresponding path program 1 times [2021-12-21 16:33:40,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:33:40,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921030231] [2021-12-21 16:33:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:33:40,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:33:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:33:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:33:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:33:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:33:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:33:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:33:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:33:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:33:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:33:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:33:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:33:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:33:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:33:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:33:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:33:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-21 16:33:41,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:33:41,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921030231] [2021-12-21 16:33:41,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921030231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:33:41,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:33:41,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:33:41,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312722376] [2021-12-21 16:33:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:33:41,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:33:41,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:33:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:33:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:33:41,368 INFO L87 Difference]: Start difference. First operand has 1134 states, 873 states have (on average 1.4421534936998854) internal successors, (1259), 894 states have internal predecessors, (1259), 216 states have call successors, (216), 44 states have call predecessors, (216), 43 states have return successors, (212), 208 states have call predecessors, (212), 212 states have call successors, (212) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:33:45,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:33:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:33:45,823 INFO L93 Difference]: Finished difference Result 2290 states and 3434 transitions. [2021-12-21 16:33:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:33:45,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 221 [2021-12-21 16:33:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:33:45,851 INFO L225 Difference]: With dead ends: 2290 [2021-12-21 16:33:45,851 INFO L226 Difference]: Without dead ends: 1149 [2021-12-21 16:33:45,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:33:45,862 INFO L933 BasicCegarLoop]: 1542 mSDtfsCounter, 862 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 546 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:33:45,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 2801 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 904 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-12-21 16:33:45,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2021-12-21 16:33:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1122. [2021-12-21 16:33:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 867 states have (on average 1.4359861591695502) internal successors, (1245), 882 states have internal predecessors, (1245), 212 states have call successors, (212), 43 states have call predecessors, (212), 42 states have return successors, (207), 203 states have call predecessors, (207), 207 states have call successors, (207) [2021-12-21 16:33:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1664 transitions. [2021-12-21 16:33:45,962 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1664 transitions. Word has length 221 [2021-12-21 16:33:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:33:45,962 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1664 transitions. [2021-12-21 16:33:45,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:33:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1664 transitions. [2021-12-21 16:33:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-21 16:33:45,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:33:45,972 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:33:45,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:33:45,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:33:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:33:45,975 INFO L85 PathProgramCache]: Analyzing trace with hash -814978680, now seen corresponding path program 1 times [2021-12-21 16:33:45,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:33:45,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630913066] [2021-12-21 16:33:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:33:45,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:33:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:33:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:33:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:33:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:33:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:33:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:33:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:33:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:33:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:33:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:33:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:33:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:33:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:33:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:33:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:33:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-21 16:33:46,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:33:46,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630913066] [2021-12-21 16:33:46,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630913066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:33:46,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:33:46,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:33:46,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566184626] [2021-12-21 16:33:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:33:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:33:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:33:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:33:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:33:46,427 INFO L87 Difference]: Start difference. First operand 1122 states and 1664 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-21 16:33:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:33:50,609 INFO L93 Difference]: Finished difference Result 3312 states and 4942 transitions. [2021-12-21 16:33:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:33:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 221 [2021-12-21 16:33:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:33:50,628 INFO L225 Difference]: With dead ends: 3312 [2021-12-21 16:33:50,628 INFO L226 Difference]: Without dead ends: 2229 [2021-12-21 16:33:50,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:33:50,632 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 3915 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 1663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4044 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1663 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:33:50,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4044 Valid, 3478 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1663 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-21 16:33:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-12-21 16:33:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2175. [2021-12-21 16:33:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1693 states have (on average 1.442409923213231) internal successors, (2442), 1719 states have internal predecessors, (2442), 400 states have call successors, (400), 82 states have call predecessors, (400), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-21 16:33:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3237 transitions. [2021-12-21 16:33:50,709 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3237 transitions. Word has length 221 [2021-12-21 16:33:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:33:50,712 INFO L470 AbstractCegarLoop]: Abstraction has 2175 states and 3237 transitions. [2021-12-21 16:33:50,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-21 16:33:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3237 transitions. [2021-12-21 16:33:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-21 16:33:50,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:33:50,715 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:33:50,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:33:50,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:33:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:33:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 993586167, now seen corresponding path program 1 times [2021-12-21 16:33:50,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:33:50,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129679450] [2021-12-21 16:33:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:33:50,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:33:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:33:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:33:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:33:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:33:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:33:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:33:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:33:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:33:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:33:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:33:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:33:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:33:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:33:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:33:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:33:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-21 16:33:51,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:33:51,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129679450] [2021-12-21 16:33:51,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129679450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:33:51,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:33:51,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:33:51,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678421165] [2021-12-21 16:33:51,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:33:51,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:33:51,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:33:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:33:51,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:33:51,125 INFO L87 Difference]: Start difference. First operand 2175 states and 3237 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:33:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:33:54,171 INFO L93 Difference]: Finished difference Result 2228 states and 3328 transitions. [2021-12-21 16:33:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:33:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 224 [2021-12-21 16:33:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:33:54,182 INFO L225 Difference]: With dead ends: 2228 [2021-12-21 16:33:54,182 INFO L226 Difference]: Without dead ends: 2225 [2021-12-21 16:33:54,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:33:54,201 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 2690 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:33:54,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 2161 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-21 16:33:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-12-21 16:33:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2174. [2021-12-21 16:33:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1693 states have (on average 1.4418192557590077) internal successors, (2441), 1718 states have internal predecessors, (2441), 399 states have call successors, (399), 82 states have call predecessors, (399), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-21 16:33:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3235 transitions. [2021-12-21 16:33:54,275 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3235 transitions. Word has length 224 [2021-12-21 16:33:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:33:54,276 INFO L470 AbstractCegarLoop]: Abstraction has 2174 states and 3235 transitions. [2021-12-21 16:33:54,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:33:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3235 transitions. [2021-12-21 16:33:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-21 16:33:54,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:33:54,281 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:33:54,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:33:54,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:33:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:33:54,281 INFO L85 PathProgramCache]: Analyzing trace with hash 736097576, now seen corresponding path program 1 times [2021-12-21 16:33:54,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:33:54,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176131719] [2021-12-21 16:33:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:33:54,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:33:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:33:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:33:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:33:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:33:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:33:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:33:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:33:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:33:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:33:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:33:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:33:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:33:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:33:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:33:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:33:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-21 16:33:54,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:33:54,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176131719] [2021-12-21 16:33:54,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176131719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:33:54,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:33:54,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:33:54,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607754788] [2021-12-21 16:33:54,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:33:54,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:33:54,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:33:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:33:54,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:33:54,582 INFO L87 Difference]: Start difference. First operand 2174 states and 3235 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:33:56,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:34:01,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:34:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:34:01,585 INFO L93 Difference]: Finished difference Result 2227 states and 3326 transitions. [2021-12-21 16:34:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:34:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 225 [2021-12-21 16:34:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:34:01,599 INFO L225 Difference]: With dead ends: 2227 [2021-12-21 16:34:01,599 INFO L226 Difference]: Without dead ends: 2224 [2021-12-21 16:34:01,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:34:01,602 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 2254 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 646 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:34:01,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2380 Valid, 3316 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1333 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-12-21 16:34:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-12-21 16:34:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2173. [2021-12-21 16:34:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 1693 states have (on average 1.4412285883047844) internal successors, (2440), 1717 states have internal predecessors, (2440), 398 states have call successors, (398), 82 states have call predecessors, (398), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-21 16:34:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3233 transitions. [2021-12-21 16:34:01,661 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3233 transitions. Word has length 225 [2021-12-21 16:34:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:34:01,662 INFO L470 AbstractCegarLoop]: Abstraction has 2173 states and 3233 transitions. [2021-12-21 16:34:01,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:34:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3233 transitions. [2021-12-21 16:34:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-21 16:34:01,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:34:01,664 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:34:01,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:34:01,665 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:34:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:34:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1343890714, now seen corresponding path program 1 times [2021-12-21 16:34:01,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:34:01,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600495889] [2021-12-21 16:34:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:34:01,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:34:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:34:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:34:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:34:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:34:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:34:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:34:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:34:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:34:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:34:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:34:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:34:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:34:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:34:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:34:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:34:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-21 16:34:01,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:34:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600495889] [2021-12-21 16:34:01,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600495889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:34:01,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:34:01,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:34:01,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764852625] [2021-12-21 16:34:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:34:01,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:34:01,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:34:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:34:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:34:01,956 INFO L87 Difference]: Start difference. First operand 2173 states and 3233 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:34:06,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:34:07,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:34:07,149 INFO L93 Difference]: Finished difference Result 2226 states and 3324 transitions. [2021-12-21 16:34:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:34:07,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 226 [2021-12-21 16:34:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:34:07,157 INFO L225 Difference]: With dead ends: 2226 [2021-12-21 16:34:07,157 INFO L226 Difference]: Without dead ends: 2223 [2021-12-21 16:34:07,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:34:07,159 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 2251 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 652 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:34:07,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2377 Valid, 2748 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 909 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-12-21 16:34:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2021-12-21 16:34:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2172. [2021-12-21 16:34:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1693 states have (on average 1.440637920850561) internal successors, (2439), 1716 states have internal predecessors, (2439), 397 states have call successors, (397), 82 states have call predecessors, (397), 81 states have return successors, (395), 387 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-21 16:34:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3231 transitions. [2021-12-21 16:34:07,242 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3231 transitions. Word has length 226 [2021-12-21 16:34:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:34:07,242 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 3231 transitions. [2021-12-21 16:34:07,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:34:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3231 transitions. [2021-12-21 16:34:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-21 16:34:07,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:34:07,245 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:34:07,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:34:07,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:34:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:34:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1289353621, now seen corresponding path program 1 times [2021-12-21 16:34:07,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:34:07,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48031515] [2021-12-21 16:34:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:34:07,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:34:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:34:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:34:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:34:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:34:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:34:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:34:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:34:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:34:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:34:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:34:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:34:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:34:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:34:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:34:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:34:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-21 16:34:07,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:34:07,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48031515] [2021-12-21 16:34:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48031515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:34:07,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:34:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:34:07,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835668940] [2021-12-21 16:34:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:34:07,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:34:07,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:34:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:34:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:34:07,553 INFO L87 Difference]: Start difference. First operand 2172 states and 3231 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:34:15,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:34:15,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:34:15,994 INFO L93 Difference]: Finished difference Result 4370 states and 6538 transitions. [2021-12-21 16:34:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:34:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 227 [2021-12-21 16:34:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:34:16,024 INFO L225 Difference]: With dead ends: 4370 [2021-12-21 16:34:16,024 INFO L226 Difference]: Without dead ends: 4359 [2021-12-21 16:34:16,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:34:16,028 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 3076 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 1135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 4603 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:34:16,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 4603 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 2268 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-12-21 16:34:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2021-12-21 16:34:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 4260. [2021-12-21 16:34:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 3332 states have (on average 1.445078031212485) internal successors, (4815), 3375 states have internal predecessors, (4815), 770 states have call successors, (770), 160 states have call predecessors, (770), 157 states have return successors, (768), 750 states have call predecessors, (768), 768 states have call successors, (768) [2021-12-21 16:34:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6353 transitions. [2021-12-21 16:34:16,157 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6353 transitions. Word has length 227 [2021-12-21 16:34:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:34:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 4260 states and 6353 transitions. [2021-12-21 16:34:16,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-21 16:34:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6353 transitions. [2021-12-21 16:34:16,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-12-21 16:34:16,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:34:16,170 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:34:16,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:34:16,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:34:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:34:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash -581469749, now seen corresponding path program 1 times [2021-12-21 16:34:16,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:34:16,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136410118] [2021-12-21 16:34:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:34:16,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:34:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:34:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:34:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:34:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:34:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:34:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:34:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:34:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:34:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:34:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:34:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:34:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:34:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:34:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:34:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:34:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-21 16:34:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-21 16:34:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-21 16:34:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-21 16:34:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:34:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-21 16:34:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-21 16:34:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-21 16:34:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-21 16:34:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-21 16:34:16,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:34:16,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136410118] [2021-12-21 16:34:16,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136410118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:34:16,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:34:16,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:34:16,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892576862] [2021-12-21 16:34:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:34:16,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:34:16,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:34:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:34:16,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:34:16,546 INFO L87 Difference]: Start difference. First operand 4260 states and 6353 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 16:34:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:34:22,267 INFO L93 Difference]: Finished difference Result 8771 states and 13091 transitions. [2021-12-21 16:34:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:34:22,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 333 [2021-12-21 16:34:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:34:22,287 INFO L225 Difference]: With dead ends: 8771 [2021-12-21 16:34:22,287 INFO L226 Difference]: Without dead ends: 4550 [2021-12-21 16:34:22,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-21 16:34:22,302 INFO L933 BasicCegarLoop]: 1509 mSDtfsCounter, 1536 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:34:22,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 4812 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-21 16:34:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-12-21 16:34:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4438. [2021-12-21 16:34:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 3484 states have (on average 1.444316877152698) internal successors, (5032), 3527 states have internal predecessors, (5032), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-21 16:34:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 6606 transitions. [2021-12-21 16:34:22,428 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 6606 transitions. Word has length 333 [2021-12-21 16:34:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:34:22,429 INFO L470 AbstractCegarLoop]: Abstraction has 4438 states and 6606 transitions. [2021-12-21 16:34:22,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 16:34:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 6606 transitions. [2021-12-21 16:34:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-21 16:34:22,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:34:22,441 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:34:22,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:34:22,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:34:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:34:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1932336199, now seen corresponding path program 1 times [2021-12-21 16:34:22,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:34:22,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492707289] [2021-12-21 16:34:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:34:22,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:34:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:34:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:34:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:34:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:34:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:34:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:34:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:34:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:34:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:34:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:34:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:34:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:34:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:34:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:34:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:34:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 16:34:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 16:34:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:34:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-21 16:34:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-21 16:34:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-21 16:34:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-21 16:34:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-21 16:34:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-21 16:34:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-21 16:34:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-21 16:34:22,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:34:22,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492707289] [2021-12-21 16:34:22,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492707289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:34:22,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:34:22,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:34:22,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670479835] [2021-12-21 16:34:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:34:22,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:34:22,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:34:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:34:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:34:22,846 INFO L87 Difference]: Start difference. First operand 4438 states and 6606 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-21 16:34:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:34:26,536 INFO L93 Difference]: Finished difference Result 8925 states and 13322 transitions. [2021-12-21 16:34:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:34:26,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 358 [2021-12-21 16:34:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:34:26,555 INFO L225 Difference]: With dead ends: 8925 [2021-12-21 16:34:26,555 INFO L226 Difference]: Without dead ends: 4544 [2021-12-21 16:34:26,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:34:26,570 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 1820 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:34:26,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 3825 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-21 16:34:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2021-12-21 16:34:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4442. [2021-12-21 16:34:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 3488 states have (on average 1.4438073394495412) internal successors, (5036), 3531 states have internal predecessors, (5036), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-21 16:34:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 6610 transitions. [2021-12-21 16:34:26,697 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 6610 transitions. Word has length 358 [2021-12-21 16:34:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:34:26,698 INFO L470 AbstractCegarLoop]: Abstraction has 4442 states and 6610 transitions. [2021-12-21 16:34:26,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-21 16:34:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 6610 transitions. [2021-12-21 16:34:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-21 16:34:26,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:34:26,708 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:34:26,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:34:26,708 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:34:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:34:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1305899895, now seen corresponding path program 1 times [2021-12-21 16:34:26,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:34:26,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076406391] [2021-12-21 16:34:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:34:26,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:34:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:34:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:34:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:34:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:34:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:34:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:34:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:34:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:34:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:34:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:34:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:34:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:34:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:34:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:34:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:34:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 16:34:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 16:34:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:34:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-21 16:34:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-21 16:34:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-21 16:34:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-21 16:34:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-21 16:34:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-21 16:34:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-21 16:34:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-21 16:34:27,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:34:27,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076406391] [2021-12-21 16:34:27,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076406391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:34:27,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:34:27,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:34:27,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714647841] [2021-12-21 16:34:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:34:27,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:34:27,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:34:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:34:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:34:27,114 INFO L87 Difference]: Start difference. First operand 4442 states and 6610 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-21 16:34:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:34:32,498 INFO L93 Difference]: Finished difference Result 11501 states and 17584 transitions. [2021-12-21 16:34:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:34:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 358 [2021-12-21 16:34:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:34:32,535 INFO L225 Difference]: With dead ends: 11501 [2021-12-21 16:34:32,535 INFO L226 Difference]: Without dead ends: 7116 [2021-12-21 16:34:32,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:34:32,553 INFO L933 BasicCegarLoop]: 2057 mSDtfsCounter, 2792 mSDsluCounter, 4784 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 6841 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:34:32,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 6841 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-21 16:34:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2021-12-21 16:34:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 4450. [2021-12-21 16:34:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 3496 states have (on average 1.44279176201373) internal successors, (5044), 3539 states have internal predecessors, (5044), 788 states have call successors, (788), 168 states have call predecessors, (788), 165 states have return successors, (786), 768 states have call predecessors, (786), 786 states have call successors, (786) [2021-12-21 16:34:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 6618 transitions. [2021-12-21 16:34:32,829 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 6618 transitions. Word has length 358 [2021-12-21 16:34:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:34:32,829 INFO L470 AbstractCegarLoop]: Abstraction has 4450 states and 6618 transitions. [2021-12-21 16:34:32,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-21 16:34:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 6618 transitions. [2021-12-21 16:34:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-12-21 16:34:32,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:34:32,839 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:34:32,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:34:32,839 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:34:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:34:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -893982665, now seen corresponding path program 1 times [2021-12-21 16:34:32,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:34:32,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164367155] [2021-12-21 16:34:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:34:32,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:34:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:34:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:34:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:34:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:34:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:34:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:34:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:34:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:34:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:34:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:34:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:34:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 16:34:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:34:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:34:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:34:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 16:34:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:34:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 16:34:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 16:34:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-21 16:34:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-21 16:34:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:34:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-21 16:34:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-21 16:34:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-21 16:34:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-21 16:34:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-21 16:34:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:34:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-21 16:34:33,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:34:33,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164367155] [2021-12-21 16:34:33,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164367155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:34:33,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:34:33,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:34:33,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105304291] [2021-12-21 16:34:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:34:33,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:34:33,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:34:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:34:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:34:33,145 INFO L87 Difference]: Start difference. First operand 4450 states and 6618 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-21 16:34:35,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []