./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.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 d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:39:53,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:39:53,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:39:53,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:39:53,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:39:53,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:39:53,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:39:53,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:39:53,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:39:53,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:39:53,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:39:53,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:39:53,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:39:53,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:39:53,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:39:53,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:39:53,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:39:53,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:39:53,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:39:53,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:39:53,318 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:39:53,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:39:53,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:39:53,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:39:53,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:39:53,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:39:53,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:39:53,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:39:53,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:39:53,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:39:53,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:39:53,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:39:53,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:39:53,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:39:53,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:39:53,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:39:53,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:39:53,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:39:53,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:39:53,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:39:53,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:39:53,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:39:53,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:39:53,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:39:53,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:39:53,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:39:53,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:39:53,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:39:53,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:39:53,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:39:53,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:39:53,385 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:39:53,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:39:53,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:39:53,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:39:53,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:39:53,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:39:53,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:39:53,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:39:53,387 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:39:53,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:39:53,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:39:53,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:39:53,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:39:53,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:39:53,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:39:53,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:39:53,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:39:53,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:39:53,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:39:53,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:39:53,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:39:53,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:39:53,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2022-07-19 23:39:53,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:39:53,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:39:53,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:39:53,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:39:53,711 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:39:53,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2022-07-19 23:39:53,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a34a07e9/ab010f31a726488e80481e33bf9955bb/FLAGfc9175ed6 [2022-07-19 23:39:54,722 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:39:54,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2022-07-19 23:39:54,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a34a07e9/ab010f31a726488e80481e33bf9955bb/FLAGfc9175ed6 [2022-07-19 23:39:55,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a34a07e9/ab010f31a726488e80481e33bf9955bb [2022-07-19 23:39:55,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:39:55,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:39:55,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:39:55,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:39:55,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:39:55,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:55" (1/1) ... [2022-07-19 23:39:55,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42171d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:55, skipping insertion in model container [2022-07-19 23:39:55,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:55" (1/1) ... [2022-07-19 23:39:55,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:39:55,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:39:56,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2022-07-19 23:39:57,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:39:57,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:39:57,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2022-07-19 23:39:57,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:39:58,095 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:39:58,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58 WrapperNode [2022-07-19 23:39:58,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:39:58,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:39:58,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:39:58,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:39:58,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,433 INFO L137 Inliner]: procedures = 239, calls = 2983, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 5266 [2022-07-19 23:39:58,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:39:58,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:39:58,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:39:58,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:39:58,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:39:58,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:39:58,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:39:58,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:39:58,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (1/1) ... [2022-07-19 23:39:58,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:39:58,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:39:58,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:39:58,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:39:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2022-07-19 23:39:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2022-07-19 23:39:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2022-07-19 23:39:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2022-07-19 23:39:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2022-07-19 23:39:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2022-07-19 23:39:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-19 23:39:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-19 23:39:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:39:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:39:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:39:58,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:39:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-07-19 23:39:58,841 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-07-19 23:39:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2022-07-19 23:39:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2022-07-19 23:39:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2022-07-19 23:39:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2022-07-19 23:39:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2022-07-19 23:39:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2022-07-19 23:39:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:39:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:39:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-19 23:39:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-19 23:39:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2022-07-19 23:39:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2022-07-19 23:39:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2022-07-19 23:39:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2022-07-19 23:39:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:39:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:39:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-19 23:39:58,844 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-19 23:39:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:39:58,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:39:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:39:58,844 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:39:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:39:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:39:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:39:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-19 23:39:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-19 23:39:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:39:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-19 23:39:58,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-19 23:39:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2022-07-19 23:39:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2022-07-19 23:39:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-19 23:39:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2022-07-19 23:39:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2022-07-19 23:39:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2022-07-19 23:39:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2022-07-19 23:39:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:39:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:39:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2022-07-19 23:39:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2022-07-19 23:39:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2022-07-19 23:39:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2022-07-19 23:39:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2022-07-19 23:39:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2022-07-19 23:39:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-07-19 23:39:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-07-19 23:39:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-19 23:39:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-19 23:39:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:39:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:39:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2022-07-19 23:39:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2022-07-19 23:39:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-19 23:39:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-19 23:39:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-19 23:39:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-19 23:39:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-19 23:39:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-19 23:39:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2022-07-19 23:39:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2022-07-19 23:39:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-19 23:39:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-19 23:39:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:39:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:39:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:39:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:39:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2022-07-19 23:39:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2022-07-19 23:39:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2022-07-19 23:39:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2022-07-19 23:39:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2022-07-19 23:39:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2022-07-19 23:39:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:39:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2022-07-19 23:39:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2022-07-19 23:39:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2022-07-19 23:39:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2022-07-19 23:39:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-19 23:39:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-19 23:39:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:39:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:39:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-19 23:39:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-19 23:39:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-19 23:39:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-19 23:39:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-19 23:39:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-19 23:39:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-19 23:39:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-19 23:39:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2022-07-19 23:39:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2022-07-19 23:39:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2022-07-19 23:39:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2022-07-19 23:39:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-07-19 23:39:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-07-19 23:39:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:39:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:39:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:39:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:39:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:39:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2022-07-19 23:39:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2022-07-19 23:39:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-07-19 23:39:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-07-19 23:39:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:39:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2022-07-19 23:39:58,865 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2022-07-19 23:39:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2022-07-19 23:39:58,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2022-07-19 23:39:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-19 23:39:58,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-19 23:39:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:39:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-07-19 23:39:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-07-19 23:39:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:39:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-19 23:39:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-19 23:39:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-19 23:39:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-19 23:39:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-19 23:39:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-19 23:39:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-19 23:39:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-19 23:39:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2022-07-19 23:39:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2022-07-19 23:39:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:39:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:39:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2022-07-19 23:39:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2022-07-19 23:39:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-07-19 23:39:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-07-19 23:39:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:39:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2022-07-19 23:39:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2022-07-19 23:39:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:39:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:39:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-07-19 23:39:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-07-19 23:39:59,645 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:39:59,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:40:00,063 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:40:08,628 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:40:08,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:40:08,649 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 23:40:08,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:08 BoogieIcfgContainer [2022-07-19 23:40:08,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:40:08,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:40:08,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:40:08,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:40:08,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:39:55" (1/3) ... [2022-07-19 23:40:08,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1160ada6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:08, skipping insertion in model container [2022-07-19 23:40:08,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:58" (2/3) ... [2022-07-19 23:40:08,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1160ada6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:08, skipping insertion in model container [2022-07-19 23:40:08,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:08" (3/3) ... [2022-07-19 23:40:08,665 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2022-07-19 23:40:08,680 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:40:08,680 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:40:08,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:40:08,797 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f092c9b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12c6a46a [2022-07-19 23:40:08,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:40:08,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 1344 states, 979 states have (on average 1.390194075587334) internal successors, (1361), 1003 states have internal predecessors, (1361), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) [2022-07-19 23:40:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 23:40:08,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:40:08,837 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:40:08,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:40:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:40:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash -576681096, now seen corresponding path program 1 times [2022-07-19 23:40:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:40:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894823720] [2022-07-19 23:40:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:40:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:40:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:40:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:40:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:40:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:40:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:40:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:40:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:40:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:40:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:40:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:40:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 23:40:09,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:40:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894823720] [2022-07-19 23:40:09,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894823720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:40:09,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:40:09,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:40:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402701722] [2022-07-19 23:40:09,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:40:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:40:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:40:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:40:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:40:09,992 INFO L87 Difference]: Start difference. First operand has 1344 states, 979 states have (on average 1.390194075587334) internal successors, (1361), 1003 states have internal predecessors, (1361), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 23:40:18,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:20,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:22,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:24,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:26,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:28,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:30,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:32,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:40:34,254 INFO L93 Difference]: Finished difference Result 4281 states and 6544 transitions. [2022-07-19 23:40:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:40:34,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2022-07-19 23:40:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:40:34,302 INFO L225 Difference]: With dead ends: 4281 [2022-07-19 23:40:34,302 INFO L226 Difference]: Without dead ends: 2924 [2022-07-19 23:40:34,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:40:34,324 INFO L413 NwaCegarLoop]: 2184 mSDtfsCounter, 2910 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 1540 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 3980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1540 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:40:34,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3161 Valid, 5443 Invalid, 3980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1540 Valid, 2432 Invalid, 8 Unknown, 0 Unchecked, 23.7s Time] [2022-07-19 23:40:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2022-07-19 23:40:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2610. [2022-07-19 23:40:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 1910 states have (on average 1.382198952879581) internal successors, (2640), 1944 states have internal predecessors, (2640), 567 states have call successors, (567), 133 states have call predecessors, (567), 132 states have return successors, (566), 564 states have call predecessors, (566), 566 states have call successors, (566) [2022-07-19 23:40:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3773 transitions. [2022-07-19 23:40:34,610 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3773 transitions. Word has length 80 [2022-07-19 23:40:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:40:34,611 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3773 transitions. [2022-07-19 23:40:34,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 23:40:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3773 transitions. [2022-07-19 23:40:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 23:40:34,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:40:34,625 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:40:34,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:40:34,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:40:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:40:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2085975567, now seen corresponding path program 1 times [2022-07-19 23:40:34,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:40:34,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850297503] [2022-07-19 23:40:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:40:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:40:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:40:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:40:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:40:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:40:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:40:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:40:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:40:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:40:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:40:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:40:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:40:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:40:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:40:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-19 23:40:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:40:35,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850297503] [2022-07-19 23:40:35,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850297503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:40:35,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:40:35,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:40:35,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997887678] [2022-07-19 23:40:35,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:40:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:40:35,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:40:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:40:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:40:35,307 INFO L87 Difference]: Start difference. First operand 2610 states and 3773 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:40:45,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:47,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:49,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:51,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:54,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:56,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:40:58,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:00,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:41:01,727 INFO L93 Difference]: Finished difference Result 8399 states and 12489 transitions. [2022-07-19 23:41:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:41:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2022-07-19 23:41:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:41:01,758 INFO L225 Difference]: With dead ends: 8399 [2022-07-19 23:41:01,758 INFO L226 Difference]: Without dead ends: 5803 [2022-07-19 23:41:01,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:41:01,768 INFO L413 NwaCegarLoop]: 2116 mSDtfsCounter, 3026 mSDsluCounter, 6179 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 1564 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 5744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1564 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:41:01,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 8295 Invalid, 5744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1564 Valid, 4172 Invalid, 8 Unknown, 0 Unchecked, 25.8s Time] [2022-07-19 23:41:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2022-07-19 23:41:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5213. [2022-07-19 23:41:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 3819 states have (on average 1.3833464257659074) internal successors, (5283), 3889 states have internal predecessors, (5283), 1123 states have call successors, (1123), 265 states have call predecessors, (1123), 270 states have return successors, (1143), 1122 states have call predecessors, (1143), 1122 states have call successors, (1143) [2022-07-19 23:41:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7549 transitions. [2022-07-19 23:41:02,008 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7549 transitions. Word has length 96 [2022-07-19 23:41:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:41:02,009 INFO L495 AbstractCegarLoop]: Abstraction has 5213 states and 7549 transitions. [2022-07-19 23:41:02,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:41:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7549 transitions. [2022-07-19 23:41:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 23:41:02,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:41:02,019 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:41:02,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:41:02,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:41:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:41:02,020 INFO L85 PathProgramCache]: Analyzing trace with hash -178635968, now seen corresponding path program 1 times [2022-07-19 23:41:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:41:02,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612215064] [2022-07-19 23:41:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:41:02,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:41:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:41:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:41:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:41:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:41:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:41:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:41:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:41:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:41:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:41:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:41:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 23:41:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:41:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:41:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:41:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 23:41:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 23:41:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:41:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-19 23:41:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:41:02,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612215064] [2022-07-19 23:41:02,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612215064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:41:02,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:41:02,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:41:02,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415435490] [2022-07-19 23:41:02,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:41:02,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:41:02,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:41:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:41:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:41:02,615 INFO L87 Difference]: Start difference. First operand 5213 states and 7549 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:41:08,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:10,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:12,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:14,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:41:16,166 INFO L93 Difference]: Finished difference Result 13361 states and 19664 transitions. [2022-07-19 23:41:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:41:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-19 23:41:16,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:41:16,223 INFO L225 Difference]: With dead ends: 13361 [2022-07-19 23:41:16,223 INFO L226 Difference]: Without dead ends: 8172 [2022-07-19 23:41:16,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:41:16,246 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1917 mSDsluCounter, 3143 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 1407 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1407 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:41:16,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 5144 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1407 Valid, 2150 Invalid, 4 Unknown, 0 Unchecked, 13.2s Time] [2022-07-19 23:41:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-07-19 23:41:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 7472. [2022-07-19 23:41:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7472 states, 5511 states have (on average 1.3796044275086192) internal successors, (7603), 5597 states have internal predecessors, (7603), 1550 states have call successors, (1550), 397 states have call predecessors, (1550), 410 states have return successors, (1586), 1549 states have call predecessors, (1586), 1549 states have call successors, (1586) [2022-07-19 23:41:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 10739 transitions. [2022-07-19 23:41:16,671 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 10739 transitions. Word has length 144 [2022-07-19 23:41:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:41:16,673 INFO L495 AbstractCegarLoop]: Abstraction has 7472 states and 10739 transitions. [2022-07-19 23:41:16,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:41:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 10739 transitions. [2022-07-19 23:41:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 23:41:16,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:41:16,680 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:41:16,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:41:16,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:41:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:41:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash -157674826, now seen corresponding path program 1 times [2022-07-19 23:41:16,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:41:16,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678150945] [2022-07-19 23:41:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:41:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:41:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:41:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:41:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:41:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:41:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:41:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:41:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:41:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:41:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:41:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:41:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 23:41:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 23:41:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:41:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:41:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:41:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:41:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:41:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:41:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-19 23:41:17,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:41:17,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678150945] [2022-07-19 23:41:17,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678150945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:41:17,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:41:17,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:41:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111382944] [2022-07-19 23:41:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:41:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:41:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:41:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:41:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:41:17,192 INFO L87 Difference]: Start difference. First operand 7472 states and 10739 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:41:26,696 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 [] [2022-07-19 23:41:28,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:30,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:32,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:34,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:41:36,679 INFO L93 Difference]: Finished difference Result 19747 states and 28972 transitions. [2022-07-19 23:41:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:41:36,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 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 156 [2022-07-19 23:41:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:41:36,772 INFO L225 Difference]: With dead ends: 19747 [2022-07-19 23:41:36,772 INFO L226 Difference]: Without dead ends: 12310 [2022-07-19 23:41:36,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:41:36,801 INFO L413 NwaCegarLoop]: 2786 mSDtfsCounter, 2003 mSDsluCounter, 5649 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 1024 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 6128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:41:36,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 8435 Invalid, 6128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 5100 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2022-07-19 23:41:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2022-07-19 23:41:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 10938. [2022-07-19 23:41:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10938 states, 8034 states have (on average 1.3783918347025144) internal successors, (11074), 8182 states have internal predecessors, (11074), 2278 states have call successors, (2278), 606 states have call predecessors, (2278), 625 states have return successors, (2324), 2277 states have call predecessors, (2324), 2277 states have call successors, (2324) [2022-07-19 23:41:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10938 states to 10938 states and 15676 transitions. [2022-07-19 23:41:37,312 INFO L78 Accepts]: Start accepts. Automaton has 10938 states and 15676 transitions. Word has length 156 [2022-07-19 23:41:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:41:37,312 INFO L495 AbstractCegarLoop]: Abstraction has 10938 states and 15676 transitions. [2022-07-19 23:41:37,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:41:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 10938 states and 15676 transitions. [2022-07-19 23:41:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 23:41:37,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:41:37,328 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:41:37,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:41:37,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:41:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:41:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -67194308, now seen corresponding path program 1 times [2022-07-19 23:41:37,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:41:37,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468845365] [2022-07-19 23:41:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:41:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:41:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:41:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:41:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:41:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:41:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:41:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:41:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:41:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:41:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:41:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:41:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:41:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:41:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:41:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:41:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:41:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:41:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:41:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:41:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:41:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-19 23:41:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:41:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468845365] [2022-07-19 23:41:37,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468845365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:41:37,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:41:37,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:41:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223135266] [2022-07-19 23:41:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:41:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:41:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:41:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:41:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:41:37,959 INFO L87 Difference]: Start difference. First operand 10938 states and 15676 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:41:45,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:47,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:49,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:51,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:53,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:55,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:41:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:41:57,155 INFO L93 Difference]: Finished difference Result 17155 states and 24873 transitions. [2022-07-19 23:41:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:41:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-07-19 23:41:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:41:57,181 INFO L225 Difference]: With dead ends: 17155 [2022-07-19 23:41:57,181 INFO L226 Difference]: Without dead ends: 6244 [2022-07-19 23:41:57,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:41:57,224 INFO L413 NwaCegarLoop]: 1839 mSDtfsCounter, 425 mSDsluCounter, 6593 mSDsCounter, 0 mSdLazyCounter, 3891 mSolverCounterSat, 356 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 8432 SdHoareTripleChecker+Invalid, 4253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3891 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:41:57,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 8432 Invalid, 4253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3891 Invalid, 6 Unknown, 0 Unchecked, 18.8s Time] [2022-07-19 23:41:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6244 states. [2022-07-19 23:41:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 5552. [2022-07-19 23:41:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5552 states, 4083 states have (on average 1.3771736468283124) internal successors, (5623), 4155 states have internal predecessors, (5623), 1149 states have call successors, (1149), 310 states have call predecessors, (1149), 319 states have return successors, (1172), 1150 states have call predecessors, (1172), 1148 states have call successors, (1172) [2022-07-19 23:41:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 7944 transitions. [2022-07-19 23:41:57,432 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 7944 transitions. Word has length 168 [2022-07-19 23:41:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:41:57,433 INFO L495 AbstractCegarLoop]: Abstraction has 5552 states and 7944 transitions. [2022-07-19 23:41:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:41:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 7944 transitions. [2022-07-19 23:41:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 23:41:57,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:41:57,442 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:41:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:41:57,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:41:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:41:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1257661886, now seen corresponding path program 1 times [2022-07-19 23:41:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:41:57,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817806598] [2022-07-19 23:41:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:41:57,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:41:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:41:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:41:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:41:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:41:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:41:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:41:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:41:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:41:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:41:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:41:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:41:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:41:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:41:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:41:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:41:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:41:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:41:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:41:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:41:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:41:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-19 23:41:57,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:41:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817806598] [2022-07-19 23:41:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817806598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:41:57,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:41:57,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:41:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532772167] [2022-07-19 23:41:57,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:41:57,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:41:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:41:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:41:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:41:57,928 INFO L87 Difference]: Start difference. First operand 5552 states and 7944 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:42:04,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:06,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:08,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:10,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:12,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:14,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:42:15,929 INFO L93 Difference]: Finished difference Result 11657 states and 17017 transitions. [2022-07-19 23:42:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:42:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-07-19 23:42:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:42:15,954 INFO L225 Difference]: With dead ends: 11657 [2022-07-19 23:42:15,954 INFO L226 Difference]: Without dead ends: 6179 [2022-07-19 23:42:15,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:42:15,971 INFO L413 NwaCegarLoop]: 1883 mSDtfsCounter, 406 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 347 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 5738 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:42:15,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 5738 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2709 Invalid, 6 Unknown, 0 Unchecked, 17.8s Time] [2022-07-19 23:42:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6179 states. [2022-07-19 23:42:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6179 to 5556. [2022-07-19 23:42:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4087 states have (on average 1.3763151455835576) internal successors, (5625), 4159 states have internal predecessors, (5625), 1149 states have call successors, (1149), 310 states have call predecessors, (1149), 319 states have return successors, (1172), 1150 states have call predecessors, (1172), 1148 states have call successors, (1172) [2022-07-19 23:42:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 7946 transitions. [2022-07-19 23:42:16,193 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 7946 transitions. Word has length 168 [2022-07-19 23:42:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:42:16,194 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 7946 transitions. [2022-07-19 23:42:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:42:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 7946 transitions. [2022-07-19 23:42:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 23:42:16,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:42:16,205 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:42:16,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:42:16,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:42:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:42:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash -128541508, now seen corresponding path program 1 times [2022-07-19 23:42:16,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:42:16,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119987463] [2022-07-19 23:42:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:42:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:42:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:42:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:42:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:42:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:42:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:42:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:42:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:42:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:42:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:42:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:42:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:42:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:42:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:42:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:42:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:42:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:42:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:42:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:42:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:42:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-19 23:42:16,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:42:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119987463] [2022-07-19 23:42:16,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119987463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:42:16,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:42:16,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:42:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075373858] [2022-07-19 23:42:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:42:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:42:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:42:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:42:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:42:16,841 INFO L87 Difference]: Start difference. First operand 5556 states and 7946 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:42:24,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:26,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:28,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:30,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:32,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:34,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:42:36,213 INFO L93 Difference]: Finished difference Result 11625 states and 16971 transitions. [2022-07-19 23:42:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:42:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-07-19 23:42:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:42:36,237 INFO L225 Difference]: With dead ends: 11625 [2022-07-19 23:42:36,238 INFO L226 Difference]: Without dead ends: 6143 [2022-07-19 23:42:36,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:42:36,253 INFO L413 NwaCegarLoop]: 1880 mSDtfsCounter, 393 mSDsluCounter, 6617 mSDsCounter, 0 mSdLazyCounter, 3986 mSolverCounterSat, 352 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 8497 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 3986 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:42:36,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 8497 Invalid, 4344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 3986 Invalid, 6 Unknown, 0 Unchecked, 19.1s Time] [2022-07-19 23:42:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2022-07-19 23:42:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 5556. [2022-07-19 23:42:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4083 states have (on average 1.3747244673034533) internal successors, (5613), 4157 states have internal predecessors, (5613), 1149 states have call successors, (1149), 310 states have call predecessors, (1149), 323 states have return successors, (1178), 1152 states have call predecessors, (1178), 1148 states have call successors, (1178) [2022-07-19 23:42:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 7940 transitions. [2022-07-19 23:42:36,512 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 7940 transitions. Word has length 168 [2022-07-19 23:42:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:42:36,512 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 7940 transitions. [2022-07-19 23:42:36,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:42:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 7940 transitions. [2022-07-19 23:42:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 23:42:36,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:42:36,523 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:42:36,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:42:36,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:42:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:42:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash -54204084, now seen corresponding path program 1 times [2022-07-19 23:42:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:42:36,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154973030] [2022-07-19 23:42:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:42:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:42:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:42:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:42:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:42:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:42:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:42:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:42:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:42:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:42:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:42:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:42:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:42:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:42:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:42:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:42:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:42:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:42:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:42:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:42:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:42:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 23:42:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-19 23:42:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:42:37,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154973030] [2022-07-19 23:42:37,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154973030] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:42:37,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436086096] [2022-07-19 23:42:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:42:37,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:42:37,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:42:37,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:42:37,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:42:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:38,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 5248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:42:38,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:42:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-19 23:42:38,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:42:38,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436086096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:42:38,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:42:38,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-07-19 23:42:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680373422] [2022-07-19 23:42:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:42:38,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:42:38,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:42:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:42:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:42:38,391 INFO L87 Difference]: Start difference. First operand 5556 states and 7940 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:42:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:42:40,095 INFO L93 Difference]: Finished difference Result 16519 states and 23627 transitions. [2022-07-19 23:42:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:42:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 175 [2022-07-19 23:42:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:42:40,157 INFO L225 Difference]: With dead ends: 16519 [2022-07-19 23:42:40,158 INFO L226 Difference]: Without dead ends: 16506 [2022-07-19 23:42:40,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:42:40,167 INFO L413 NwaCegarLoop]: 4077 mSDtfsCounter, 3703 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 7286 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:42:40,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3703 Valid, 7286 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 23:42:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16506 states. [2022-07-19 23:42:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16506 to 16472. [2022-07-19 23:42:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16472 states, 12095 states have (on average 1.3770152955766846) internal successors, (16655), 12325 states have internal predecessors, (16655), 3417 states have call successors, (3417), 918 states have call predecessors, (3417), 959 states have return successors, (3506), 3420 states have call predecessors, (3506), 3416 states have call successors, (3506) [2022-07-19 23:42:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16472 states to 16472 states and 23578 transitions. [2022-07-19 23:42:40,982 INFO L78 Accepts]: Start accepts. Automaton has 16472 states and 23578 transitions. Word has length 175 [2022-07-19 23:42:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:42:40,983 INFO L495 AbstractCegarLoop]: Abstraction has 16472 states and 23578 transitions. [2022-07-19 23:42:40,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:42:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16472 states and 23578 transitions. [2022-07-19 23:42:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 23:42:41,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:42:41,005 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:42:41,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:42:41,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:42:41,231 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:42:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:42:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1642551986, now seen corresponding path program 1 times [2022-07-19 23:42:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:42:41,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402479335] [2022-07-19 23:42:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:42:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:42:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:42:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:42:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:42:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:42:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:42:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:42:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:42:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:42:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:42:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:42:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:42:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:42:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:42:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:42:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:42:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:42:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:42:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:42:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:42:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 23:42:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:42:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-19 23:42:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:42:41,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402479335] [2022-07-19 23:42:41,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402479335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:42:41,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:42:41,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:42:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594713156] [2022-07-19 23:42:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:42:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:42:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:42:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:42:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:42:41,929 INFO L87 Difference]: Start difference. First operand 16472 states and 23578 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-19 23:42:49,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:51,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:53,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:55,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:57,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:42:59,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:01,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:03,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:43:05,276 INFO L93 Difference]: Finished difference Result 40517 states and 60381 transitions. [2022-07-19 23:43:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:43:05,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 175 [2022-07-19 23:43:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:43:05,399 INFO L225 Difference]: With dead ends: 40517 [2022-07-19 23:43:05,399 INFO L226 Difference]: Without dead ends: 24119 [2022-07-19 23:43:05,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:43:05,458 INFO L413 NwaCegarLoop]: 2532 mSDtfsCounter, 3164 mSDsluCounter, 4245 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 1435 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 3781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1435 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:43:05,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3402 Valid, 6777 Invalid, 3781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1435 Valid, 2338 Invalid, 8 Unknown, 0 Unchecked, 22.6s Time] [2022-07-19 23:43:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24119 states. [2022-07-19 23:43:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24119 to 16460. [2022-07-19 23:43:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16460 states, 12083 states have (on average 1.3763965902507656) internal successors, (16631), 12317 states have internal predecessors, (16631), 3417 states have call successors, (3417), 918 states have call predecessors, (3417), 959 states have return successors, (3506), 3416 states have call predecessors, (3506), 3416 states have call successors, (3506) [2022-07-19 23:43:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16460 states to 16460 states and 23554 transitions. [2022-07-19 23:43:06,451 INFO L78 Accepts]: Start accepts. Automaton has 16460 states and 23554 transitions. Word has length 175 [2022-07-19 23:43:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:43:06,452 INFO L495 AbstractCegarLoop]: Abstraction has 16460 states and 23554 transitions. [2022-07-19 23:43:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-19 23:43:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16460 states and 23554 transitions. [2022-07-19 23:43:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-19 23:43:06,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:43:06,477 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:43:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:43:06,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:43:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:43:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 25964212, now seen corresponding path program 1 times [2022-07-19 23:43:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:43:06,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394671738] [2022-07-19 23:43:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:43:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:43:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:43:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:43:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:43:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:43:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:43:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:43:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:43:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:43:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:43:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:43:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:43:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:43:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:43:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:43:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:43:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:43:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:43:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:07,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:43:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:43:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:43:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-19 23:43:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:43:07,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394671738] [2022-07-19 23:43:07,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394671738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:43:07,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:43:07,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:43:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312546516] [2022-07-19 23:43:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:43:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:43:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:43:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:43:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:43:07,080 INFO L87 Difference]: Start difference. First operand 16460 states and 23554 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-19 23:43:13,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:15,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:17,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:19,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:21,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:43:24,000 INFO L93 Difference]: Finished difference Result 41700 states and 60784 transitions. [2022-07-19 23:43:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:43:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 180 [2022-07-19 23:43:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:43:24,103 INFO L225 Difference]: With dead ends: 41700 [2022-07-19 23:43:24,103 INFO L226 Difference]: Without dead ends: 25314 [2022-07-19 23:43:24,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:43:24,159 INFO L413 NwaCegarLoop]: 2159 mSDtfsCounter, 3893 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 2583 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 5764 SdHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2583 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:43:24,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 5764 Invalid, 5958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2583 Valid, 3370 Invalid, 5 Unknown, 0 Unchecked, 16.1s Time] [2022-07-19 23:43:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25314 states. [2022-07-19 23:43:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25314 to 22474. [2022-07-19 23:43:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22474 states, 16500 states have (on average 1.3717575757575757) internal successors, (22634), 16840 states have internal predecessors, (22634), 4606 states have call successors, (4606), 1292 states have call predecessors, (4606), 1367 states have return successors, (4762), 4626 states have call predecessors, (4762), 4605 states have call successors, (4762) [2022-07-19 23:43:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22474 states to 22474 states and 32002 transitions. [2022-07-19 23:43:25,356 INFO L78 Accepts]: Start accepts. Automaton has 22474 states and 32002 transitions. Word has length 180 [2022-07-19 23:43:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:43:25,357 INFO L495 AbstractCegarLoop]: Abstraction has 22474 states and 32002 transitions. [2022-07-19 23:43:25,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-19 23:43:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22474 states and 32002 transitions. [2022-07-19 23:43:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-19 23:43:25,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:43:25,375 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:43:25,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 23:43:25,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:43:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:43:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1562427333, now seen corresponding path program 1 times [2022-07-19 23:43:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:43:25,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573926857] [2022-07-19 23:43:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:43:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:43:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:43:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:43:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:43:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:43:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:43:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:43:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:43:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:43:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:43:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:43:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:43:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:43:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:43:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:43:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:43:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:43:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:43:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:43:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:43:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 23:43:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 23:43:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 23:43:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-07-19 23:43:25,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:43:25,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573926857] [2022-07-19 23:43:25,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573926857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:43:25,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:43:25,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:43:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856014535] [2022-07-19 23:43:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:43:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:43:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:43:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:43:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:43:25,845 INFO L87 Difference]: Start difference. First operand 22474 states and 32002 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-19 23:43:31,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:33,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:35,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:37,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:43:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:43:38,489 INFO L93 Difference]: Finished difference Result 47195 states and 68548 transitions. [2022-07-19 23:43:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:43:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 191 [2022-07-19 23:43:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:43:38,613 INFO L225 Difference]: With dead ends: 47195 [2022-07-19 23:43:38,614 INFO L226 Difference]: Without dead ends: 24655 [2022-07-19 23:43:38,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:43:38,699 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 2326 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 878 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:43:38,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 3840 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 1275 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2022-07-19 23:43:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2022-07-19 23:43:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 22134. [2022-07-19 23:43:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22134 states, 16225 states have (on average 1.3691217257318953) internal successors, (22214), 16565 states have internal predecessors, (22214), 4566 states have call successors, (4566), 1267 states have call predecessors, (4566), 1342 states have return successors, (4712), 4586 states have call predecessors, (4712), 4565 states have call successors, (4712) [2022-07-19 23:43:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22134 states to 22134 states and 31492 transitions. [2022-07-19 23:43:39,861 INFO L78 Accepts]: Start accepts. Automaton has 22134 states and 31492 transitions. Word has length 191 [2022-07-19 23:43:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:43:39,862 INFO L495 AbstractCegarLoop]: Abstraction has 22134 states and 31492 transitions. [2022-07-19 23:43:39,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-19 23:43:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 22134 states and 31492 transitions. [2022-07-19 23:43:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-19 23:43:39,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:43:39,894 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:43:39,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 23:43:39,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:43:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:43:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1431758578, now seen corresponding path program 1 times [2022-07-19 23:43:39,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:43:39,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316698821] [2022-07-19 23:43:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:43:39,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:43:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:43:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:43:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:43:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:43:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:43:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:43:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:43:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:43:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:43:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:43:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:43:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:43:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:43:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:43:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:43:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:43:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:43:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:43:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:43:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 23:43:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-19 23:43:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 23:43:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:43:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-19 23:43:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:43:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-19 23:43:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:43:40,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316698821] [2022-07-19 23:43:40,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316698821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:43:40,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:43:40,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:43:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198174889] [2022-07-19 23:43:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:43:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:43:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:43:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:43:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:43:40,401 INFO L87 Difference]: Start difference. First operand 22134 states and 31492 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)