./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.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 fa270183f30c4108ea2b2e80e3a005f959ee3ae47a4a31957eaa79c7226d5c4e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:16:05,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:16:05,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:16:05,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:16:05,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:16:05,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:16:05,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:16:05,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:16:05,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:16:05,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:16:05,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:16:05,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:16:05,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:16:05,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:16:05,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:16:05,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:16:05,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:16:05,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:16:05,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:16:05,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:16:05,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:16:05,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:16:05,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:16:05,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:16:06,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:16:06,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:16:06,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:16:06,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:16:06,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:16:06,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:16:06,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:16:06,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:16:06,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:16:06,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:16:06,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:16:06,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:16:06,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:16:06,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:16:06,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:16:06,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:16:06,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:16:06,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:16:06,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:16:06,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:16:06,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:16:06,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:16:06,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:16:06,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:16:06,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:16:06,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:16:06,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:16:06,046 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:16:06,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:16:06,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:16:06,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:16:06,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:16:06,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:16:06,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:16:06,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:16:06,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:16:06,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:16:06,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:16:06,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:16:06,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:16:06,049 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:16:06,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:16:06,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:16:06,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa270183f30c4108ea2b2e80e3a005f959ee3ae47a4a31957eaa79c7226d5c4e [2022-07-21 12:16:06,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:16:06,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:16:06,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:16:06,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:16:06,319 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:16:06,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2022-07-21 12:16:06,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c22105e/ac87d03cb7c3474f86c6da875c6d42e0/FLAG5784fff76 [2022-07-21 12:16:07,015 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:16:07,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2022-07-21 12:16:07,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c22105e/ac87d03cb7c3474f86c6da875c6d42e0/FLAG5784fff76 [2022-07-21 12:16:07,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16c22105e/ac87d03cb7c3474f86c6da875c6d42e0 [2022-07-21 12:16:07,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:16:07,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:16:07,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:16:07,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:16:07,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:16:07,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:16:07" (1/1) ... [2022-07-21 12:16:07,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1353e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:07, skipping insertion in model container [2022-07-21 12:16:07,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:16:07" (1/1) ... [2022-07-21 12:16:07,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:16:07,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:16:08,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i[277190,277203] [2022-07-21 12:16:08,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:16:08,482 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:16:08,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i[277190,277203] [2022-07-21 12:16:08,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:16:08,926 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:16:08,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08 WrapperNode [2022-07-21 12:16:08,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:16:08,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:16:08,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:16:08,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:16:08,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,122 INFO L137 Inliner]: procedures = 225, calls = 1809, calls flagged for inlining = 92, calls inlined = 81, statements flattened = 3779 [2022-07-21 12:16:09,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:16:09,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:16:09,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:16:09,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:16:09,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:16:09,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:16:09,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:16:09,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:16:09,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (1/1) ... [2022-07-21 12:16:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:16:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:16:09,392 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) [2022-07-21 12:16:09,406 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 [2022-07-21 12:16:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 12:16:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 12:16:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-21 12:16:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-21 12:16:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:16:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:16:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:16:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:16:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:16:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:16:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_semusb_of_ttusb [2022-07-21 12:16:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_semusb_of_ttusb [2022-07-21 12:16:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-21 12:16:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-21 12:16:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 12:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 12:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-21 12:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-21 12:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:16:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:16:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-21 12:16:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-21 12:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 12:16:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 12:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 12:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure tda1004x_writereg [2022-07-21 12:16:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure tda1004x_writereg [2022-07-21 12:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-21 12:16:09,459 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-21 12:16:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:16:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-21 12:16:09,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-21 12:16:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:16:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_semi2c_of_ttusb [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_semi2c_of_ttusb [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure master_xfer [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure master_xfer [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2022-07-21 12:16:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2022-07-21 12:16:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_stop_iso_xfer [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_stop_iso_xfer [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_cmd [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_cmd [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:16:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:16:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_result [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_result [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_semi2c_of_ttusb [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_semi2c_of_ttusb [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_free_iso_urbs [2022-07-21 12:16:09,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_free_iso_urbs [2022-07-21 12:16:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:16:09,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:16:09,992 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:16:09,995 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:16:10,547 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:16:18,326 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:16:18,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:16:18,341 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 12:16:18,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:16:18 BoogieIcfgContainer [2022-07-21 12:16:18,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:16:18,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:16:18,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:16:18,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:16:18,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:16:07" (1/3) ... [2022-07-21 12:16:18,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4ec9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:16:18, skipping insertion in model container [2022-07-21 12:16:18,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:16:08" (2/3) ... [2022-07-21 12:16:18,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4ec9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:16:18, skipping insertion in model container [2022-07-21 12:16:18,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:16:18" (3/3) ... [2022-07-21 12:16:18,350 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2022-07-21 12:16:18,359 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:16:18,362 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:16:18,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:16:18,435 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@6fa1647f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15512db6 [2022-07-21 12:16:18,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:16:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 838 states, 620 states have (on average 1.4016129032258065) internal successors, (869), 648 states have internal predecessors, (869), 175 states have call successors, (175), 42 states have call predecessors, (175), 41 states have return successors, (169), 169 states have call predecessors, (169), 169 states have call successors, (169) [2022-07-21 12:16:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 12:16:18,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:16:18,457 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:16:18,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:16:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:16:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1865142948, now seen corresponding path program 1 times [2022-07-21 12:16:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:16:18,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582224888] [2022-07-21 12:16:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:16:18,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:16:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:16:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:16:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:16:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:16:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:16:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:16:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:16:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:16:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:16:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-07-21 12:16:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:16:19,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582224888] [2022-07-21 12:16:19,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582224888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:16:19,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:16:19,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 12:16:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100394517] [2022-07-21 12:16:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:16:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:16:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:16:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:16:19,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:16:19,534 INFO L87 Difference]: Start difference. First operand has 838 states, 620 states have (on average 1.4016129032258065) internal successors, (869), 648 states have internal predecessors, (869), 175 states have call successors, (175), 42 states have call predecessors, (175), 41 states have return successors, (169), 169 states have call predecessors, (169), 169 states have call successors, (169) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 12:16:24,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:26,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:29,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:31,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:34,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:16:36,117 INFO L93 Difference]: Finished difference Result 1710 states and 2586 transitions. [2022-07-21 12:16:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 12:16:36,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 146 [2022-07-21 12:16:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:16:36,144 INFO L225 Difference]: With dead ends: 1710 [2022-07-21 12:16:36,144 INFO L226 Difference]: Without dead ends: 864 [2022-07-21 12:16:36,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:16:36,158 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 278 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 385 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:16:36,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 3075 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 846 Invalid, 5 Unknown, 0 Unchecked, 16.4s Time] [2022-07-21 12:16:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-07-21 12:16:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 825. [2022-07-21 12:16:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 615 states have (on average 1.3853658536585365) internal successors, (852), 635 states have internal predecessors, (852), 169 states have call successors, (169), 41 states have call predecessors, (169), 40 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2022-07-21 12:16:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1180 transitions. [2022-07-21 12:16:36,340 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1180 transitions. Word has length 146 [2022-07-21 12:16:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:16:36,341 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1180 transitions. [2022-07-21 12:16:36,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 12:16:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1180 transitions. [2022-07-21 12:16:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 12:16:36,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:16:36,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:16:36,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 12:16:36,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:16:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:16:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -218311248, now seen corresponding path program 1 times [2022-07-21 12:16:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:16:36,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008429839] [2022-07-21 12:16:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:16:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:16:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:16:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:16:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:16:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:16:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:16:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:16:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:16:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:16:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:16:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:16:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:16:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:16:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-07-21 12:16:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:16:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008429839] [2022-07-21 12:16:37,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008429839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:16:37,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:16:37,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:16:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115598710] [2022-07-21 12:16:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:16:37,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:16:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:16:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:16:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:16:37,393 INFO L87 Difference]: Start difference. First operand 825 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 12:16:42,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:44,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:47,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:49,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:52,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:54,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:16:58,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:00,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:17:03,052 INFO L93 Difference]: Finished difference Result 2474 states and 3611 transitions. [2022-07-21 12:17:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:17:03,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 146 [2022-07-21 12:17:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:17:03,067 INFO L225 Difference]: With dead ends: 2474 [2022-07-21 12:17:03,068 INFO L226 Difference]: Without dead ends: 1675 [2022-07-21 12:17:03,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:17:03,075 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 1628 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 820 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:17:03,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 3542 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 1152 Invalid, 8 Unknown, 0 Unchecked, 25.3s Time] [2022-07-21 12:17:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2022-07-21 12:17:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1593. [2022-07-21 12:17:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1197 states have (on average 1.3893065998329157) internal successors, (1663), 1228 states have internal predecessors, (1663), 316 states have call successors, (316), 80 states have call predecessors, (316), 79 states have return successors, (306), 306 states have call predecessors, (306), 306 states have call successors, (306) [2022-07-21 12:17:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2285 transitions. [2022-07-21 12:17:03,222 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2285 transitions. Word has length 146 [2022-07-21 12:17:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:17:03,224 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2285 transitions. [2022-07-21 12:17:03,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 12:17:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2285 transitions. [2022-07-21 12:17:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 12:17:03,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:17:03,246 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:17:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 12:17:03,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:17:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:17:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1388631459, now seen corresponding path program 1 times [2022-07-21 12:17:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:17:03,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740384968] [2022-07-21 12:17:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:17:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:17:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:17:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:17:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:17:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:17:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:17:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:17:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:17:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:17:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:17:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 12:17:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 12:17:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-07-21 12:17:04,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:17:04,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740384968] [2022-07-21 12:17:04,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740384968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:17:04,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:17:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:17:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768858138] [2022-07-21 12:17:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:17:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:17:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:17:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:17:04,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:17:04,282 INFO L87 Difference]: Start difference. First operand 1593 states and 2285 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:17:09,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:13,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:15,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:19,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:21,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:23,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:17:26,746 INFO L93 Difference]: Finished difference Result 4852 states and 7087 transitions. [2022-07-21 12:17:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:17:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 157 [2022-07-21 12:17:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:17:26,761 INFO L225 Difference]: With dead ends: 4852 [2022-07-21 12:17:26,761 INFO L226 Difference]: Without dead ends: 3285 [2022-07-21 12:17:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:17:26,766 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1593 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 792 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:17:26,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 4179 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 1487 Invalid, 6 Unknown, 0 Unchecked, 22.1s Time] [2022-07-21 12:17:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-07-21 12:17:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3117. [2022-07-21 12:17:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 2350 states have (on average 1.3902127659574468) internal successors, (3267), 2403 states have internal predecessors, (3267), 609 states have call successors, (609), 158 states have call predecessors, (609), 157 states have return successors, (599), 599 states have call predecessors, (599), 599 states have call successors, (599) [2022-07-21 12:17:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4475 transitions. [2022-07-21 12:17:26,960 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4475 transitions. Word has length 157 [2022-07-21 12:17:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:17:26,960 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 4475 transitions. [2022-07-21 12:17:26,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:17:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4475 transitions. [2022-07-21 12:17:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 12:17:26,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:17:26,962 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:17:26,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 12:17:26,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:17:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:17:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash -129546151, now seen corresponding path program 1 times [2022-07-21 12:17:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:17:26,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415357460] [2022-07-21 12:17:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:17:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:17:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:17:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:17:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:17:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:17:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:17:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:17:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:17:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:17:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:17:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 12:17:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 12:17:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-07-21 12:17:27,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:17:27,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415357460] [2022-07-21 12:17:27,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415357460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:17:27,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:17:27,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:17:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588232332] [2022-07-21 12:17:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:17:27,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:17:27,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:17:27,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:17:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:17:27,556 INFO L87 Difference]: Start difference. First operand 3117 states and 4475 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:17:31,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:34,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:36,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:39,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:17:40,546 INFO L93 Difference]: Finished difference Result 9485 states and 13863 transitions. [2022-07-21 12:17:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:17:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 160 [2022-07-21 12:17:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:17:40,577 INFO L225 Difference]: With dead ends: 9485 [2022-07-21 12:17:40,577 INFO L226 Difference]: Without dead ends: 6404 [2022-07-21 12:17:40,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:17:40,588 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 1895 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 1165 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:17:40,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 2940 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1165 Valid, 715 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2022-07-21 12:17:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2022-07-21 12:17:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 6090. [2022-07-21 12:17:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 4602 states have (on average 1.38961321164711) internal successors, (6395), 4700 states have internal predecessors, (6395), 1176 states have call successors, (1176), 312 states have call predecessors, (1176), 311 states have return successors, (1166), 1165 states have call predecessors, (1166), 1166 states have call successors, (1166) [2022-07-21 12:17:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 8737 transitions. [2022-07-21 12:17:40,755 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 8737 transitions. Word has length 160 [2022-07-21 12:17:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:17:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 6090 states and 8737 transitions. [2022-07-21 12:17:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:17:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 8737 transitions. [2022-07-21 12:17:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 12:17:40,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:17:40,759 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:17:40,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 12:17:40,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:17:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:17:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 354650617, now seen corresponding path program 1 times [2022-07-21 12:17:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:17:40,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437404405] [2022-07-21 12:17:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:17:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:17:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:17:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:17:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:17:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:17:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:17:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:17:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:17:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:17:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:17:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 12:17:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 12:17:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-07-21 12:17:41,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:17:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437404405] [2022-07-21 12:17:41,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437404405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:17:41,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:17:41,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 12:17:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962670482] [2022-07-21 12:17:41,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:17:41,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:17:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:17:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:17:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:17:41,166 INFO L87 Difference]: Start difference. First operand 6090 states and 8737 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:17:46,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:48,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:17:50,368 INFO L93 Difference]: Finished difference Result 13800 states and 20002 transitions. [2022-07-21 12:17:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 12:17:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-07-21 12:17:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:17:50,406 INFO L225 Difference]: With dead ends: 13800 [2022-07-21 12:17:50,406 INFO L226 Difference]: Without dead ends: 7746 [2022-07-21 12:17:50,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:17:50,425 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 1075 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 959 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-21 12:17:50,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 3672 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 858 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-07-21 12:17:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7746 states. [2022-07-21 12:17:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7746 to 7258. [2022-07-21 12:17:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7258 states, 5522 states have (on average 1.3915248098515032) internal successors, (7684), 5620 states have internal predecessors, (7684), 1344 states have call successors, (1344), 392 states have call predecessors, (1344), 391 states have return successors, (1334), 1333 states have call predecessors, (1334), 1334 states have call successors, (1334) [2022-07-21 12:17:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7258 states to 7258 states and 10362 transitions. [2022-07-21 12:17:50,642 INFO L78 Accepts]: Start accepts. Automaton has 7258 states and 10362 transitions. Word has length 162 [2022-07-21 12:17:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:17:50,642 INFO L495 AbstractCegarLoop]: Abstraction has 7258 states and 10362 transitions. [2022-07-21 12:17:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 12:17:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7258 states and 10362 transitions. [2022-07-21 12:17:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 12:17:50,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:17:50,645 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:17:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 12:17:50,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:17:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:17:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1119424791, now seen corresponding path program 1 times [2022-07-21 12:17:50,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:17:50,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031494782] [2022-07-21 12:17:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:17:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:17:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:17:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:17:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:17:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:17:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:17:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:17:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:17:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:17:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:17:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:17:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:17:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:17:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:17:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:17:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:17:51,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031494782] [2022-07-21 12:17:51,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031494782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:17:51,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:17:51,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:17:51,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991011855] [2022-07-21 12:17:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:17:51,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:17:51,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:17:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:17:51,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:17:51,192 INFO L87 Difference]: Start difference. First operand 7258 states and 10362 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:17:56,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:17:58,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:00,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:03,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:05,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:08,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:18:10,028 INFO L93 Difference]: Finished difference Result 7722 states and 11274 transitions. [2022-07-21 12:18:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:18:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 166 [2022-07-21 12:18:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:18:10,067 INFO L225 Difference]: With dead ends: 7722 [2022-07-21 12:18:10,068 INFO L226 Difference]: Without dead ends: 7719 [2022-07-21 12:18:10,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:18:10,072 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 1310 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 437 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:18:10,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 3026 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 850 Invalid, 6 Unknown, 0 Unchecked, 18.6s Time] [2022-07-21 12:18:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2022-07-21 12:18:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7257. [2022-07-21 12:18:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7257 states, 5522 states have (on average 1.3913437160449114) internal successors, (7683), 5619 states have internal predecessors, (7683), 1343 states have call successors, (1343), 392 states have call predecessors, (1343), 391 states have return successors, (1334), 1333 states have call predecessors, (1334), 1334 states have call successors, (1334) [2022-07-21 12:18:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7257 states to 7257 states and 10360 transitions. [2022-07-21 12:18:10,302 INFO L78 Accepts]: Start accepts. Automaton has 7257 states and 10360 transitions. Word has length 166 [2022-07-21 12:18:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:18:10,303 INFO L495 AbstractCegarLoop]: Abstraction has 7257 states and 10360 transitions. [2022-07-21 12:18:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 7257 states and 10360 transitions. [2022-07-21 12:18:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 12:18:10,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:18:10,304 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:18:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 12:18:10,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:18:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:18:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -342633619, now seen corresponding path program 1 times [2022-07-21 12:18:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:18:10,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637582382] [2022-07-21 12:18:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:18:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:18:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:18:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:18:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:18:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:18:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:18:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:18:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:18:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:18:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:18:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:18:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:18:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:18:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637582382] [2022-07-21 12:18:10,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637582382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:18:10,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:18:10,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:18:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923049958] [2022-07-21 12:18:10,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:18:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:18:10,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:18:10,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:18:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:18:10,708 INFO L87 Difference]: Start difference. First operand 7257 states and 10360 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:15,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:17,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:18:19,296 INFO L93 Difference]: Finished difference Result 7721 states and 11272 transitions. [2022-07-21 12:18:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:18:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 167 [2022-07-21 12:18:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:18:19,313 INFO L225 Difference]: With dead ends: 7721 [2022-07-21 12:18:19,313 INFO L226 Difference]: Without dead ends: 7718 [2022-07-21 12:18:19,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:18:19,316 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1349 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 463 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:18:19,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2404 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2022-07-21 12:18:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2022-07-21 12:18:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7256. [2022-07-21 12:18:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7256 states, 5522 states have (on average 1.3911626222383195) internal successors, (7682), 5618 states have internal predecessors, (7682), 1342 states have call successors, (1342), 392 states have call predecessors, (1342), 391 states have return successors, (1334), 1333 states have call predecessors, (1334), 1334 states have call successors, (1334) [2022-07-21 12:18:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7256 states to 7256 states and 10358 transitions. [2022-07-21 12:18:19,482 INFO L78 Accepts]: Start accepts. Automaton has 7256 states and 10358 transitions. Word has length 167 [2022-07-21 12:18:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:18:19,485 INFO L495 AbstractCegarLoop]: Abstraction has 7256 states and 10358 transitions. [2022-07-21 12:18:19,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 7256 states and 10358 transitions. [2022-07-21 12:18:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-21 12:18:19,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:18:19,486 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:18:19,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 12:18:19,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:18:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:18:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2031906196, now seen corresponding path program 1 times [2022-07-21 12:18:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:18:19,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277113883] [2022-07-21 12:18:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:18:19,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:18:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:18:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:18:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:18:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:18:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:18:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:18:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:18:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:18:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:18:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:18:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:18:19,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:18:19,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277113883] [2022-07-21 12:18:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277113883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:18:19,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:18:19,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:18:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27089031] [2022-07-21 12:18:19,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:18:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:18:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:18:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:18:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:18:19,981 INFO L87 Difference]: Start difference. First operand 7256 states and 10358 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:23,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:26,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:18:27,538 INFO L93 Difference]: Finished difference Result 7720 states and 11270 transitions. [2022-07-21 12:18:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 12:18:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 168 [2022-07-21 12:18:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:18:27,560 INFO L225 Difference]: With dead ends: 7720 [2022-07-21 12:18:27,561 INFO L226 Difference]: Without dead ends: 7717 [2022-07-21 12:18:27,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:18:27,565 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 1462 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 634 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:18:27,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1824 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 305 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-07-21 12:18:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7717 states. [2022-07-21 12:18:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7717 to 7255. [2022-07-21 12:18:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7255 states, 5522 states have (on average 1.3909815284317277) internal successors, (7681), 5617 states have internal predecessors, (7681), 1341 states have call successors, (1341), 392 states have call predecessors, (1341), 391 states have return successors, (1334), 1333 states have call predecessors, (1334), 1334 states have call successors, (1334) [2022-07-21 12:18:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7255 states to 7255 states and 10356 transitions. [2022-07-21 12:18:27,759 INFO L78 Accepts]: Start accepts. Automaton has 7255 states and 10356 transitions. Word has length 168 [2022-07-21 12:18:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:18:27,760 INFO L495 AbstractCegarLoop]: Abstraction has 7255 states and 10356 transitions. [2022-07-21 12:18:27,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7255 states and 10356 transitions. [2022-07-21 12:18:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 12:18:27,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:18:27,762 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:18:27,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 12:18:27,762 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:18:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:18:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1435223632, now seen corresponding path program 1 times [2022-07-21 12:18:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:18:27,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320107938] [2022-07-21 12:18:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:18:27,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:18:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:18:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:18:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:18:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:18:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:18:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:18:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:18:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:18:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:18:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:18:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:18:28,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:18:28,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320107938] [2022-07-21 12:18:28,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320107938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:18:28,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:18:28,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:18:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847236389] [2022-07-21 12:18:28,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:18:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:18:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:18:28,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:18:28,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:18:28,369 INFO L87 Difference]: Start difference. First operand 7255 states and 10356 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:33,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:35,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:40,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:42,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:44,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:18:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:18:47,456 INFO L93 Difference]: Finished difference Result 20270 states and 29464 transitions. [2022-07-21 12:18:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:18:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 169 [2022-07-21 12:18:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:18:47,500 INFO L225 Difference]: With dead ends: 20270 [2022-07-21 12:18:47,500 INFO L226 Difference]: Without dead ends: 13059 [2022-07-21 12:18:47,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:18:47,524 INFO L413 NwaCegarLoop]: 1263 mSDtfsCounter, 1365 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 616 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:18:47,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 4036 Invalid, 1842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [616 Valid, 1221 Invalid, 5 Unknown, 0 Unchecked, 18.5s Time] [2022-07-21 12:18:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13059 states. [2022-07-21 12:18:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13059 to 12175. [2022-07-21 12:18:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 9389 states have (on average 1.3933326232825647) internal successors, (13082), 9493 states have internal predecessors, (13082), 2078 states have call successors, (2078), 717 states have call predecessors, (2078), 707 states have return successors, (2238), 2060 states have call predecessors, (2238), 2070 states have call successors, (2238) [2022-07-21 12:18:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 17398 transitions. [2022-07-21 12:18:47,897 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 17398 transitions. Word has length 169 [2022-07-21 12:18:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:18:47,898 INFO L495 AbstractCegarLoop]: Abstraction has 12175 states and 17398 transitions. [2022-07-21 12:18:47,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 17398 transitions. [2022-07-21 12:18:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-21 12:18:47,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:18:47,901 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:18:47,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 12:18:47,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:18:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:18:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1542070767, now seen corresponding path program 1 times [2022-07-21 12:18:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:18:47,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618295879] [2022-07-21 12:18:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:18:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:18:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:18:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:18:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:18:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:18:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:18:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:18:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:18:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:18:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:18:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:18:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:18:48,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:18:48,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618295879] [2022-07-21 12:18:48,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618295879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:18:48,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:18:48,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:18:48,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221747048] [2022-07-21 12:18:48,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:18:48,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:18:48,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:18:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:18:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:18:48,446 INFO L87 Difference]: Start difference. First operand 12175 states and 17398 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:52,063 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 [] [2022-07-21 12:18:56,767 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 [] [2022-07-21 12:18:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:18:58,519 INFO L93 Difference]: Finished difference Result 36773 states and 55273 transitions. [2022-07-21 12:18:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:18:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 170 [2022-07-21 12:18:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:18:58,611 INFO L225 Difference]: With dead ends: 36773 [2022-07-21 12:18:58,612 INFO L226 Difference]: Without dead ends: 24633 [2022-07-21 12:18:58,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:18:58,663 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1774 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 922 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:18:58,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 3528 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 725 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2022-07-21 12:18:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24633 states. [2022-07-21 12:18:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24633 to 22939. [2022-07-21 12:18:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22939 states, 17769 states have (on average 1.390680398446733) internal successors, (24711), 18019 states have internal predecessors, (24711), 3835 states have call successors, (3835), 1334 states have call predecessors, (3835), 1334 states have return successors, (5109), 3777 states have call predecessors, (5109), 3789 states have call successors, (5109) [2022-07-21 12:18:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22939 states to 22939 states and 33655 transitions. [2022-07-21 12:18:59,510 INFO L78 Accepts]: Start accepts. Automaton has 22939 states and 33655 transitions. Word has length 170 [2022-07-21 12:18:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:18:59,510 INFO L495 AbstractCegarLoop]: Abstraction has 22939 states and 33655 transitions. [2022-07-21 12:18:59,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:18:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 22939 states and 33655 transitions. [2022-07-21 12:18:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-21 12:18:59,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:18:59,516 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:18:59,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 12:18:59,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:18:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:18:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash 642942886, now seen corresponding path program 1 times [2022-07-21 12:18:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:18:59,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246827891] [2022-07-21 12:18:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:18:59,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:18:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:18:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:18:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:18:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:18:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:18:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:18:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:18:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:18:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:19:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:19:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:19:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:19:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:19:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 12:19:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 12:19:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 12:19:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 12:19:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2022-07-21 12:19:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:19:00,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246827891] [2022-07-21 12:19:00,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246827891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:19:00,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:19:00,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 12:19:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724208181] [2022-07-21 12:19:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:19:00,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 12:19:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:19:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 12:19:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:19:00,211 INFO L87 Difference]: Start difference. First operand 22939 states and 33655 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 5 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 12:19:07,503 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 [] [2022-07-21 12:19:09,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:11,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:17,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:19,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:21,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:19:24,267 INFO L93 Difference]: Finished difference Result 48894 states and 73357 transitions. [2022-07-21 12:19:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 12:19:24,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 5 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 221 [2022-07-21 12:19:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:19:24,418 INFO L225 Difference]: With dead ends: 48894 [2022-07-21 12:19:24,418 INFO L226 Difference]: Without dead ends: 25999 [2022-07-21 12:19:24,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:19:24,485 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 522 mSDsluCounter, 4923 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 401 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 6141 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-07-21 12:19:24,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 6141 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1724 Invalid, 6 Unknown, 0 Unchecked, 22.9s Time] [2022-07-21 12:19:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25999 states. [2022-07-21 12:19:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25999 to 23719. [2022-07-21 12:19:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23719 states, 18387 states have (on average 1.3873388807309512) internal successors, (25509), 18697 states have internal predecessors, (25509), 3913 states have call successors, (3913), 1358 states have call predecessors, (3913), 1418 states have return successors, (5455), 3855 states have call predecessors, (5455), 3867 states have call successors, (5455) [2022-07-21 12:19:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23719 states to 23719 states and 34877 transitions. [2022-07-21 12:19:25,527 INFO L78 Accepts]: Start accepts. Automaton has 23719 states and 34877 transitions. Word has length 221 [2022-07-21 12:19:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:19:25,529 INFO L495 AbstractCegarLoop]: Abstraction has 23719 states and 34877 transitions. [2022-07-21 12:19:25,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 5 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 12:19:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 23719 states and 34877 transitions. [2022-07-21 12:19:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-21 12:19:25,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:19:25,534 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:19:25,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 12:19:25,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:19:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:19:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1633719842, now seen corresponding path program 1 times [2022-07-21 12:19:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:19:25,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504201321] [2022-07-21 12:19:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:19:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:19:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:19:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:19:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:19:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:19:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:19:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:19:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:19:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:19:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:19:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:19:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 12:19:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 12:19:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 12:19:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-21 12:19:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2022-07-21 12:19:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:19:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504201321] [2022-07-21 12:19:26,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504201321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:19:26,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:19:26,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 12:19:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598107567] [2022-07-21 12:19:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:19:26,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:19:26,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:19:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:19:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:19:26,155 INFO L87 Difference]: Start difference. First operand 23719 states and 34877 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:19:33,406 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 [] [2022-07-21 12:19:35,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:37,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:41,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:43,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:19:45,923 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 [] [2022-07-21 12:19:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:19:48,540 INFO L93 Difference]: Finished difference Result 25347 states and 37795 transitions. [2022-07-21 12:19:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:19:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 218 [2022-07-21 12:19:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:19:48,600 INFO L225 Difference]: With dead ends: 25347 [2022-07-21 12:19:48,600 INFO L226 Difference]: Without dead ends: 23235 [2022-07-21 12:19:48,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-21 12:19:48,612 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 293 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 357 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 5822 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:19:48,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 5822 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1602 Invalid, 6 Unknown, 0 Unchecked, 21.6s Time] [2022-07-21 12:19:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23235 states. [2022-07-21 12:19:49,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23235 to 22456. [2022-07-21 12:19:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22456 states, 17357 states have (on average 1.3806533387106066) internal successors, (23964), 17667 states have internal predecessors, (23964), 3738 states have call successors, (3738), 1299 states have call predecessors, (3738), 1360 states have return successors, (5253), 3681 states have call predecessors, (5253), 3693 states have call successors, (5253) [2022-07-21 12:19:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22456 states to 22456 states and 32955 transitions. [2022-07-21 12:19:49,532 INFO L78 Accepts]: Start accepts. Automaton has 22456 states and 32955 transitions. Word has length 218 [2022-07-21 12:19:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:19:49,532 INFO L495 AbstractCegarLoop]: Abstraction has 22456 states and 32955 transitions. [2022-07-21 12:19:49,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:19:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 22456 states and 32955 transitions. [2022-07-21 12:19:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-21 12:19:49,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:19:49,538 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 12:19:49,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 12:19:49,538 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:19:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:19:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1960182876, now seen corresponding path program 1 times [2022-07-21 12:19:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:19:49,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275886643] [2022-07-21 12:19:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:19:49,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:19:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:19:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:49,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:19:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:19:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:19:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:19:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:19:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:19:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:19:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:19:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:19:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 12:19:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:19:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:19:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 12:19:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 12:19:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-21 12:19:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:19:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2022-07-21 12:19:50,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:19:50,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275886643] [2022-07-21 12:19:50,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275886643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:19:50,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:19:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:19:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794837535] [2022-07-21 12:19:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:19:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:19:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:19:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:19:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:19:50,491 INFO L87 Difference]: Start difference. First operand 22456 states and 32955 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:19:55,777 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 [] [2022-07-21 12:20:01,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:04,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:20:06,528 INFO L93 Difference]: Finished difference Result 45629 states and 67683 transitions. [2022-07-21 12:20:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:20:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 218 [2022-07-21 12:20:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:20:06,683 INFO L225 Difference]: With dead ends: 45629 [2022-07-21 12:20:06,683 INFO L226 Difference]: Without dead ends: 23217 [2022-07-21 12:20:06,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:20:06,836 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 1128 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 477 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:20:06,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 4487 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1065 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2022-07-21 12:20:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23217 states. [2022-07-21 12:20:07,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23217 to 22249. [2022-07-21 12:20:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22249 states, 17190 states have (on average 1.3794066317626528) internal successors, (23712), 17553 states have internal predecessors, (23712), 3698 states have call successors, (3698), 1272 states have call predecessors, (3698), 1360 states have return successors, (4669), 3615 states have call predecessors, (4669), 3613 states have call successors, (4669) [2022-07-21 12:20:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22249 states to 22249 states and 32079 transitions. [2022-07-21 12:20:07,511 INFO L78 Accepts]: Start accepts. Automaton has 22249 states and 32079 transitions. Word has length 218 [2022-07-21 12:20:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:20:07,512 INFO L495 AbstractCegarLoop]: Abstraction has 22249 states and 32079 transitions. [2022-07-21 12:20:07,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 12:20:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 22249 states and 32079 transitions. [2022-07-21 12:20:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 12:20:07,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:20:07,518 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:20:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 12:20:07,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:20:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:20:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1361274858, now seen corresponding path program 1 times [2022-07-21 12:20:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:20:07,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647324824] [2022-07-21 12:20:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:20:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:20:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:20:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:20:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:20:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:20:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:20:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:20:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:20:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:20:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:20:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:20:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 12:20:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 12:20:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 12:20:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 12:20:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 12:20:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 12:20:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-21 12:20:08,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:20:08,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647324824] [2022-07-21 12:20:08,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647324824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:20:08,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:20:08,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:20:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102753819] [2022-07-21 12:20:08,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:20:08,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:20:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:20:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:20:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:20:08,034 INFO L87 Difference]: Start difference. First operand 22249 states and 32079 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, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 12:20:13,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:16,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:19,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:21,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:23,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:20:23,803 INFO L93 Difference]: Finished difference Result 34067 states and 49408 transitions. [2022-07-21 12:20:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:20:23,804 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, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 229 [2022-07-21 12:20:23,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:20:23,841 INFO L225 Difference]: With dead ends: 34067 [2022-07-21 12:20:23,841 INFO L226 Difference]: Without dead ends: 11858 [2022-07-21 12:20:23,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:20:23,995 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 285 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 354 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:20:23,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 3976 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1090 Invalid, 4 Unknown, 0 Unchecked, 15.3s Time] [2022-07-21 12:20:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2022-07-21 12:20:24,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 11285. [2022-07-21 12:20:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11285 states, 8709 states have (on average 1.38018142151797) internal successors, (12020), 8896 states have internal predecessors, (12020), 1875 states have call successors, (1875), 658 states have call predecessors, (1875), 700 states have return successors, (2354), 1826 states have call predecessors, (2354), 1826 states have call successors, (2354) [2022-07-21 12:20:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11285 states to 11285 states and 16249 transitions. [2022-07-21 12:20:24,314 INFO L78 Accepts]: Start accepts. Automaton has 11285 states and 16249 transitions. Word has length 229 [2022-07-21 12:20:24,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:20:24,314 INFO L495 AbstractCegarLoop]: Abstraction has 11285 states and 16249 transitions. [2022-07-21 12:20:24,315 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, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 12:20:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 11285 states and 16249 transitions. [2022-07-21 12:20:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 12:20:24,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:20:24,322 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:20:24,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 12:20:24,322 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:20:24,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:20:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash 545079573, now seen corresponding path program 1 times [2022-07-21 12:20:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 12:20:24,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219391502] [2022-07-21 12:20:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:20:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 12:20:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 12:20:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 12:20:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 12:20:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 12:20:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 12:20:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 12:20:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 12:20:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 12:20:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 12:20:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 12:20:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 12:20:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 12:20:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 12:20:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 12:20:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 12:20:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 12:20:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:20:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2022-07-21 12:20:24,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 12:20:24,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219391502] [2022-07-21 12:20:24,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219391502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:20:24,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:20:24,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 12:20:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995555790] [2022-07-21 12:20:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:20:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 12:20:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 12:20:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 12:20:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 12:20:24,872 INFO L87 Difference]: Start difference. First operand 11285 states and 16249 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 12:20:27,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 12:20:31,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []