./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.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 a9a20f3f691c8614da828fa262b8d39a0b290d1ce7d7bab1e11653a91cb5fcdd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:28:00,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:28:00,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:28:00,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:28:00,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:28:00,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:28:00,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:28:00,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:28:00,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:28:00,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:28:00,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:28:00,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:28:00,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:28:00,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:28:00,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:28:00,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:28:00,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:28:00,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:28:00,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:28:00,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:28:00,859 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:28:00,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:28:00,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:28:00,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:28:00,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:28:00,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:28:00,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:28:00,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:28:00,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:28:00,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:28:00,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:28:00,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:28:00,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:28:00,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:28:00,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:28:00,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:28:00,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:28:00,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:28:00,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:28:00,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:28:00,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:28:00,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:28:00,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:28:00,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:28:00,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:28:00,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:28:00,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:28:00,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:28:00,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:28:00,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:28:00,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:28:00,895 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:28:00,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:28:00,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:28:00,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:28:00,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:28:00,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:28:00,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:28:00,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:28:00,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:28:00,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:28:00,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:28:00,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:28:00,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:28:00,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:28:00,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:28:00,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:28:00,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:28:00,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:28:00,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:28:00,899 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:28:00,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:28:00,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:28:00,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9a20f3f691c8614da828fa262b8d39a0b290d1ce7d7bab1e11653a91cb5fcdd [2022-07-19 23:28:01,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:28:01,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:28:01,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:28:01,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:28:01,127 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:28:01,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.ko-entry_point.cil.out.i [2022-07-19 23:28:01,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01590bace/ad71d0a33ed24037bbdccba9fa6ed1c6/FLAGb5afbfc06 [2022-07-19 23:28:01,859 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:28:01,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.ko-entry_point.cil.out.i [2022-07-19 23:28:01,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01590bace/ad71d0a33ed24037bbdccba9fa6ed1c6/FLAGb5afbfc06 [2022-07-19 23:28:02,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01590bace/ad71d0a33ed24037bbdccba9fa6ed1c6 [2022-07-19 23:28:02,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:28:02,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:28:02,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:28:02,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:28:02,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:28:02,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:28:02" (1/1) ... [2022-07-19 23:28:02,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98e270f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:02, skipping insertion in model container [2022-07-19 23:28:02,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:28:02" (1/1) ... [2022-07-19 23:28:02,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:28:02,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:28:02,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.ko-entry_point.cil.out.i[161908,161921] [2022-07-19 23:28:02,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:28:02,985 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:28:03,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.ko-entry_point.cil.out.i[161908,161921] [2022-07-19 23:28:03,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:28:03,270 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:28:03,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03 WrapperNode [2022-07-19 23:28:03,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:28:03,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:28:03,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:28:03,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:28:03,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,423 INFO L137 Inliner]: procedures = 139, calls = 575, calls flagged for inlining = 59, calls inlined = 59, statements flattened = 1725 [2022-07-19 23:28:03,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:28:03,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:28:03,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:28:03,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:28:03,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:28:03,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:28:03,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:28:03,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:28:03,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (1/1) ... [2022-07-19 23:28:03,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:28:03,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:28:03,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:28:03,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:28:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-19 23:28:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-19 23:28:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:28:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:28:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:28:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:28:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:28:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:28:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-07-19 23:28:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-07-19 23:28:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-19 23:28:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-19 23:28:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:28:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:28:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:28:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:28:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-19 23:28:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-19 23:28:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:28:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_suspend [2022-07-19 23:28:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_suspend [2022-07-19 23:28:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:28:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:28:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_resume [2022-07-19 23:28:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_resume [2022-07-19 23:28:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:28:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:28:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-19 23:28:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-19 23:28:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:28:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:28:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:28:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:28:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_tx_fixup [2022-07-19 23:28:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_tx_fixup [2022-07-19 23:28:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:28:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-19 23:28:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-19 23:28:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2022-07-19 23:28:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2022-07-19 23:28:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:28:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-19 23:28:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-19 23:28:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:28:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:28:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:28:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:28:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_bind [2022-07-19 23:28:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_bind [2022-07-19 23:28:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_manage_power [2022-07-19 23:28:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_manage_power [2022-07-19 23:28:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-19 23:28:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-19 23:28:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:28:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-19 23:28:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:28:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:28:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-19 23:28:03,642 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-19 23:28:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_rx_fixup [2022-07-19 23:28:03,643 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_rx_fixup [2022-07-19 23:28:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-19 23:28:03,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-19 23:28:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_ncm_unbind [2022-07-19 23:28:03,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_ncm_unbind [2022-07-19 23:28:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_mbim_unbind [2022-07-19 23:28:03,645 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_mbim_unbind [2022-07-19 23:28:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:28:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-07-19 23:28:03,645 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-07-19 23:28:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:28:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:28:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:28:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:28:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:28:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2022-07-19 23:28:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2022-07-19 23:28:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:28:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:28:04,074 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:28:04,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:28:04,751 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:28:04,987 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-19 23:28:05,230 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:28:05,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:28:05,241 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:28:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:28:05 BoogieIcfgContainer [2022-07-19 23:28:05,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:28:05,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:28:05,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:28:05,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:28:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:28:02" (1/3) ... [2022-07-19 23:28:05,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da8b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:28:05, skipping insertion in model container [2022-07-19 23:28:05,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:28:03" (2/3) ... [2022-07-19 23:28:05,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da8b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:28:05, skipping insertion in model container [2022-07-19 23:28:05,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:28:05" (3/3) ... [2022-07-19 23:28:05,250 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--cdc_mbim.ko-entry_point.cil.out.i [2022-07-19 23:28:05,262 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:28:05,263 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:28:05,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:28:05,320 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@21ae8cc2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49e4ad68 [2022-07-19 23:28:05,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:28:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 523 states, 398 states have (on average 1.407035175879397) internal successors, (560), 412 states have internal predecessors, (560), 94 states have call successors, (94), 31 states have call predecessors, (94), 29 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-07-19 23:28:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 23:28:05,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:05,337 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:05,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1589467643, now seen corresponding path program 1 times [2022-07-19 23:28:05,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562368517] [2022-07-19 23:28:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:28:05,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:05,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562368517] [2022-07-19 23:28:05,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562368517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:05,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:05,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665581262] [2022-07-19 23:28:05,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:05,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:05,925 INFO L87 Difference]: Start difference. First operand has 523 states, 398 states have (on average 1.407035175879397) internal successors, (560), 412 states have internal predecessors, (560), 94 states have call successors, (94), 31 states have call predecessors, (94), 29 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 23:28:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:07,663 INFO L93 Difference]: Finished difference Result 1672 states and 2474 transitions. [2022-07-19 23:28:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:28:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-07-19 23:28:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:07,701 INFO L225 Difference]: With dead ends: 1672 [2022-07-19 23:28:07,701 INFO L226 Difference]: Without dead ends: 1132 [2022-07-19 23:28:07,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:28:07,718 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 1145 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:07,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 2187 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 23:28:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-19 23:28:07,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 969. [2022-07-19 23:28:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 753 states have (on average 1.3957503320053122) internal successors, (1051), 760 states have internal predecessors, (1051), 159 states have call successors, (159), 57 states have call predecessors, (159), 56 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-19 23:28:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1363 transitions. [2022-07-19 23:28:07,831 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1363 transitions. Word has length 40 [2022-07-19 23:28:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:07,832 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1363 transitions. [2022-07-19 23:28:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 23:28:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1363 transitions. [2022-07-19 23:28:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 23:28:07,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:07,838 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:07,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:28:07,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1949626109, now seen corresponding path program 1 times [2022-07-19 23:28:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:07,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45296230] [2022-07-19 23:28:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 23:28:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:08,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45296230] [2022-07-19 23:28:08,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45296230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:08,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:08,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595983770] [2022-07-19 23:28:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:08,007 INFO L87 Difference]: Start difference. First operand 969 states and 1363 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:09,047 INFO L93 Difference]: Finished difference Result 1131 states and 1631 transitions. [2022-07-19 23:28:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:28:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2022-07-19 23:28:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:09,056 INFO L225 Difference]: With dead ends: 1131 [2022-07-19 23:28:09,057 INFO L226 Difference]: Without dead ends: 1128 [2022-07-19 23:28:09,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:28:09,059 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 948 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:09,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1470 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 23:28:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-07-19 23:28:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 968. [2022-07-19 23:28:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 753 states have (on average 1.3944223107569722) internal successors, (1050), 759 states have internal predecessors, (1050), 158 states have call successors, (158), 57 states have call predecessors, (158), 56 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-19 23:28:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1361 transitions. [2022-07-19 23:28:09,117 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1361 transitions. Word has length 50 [2022-07-19 23:28:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:09,117 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1361 transitions. [2022-07-19 23:28:09,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1361 transitions. [2022-07-19 23:28:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-19 23:28:09,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:09,121 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:09,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:28:09,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash 308647439, now seen corresponding path program 1 times [2022-07-19 23:28:09,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:09,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677999751] [2022-07-19 23:28:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 23:28:09,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677999751] [2022-07-19 23:28:09,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677999751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:09,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:09,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342556180] [2022-07-19 23:28:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:09,270 INFO L87 Difference]: Start difference. First operand 968 states and 1361 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:10,183 INFO L93 Difference]: Finished difference Result 1130 states and 1629 transitions. [2022-07-19 23:28:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:28:10,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-07-19 23:28:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:10,190 INFO L225 Difference]: With dead ends: 1130 [2022-07-19 23:28:10,191 INFO L226 Difference]: Without dead ends: 1127 [2022-07-19 23:28:10,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:28:10,192 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 945 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:10,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1466 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 23:28:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-07-19 23:28:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 967. [2022-07-19 23:28:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 753 states have (on average 1.3930942895086322) internal successors, (1049), 758 states have internal predecessors, (1049), 157 states have call successors, (157), 57 states have call predecessors, (157), 56 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-19 23:28:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1359 transitions. [2022-07-19 23:28:10,265 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1359 transitions. Word has length 51 [2022-07-19 23:28:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:10,265 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1359 transitions. [2022-07-19 23:28:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1359 transitions. [2022-07-19 23:28:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 23:28:10,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:10,268 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:28:10,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 977921088, now seen corresponding path program 1 times [2022-07-19 23:28:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:10,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894557005] [2022-07-19 23:28:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 23:28:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894557005] [2022-07-19 23:28:10,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894557005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:10,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:10,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645821351] [2022-07-19 23:28:10,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:10,421 INFO L87 Difference]: Start difference. First operand 967 states and 1359 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:11,274 INFO L93 Difference]: Finished difference Result 1129 states and 1627 transitions. [2022-07-19 23:28:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:28:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-07-19 23:28:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:11,287 INFO L225 Difference]: With dead ends: 1129 [2022-07-19 23:28:11,287 INFO L226 Difference]: Without dead ends: 1126 [2022-07-19 23:28:11,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:28:11,291 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 942 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:11,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1462 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 23:28:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-07-19 23:28:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 966. [2022-07-19 23:28:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 753 states have (on average 1.3917662682602923) internal successors, (1048), 757 states have internal predecessors, (1048), 156 states have call successors, (156), 57 states have call predecessors, (156), 56 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-19 23:28:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1357 transitions. [2022-07-19 23:28:11,336 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1357 transitions. Word has length 52 [2022-07-19 23:28:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:11,337 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1357 transitions. [2022-07-19 23:28:11,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1357 transitions. [2022-07-19 23:28:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 23:28:11,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:11,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:11,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:28:11,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 250572594, now seen corresponding path program 1 times [2022-07-19 23:28:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:11,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820817729] [2022-07-19 23:28:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 23:28:11,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820817729] [2022-07-19 23:28:11,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820817729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:11,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:11,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845934065] [2022-07-19 23:28:11,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:11,473 INFO L87 Difference]: Start difference. First operand 966 states and 1357 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:12,836 INFO L93 Difference]: Finished difference Result 3187 states and 4578 transitions. [2022-07-19 23:28:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:28:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-07-19 23:28:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:12,849 INFO L225 Difference]: With dead ends: 3187 [2022-07-19 23:28:12,850 INFO L226 Difference]: Without dead ends: 2232 [2022-07-19 23:28:12,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:28:12,855 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 1173 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:12,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2165 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 23:28:12,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-07-19 23:28:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 1908. [2022-07-19 23:28:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1490 states have (on average 1.393959731543624) internal successors, (2077), 1496 states have internal predecessors, (2077), 305 states have call successors, (305), 113 states have call predecessors, (305), 112 states have return successors, (310), 302 states have call predecessors, (310), 302 states have call successors, (310) [2022-07-19 23:28:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2692 transitions. [2022-07-19 23:28:12,962 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2692 transitions. Word has length 53 [2022-07-19 23:28:12,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:12,962 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 2692 transitions. [2022-07-19 23:28:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2692 transitions. [2022-07-19 23:28:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 23:28:12,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:12,965 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:28:12,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -822389373, now seen corresponding path program 1 times [2022-07-19 23:28:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:12,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475781356] [2022-07-19 23:28:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 23:28:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:13,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475781356] [2022-07-19 23:28:13,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475781356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:13,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:13,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:13,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220491398] [2022-07-19 23:28:13,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:13,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:13,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:13,074 INFO L87 Difference]: Start difference. First operand 1908 states and 2692 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:13,937 INFO L93 Difference]: Finished difference Result 2230 states and 3223 transitions. [2022-07-19 23:28:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:28:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-07-19 23:28:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:13,951 INFO L225 Difference]: With dead ends: 2230 [2022-07-19 23:28:13,951 INFO L226 Difference]: Without dead ends: 2218 [2022-07-19 23:28:13,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:28:13,953 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 938 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1461 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 23:28:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2022-07-19 23:28:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1898. [2022-07-19 23:28:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1481 states have (on average 1.3936529372045916) internal successors, (2064), 1486 states have internal predecessors, (2064), 304 states have call successors, (304), 113 states have call predecessors, (304), 112 states have return successors, (310), 302 states have call predecessors, (310), 302 states have call successors, (310) [2022-07-19 23:28:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2678 transitions. [2022-07-19 23:28:14,070 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2678 transitions. Word has length 54 [2022-07-19 23:28:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:14,071 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 2678 transitions. [2022-07-19 23:28:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:28:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2678 transitions. [2022-07-19 23:28:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 23:28:14,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:14,074 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:14,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:28:14,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1986046453, now seen corresponding path program 1 times [2022-07-19 23:28:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:14,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839910288] [2022-07-19 23:28:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:28:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:28:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:28:14,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:14,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839910288] [2022-07-19 23:28:14,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839910288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:14,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:14,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:14,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661526753] [2022-07-19 23:28:14,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:14,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:14,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:14,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:14,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:14,184 INFO L87 Difference]: Start difference. First operand 1898 states and 2678 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:28:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:15,661 INFO L93 Difference]: Finished difference Result 6142 states and 8755 transitions. [2022-07-19 23:28:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:28:15,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-07-19 23:28:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:15,683 INFO L225 Difference]: With dead ends: 6142 [2022-07-19 23:28:15,684 INFO L226 Difference]: Without dead ends: 4255 [2022-07-19 23:28:15,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:28:15,693 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1124 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:15,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 2065 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:28:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2022-07-19 23:28:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 3604. [2022-07-19 23:28:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 2825 states have (on average 1.390796460176991) internal successors, (3929), 2834 states have internal predecessors, (3929), 555 states have call successors, (555), 224 states have call predecessors, (555), 223 states have return successors, (565), 553 states have call predecessors, (565), 553 states have call successors, (565) [2022-07-19 23:28:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 5049 transitions. [2022-07-19 23:28:15,866 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 5049 transitions. Word has length 66 [2022-07-19 23:28:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:15,867 INFO L495 AbstractCegarLoop]: Abstraction has 3604 states and 5049 transitions. [2022-07-19 23:28:15,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:28:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 5049 transitions. [2022-07-19 23:28:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 23:28:15,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:15,869 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:28:15,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:28:15,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -181003579, now seen corresponding path program 1 times [2022-07-19 23:28:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:15,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961579946] [2022-07-19 23:28:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:28:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:28:15,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961579946] [2022-07-19 23:28:15,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961579946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:15,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:15,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:15,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699059491] [2022-07-19 23:28:15,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:15,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:15,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:15,986 INFO L87 Difference]: Start difference. First operand 3604 states and 5049 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:28:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:17,869 INFO L93 Difference]: Finished difference Result 10431 states and 14766 transitions. [2022-07-19 23:28:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:28:17,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-07-19 23:28:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:17,912 INFO L225 Difference]: With dead ends: 10431 [2022-07-19 23:28:17,912 INFO L226 Difference]: Without dead ends: 6848 [2022-07-19 23:28:17,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:28:17,932 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 962 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:17,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 2856 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 23:28:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2022-07-19 23:28:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 5818. [2022-07-19 23:28:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5818 states, 4560 states have (on average 1.3888157894736841) internal successors, (6333), 4575 states have internal predecessors, (6333), 882 states have call successors, (882), 376 states have call predecessors, (882), 375 states have return successors, (896), 878 states have call predecessors, (896), 880 states have call successors, (896) [2022-07-19 23:28:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8111 transitions. [2022-07-19 23:28:18,241 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8111 transitions. Word has length 65 [2022-07-19 23:28:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:18,242 INFO L495 AbstractCegarLoop]: Abstraction has 5818 states and 8111 transitions. [2022-07-19 23:28:18,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:28:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8111 transitions. [2022-07-19 23:28:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 23:28:18,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:18,250 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 23:28:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:28:18,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1535676253, now seen corresponding path program 1 times [2022-07-19 23:28:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135009526] [2022-07-19 23:28:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:28:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:28:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:28:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:28:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:28:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:28:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:28:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 23:28:18,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:18,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135009526] [2022-07-19 23:28:18,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135009526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:18,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:18,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:28:18,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021608886] [2022-07-19 23:28:18,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:18,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:28:18,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:28:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:28:18,554 INFO L87 Difference]: Start difference. First operand 5818 states and 8111 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 23:28:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:20,992 INFO L93 Difference]: Finished difference Result 10230 states and 14590 transitions. [2022-07-19 23:28:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:28:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 122 [2022-07-19 23:28:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:21,061 INFO L225 Difference]: With dead ends: 10230 [2022-07-19 23:28:21,062 INFO L226 Difference]: Without dead ends: 10227 [2022-07-19 23:28:21,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:28:21,070 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 2079 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:21,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 3876 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 23:28:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2022-07-19 23:28:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 8696. [2022-07-19 23:28:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8696 states, 6817 states have (on average 1.3902009681678158) internal successors, (9477), 6839 states have internal predecessors, (9477), 1318 states have call successors, (1318), 561 states have call predecessors, (1318), 560 states have return successors, (1364), 1313 states have call predecessors, (1364), 1316 states have call successors, (1364) [2022-07-19 23:28:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 12159 transitions. [2022-07-19 23:28:21,547 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 12159 transitions. Word has length 122 [2022-07-19 23:28:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:21,548 INFO L495 AbstractCegarLoop]: Abstraction has 8696 states and 12159 transitions. [2022-07-19 23:28:21,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 23:28:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 12159 transitions. [2022-07-19 23:28:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 23:28:21,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:21,555 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 23:28:21,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:28:21,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1504761742, now seen corresponding path program 1 times [2022-07-19 23:28:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:21,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330677645] [2022-07-19 23:28:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:21,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:28:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:28:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:28:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:28:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:28:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:28:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:28:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 23:28:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330677645] [2022-07-19 23:28:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330677645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:21,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:21,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:28:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043135276] [2022-07-19 23:28:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:21,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:28:21,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:28:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:28:21,723 INFO L87 Difference]: Start difference. First operand 8696 states and 12159 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 23:28:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:23,589 INFO L93 Difference]: Finished difference Result 24686 states and 34978 transitions. [2022-07-19 23:28:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:28:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2022-07-19 23:28:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:23,653 INFO L225 Difference]: With dead ends: 24686 [2022-07-19 23:28:23,654 INFO L226 Difference]: Without dead ends: 16027 [2022-07-19 23:28:23,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:28:23,688 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 1082 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:23,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2411 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 23:28:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16027 states. [2022-07-19 23:28:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16027 to 13615. [2022-07-19 23:28:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13615 states, 10743 states have (on average 1.385832635204319) internal successors, (14888), 10774 states have internal predecessors, (14888), 1996 states have call successors, (1996), 876 states have call predecessors, (1996), 875 states have return successors, (2054), 1988 states have call predecessors, (2054), 1994 states have call successors, (2054) [2022-07-19 23:28:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 18938 transitions. [2022-07-19 23:28:24,460 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 18938 transitions. Word has length 123 [2022-07-19 23:28:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:24,460 INFO L495 AbstractCegarLoop]: Abstraction has 13615 states and 18938 transitions. [2022-07-19 23:28:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 23:28:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 18938 transitions. [2022-07-19 23:28:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 23:28:24,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:24,468 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 23:28:24,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 23:28:24,468 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1949944417, now seen corresponding path program 1 times [2022-07-19 23:28:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:24,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149337565] [2022-07-19 23:28:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:28:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:28:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:28:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:28:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:28:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:28:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:28:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 23:28:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149337565] [2022-07-19 23:28:24,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149337565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:24,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:24,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:28:24,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769624851] [2022-07-19 23:28:24,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:28:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:28:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:28:24,803 INFO L87 Difference]: Start difference. First operand 13615 states and 18938 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 23:28:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:26,708 INFO L93 Difference]: Finished difference Result 20835 states and 29445 transitions. [2022-07-19 23:28:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:28:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 122 [2022-07-19 23:28:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:26,770 INFO L225 Difference]: With dead ends: 20835 [2022-07-19 23:28:26,771 INFO L226 Difference]: Without dead ends: 16267 [2022-07-19 23:28:26,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:28:26,792 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 272 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 4243 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:28:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16267 states. [2022-07-19 23:28:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16267 to 13754. [2022-07-19 23:28:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13754 states, 10862 states have (on average 1.380684956729884) internal successors, (14997), 10913 states have internal predecessors, (14997), 1996 states have call successors, (1996), 876 states have call predecessors, (1996), 895 states have return successors, (2094), 1988 states have call predecessors, (2094), 1994 states have call successors, (2094) [2022-07-19 23:28:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13754 states to 13754 states and 19087 transitions. [2022-07-19 23:28:27,660 INFO L78 Accepts]: Start accepts. Automaton has 13754 states and 19087 transitions. Word has length 122 [2022-07-19 23:28:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:27,660 INFO L495 AbstractCegarLoop]: Abstraction has 13754 states and 19087 transitions. [2022-07-19 23:28:27,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 23:28:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13754 states and 19087 transitions. [2022-07-19 23:28:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 23:28:27,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:27,677 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 23:28:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 23:28:27,678 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1749310071, now seen corresponding path program 1 times [2022-07-19 23:28:27,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:27,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323391288] [2022-07-19 23:28:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:28:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:28:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:28:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:28:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:28:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:28:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:28:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:28:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 23:28:27,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:27,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323391288] [2022-07-19 23:28:27,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323391288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:27,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:27,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:28:27,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262981320] [2022-07-19 23:28:27,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:27,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:28:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:28:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:28:27,908 INFO L87 Difference]: Start difference. First operand 13754 states and 19087 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 23:28:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:30,135 INFO L93 Difference]: Finished difference Result 38432 states and 54071 transitions. [2022-07-19 23:28:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:28:30,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 141 [2022-07-19 23:28:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:30,233 INFO L225 Difference]: With dead ends: 38432 [2022-07-19 23:28:30,233 INFO L226 Difference]: Without dead ends: 24715 [2022-07-19 23:28:30,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:28:30,277 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1197 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:30,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 2340 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:28:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24715 states. [2022-07-19 23:28:31,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24715 to 21044. [2022-07-19 23:28:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21044 states, 16733 states have (on average 1.3772784318412716) internal successors, (23046), 16802 states have internal predecessors, (23046), 2944 states have call successors, (2944), 1335 states have call predecessors, (2944), 1366 states have return successors, (3062), 2936 states have call predecessors, (3062), 2942 states have call successors, (3062) [2022-07-19 23:28:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21044 states to 21044 states and 29052 transitions. [2022-07-19 23:28:31,266 INFO L78 Accepts]: Start accepts. Automaton has 21044 states and 29052 transitions. Word has length 141 [2022-07-19 23:28:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:31,266 INFO L495 AbstractCegarLoop]: Abstraction has 21044 states and 29052 transitions. [2022-07-19 23:28:31,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 23:28:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 21044 states and 29052 transitions. [2022-07-19 23:28:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 23:28:31,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:31,277 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 23:28:31,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:28:31,278 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1038448743, now seen corresponding path program 1 times [2022-07-19 23:28:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:31,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985341065] [2022-07-19 23:28:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:28:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:28:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:28:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:28:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:28:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 23:28:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:28:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:28:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 23:28:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:31,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985341065] [2022-07-19 23:28:31,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985341065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:31,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:28:31,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:28:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812744000] [2022-07-19 23:28:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:31,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:28:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:28:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:28:31,468 INFO L87 Difference]: Start difference. First operand 21044 states and 29052 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 23:28:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:33,532 INFO L93 Difference]: Finished difference Result 30746 states and 42907 transitions. [2022-07-19 23:28:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 23:28:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 140 [2022-07-19 23:28:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:33,596 INFO L225 Difference]: With dead ends: 30746 [2022-07-19 23:28:33,596 INFO L226 Difference]: Without dead ends: 16636 [2022-07-19 23:28:33,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:28:33,640 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 309 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:33,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 3511 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 23:28:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16636 states. [2022-07-19 23:28:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16636 to 14099. [2022-07-19 23:28:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14099 states, 11225 states have (on average 1.3730066815144766) internal successors, (15412), 11266 states have internal predecessors, (15412), 1966 states have call successors, (1966), 892 states have call predecessors, (1966), 907 states have return successors, (2012), 1960 states have call predecessors, (2012), 1964 states have call successors, (2012) [2022-07-19 23:28:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 19390 transitions. [2022-07-19 23:28:34,433 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 19390 transitions. Word has length 140 [2022-07-19 23:28:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:34,434 INFO L495 AbstractCegarLoop]: Abstraction has 14099 states and 19390 transitions. [2022-07-19 23:28:34,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 23:28:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 19390 transitions. [2022-07-19 23:28:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 23:28:34,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:28:34,446 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 23:28:34,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 23:28:34,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:28:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:28:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash 935962192, now seen corresponding path program 1 times [2022-07-19 23:28:34,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:28:34,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639766162] [2022-07-19 23:28:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:34,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:28:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:28:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:28:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:28:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:28:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:28:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:28:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:28:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:28:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:28:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:28:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:28:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 23:28:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:28:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:28:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-19 23:28:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:28:34,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639766162] [2022-07-19 23:28:34,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639766162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:28:34,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887881409] [2022-07-19 23:28:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:28:34,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:28:34,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:28:34,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:28:34,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:28:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:28:35,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 23:28:35,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:28:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 23:28:35,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:28:35,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887881409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:28:35,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:28:35,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-19 23:28:35,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567586045] [2022-07-19 23:28:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:28:35,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:28:35,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:28:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:28:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:28:35,540 INFO L87 Difference]: Start difference. First operand 14099 states and 19390 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 23:28:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:28:37,226 INFO L93 Difference]: Finished difference Result 14099 states and 19390 transitions. [2022-07-19 23:28:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:28:37,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 144 [2022-07-19 23:28:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:28:37,228 INFO L225 Difference]: With dead ends: 14099 [2022-07-19 23:28:37,228 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 23:28:37,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:28:37,248 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1279 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:28:37,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1197 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 23:28:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 23:28:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 23:28:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:28:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 23:28:37,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 144 [2022-07-19 23:28:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:28:37,251 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 23:28:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 23:28:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 23:28:37,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 23:28:37,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 23:28:37,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 23:28:37,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 23:28:37,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 23:28:42,831 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 62 DAG size of output: 60 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-19 23:29:54,220 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 71 DAG size of output: 69 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-19 23:29:59,776 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 71 DAG size of output: 69 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-19 23:30:10,029 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 68 DAG size of output: 66 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-19 23:30:40,894 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 71 DAG size of output: 69 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)