./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 23:12:19,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:12:19,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:12:19,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:12:19,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:12:19,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:12:19,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:12:19,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:12:19,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:12:19,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:12:19,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:12:19,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:12:19,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:12:19,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:12:19,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:12:19,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:12:19,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:12:19,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:12:19,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:12:19,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:12:19,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:12:19,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:12:19,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:12:19,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:12:19,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:12:19,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:12:19,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:12:19,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:12:19,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:12:19,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:12:19,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:12:19,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:12:19,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:12:19,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:12:19,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:12:19,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:12:19,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:12:19,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:12:19,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:12:19,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:12:19,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:12:19,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:12:19,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:12:19,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:12:19,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:12:19,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:12:19,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:12:19,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:12:19,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:12:19,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:12:19,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:12:19,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:12:19,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:12:19,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:12:19,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:12:19,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:12:19,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:12:19,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:12:19,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2021-11-02 23:12:20,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:12:20,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:12:20,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:12:20,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:12:20,171 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:12:20,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-02 23:12:20,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b8fa58c/e9251326bbb242c78fb923d5c16ba4e5/FLAG54c13f2e0 [2021-11-02 23:12:20,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:12:20,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-02 23:12:20,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b8fa58c/e9251326bbb242c78fb923d5c16ba4e5/FLAG54c13f2e0 [2021-11-02 23:12:21,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b8fa58c/e9251326bbb242c78fb923d5c16ba4e5 [2021-11-02 23:12:21,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:12:21,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:12:21,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:12:21,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:12:21,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:12:21,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:12:21" (1/1) ... [2021-11-02 23:12:21,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22454cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:21, skipping insertion in model container [2021-11-02 23:12:21,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:12:21" (1/1) ... [2021-11-02 23:12:21,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:12:21,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:12:22,448 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-11-02 23:12:22,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:12:22,527 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:12:22,757 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-11-02 23:12:22,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:12:22,858 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:12:22,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22 WrapperNode [2021-11-02 23:12:22,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:12:22,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:12:22,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:12:22,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:12:22,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:22,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:23,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:12:23,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:12:23,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:12:23,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:12:23,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:23,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:23,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:23,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:23,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:24,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:24,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:24,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:12:24,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:12:24,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:12:24,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:12:24,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (1/1) ... [2021-11-02 23:12:24,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:12:24,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:12:24,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:12:24,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:12:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-11-02 23:12:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-11-02 23:12:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:12:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:12:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:12:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-11-02 23:12:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-11-02 23:12:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:12:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-11-02 23:12:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-11-02 23:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-11-02 23:12:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-11-02 23:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:12:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:12:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:12:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:12:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:12:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:12:27,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:12:27,884 INFO L299 CfgBuilder]: Removed 3060 assume(true) statements. [2021-11-02 23:12:27,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:12:27 BoogieIcfgContainer [2021-11-02 23:12:27,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:12:27,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:12:27,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:12:27,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:12:27,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:12:21" (1/3) ... [2021-11-02 23:12:27,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c673d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:12:27, skipping insertion in model container [2021-11-02 23:12:27,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:22" (2/3) ... [2021-11-02 23:12:27,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c673d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:12:27, skipping insertion in model container [2021-11-02 23:12:27,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:12:27" (3/3) ... [2021-11-02 23:12:27,900 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-02 23:12:27,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:12:27,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 120 error locations. [2021-11-02 23:12:27,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:12:27,968 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 23:12:27,969 INFO L340 AbstractCegarLoop]: Starting to check reachability of 120 error locations. [2021-11-02 23:12:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 4528 states, 4387 states have (on average 1.4424435833143379) internal successors, (6328), 4510 states have internal predecessors, (6328), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 23:12:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 23:12:28,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:12:28,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:12:28,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:12:28,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:28,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1622129590, now seen corresponding path program 1 times [2021-11-02 23:12:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:28,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523269189] [2021-11-02 23:12:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:28,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:28,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:28,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523269189] [2021-11-02 23:12:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523269189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:12:28,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:12:28,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:12:28,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896345230] [2021-11-02 23:12:28,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:12:28,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:12:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:12:28,543 INFO L87 Difference]: Start difference. First operand has 4528 states, 4387 states have (on average 1.4424435833143379) internal successors, (6328), 4510 states have internal predecessors, (6328), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2021-11-02 23:12:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:38,094 INFO L93 Difference]: Finished difference Result 9052 states and 12721 transitions. [2021-11-02 23:12:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:12:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) Word has length 40 [2021-11-02 23:12:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:38,139 INFO L225 Difference]: With dead ends: 9052 [2021-11-02 23:12:38,139 INFO L226 Difference]: Without dead ends: 4517 [2021-11-02 23:12:38,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:12:38,162 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7923.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 6115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9191.96ms IncrementalHoareTripleChecker+Time [2021-11-02 23:12:38,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 6115 Unknown, 0 Unchecked, 16.34ms Time], IncrementalHoareTripleChecker [0 Valid, 6115 Invalid, 0 Unknown, 0 Unchecked, 9191.96ms Time] [2021-11-02 23:12:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2021-11-02 23:12:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4517. [2021-11-02 23:12:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4377 states have (on average 1.394334018734293) internal successors, (6103), 4499 states have internal predecessors, (6103), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 23:12:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6131 transitions. [2021-11-02 23:12:38,353 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6131 transitions. Word has length 40 [2021-11-02 23:12:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:38,353 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 6131 transitions. [2021-11-02 23:12:38,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2021-11-02 23:12:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6131 transitions. [2021-11-02 23:12:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 23:12:38,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:12:38,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:12:38,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:12:38,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:12:38,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 423605326, now seen corresponding path program 1 times [2021-11-02 23:12:38,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:38,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731922803] [2021-11-02 23:12:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:38,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:38,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:38,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731922803] [2021-11-02 23:12:38,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731922803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:12:38,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:12:38,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:12:38,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890193978] [2021-11-02 23:12:38,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:12:38,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:12:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:12:38,621 INFO L87 Difference]: Start difference. First operand 4517 states and 6131 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-02 23:12:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:52,886 INFO L93 Difference]: Finished difference Result 9019 states and 12247 transitions. [2021-11-02 23:12:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:12:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) Word has length 40 [2021-11-02 23:12:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:52,903 INFO L225 Difference]: With dead ends: 9019 [2021-11-02 23:12:52,904 INFO L226 Difference]: Without dead ends: 4518 [2021-11-02 23:12:52,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:12:52,914 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 6116 mSDsCounter, 0 mSdLazyCounter, 12205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12365.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13957.09ms IncrementalHoareTripleChecker+Time [2021-11-02 23:12:52,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 12205 Unknown, 0 Unchecked, 29.10ms Time], IncrementalHoareTripleChecker [0 Valid, 12205 Invalid, 0 Unknown, 0 Unchecked, 13957.09ms Time] [2021-11-02 23:12:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2021-11-02 23:12:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2021-11-02 23:12:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4378 states have (on average 1.394243947007766) internal successors, (6104), 4500 states have internal predecessors, (6104), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 23:12:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6132 transitions. [2021-11-02 23:12:53,008 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6132 transitions. Word has length 40 [2021-11-02 23:12:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:53,008 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 6132 transitions. [2021-11-02 23:12:53,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-02 23:12:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6132 transitions. [2021-11-02 23:12:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 23:12:53,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:12:53,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:12:53,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:12:53,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:12:53,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1942291979, now seen corresponding path program 1 times [2021-11-02 23:12:53,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:53,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442087433] [2021-11-02 23:12:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:53,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:53,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:53,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442087433] [2021-11-02 23:12:53,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442087433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:53,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094499493] [2021-11-02 23:12:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:53,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:53,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:12:53,264 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) [2021-11-02 23:12:53,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:12:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:54,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 23:12:54,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:54,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:12:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:54,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094499493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:12:54,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 23:12:54,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 23:12:54,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329342100] [2021-11-02 23:12:54,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:12:54,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:12:54,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:12:54,346 INFO L87 Difference]: Start difference. First operand 4518 states and 6132 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-11-02 23:12:56,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:13:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:19,804 INFO L93 Difference]: Finished difference Result 9038 states and 12284 transitions. [2021-11-02 23:13:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:13:19,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) Word has length 41 [2021-11-02 23:13:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:19,821 INFO L225 Difference]: With dead ends: 9038 [2021-11-02 23:13:19,821 INFO L226 Difference]: Without dead ends: 4537 [2021-11-02 23:13:19,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.32ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:13:19,835 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 18348 mSDsCounter, 0 mSdLazyCounter, 24411 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22511.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 24451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.28ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 24411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25085.68ms IncrementalHoareTripleChecker+Time [2021-11-02 23:13:19,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 24451 Unknown, 0 Unchecked, 42.28ms Time], IncrementalHoareTripleChecker [40 Valid, 24411 Invalid, 0 Unknown, 0 Unchecked, 25085.68ms Time] [2021-11-02 23:13:19,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2021-11-02 23:13:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 4537. [2021-11-02 23:13:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4397 states have (on average 1.3925403684330224) internal successors, (6123), 4519 states have internal predecessors, (6123), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 23:13:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6151 transitions. [2021-11-02 23:13:19,990 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6151 transitions. Word has length 41 [2021-11-02 23:13:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:19,991 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6151 transitions. [2021-11-02 23:13:19,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-11-02 23:13:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6151 transitions. [2021-11-02 23:13:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 23:13:19,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:13:19,992 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:13:20,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:20,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:20,205 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:13:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 954514318, now seen corresponding path program 2 times [2021-11-02 23:13:20,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:20,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925265240] [2021-11-02 23:13:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:20,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:13:20,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:20,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925265240] [2021-11-02 23:13:20,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925265240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:13:20,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:13:20,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:13:20,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910747817] [2021-11-02 23:13:20,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:13:20,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:13:20,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:13:20,439 INFO L87 Difference]: Start difference. First operand 4537 states and 6151 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-02 23:13:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:42,192 INFO L93 Difference]: Finished difference Result 12895 states and 17525 transitions. [2021-11-02 23:13:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:13:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) Word has length 44 [2021-11-02 23:13:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:42,224 INFO L225 Difference]: With dead ends: 12895 [2021-11-02 23:13:42,224 INFO L226 Difference]: Without dead ends: 8381 [2021-11-02 23:13:42,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:13:42,240 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5193 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18745.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.28ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21232.69ms IncrementalHoareTripleChecker+Time [2021-11-02 23:13:42,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5193 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 40.28ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 21232.69ms Time] [2021-11-02 23:13:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8381 states. [2021-11-02 23:13:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8381 to 8181. [2021-11-02 23:13:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8181 states, 8021 states have (on average 1.396459294352325) internal successors, (11201), 8146 states have internal predecessors, (11201), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (42), 24 states have call predecessors, (42), 28 states have call successors, (42) [2021-11-02 23:13:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 11271 transitions. [2021-11-02 23:13:42,420 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 11271 transitions. Word has length 44 [2021-11-02 23:13:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:42,420 INFO L470 AbstractCegarLoop]: Abstraction has 8181 states and 11271 transitions. [2021-11-02 23:13:42,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-02 23:13:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 11271 transitions. [2021-11-02 23:13:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 23:13:42,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:13:42,423 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:13:42,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:13:42,423 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:13:42,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 194607113, now seen corresponding path program 1 times [2021-11-02 23:13:42,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:42,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656541297] [2021-11-02 23:13:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:42,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:13:42,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:42,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656541297] [2021-11-02 23:13:42,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656541297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:13:42,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:13:42,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:13:42,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310019989] [2021-11-02 23:13:42,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:13:42,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:42,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:13:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:13:42,684 INFO L87 Difference]: Start difference. First operand 8181 states and 11271 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-02 23:14:04,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:04,040 INFO L93 Difference]: Finished difference Result 19687 states and 27101 transitions. [2021-11-02 23:14:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:14:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) Word has length 45 [2021-11-02 23:14:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:04,083 INFO L225 Difference]: With dead ends: 19687 [2021-11-02 23:14:04,083 INFO L226 Difference]: Without dead ends: 11529 [2021-11-02 23:14:04,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:14:04,104 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5252 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18368.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5252 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.64ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20797.38ms IncrementalHoareTripleChecker+Time [2021-11-02 23:14:04,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5252 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 32.64ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 20797.38ms Time] [2021-11-02 23:14:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11529 states. [2021-11-02 23:14:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11529 to 11329. [2021-11-02 23:14:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11329 states, 11149 states have (on average 1.396537806081263) internal successors, (15570), 11277 states have internal predecessors, (15570), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (84), 36 states have call predecessors, (84), 42 states have call successors, (84) [2021-11-02 23:14:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11329 states to 11329 states and 15696 transitions. [2021-11-02 23:14:04,324 INFO L78 Accepts]: Start accepts. Automaton has 11329 states and 15696 transitions. Word has length 45 [2021-11-02 23:14:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:04,324 INFO L470 AbstractCegarLoop]: Abstraction has 11329 states and 15696 transitions. [2021-11-02 23:14:04,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-02 23:14:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 11329 states and 15696 transitions. [2021-11-02 23:14:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 23:14:04,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:14:04,327 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:14:04,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:14:04,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:14:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1887678770, now seen corresponding path program 1 times [2021-11-02 23:14:04,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:04,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314171389] [2021-11-02 23:14:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:04,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:14:04,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:04,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314171389] [2021-11-02 23:14:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314171389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:14:04,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:14:04,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:14:04,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28497517] [2021-11-02 23:14:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:14:04,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:14:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:14:04,493 INFO L87 Difference]: Start difference. First operand 11329 states and 15696 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-02 23:14:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:26,362 INFO L93 Difference]: Finished difference Result 25437 states and 35249 transitions. [2021-11-02 23:14:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:14:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) Word has length 46 [2021-11-02 23:14:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:26,408 INFO L225 Difference]: With dead ends: 25437 [2021-11-02 23:14:26,408 INFO L226 Difference]: Without dead ends: 14131 [2021-11-02 23:14:26,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:14:26,439 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5271 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18812.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5271 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.60ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21263.35ms IncrementalHoareTripleChecker+Time [2021-11-02 23:14:26,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5271 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 33.60ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 21263.35ms Time] [2021-11-02 23:14:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14131 states. [2021-11-02 23:14:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14131 to 13931. [2021-11-02 23:14:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13931 states, 13731 states have (on average 1.3966936129924987) internal successors, (19178), 13862 states have internal predecessors, (19178), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (140), 48 states have call predecessors, (140), 56 states have call successors, (140) [2021-11-02 23:14:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 19374 transitions. [2021-11-02 23:14:26,724 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 19374 transitions. Word has length 46 [2021-11-02 23:14:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:26,725 INFO L470 AbstractCegarLoop]: Abstraction has 13931 states and 19374 transitions. [2021-11-02 23:14:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-02 23:14:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 19374 transitions. [2021-11-02 23:14:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 23:14:26,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:14:26,728 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:14:26,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:14:26,728 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:14:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2014030711, now seen corresponding path program 1 times [2021-11-02 23:14:26,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:26,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984237926] [2021-11-02 23:14:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:26,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:14:26,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:26,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984237926] [2021-11-02 23:14:26,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984237926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:14:26,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:14:26,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:14:26,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388165234] [2021-11-02 23:14:26,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:14:26,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:14:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:14:26,905 INFO L87 Difference]: Start difference. First operand 13931 states and 19374 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-02 23:14:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:46,799 INFO L93 Difference]: Finished difference Result 30093 states and 41913 transitions. [2021-11-02 23:14:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:14:46,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) Word has length 47 [2021-11-02 23:14:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:46,841 INFO L225 Difference]: With dead ends: 30093 [2021-11-02 23:14:46,842 INFO L226 Difference]: Without dead ends: 16185 [2021-11-02 23:14:46,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:14:46,874 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5290 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16968.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.39ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19240.06ms IncrementalHoareTripleChecker+Time [2021-11-02 23:14:46,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 27.39ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 19240.06ms Time] [2021-11-02 23:14:46,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-11-02 23:14:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 15985. [2021-11-02 23:14:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15985 states, 15765 states have (on average 1.3968284173802727) internal successors, (22021), 15899 states have internal predecessors, (22021), 70 states have call successors, (70), 30 states have call predecessors, (70), 30 states have return successors, (210), 60 states have call predecessors, (210), 70 states have call successors, (210) [2021-11-02 23:14:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15985 states to 15985 states and 22301 transitions. [2021-11-02 23:14:47,361 INFO L78 Accepts]: Start accepts. Automaton has 15985 states and 22301 transitions. Word has length 47 [2021-11-02 23:14:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:47,361 INFO L470 AbstractCegarLoop]: Abstraction has 15985 states and 22301 transitions. [2021-11-02 23:14:47,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-02 23:14:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15985 states and 22301 transitions. [2021-11-02 23:14:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 23:14:47,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:14:47,363 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:14:47,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:14:47,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:14:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 683636514, now seen corresponding path program 1 times [2021-11-02 23:14:47,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:47,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546704703] [2021-11-02 23:14:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:47,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:14:47,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:47,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546704703] [2021-11-02 23:14:47,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546704703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:14:47,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:14:47,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:14:47,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275303048] [2021-11-02 23:14:47,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:14:47,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:14:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:14:47,513 INFO L87 Difference]: Start difference. First operand 15985 states and 22301 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:15,620 INFO L93 Difference]: Finished difference Result 45694 states and 63920 transitions. [2021-11-02 23:15:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 23:15:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:15,699 INFO L225 Difference]: With dead ends: 45694 [2021-11-02 23:15:15,700 INFO L226 Difference]: Without dead ends: 29732 [2021-11-02 23:15:15,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:15,731 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 5529 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 17065 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24190.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 17069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.98ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27164.71ms IncrementalHoareTripleChecker+Time [2021-11-02 23:15:15,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 81 Invalid, 17069 Unknown, 0 Unchecked, 45.98ms Time], IncrementalHoareTripleChecker [4 Valid, 17065 Invalid, 0 Unknown, 0 Unchecked, 27164.71ms Time] [2021-11-02 23:15:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2021-11-02 23:15:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 23342. [2021-11-02 23:15:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23342 states, 23122 states have (on average 1.396635239166162) internal successors, (32293), 23256 states have internal predecessors, (32293), 70 states have call successors, (70), 30 states have call predecessors, (70), 30 states have return successors, (210), 60 states have call predecessors, (210), 70 states have call successors, (210) [2021-11-02 23:15:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23342 states to 23342 states and 32573 transitions. [2021-11-02 23:15:16,221 INFO L78 Accepts]: Start accepts. Automaton has 23342 states and 32573 transitions. Word has length 61 [2021-11-02 23:15:16,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:16,221 INFO L470 AbstractCegarLoop]: Abstraction has 23342 states and 32573 transitions. [2021-11-02 23:15:16,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:16,221 INFO L276 IsEmpty]: Start isEmpty. Operand 23342 states and 32573 transitions. [2021-11-02 23:15:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 23:15:16,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:15:16,224 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:16,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 23:15:16,224 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:15:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:16,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1845981959, now seen corresponding path program 1 times [2021-11-02 23:15:16,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:16,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038365380] [2021-11-02 23:15:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:16,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:15:16,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:16,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038365380] [2021-11-02 23:15:16,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038365380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:16,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:16,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:16,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297232122] [2021-11-02 23:15:16,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:16,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:16,381 INFO L87 Difference]: Start difference. First operand 23342 states and 32573 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:41,861 INFO L93 Difference]: Finished difference Result 60958 states and 85229 transitions. [2021-11-02 23:15:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-02 23:15:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:41,952 INFO L225 Difference]: With dead ends: 60958 [2021-11-02 23:15:41,953 INFO L226 Difference]: Without dead ends: 37639 [2021-11-02 23:15:42,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:42,013 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 4050 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 16150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21707.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 16152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24400.28ms IncrementalHoareTripleChecker+Time [2021-11-02 23:15:42,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4050 Valid, 80 Invalid, 16152 Unknown, 0 Unchecked, 42.41ms Time], IncrementalHoareTripleChecker [2 Valid, 16150 Invalid, 0 Unknown, 0 Unchecked, 24400.28ms Time] [2021-11-02 23:15:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37639 states. [2021-11-02 23:15:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37639 to 37469. [2021-11-02 23:15:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37469 states, 37159 states have (on average 1.4010064856427784) internal successors, (52060), 37308 states have internal predecessors, (52060), 130 states have call successors, (130), 60 states have call predecessors, (130), 60 states have return successors, (390), 110 states have call predecessors, (390), 130 states have call successors, (390) [2021-11-02 23:15:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37469 states to 37469 states and 52580 transitions. [2021-11-02 23:15:42,726 INFO L78 Accepts]: Start accepts. Automaton has 37469 states and 52580 transitions. Word has length 101 [2021-11-02 23:15:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:42,726 INFO L470 AbstractCegarLoop]: Abstraction has 37469 states and 52580 transitions. [2021-11-02 23:15:42,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 37469 states and 52580 transitions. [2021-11-02 23:15:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 23:15:42,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:15:42,730 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:42,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 23:15:42,730 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:15:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash 222843345, now seen corresponding path program 1 times [2021-11-02 23:15:42,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:42,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147270688] [2021-11-02 23:15:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:42,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:15:43,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:43,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147270688] [2021-11-02 23:15:43,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147270688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:43,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:43,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:15:43,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715900184] [2021-11-02 23:15:43,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:15:43,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:43,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:15:43,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:43,009 INFO L87 Difference]: Start difference. First operand 37469 states and 52580 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:45,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:16:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:28,046 INFO L93 Difference]: Finished difference Result 121417 states and 170248 transitions. [2021-11-02 23:16:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:16:28,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-02 23:16:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:28,279 INFO L225 Difference]: With dead ends: 121417 [2021-11-02 23:16:28,280 INFO L226 Difference]: Without dead ends: 83971 [2021-11-02 23:16:28,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:28,361 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 12234 mSDsluCounter, 16341 mSDsCounter, 0 mSdLazyCounter, 26458 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38685.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12239 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.14ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 26458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43156.77ms IncrementalHoareTripleChecker+Time [2021-11-02 23:16:28,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12239 Valid, 114 Invalid, 26473 Unknown, 0 Unchecked, 106.14ms Time], IncrementalHoareTripleChecker [15 Valid, 26458 Invalid, 0 Unknown, 0 Unchecked, 43156.77ms Time] [2021-11-02 23:16:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83971 states. [2021-11-02 23:16:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83971 to 37489. [2021-11-02 23:16:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37489 states, 37179 states have (on average 1.40079076898249) internal successors, (52080), 37328 states have internal predecessors, (52080), 130 states have call successors, (130), 60 states have call predecessors, (130), 60 states have return successors, (390), 110 states have call predecessors, (390), 130 states have call successors, (390) [2021-11-02 23:16:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37489 states to 37489 states and 52600 transitions. [2021-11-02 23:16:29,538 INFO L78 Accepts]: Start accepts. Automaton has 37489 states and 52600 transitions. Word has length 118 [2021-11-02 23:16:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:29,538 INFO L470 AbstractCegarLoop]: Abstraction has 37489 states and 52600 transitions. [2021-11-02 23:16:29,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 37489 states and 52600 transitions. [2021-11-02 23:16:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-02 23:16:29,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:16:29,542 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:29,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 23:16:29,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:16:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -550967083, now seen corresponding path program 1 times [2021-11-02 23:16:29,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:29,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477244649] [2021-11-02 23:16:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:29,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:16:29,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:29,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477244649] [2021-11-02 23:16:29,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477244649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:29,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:29,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:29,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197419604] [2021-11-02 23:16:29,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:29,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:29,734 INFO L87 Difference]: Start difference. First operand 37489 states and 52600 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:32,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:16:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:54,734 INFO L93 Difference]: Finished difference Result 89422 states and 125603 transitions. [2021-11-02 23:16:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:54,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-02 23:16:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:54,855 INFO L225 Difference]: With dead ends: 89422 [2021-11-02 23:16:54,856 INFO L226 Difference]: Without dead ends: 51956 [2021-11-02 23:16:55,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:55,049 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 4320 mSDsluCounter, 5819 mSDsCounter, 0 mSdLazyCounter, 15924 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21114.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.98ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 15924 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23701.33ms IncrementalHoareTripleChecker+Time [2021-11-02 23:16:55,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4320 Valid, 80 Invalid, 15939 Unknown, 0 Unchecked, 28.98ms Time], IncrementalHoareTripleChecker [14 Valid, 15924 Invalid, 1 Unknown, 0 Unchecked, 23701.33ms Time] [2021-11-02 23:16:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51956 states. [2021-11-02 23:16:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51956 to 51786. [2021-11-02 23:16:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51786 states, 51386 states have (on average 1.402658311602382) internal successors, (72077), 51550 states have internal predecessors, (72077), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:16:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51786 states to 51786 states and 72837 transitions. [2021-11-02 23:16:56,088 INFO L78 Accepts]: Start accepts. Automaton has 51786 states and 72837 transitions. Word has length 132 [2021-11-02 23:16:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:56,089 INFO L470 AbstractCegarLoop]: Abstraction has 51786 states and 72837 transitions. [2021-11-02 23:16:56,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 51786 states and 72837 transitions. [2021-11-02 23:16:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 23:16:56,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:16:56,094 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:56,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 23:16:56,094 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:16:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1977646117, now seen corresponding path program 1 times [2021-11-02 23:16:56,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:56,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413337211] [2021-11-02 23:16:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:56,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:16:56,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:56,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413337211] [2021-11-02 23:16:56,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413337211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:56,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:56,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:16:56,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593959357] [2021-11-02 23:16:56,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:16:56,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:16:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:16:56,235 INFO L87 Difference]: Start difference. First operand 51786 states and 72837 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:58,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:17:01,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:17:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:36,735 INFO L93 Difference]: Finished difference Result 167635 states and 235366 transitions. [2021-11-02 23:17:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:17:36,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-02 23:17:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:37,040 INFO L225 Difference]: With dead ends: 167635 [2021-11-02 23:17:37,040 INFO L226 Difference]: Without dead ends: 115872 [2021-11-02 23:17:37,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.94ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:17:37,135 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8565 mSDsluCounter, 12504 mSDsCounter, 0 mSdLazyCounter, 22487 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34011.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8570 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 22500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.81ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22487 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37963.15ms IncrementalHoareTripleChecker+Time [2021-11-02 23:17:37,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8570 Valid, 108 Invalid, 22500 Unknown, 0 Unchecked, 67.81ms Time], IncrementalHoareTripleChecker [11 Valid, 22487 Invalid, 2 Unknown, 0 Unchecked, 37963.15ms Time] [2021-11-02 23:17:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115872 states. [2021-11-02 23:17:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115872 to 51806. [2021-11-02 23:17:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51806 states, 51406 states have (on average 1.402501653503482) internal successors, (72097), 51570 states have internal predecessors, (72097), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:17:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51806 states to 51806 states and 72857 transitions. [2021-11-02 23:17:38,750 INFO L78 Accepts]: Start accepts. Automaton has 51806 states and 72857 transitions. Word has length 137 [2021-11-02 23:17:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:38,751 INFO L470 AbstractCegarLoop]: Abstraction has 51806 states and 72857 transitions. [2021-11-02 23:17:38,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 51806 states and 72857 transitions. [2021-11-02 23:17:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 23:17:38,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:17:38,755 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:38,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 23:17:38,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:17:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1797920898, now seen corresponding path program 1 times [2021-11-02 23:17:38,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:38,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813189575] [2021-11-02 23:17:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:38,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:17:38,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:38,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813189575] [2021-11-02 23:17:38,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813189575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:38,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:38,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:17:38,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251715679] [2021-11-02 23:17:38,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:17:38,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:17:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:17:38,917 INFO L87 Difference]: Start difference. First operand 51806 states and 72857 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:18:34,652 INFO L93 Difference]: Finished difference Result 198243 states and 278329 transitions. [2021-11-02 23:18:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:18:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 23:18:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:18:35,015 INFO L225 Difference]: With dead ends: 198243 [2021-11-02 23:18:35,016 INFO L226 Difference]: Without dead ends: 146460 [2021-11-02 23:18:35,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:18:35,099 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 12483 mSDsluCounter, 20395 mSDsCounter, 0 mSdLazyCounter, 34378 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46231.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12493 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 34390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.08ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52031.58ms IncrementalHoareTripleChecker+Time [2021-11-02 23:18:35,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12493 Valid, 133 Invalid, 34390 Unknown, 0 Unchecked, 106.08ms Time], IncrementalHoareTripleChecker [12 Valid, 34378 Invalid, 0 Unknown, 0 Unchecked, 52031.58ms Time] [2021-11-02 23:18:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146460 states. [2021-11-02 23:18:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146460 to 51826. [2021-11-02 23:18:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51826 states, 51426 states have (on average 1.4023451172558627) internal successors, (72117), 51590 states have internal predecessors, (72117), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:18:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51826 states to 51826 states and 72877 transitions. [2021-11-02 23:18:37,024 INFO L78 Accepts]: Start accepts. Automaton has 51826 states and 72877 transitions. Word has length 144 [2021-11-02 23:18:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:18:37,024 INFO L470 AbstractCegarLoop]: Abstraction has 51826 states and 72877 transitions. [2021-11-02 23:18:37,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 51826 states and 72877 transitions. [2021-11-02 23:18:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 23:18:37,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:18:37,029 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:18:37,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 23:18:37,029 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:18:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:18:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 419709500, now seen corresponding path program 1 times [2021-11-02 23:18:37,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:18:37,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327582882] [2021-11-02 23:18:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:18:37,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:18:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:18:37,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:37,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327582882] [2021-11-02 23:18:37,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327582882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:18:37,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:18:37,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:18:37,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353129968] [2021-11-02 23:18:37,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:18:37,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:18:37,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:18:37,174 INFO L87 Difference]: Start difference. First operand 51826 states and 72877 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:56,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:18:56,302 INFO L93 Difference]: Finished difference Result 103659 states and 145790 transitions. [2021-11-02 23:18:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:18:56,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 23:18:56,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:18:56,416 INFO L225 Difference]: With dead ends: 103659 [2021-11-02 23:18:56,416 INFO L226 Difference]: Without dead ends: 51856 [2021-11-02 23:18:56,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:18:56,483 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 6113 mSDsCounter, 0 mSdLazyCounter, 12203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15615.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.10ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17583.83ms IncrementalHoareTripleChecker+Time [2021-11-02 23:18:56,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 12207 Unknown, 0 Unchecked, 27.10ms Time], IncrementalHoareTripleChecker [4 Valid, 12203 Invalid, 0 Unknown, 0 Unchecked, 17583.83ms Time] [2021-11-02 23:18:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51856 states. [2021-11-02 23:18:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51856 to 51856. [2021-11-02 23:18:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51856 states, 51456 states have (on average 1.402110541044776) internal successors, (72147), 51620 states have internal predecessors, (72147), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:18:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51856 states to 51856 states and 72907 transitions. [2021-11-02 23:18:57,967 INFO L78 Accepts]: Start accepts. Automaton has 51856 states and 72907 transitions. Word has length 144 [2021-11-02 23:18:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:18:57,968 INFO L470 AbstractCegarLoop]: Abstraction has 51856 states and 72907 transitions. [2021-11-02 23:18:57,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 51856 states and 72907 transitions. [2021-11-02 23:18:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 23:18:57,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:18:57,972 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:18:57,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 23:18:57,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:18:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:18:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 446775102, now seen corresponding path program 1 times [2021-11-02 23:18:57,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:18:57,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943991940] [2021-11-02 23:18:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:18:57,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:18:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:18:58,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:58,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943991940] [2021-11-02 23:18:58,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943991940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:18:58,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:18:58,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:18:58,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061933820] [2021-11-02 23:18:58,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:18:58,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:18:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:18:58,163 INFO L87 Difference]: Start difference. First operand 51856 states and 72907 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:00,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:19:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:24,871 INFO L93 Difference]: Finished difference Result 135117 states and 189873 transitions. [2021-11-02 23:19:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:19:24,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 23:19:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:25,028 INFO L225 Difference]: With dead ends: 135117 [2021-11-02 23:19:25,029 INFO L226 Difference]: Without dead ends: 83284 [2021-11-02 23:19:25,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:19:25,102 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 4196 mSDsluCounter, 6004 mSDsCounter, 0 mSdLazyCounter, 12183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21478.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 12185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24054.30ms IncrementalHoareTripleChecker+Time [2021-11-02 23:19:25,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 61 Invalid, 12185 Unknown, 0 Unchecked, 30.93ms Time], IncrementalHoareTripleChecker [2 Valid, 12183 Invalid, 0 Unknown, 0 Unchecked, 24054.30ms Time] [2021-11-02 23:19:25,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83284 states. [2021-11-02 23:19:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83284 to 51886. [2021-11-02 23:19:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51886 states, 51486 states have (on average 1.401876238200676) internal successors, (72177), 51650 states have internal predecessors, (72177), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:19:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51886 states to 51886 states and 72937 transitions. [2021-11-02 23:19:26,767 INFO L78 Accepts]: Start accepts. Automaton has 51886 states and 72937 transitions. Word has length 144 [2021-11-02 23:19:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:26,767 INFO L470 AbstractCegarLoop]: Abstraction has 51886 states and 72937 transitions. [2021-11-02 23:19:26,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 51886 states and 72937 transitions. [2021-11-02 23:19:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 23:19:26,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:19:26,772 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:26,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 23:19:26,772 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:19:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash 818994843, now seen corresponding path program 1 times [2021-11-02 23:19:26,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:26,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930049907] [2021-11-02 23:19:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:26,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:19:26,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:26,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930049907] [2021-11-02 23:19:26,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930049907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:26,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:26,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:19:26,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23076514] [2021-11-02 23:19:26,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:26,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:19:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:26,925 INFO L87 Difference]: Start difference. First operand 51886 states and 72937 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:30,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:19:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:52,404 INFO L93 Difference]: Finished difference Result 103839 states and 145970 transitions. [2021-11-02 23:19:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:19:52,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 23:19:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:52,517 INFO L225 Difference]: With dead ends: 103839 [2021-11-02 23:19:52,517 INFO L226 Difference]: Without dead ends: 51976 [2021-11-02 23:19:52,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:19:52,591 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 12223 mSDsCounter, 0 mSdLazyCounter, 18303 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21022.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.22ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23624.68ms IncrementalHoareTripleChecker+Time [2021-11-02 23:19:52,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 84 Invalid, 18312 Unknown, 0 Unchecked, 31.22ms Time], IncrementalHoareTripleChecker [9 Valid, 18303 Invalid, 0 Unknown, 0 Unchecked, 23624.68ms Time] [2021-11-02 23:19:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51976 states. [2021-11-02 23:19:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51976 to 51946. [2021-11-02 23:19:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51946 states, 51546 states have (on average 1.4014084507042253) internal successors, (72237), 51710 states have internal predecessors, (72237), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:19:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51946 states to 51946 states and 72997 transitions. [2021-11-02 23:19:54,069 INFO L78 Accepts]: Start accepts. Automaton has 51946 states and 72997 transitions. Word has length 144 [2021-11-02 23:19:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:54,069 INFO L470 AbstractCegarLoop]: Abstraction has 51946 states and 72997 transitions. [2021-11-02 23:19:54,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51946 states and 72997 transitions. [2021-11-02 23:19:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 23:19:54,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:19:54,074 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:19:54,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 23:19:54,074 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:19:54,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1059234589, now seen corresponding path program 1 times [2021-11-02 23:19:54,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:54,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299900106] [2021-11-02 23:19:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:54,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:19:54,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:54,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299900106] [2021-11-02 23:19:54,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299900106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:19:54,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:19:54,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:19:54,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407050552] [2021-11-02 23:19:54,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:19:54,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:19:54,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:19:54,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:19:54,229 INFO L87 Difference]: Start difference. First operand 51946 states and 72997 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:56,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:19:59,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:20:01,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:20:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:23,352 INFO L93 Difference]: Finished difference Result 104049 states and 146180 transitions. [2021-11-02 23:20:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:20:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 23:20:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:23,544 INFO L225 Difference]: With dead ends: 104049 [2021-11-02 23:20:23,544 INFO L226 Difference]: Without dead ends: 52126 [2021-11-02 23:20:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:20:23,598 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 12217 mSDsCounter, 0 mSdLazyCounter, 18301 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24751.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.09ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18301 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27355.31ms IncrementalHoareTripleChecker+Time [2021-11-02 23:20:23,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 84 Invalid, 18312 Unknown, 0 Unchecked, 30.09ms Time], IncrementalHoareTripleChecker [9 Valid, 18301 Invalid, 2 Unknown, 0 Unchecked, 27355.31ms Time] [2021-11-02 23:20:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52126 states. [2021-11-02 23:20:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52126 to 52006. [2021-11-02 23:20:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52006 states, 51606 states have (on average 1.4009417509591908) internal successors, (72297), 51770 states have internal predecessors, (72297), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:20:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52006 states to 52006 states and 73057 transitions. [2021-11-02 23:20:24,957 INFO L78 Accepts]: Start accepts. Automaton has 52006 states and 73057 transitions. Word has length 144 [2021-11-02 23:20:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:24,957 INFO L470 AbstractCegarLoop]: Abstraction has 52006 states and 73057 transitions. [2021-11-02 23:20:24,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 52006 states and 73057 transitions. [2021-11-02 23:20:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 23:20:24,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:20:24,962 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:20:24,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 23:20:24,962 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:20:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1396511, now seen corresponding path program 1 times [2021-11-02 23:20:24,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:20:24,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333770254] [2021-11-02 23:20:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:20:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:20:25,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:20:25,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333770254] [2021-11-02 23:20:25,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333770254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:20:25,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:20:25,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:20:25,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367615971] [2021-11-02 23:20:25,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:20:25,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:20:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:20:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:20:25,314 INFO L87 Difference]: Start difference. First operand 52006 states and 73057 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:13,286 INFO L93 Difference]: Finished difference Result 167475 states and 235156 transitions. [2021-11-02 23:21:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:21:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-02 23:21:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:13,559 INFO L225 Difference]: With dead ends: 167475 [2021-11-02 23:21:13,559 INFO L226 Difference]: Without dead ends: 115492 [2021-11-02 23:21:13,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:21:13,643 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 12301 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 26633 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39336.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12306 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.23ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43966.89ms IncrementalHoareTripleChecker+Time [2021-11-02 23:21:13,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12306 Valid, 114 Invalid, 26643 Unknown, 0 Unchecked, 101.23ms Time], IncrementalHoareTripleChecker [10 Valid, 26633 Invalid, 0 Unknown, 0 Unchecked, 43966.89ms Time] [2021-11-02 23:21:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115492 states. [2021-11-02 23:21:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115492 to 52026. [2021-11-02 23:21:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52026 states, 51626 states have (on average 1.4007864254445435) internal successors, (72317), 51790 states have internal predecessors, (72317), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:21:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52026 states to 52026 states and 73077 transitions. [2021-11-02 23:21:15,637 INFO L78 Accepts]: Start accepts. Automaton has 52026 states and 73077 transitions. Word has length 144 [2021-11-02 23:21:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:15,638 INFO L470 AbstractCegarLoop]: Abstraction has 52026 states and 73077 transitions. [2021-11-02 23:21:15,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 52026 states and 73077 transitions. [2021-11-02 23:21:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 23:21:15,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:21:15,641 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:15,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 23:21:15,642 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:21:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1799987637, now seen corresponding path program 1 times [2021-11-02 23:21:15,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:15,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282032651] [2021-11-02 23:21:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:15,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:21:15,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:15,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282032651] [2021-11-02 23:21:15,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282032651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:15,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:15,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:21:15,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115959698] [2021-11-02 23:21:15,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:21:15,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:21:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:15,881 INFO L87 Difference]: Start difference. First operand 52026 states and 73077 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:19,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:22:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:22:13,199 INFO L93 Difference]: Finished difference Result 199063 states and 279389 transitions. [2021-11-02 23:22:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:22:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-02 23:22:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:22:13,545 INFO L225 Difference]: With dead ends: 199063 [2021-11-02 23:22:13,546 INFO L226 Difference]: Without dead ends: 147060 [2021-11-02 23:22:13,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:22:13,641 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 12342 mSDsluCounter, 20361 mSDsCounter, 0 mSdLazyCounter, 34479 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46291.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12352 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 34490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.04ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51779.71ms IncrementalHoareTripleChecker+Time [2021-11-02 23:22:13,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12352 Valid, 133 Invalid, 34490 Unknown, 0 Unchecked, 92.04ms Time], IncrementalHoareTripleChecker [11 Valid, 34479 Invalid, 0 Unknown, 0 Unchecked, 51779.71ms Time] [2021-11-02 23:22:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147060 states. [2021-11-02 23:22:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147060 to 52046. [2021-11-02 23:22:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52046 states, 51646 states have (on average 1.4006312202300275) internal successors, (72337), 51810 states have internal predecessors, (72337), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:22:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52046 states to 52046 states and 73097 transitions. [2021-11-02 23:22:16,019 INFO L78 Accepts]: Start accepts. Automaton has 52046 states and 73097 transitions. Word has length 145 [2021-11-02 23:22:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:22:16,019 INFO L470 AbstractCegarLoop]: Abstraction has 52046 states and 73097 transitions. [2021-11-02 23:22:16,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 52046 states and 73097 transitions. [2021-11-02 23:22:16,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-02 23:22:16,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:22:16,024 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:22:16,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 23:22:16,024 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:22:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:22:16,025 INFO L85 PathProgramCache]: Analyzing trace with hash 272797706, now seen corresponding path program 1 times [2021-11-02 23:22:16,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:22:16,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18356596] [2021-11-02 23:22:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:22:16,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:22:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:22:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:22:16,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:22:16,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18356596] [2021-11-02 23:22:16,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18356596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:22:16,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:22:16,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:22:16,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763895772] [2021-11-02 23:22:16,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:22:16,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:22:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:22:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:22:16,248 INFO L87 Difference]: Start difference. First operand 52046 states and 73097 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:22:52,864 INFO L93 Difference]: Finished difference Result 120916 states and 169587 transitions. [2021-11-02 23:22:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:22:52,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-02 23:22:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:22:53,012 INFO L225 Difference]: With dead ends: 120916 [2021-11-02 23:22:53,013 INFO L226 Difference]: Without dead ends: 68893 [2021-11-02 23:22:53,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:22:53,086 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 6650 mSDsluCounter, 14274 mSDsCounter, 0 mSdLazyCounter, 24633 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30352.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6650 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 24640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.35ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33970.29ms IncrementalHoareTripleChecker+Time [2021-11-02 23:22:53,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6650 Valid, 126 Invalid, 24640 Unknown, 0 Unchecked, 58.35ms Time], IncrementalHoareTripleChecker [7 Valid, 24633 Invalid, 0 Unknown, 0 Unchecked, 33970.29ms Time] [2021-11-02 23:22:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68893 states. [2021-11-02 23:22:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68893 to 52066. [2021-11-02 23:22:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52066 states, 51666 states have (on average 1.4004761351759378) internal successors, (72357), 51830 states have internal predecessors, (72357), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:22:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52066 states to 52066 states and 73117 transitions. [2021-11-02 23:22:55,004 INFO L78 Accepts]: Start accepts. Automaton has 52066 states and 73117 transitions. Word has length 151 [2021-11-02 23:22:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:22:55,004 INFO L470 AbstractCegarLoop]: Abstraction has 52066 states and 73117 transitions. [2021-11-02 23:22:55,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 52066 states and 73117 transitions. [2021-11-02 23:22:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 23:22:55,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:22:55,008 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:22:55,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 23:22:55,008 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:22:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:22:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1654405203, now seen corresponding path program 1 times [2021-11-02 23:22:55,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:22:55,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023578409] [2021-11-02 23:22:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:22:55,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:22:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:22:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:22:55,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:22:55,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023578409] [2021-11-02 23:22:55,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023578409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:22:55,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:22:55,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:22:55,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081318089] [2021-11-02 23:22:55,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:22:55,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:22:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:22:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:22:55,160 INFO L87 Difference]: Start difference. First operand 52066 states and 73117 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:56,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:23:23,454 INFO L93 Difference]: Finished difference Result 104189 states and 146310 transitions. [2021-11-02 23:23:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:23:23,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-02 23:23:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:23:23,626 INFO L225 Difference]: With dead ends: 104189 [2021-11-02 23:23:23,626 INFO L226 Difference]: Without dead ends: 52146 [2021-11-02 23:23:23,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:23:23,685 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 18313 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23445.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.18ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26182.12ms IncrementalHoareTripleChecker+Time [2021-11-02 23:23:23,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 18318 Unknown, 0 Unchecked, 37.18ms Time], IncrementalHoareTripleChecker [5 Valid, 18313 Invalid, 0 Unknown, 0 Unchecked, 26182.12ms Time] [2021-11-02 23:23:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52146 states. [2021-11-02 23:23:25,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52146 to 52106. [2021-11-02 23:23:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52106 states, 51706 states have (on average 1.400166324991297) internal successors, (72397), 51870 states have internal predecessors, (72397), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:23:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52106 states to 52106 states and 73157 transitions. [2021-11-02 23:23:25,473 INFO L78 Accepts]: Start accepts. Automaton has 52106 states and 73157 transitions. Word has length 152 [2021-11-02 23:23:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:23:25,473 INFO L470 AbstractCegarLoop]: Abstraction has 52106 states and 73157 transitions. [2021-11-02 23:23:25,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:23:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 52106 states and 73157 transitions. [2021-11-02 23:23:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 23:23:25,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:23:25,477 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:23:25,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 23:23:25,477 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:23:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:23:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1708798101, now seen corresponding path program 1 times [2021-11-02 23:23:25,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:23:25,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649390447] [2021-11-02 23:23:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:23:25,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:23:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:23:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:23:25,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:23:25,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649390447] [2021-11-02 23:23:25,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649390447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:23:25,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:23:25,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:23:25,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086321299] [2021-11-02 23:23:25,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:23:25,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:23:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:23:25,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:23:25,830 INFO L87 Difference]: Start difference. First operand 52106 states and 73157 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:23:28,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:30,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:32,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:24:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:24:12,157 INFO L93 Difference]: Finished difference Result 121106 states and 169777 transitions. [2021-11-02 23:24:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:24:12,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-02 23:24:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:24:12,304 INFO L225 Difference]: With dead ends: 121106 [2021-11-02 23:24:12,304 INFO L226 Difference]: Without dead ends: 69023 [2021-11-02 23:24:12,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.51ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:24:12,375 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9094 mSDsluCounter, 18494 mSDsCounter, 0 mSdLazyCounter, 24875 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39133.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9094 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 24889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.69ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24875 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43187.98ms IncrementalHoareTripleChecker+Time [2021-11-02 23:24:12,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9094 Valid, 139 Invalid, 24889 Unknown, 0 Unchecked, 80.69ms Time], IncrementalHoareTripleChecker [11 Valid, 24875 Invalid, 3 Unknown, 0 Unchecked, 43187.98ms Time] [2021-11-02 23:24:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69023 states. [2021-11-02 23:24:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69023 to 52116. [2021-11-02 23:24:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52116 states, 51716 states have (on average 1.400088947327713) internal successors, (72407), 51880 states have internal predecessors, (72407), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:24:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52116 states to 52116 states and 73167 transitions. [2021-11-02 23:24:14,320 INFO L78 Accepts]: Start accepts. Automaton has 52116 states and 73167 transitions. Word has length 152 [2021-11-02 23:24:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:24:14,320 INFO L470 AbstractCegarLoop]: Abstraction has 52116 states and 73167 transitions. [2021-11-02 23:24:14,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:24:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 52116 states and 73167 transitions. [2021-11-02 23:24:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 23:24:14,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:24:14,322 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:24:14,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 23:24:14,322 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:24:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:24:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash 740802029, now seen corresponding path program 1 times [2021-11-02 23:24:14,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:24:14,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522039297] [2021-11-02 23:24:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:24:14,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:24:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:24:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:24:14,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:24:14,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522039297] [2021-11-02 23:24:14,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522039297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:24:14,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:24:14,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:24:14,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123948345] [2021-11-02 23:24:14,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:24:14,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:24:14,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:24:14,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:24:14,580 INFO L87 Difference]: Start difference. First operand 52116 states and 73167 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:24:18,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:25:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:25:14,994 INFO L93 Difference]: Finished difference Result 200843 states and 281619 transitions. [2021-11-02 23:25:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:25:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-02 23:25:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:25:15,363 INFO L225 Difference]: With dead ends: 200843 [2021-11-02 23:25:15,363 INFO L226 Difference]: Without dead ends: 148750 [2021-11-02 23:25:15,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.72ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:25:15,459 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 21300 mSDsluCounter, 23097 mSDsCounter, 0 mSdLazyCounter, 33467 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47484.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21305 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 33540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.28ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 33467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53000.74ms IncrementalHoareTripleChecker+Time [2021-11-02 23:25:15,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21305 Valid, 154 Invalid, 33540 Unknown, 0 Unchecked, 122.28ms Time], IncrementalHoareTripleChecker [73 Valid, 33467 Invalid, 0 Unknown, 0 Unchecked, 53000.74ms Time] [2021-11-02 23:25:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148750 states. [2021-11-02 23:25:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148750 to 52146. [2021-11-02 23:25:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52146 states, 51746 states have (on average 1.3998569937772969) internal successors, (72437), 51910 states have internal predecessors, (72437), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-02 23:25:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52146 states to 52146 states and 73197 transitions. [2021-11-02 23:25:18,288 INFO L78 Accepts]: Start accepts. Automaton has 52146 states and 73197 transitions. Word has length 152 [2021-11-02 23:25:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:25:18,289 INFO L470 AbstractCegarLoop]: Abstraction has 52146 states and 73197 transitions. [2021-11-02 23:25:18,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:25:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 52146 states and 73197 transitions. [2021-11-02 23:25:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-02 23:25:18,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:25:18,290 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:25:18,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 23:25:18,291 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-02 23:25:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:25:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 384159441, now seen corresponding path program 1 times [2021-11-02 23:25:18,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:25:18,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670730140] [2021-11-02 23:25:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:25:18,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:25:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:25:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 23:25:18,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:25:18,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670730140] [2021-11-02 23:25:18,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670730140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:25:18,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974972281] [2021-11-02 23:25:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:25:18,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:25:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:25:18,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:25:18,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 23:25:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:25:19,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 23:25:19,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:25:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 23:25:19,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 23:25:19,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974972281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:25:19,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:25:19,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-02 23:25:19,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089541422] [2021-11-02 23:25:19,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:25:19,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:25:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:25:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:25:19,701 INFO L87 Difference]: Start difference. First operand 52146 states and 73197 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15