./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 173e3943 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-dev-173e394 [2021-11-06 18:00:38,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:00:38,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:00:38,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:00:38,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:00:38,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:00:38,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:00:38,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:00:38,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:00:38,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:00:38,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:00:38,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:00:38,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:00:38,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:00:38,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:00:38,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:00:38,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:00:38,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:00:38,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:00:38,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:00:38,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:00:38,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:00:38,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:00:38,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:00:38,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:00:38,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:00:38,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:00:38,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:00:38,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:00:38,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:00:38,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:00:38,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:00:38,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:00:38,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:00:38,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:00:38,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:00:38,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:00:38,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:00:38,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:00:38,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:00:38,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:00:38,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:00:38,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:00:38,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:00:38,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:00:38,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:00:38,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:00:38,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:00:38,954 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:00:38,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:00:38,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:00:38,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:00:38,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:00:38,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:00:38,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:00:38,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:00:38,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:00:38,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:00:38,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:00:38,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:00:38,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:00:38,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:00:38,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:00:38,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:00:38,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:00:38,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:00:38,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:00:38,958 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:00:38,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:00:38,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:00:38,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:00:38,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2021-11-06 18:00:39,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:00:39,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:00:39,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:00:39,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:00:39,156 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:00:39,157 INFO L432 ainManager$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 [2021-11-06 18:00:39,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e48ebf8/f43d334adb564b50a0a67c229f3e598c/FLAG99960242a [2021-11-06 18:00:39,788 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:00:39,788 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 [2021-11-06 18:00:39,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e48ebf8/f43d334adb564b50a0a67c229f3e598c/FLAG99960242a [2021-11-06 18:00:39,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e48ebf8/f43d334adb564b50a0a67c229f3e598c [2021-11-06 18:00:40,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:00:40,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:00:40,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:00:40,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:00:40,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:00:40,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:00:39" (1/1) ... [2021-11-06 18:00:40,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a880142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:40, skipping insertion in model container [2021-11-06 18:00:40,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:00:39" (1/1) ... [2021-11-06 18:00:40,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:00:40,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:00:41,221 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] [2021-11-06 18:00:41,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:00:41,281 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:00:41,515 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] [2021-11-06 18:00:41,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:00:41,576 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:00:41,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41 WrapperNode [2021-11-06 18:00:41,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:00:41,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:00:41,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:00:41,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:00:41,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:41,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:00:42,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:00:42,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:00:42,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:00:42,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:00:42,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:00:42,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:00:42,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:00:42,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (1/1) ... [2021-11-06 18:00:42,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:00:42,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:00:42,825 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) [2021-11-06 18:00:42,844 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 [2021-11-06 18:00:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-11-06 18:00:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-11-06 18:00:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:00:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:00:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:00:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-11-06 18:00:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-11-06 18:00:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:00:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:00:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-11-06 18:00:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-11-06 18:00:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:00:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-11-06 18:00:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-11-06 18:00:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:00:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:00:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 18:00:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 18:00:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:00:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:00:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:00:55,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:00:55,857 INFO L299 CfgBuilder]: Removed 3060 assume(true) statements. [2021-11-06 18:00:55,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:00:55 BoogieIcfgContainer [2021-11-06 18:00:55,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:00:55,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:00:55,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:00:55,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:00:55,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:00:39" (1/3) ... [2021-11-06 18:00:55,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee09220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:00:55, skipping insertion in model container [2021-11-06 18:00:55,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:41" (2/3) ... [2021-11-06 18:00:55,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee09220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:00:55, skipping insertion in model container [2021-11-06 18:00:55,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:00:55" (3/3) ... [2021-11-06 18:00:55,867 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-06 18:00:55,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:00:55,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 120 error locations. [2021-11-06 18:00:55,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:00:55,923 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 [2021-11-06 18:00:55,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 120 error locations. [2021-11-06 18:00:55,987 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) [2021-11-06 18:00:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 18:00:55,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:55,995 INFO L513 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] [2021-11-06 18:00:55,995 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)] === [2021-11-06 18:00:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1622129590, now seen corresponding path program 1 times [2021-11-06 18:00:56,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:00:56,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100682852] [2021-11-06 18:00:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:56,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:00:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:00:56,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:00:56,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100682852] [2021-11-06 18:00:56,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100682852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:56,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:56,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:00:56,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719244537] [2021-11-06 18:00:56,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 18:00:56,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:00:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 18:00:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:00:56,449 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) [2021-11-06 18:00:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:56,567 INFO L93 Difference]: Finished difference Result 9052 states and 12721 transitions. [2021-11-06 18:00:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 18:00:56,568 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 [2021-11-06 18:00:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:56,595 INFO L225 Difference]: With dead ends: 9052 [2021-11-06 18:00:56,595 INFO L226 Difference]: Without dead ends: 4517 [2021-11-06 18:00:56,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:00:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2021-11-06 18:00:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4517. [2021-11-06 18:00:56,737 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) [2021-11-06 18:00:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6131 transitions. [2021-11-06 18:00:56,759 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6131 transitions. Word has length 40 [2021-11-06 18:00:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:56,759 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 6131 transitions. [2021-11-06 18:00:56,760 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) [2021-11-06 18:00:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6131 transitions. [2021-11-06 18:00:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 18:00:56,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:56,762 INFO L513 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] [2021-11-06 18:00:56,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:00:56,763 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)] === [2021-11-06 18:00:56,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash 423605326, now seen corresponding path program 1 times [2021-11-06 18:00:56,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:00:56,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853589568] [2021-11-06 18:00:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:56,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:00:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:00:57,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:00:57,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853589568] [2021-11-06 18:00:57,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853589568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:57,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:57,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:00:57,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392204607] [2021-11-06 18:00:57,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:00:57,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:00:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:00:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:57,064 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) [2021-11-06 18:00:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:57,348 INFO L93 Difference]: Finished difference Result 12843 states and 17473 transitions. [2021-11-06 18:00:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:00:57,348 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 [2021-11-06 18:00:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:57,377 INFO L225 Difference]: With dead ends: 12843 [2021-11-06 18:00:57,377 INFO L226 Difference]: Without dead ends: 8345 [2021-11-06 18:00:57,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2021-11-06 18:00:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 8145. [2021-11-06 18:00:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8145 states, 7985 states have (on average 1.398246712586099) internal successors, (11165), 8110 states have internal predecessors, (11165), 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) [2021-11-06 18:00:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8145 states to 8145 states and 11235 transitions. [2021-11-06 18:00:57,555 INFO L78 Accepts]: Start accepts. Automaton has 8145 states and 11235 transitions. Word has length 40 [2021-11-06 18:00:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:57,555 INFO L470 AbstractCegarLoop]: Abstraction has 8145 states and 11235 transitions. [2021-11-06 18:00:57,556 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) [2021-11-06 18:00:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8145 states and 11235 transitions. [2021-11-06 18:00:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 18:00:57,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:57,560 INFO L513 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] [2021-11-06 18:00:57,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:00:57,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:00:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash 916297545, now seen corresponding path program 1 times [2021-11-06 18:00:57,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:00:57,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729487950] [2021-11-06 18:00:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:57,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:00:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:00:57,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:00:57,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729487950] [2021-11-06 18:00:57,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729487950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:57,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:57,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:00:57,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718292956] [2021-11-06 18:00:57,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:00:57,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:00:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:00:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:57,813 INFO L87 Difference]: Start difference. First operand 8145 states and 11235 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) [2021-11-06 18:00:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:58,100 INFO L93 Difference]: Finished difference Result 19603 states and 27017 transitions. [2021-11-06 18:00:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:00:58,101 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 41 [2021-11-06 18:00:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:58,138 INFO L225 Difference]: With dead ends: 19603 [2021-11-06 18:00:58,139 INFO L226 Difference]: Without dead ends: 11477 [2021-11-06 18:00:58,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2021-11-06 18:00:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 11277. [2021-11-06 18:00:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11277 states, 11097 states have (on average 1.3983959628728486) internal successors, (15518), 11225 states have internal predecessors, (15518), 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) [2021-11-06 18:00:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 15644 transitions. [2021-11-06 18:00:58,529 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 15644 transitions. Word has length 41 [2021-11-06 18:00:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:58,530 INFO L470 AbstractCegarLoop]: Abstraction has 11277 states and 15644 transitions. [2021-11-06 18:00:58,530 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) [2021-11-06 18:00:58,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 15644 transitions. [2021-11-06 18:00:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 18:00:58,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:58,532 INFO L513 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, 1] [2021-11-06 18:00:58,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:00:58,533 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:00:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash -990111858, now seen corresponding path program 1 times [2021-11-06 18:00:58,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:00:58,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559735130] [2021-11-06 18:00:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:58,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:00:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:00:58,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:00:58,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559735130] [2021-11-06 18:00:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559735130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:58,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:58,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:00:58,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929238966] [2021-11-06 18:00:58,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:00:58,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:00:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:00:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:58,729 INFO L87 Difference]: Start difference. First operand 11277 states and 15644 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) [2021-11-06 18:00:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:59,039 INFO L93 Difference]: Finished difference Result 25321 states and 35133 transitions. [2021-11-06 18:00:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:00:59,039 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 42 [2021-11-06 18:00:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:59,085 INFO L225 Difference]: With dead ends: 25321 [2021-11-06 18:00:59,086 INFO L226 Difference]: Without dead ends: 14063 [2021-11-06 18:00:59,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14063 states. [2021-11-06 18:00:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14063 to 13863. [2021-11-06 18:00:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13863 states, 13663 states have (on average 1.3986679352997144) internal successors, (19110), 13794 states have internal predecessors, (19110), 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) [2021-11-06 18:00:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13863 states to 13863 states and 19306 transitions. [2021-11-06 18:00:59,393 INFO L78 Accepts]: Start accepts. Automaton has 13863 states and 19306 transitions. Word has length 42 [2021-11-06 18:00:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:59,393 INFO L470 AbstractCegarLoop]: Abstraction has 13863 states and 19306 transitions. [2021-11-06 18:00:59,394 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) [2021-11-06 18:00:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13863 states and 19306 transitions. [2021-11-06 18:00:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 18:00:59,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:59,395 INFO L513 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, 1, 1] [2021-11-06 18:00:59,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:00:59,395 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:00:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash 40739785, now seen corresponding path program 1 times [2021-11-06 18:00:59,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:00:59,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532198968] [2021-11-06 18:00:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:59,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:00:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:00:59,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:00:59,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532198968] [2021-11-06 18:00:59,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532198968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:59,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:59,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:00:59,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11733043] [2021-11-06 18:00:59,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:00:59,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:00:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:00:59,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:59,558 INFO L87 Difference]: Start difference. First operand 13863 states and 19306 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) [2021-11-06 18:00:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:59,912 INFO L93 Difference]: Finished difference Result 29945 states and 41765 transitions. [2021-11-06 18:00:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:00:59,913 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 43 [2021-11-06 18:00:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:00,094 INFO L225 Difference]: With dead ends: 29945 [2021-11-06 18:01:00,095 INFO L226 Difference]: Without dead ends: 16101 [2021-11-06 18:01:00,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16101 states. [2021-11-06 18:01:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16101 to 15901. [2021-11-06 18:01:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15681 states have (on average 1.3989541483323769) internal successors, (21937), 15815 states have internal predecessors, (21937), 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) [2021-11-06 18:01:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 22217 transitions. [2021-11-06 18:01:00,437 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 22217 transitions. Word has length 43 [2021-11-06 18:01:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:00,437 INFO L470 AbstractCegarLoop]: Abstraction has 15901 states and 22217 transitions. [2021-11-06 18:01:00,437 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) [2021-11-06 18:01:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 22217 transitions. [2021-11-06 18:01:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 18:01:00,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:00,443 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:01:00,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:01:00,443 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1145225261, now seen corresponding path program 1 times [2021-11-06 18:01:00,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:00,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719603196] [2021-11-06 18:01:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:00,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:01:00,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:00,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719603196] [2021-11-06 18:01:00,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719603196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:00,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:00,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:01:00,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461882046] [2021-11-06 18:01:00,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:01:00,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:01:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:00,572 INFO L87 Difference]: Start difference. First operand 15901 states and 22217 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-06 18:01:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:01,039 INFO L93 Difference]: Finished difference Result 45470 states and 63696 transitions. [2021-11-06 18:01:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:01:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-06 18:01:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:01,118 INFO L225 Difference]: With dead ends: 45470 [2021-11-06 18:01:01,118 INFO L226 Difference]: Without dead ends: 29588 [2021-11-06 18:01:01,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29588 states. [2021-11-06 18:01:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29588 to 23198. [2021-11-06 18:01:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23198 states, 22978 states have (on average 1.3991208982505006) internal successors, (32149), 23112 states have internal predecessors, (32149), 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) [2021-11-06 18:01:01,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23198 states to 23198 states and 32429 transitions. [2021-11-06 18:01:01,835 INFO L78 Accepts]: Start accepts. Automaton has 23198 states and 32429 transitions. Word has length 55 [2021-11-06 18:01:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:01,835 INFO L470 AbstractCegarLoop]: Abstraction has 23198 states and 32429 transitions. [2021-11-06 18:01:01,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-06 18:01:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 23198 states and 32429 transitions. [2021-11-06 18:01:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 18:01:01,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:01,839 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:01,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:01:01,839 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:01,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1788726958, now seen corresponding path program 1 times [2021-11-06 18:01:01,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:01,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135981215] [2021-11-06 18:01:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:01,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:01:01,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:01,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135981215] [2021-11-06 18:01:01,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135981215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:01,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:01,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:01:01,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105744715] [2021-11-06 18:01:01,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:01:01,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:01:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:01,985 INFO L87 Difference]: Start difference. First operand 23198 states and 32429 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-06 18:01:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:02,614 INFO L93 Difference]: Finished difference Result 60654 states and 84925 transitions. [2021-11-06 18:01:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:01:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-06 18:01:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:02,705 INFO L225 Difference]: With dead ends: 60654 [2021-11-06 18:01:02,705 INFO L226 Difference]: Without dead ends: 37475 [2021-11-06 18:01:02,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37475 states. [2021-11-06 18:01:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37475 to 37305. [2021-11-06 18:01:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37305 states, 36995 states have (on average 1.4027841600216246) internal successors, (51896), 37144 states have internal predecessors, (51896), 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) [2021-11-06 18:01:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37305 states to 37305 states and 52416 transitions. [2021-11-06 18:01:03,540 INFO L78 Accepts]: Start accepts. Automaton has 37305 states and 52416 transitions. Word has length 95 [2021-11-06 18:01:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:03,542 INFO L470 AbstractCegarLoop]: Abstraction has 37305 states and 52416 transitions. [2021-11-06 18:01:03,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-06 18:01:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 37305 states and 52416 transitions. [2021-11-06 18:01:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 18:01:03,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:03,547 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:03,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:01:03,547 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2141471772, now seen corresponding path program 1 times [2021-11-06 18:01:03,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:03,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593417586] [2021-11-06 18:01:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:03,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:03,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:03,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593417586] [2021-11-06 18:01:03,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593417586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:03,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:03,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:01:03,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133485526] [2021-11-06 18:01:03,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:01:03,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:03,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:01:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:01:03,726 INFO L87 Difference]: Start difference. First operand 37305 states and 52416 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-11-06 18:01:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:05,067 INFO L93 Difference]: Finished difference Result 121013 states and 169844 transitions. [2021-11-06 18:01:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:01:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 112 [2021-11-06 18:01:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:05,504 INFO L225 Difference]: With dead ends: 121013 [2021-11-06 18:01:05,504 INFO L226 Difference]: Without dead ends: 83727 [2021-11-06 18:01:05,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:01:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83727 states. [2021-11-06 18:01:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83727 to 37325. [2021-11-06 18:01:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37325 states, 37015 states have (on average 1.4025665270836147) internal successors, (51916), 37164 states have internal predecessors, (51916), 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) [2021-11-06 18:01:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37325 states to 37325 states and 52436 transitions. [2021-11-06 18:01:06,757 INFO L78 Accepts]: Start accepts. Automaton has 37325 states and 52436 transitions. Word has length 112 [2021-11-06 18:01:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:06,757 INFO L470 AbstractCegarLoop]: Abstraction has 37325 states and 52436 transitions. [2021-11-06 18:01:06,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-11-06 18:01:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 37325 states and 52436 transitions. [2021-11-06 18:01:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 18:01:06,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:06,763 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:06,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:01:06,765 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)] === [2021-11-06 18:01:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:06,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1311744405, now seen corresponding path program 1 times [2021-11-06 18:01:06,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:06,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906463650] [2021-11-06 18:01:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:06,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:01:06,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:06,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906463650] [2021-11-06 18:01:06,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906463650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:06,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:06,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:01:06,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047914964] [2021-11-06 18:01:06,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:01:06,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:01:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:06,914 INFO L87 Difference]: Start difference. First operand 37325 states and 52436 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-06 18:01:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:09,937 INFO L93 Difference]: Finished difference Result 89078 states and 125259 transitions. [2021-11-06 18:01:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:01:09,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 128 [2021-11-06 18:01:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:10,068 INFO L225 Difference]: With dead ends: 89078 [2021-11-06 18:01:10,069 INFO L226 Difference]: Without dead ends: 51772 [2021-11-06 18:01:10,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51772 states. [2021-11-06 18:01:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51772 to 51602. [2021-11-06 18:01:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51602 states, 51202 states have (on average 1.4041053083863912) internal successors, (71893), 51366 states have internal predecessors, (71893), 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) [2021-11-06 18:01:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51602 states to 51602 states and 72653 transitions. [2021-11-06 18:01:11,391 INFO L78 Accepts]: Start accepts. Automaton has 51602 states and 72653 transitions. Word has length 128 [2021-11-06 18:01:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:11,392 INFO L470 AbstractCegarLoop]: Abstraction has 51602 states and 72653 transitions. [2021-11-06 18:01:11,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-06 18:01:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 51602 states and 72653 transitions. [2021-11-06 18:01:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 18:01:11,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:11,400 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:11,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:01:11,400 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:11,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash 122702320, now seen corresponding path program 1 times [2021-11-06 18:01:11,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:11,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668935717] [2021-11-06 18:01:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:11,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:11,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:11,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668935717] [2021-11-06 18:01:11,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668935717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:11,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:11,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:01:11,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914938863] [2021-11-06 18:01:11,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:01:11,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:01:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:01:11,542 INFO L87 Difference]: Start difference. First operand 51602 states and 72653 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2021-11-06 18:01:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:13,685 INFO L93 Difference]: Finished difference Result 167031 states and 234762 transitions. [2021-11-06 18:01:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:01:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 131 [2021-11-06 18:01:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:13,989 INFO L225 Difference]: With dead ends: 167031 [2021-11-06 18:01:13,989 INFO L226 Difference]: Without dead ends: 115448 [2021-11-06 18:01:14,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:01:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115448 states. [2021-11-06 18:01:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115448 to 51622. [2021-11-06 18:01:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51622 states, 51222 states have (on average 1.4039475225489049) internal successors, (71913), 51386 states have internal predecessors, (71913), 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) [2021-11-06 18:01:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51622 states to 51622 states and 72673 transitions. [2021-11-06 18:01:15,917 INFO L78 Accepts]: Start accepts. Automaton has 51622 states and 72673 transitions. Word has length 131 [2021-11-06 18:01:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:15,917 INFO L470 AbstractCegarLoop]: Abstraction has 51622 states and 72673 transitions. [2021-11-06 18:01:15,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2021-11-06 18:01:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 51622 states and 72673 transitions. [2021-11-06 18:01:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:01:15,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:15,922 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:15,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:01:15,922 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1601958153, now seen corresponding path program 1 times [2021-11-06 18:01:15,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:15,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886135859] [2021-11-06 18:01:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:15,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:16,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:16,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886135859] [2021-11-06 18:01:16,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886135859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:16,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:16,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:01:16,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599700768] [2021-11-06 18:01:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:01:16,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:01:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:01:16,097 INFO L87 Difference]: Start difference. First operand 51622 states and 72673 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-06 18:01:19,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:19,168 INFO L93 Difference]: Finished difference Result 197699 states and 277785 transitions. [2021-11-06 18:01:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:01:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 138 [2021-11-06 18:01:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:19,555 INFO L225 Difference]: With dead ends: 197699 [2021-11-06 18:01:19,555 INFO L226 Difference]: Without dead ends: 146096 [2021-11-06 18:01:19,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:01:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146096 states. [2021-11-06 18:01:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146096 to 51642. [2021-11-06 18:01:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51642 states, 51242 states have (on average 1.4037898598805667) internal successors, (71933), 51406 states have internal predecessors, (71933), 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) [2021-11-06 18:01:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51642 states to 51642 states and 72693 transitions. [2021-11-06 18:01:21,718 INFO L78 Accepts]: Start accepts. Automaton has 51642 states and 72693 transitions. Word has length 138 [2021-11-06 18:01:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:21,718 INFO L470 AbstractCegarLoop]: Abstraction has 51642 states and 72693 transitions. [2021-11-06 18:01:21,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-06 18:01:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 51642 states and 72693 transitions. [2021-11-06 18:01:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:01:21,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:21,723 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:21,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:01:21,723 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1805786297, now seen corresponding path program 1 times [2021-11-06 18:01:21,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:21,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459225799] [2021-11-06 18:01:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:21,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:21,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:21,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459225799] [2021-11-06 18:01:21,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459225799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:21,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:21,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:01:21,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360892798] [2021-11-06 18:01:21,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:01:21,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:01:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:21,872 INFO L87 Difference]: Start difference. First operand 51642 states and 72693 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-06 18:01:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:23,291 INFO L93 Difference]: Finished difference Result 103295 states and 145426 transitions. [2021-11-06 18:01:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:01:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 138 [2021-11-06 18:01:23,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:23,398 INFO L225 Difference]: With dead ends: 103295 [2021-11-06 18:01:23,398 INFO L226 Difference]: Without dead ends: 51672 [2021-11-06 18:01:23,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51672 states. [2021-11-06 18:01:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51672 to 51672. [2021-11-06 18:01:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51672 states, 51272 states have (on average 1.403553596504915) internal successors, (71963), 51436 states have internal predecessors, (71963), 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) [2021-11-06 18:01:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51672 states to 51672 states and 72723 transitions. [2021-11-06 18:01:24,724 INFO L78 Accepts]: Start accepts. Automaton has 51672 states and 72723 transitions. Word has length 138 [2021-11-06 18:01:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:24,726 INFO L470 AbstractCegarLoop]: Abstraction has 51672 states and 72723 transitions. [2021-11-06 18:01:24,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-06 18:01:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 51672 states and 72723 transitions. [2021-11-06 18:01:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:01:24,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:24,731 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:24,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:01:24,732 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash -71681847, now seen corresponding path program 1 times [2021-11-06 18:01:24,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:24,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063952607] [2021-11-06 18:01:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:24,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:24,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:24,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063952607] [2021-11-06 18:01:24,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063952607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:24,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:24,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:01:24,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651738935] [2021-11-06 18:01:24,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:01:24,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:01:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:24,886 INFO L87 Difference]: Start difference. First operand 51672 states and 72723 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-06 18:01:27,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:27,412 INFO L93 Difference]: Finished difference Result 134693 states and 189449 transitions. [2021-11-06 18:01:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:01:27,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 138 [2021-11-06 18:01:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:27,573 INFO L225 Difference]: With dead ends: 134693 [2021-11-06 18:01:27,573 INFO L226 Difference]: Without dead ends: 83040 [2021-11-06 18:01:27,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:01:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83040 states. [2021-11-06 18:01:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83040 to 51702. [2021-11-06 18:01:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51702 states, 51302 states have (on average 1.403317609449924) internal successors, (71993), 51466 states have internal predecessors, (71993), 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) [2021-11-06 18:01:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51702 states to 51702 states and 72753 transitions. [2021-11-06 18:01:29,256 INFO L78 Accepts]: Start accepts. Automaton has 51702 states and 72753 transitions. Word has length 138 [2021-11-06 18:01:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:29,256 INFO L470 AbstractCegarLoop]: Abstraction has 51702 states and 72753 transitions. [2021-11-06 18:01:29,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-06 18:01:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 51702 states and 72753 transitions. [2021-11-06 18:01:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:01:29,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:29,261 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:01:29,261 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 18090854, now seen corresponding path program 1 times [2021-11-06 18:01:29,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:29,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133901348] [2021-11-06 18:01:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:29,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:29,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:29,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133901348] [2021-11-06 18:01:29,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133901348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:29,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:29,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:01:29,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024052152] [2021-11-06 18:01:29,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:01:29,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:01:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:01:29,398 INFO L87 Difference]: Start difference. First operand 51702 states and 72753 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-06 18:01:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:31,142 INFO L93 Difference]: Finished difference Result 103475 states and 145606 transitions. [2021-11-06 18:01:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:01:31,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 138 [2021-11-06 18:01:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:31,241 INFO L225 Difference]: With dead ends: 103475 [2021-11-06 18:01:31,242 INFO L226 Difference]: Without dead ends: 51792 [2021-11-06 18:01:31,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:01:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51792 states. [2021-11-06 18:01:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51792 to 51762. [2021-11-06 18:01:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51762 states, 51362 states have (on average 1.4028464623651726) internal successors, (72053), 51526 states have internal predecessors, (72053), 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) [2021-11-06 18:01:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51762 states to 51762 states and 72813 transitions. [2021-11-06 18:01:32,736 INFO L78 Accepts]: Start accepts. Automaton has 51762 states and 72813 transitions. Word has length 138 [2021-11-06 18:01:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:32,736 INFO L470 AbstractCegarLoop]: Abstraction has 51762 states and 72813 transitions. [2021-11-06 18:01:32,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-06 18:01:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 51762 states and 72813 transitions. [2021-11-06 18:01:32,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:01:32,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:32,741 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:01:32,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 18:01:32,741 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-06 18:01:32,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash 45156456, now seen corresponding path program 1 times [2021-11-06 18:01:32,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:01:32,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545618063] [2021-11-06 18:01:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:32,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:01:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:01:32,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:01:32,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545618063] [2021-11-06 18:01:32,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545618063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:32,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:32,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:01:32,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924012884] [2021-11-06 18:01:32,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:01:32,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:01:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:01:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:01:32,853 INFO L87 Difference]: Start difference. First operand 51762 states and 72813 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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)