./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.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-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:53:24,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:53:24,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:53:24,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:53:24,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:53:24,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:53:24,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:53:24,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:53:24,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:53:24,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:53:24,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:53:24,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:53:24,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:53:24,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:53:24,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:53:24,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:53:24,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:53:24,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:53:24,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:53:24,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:53:24,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:53:24,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:53:24,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:53:24,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:53:24,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:53:24,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:53:24,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:53:24,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:53:24,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:53:24,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:53:24,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:53:24,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:53:24,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:53:24,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:53:24,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:53:24,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:53:24,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:53:24,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:53:24,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:53:24,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:53:24,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:53:24,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:53:24,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:53:24,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:53:24,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:53:24,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:53:24,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:53:24,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:53:24,887 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:53:24,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:53:24,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:53:24,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:53:24,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:53:24,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:53:24,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:53:24,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:53:24,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:53:24,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:53:24,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:53:24,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:53:24,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:53:24,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:53:24,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:53:24,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:53:24,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:53:24,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:53:24,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:53:24,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:53:24,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:53:24,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:53:24,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:53:24,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2021-11-06 16:53:25,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:53:25,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:53:25,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:53:25,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:53:25,109 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:53:25,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2021-11-06 16:53:25,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ace1058/4d7cebbaf18c47be915379e56b4a5f1d/FLAG6c9a3d7d1 [2021-11-06 16:53:25,815 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:53:25,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2021-11-06 16:53:25,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ace1058/4d7cebbaf18c47be915379e56b4a5f1d/FLAG6c9a3d7d1 [2021-11-06 16:53:26,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08ace1058/4d7cebbaf18c47be915379e56b4a5f1d [2021-11-06 16:53:26,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:53:26,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:53:26,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:53:26,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:53:26,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:53:26,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:53:26" (1/1) ... [2021-11-06 16:53:26,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346c3985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:26, skipping insertion in model container [2021-11-06 16:53:26,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:53:26" (1/1) ... [2021-11-06 16:53:26,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:53:26,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:53:27,492 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-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2021-11-06 16:53:27,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:53:27,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:53:27,858 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-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2021-11-06 16:53:27,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:53:27,954 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:53:27,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27 WrapperNode [2021-11-06 16:53:27,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:53:27,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:53:27,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:53:27,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:53:27,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:28,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:30,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:53:30,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:53:30,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:53:30,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:53:30,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:30,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:31,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:31,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:32,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:32,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:33,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:33,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:53:33,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:53:33,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:53:33,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:53:33,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (1/1) ... [2021-11-06 16:53:33,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:53:33,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:53:33,841 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 16:53:33,845 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 16:53:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:53:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:53:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:53:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:53:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:53:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:53:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:53:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:53:33,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:56:00,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:56:00,272 INFO L299 CfgBuilder]: Removed 12232 assume(true) statements. [2021-11-06 16:56:00,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:56:00 BoogieIcfgContainer [2021-11-06 16:56:00,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:56:00,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:56:00,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:56:00,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:56:00,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:53:26" (1/3) ... [2021-11-06 16:56:00,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4ff18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:56:00, skipping insertion in model container [2021-11-06 16:56:00,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:27" (2/3) ... [2021-11-06 16:56:00,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4ff18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:56:00, skipping insertion in model container [2021-11-06 16:56:00,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:56:00" (3/3) ... [2021-11-06 16:56:00,296 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2021-11-06 16:56:00,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:56:00,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 16:56:00,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:56:00,384 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 16:56:00,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 16:56:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 20667 states, 20655 states have (on average 1.4811425804889857) internal successors, (30593), 20666 states have internal predecessors, (30593), 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 16:56:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 16:56:00,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:56:00,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:56:00,613 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:56:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:56:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash -190751689, now seen corresponding path program 1 times [2021-11-06 16:56:00,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:56:00,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545828818] [2021-11-06 16:56:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:56:00,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:56:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:56:01,240 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 16:56:01,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:56:01,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545828818] [2021-11-06 16:56:01,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545828818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:56:01,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:56:01,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:56:01,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872325688] [2021-11-06 16:56:01,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:56:01,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:56:01,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:56:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:56:01,303 INFO L87 Difference]: Start difference. First operand has 20667 states, 20655 states have (on average 1.4811425804889857) internal successors, (30593), 20666 states have internal predecessors, (30593), 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) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 16:56:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:56:01,822 INFO L93 Difference]: Finished difference Result 41330 states and 61181 transitions. [2021-11-06 16:56:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:56:01,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2021-11-06 16:56:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:56:01,901 INFO L225 Difference]: With dead ends: 41330 [2021-11-06 16:56:01,901 INFO L226 Difference]: Without dead ends: 20647 [2021-11-06 16:56:01,941 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 16:56:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20647 states. [2021-11-06 16:56:02,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20647 to 20647. [2021-11-06 16:56:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20647 states, 20636 states have (on average 1.4777573173095562) internal successors, (30495), 20646 states have internal predecessors, (30495), 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 16:56:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20647 states to 20647 states and 30495 transitions. [2021-11-06 16:56:02,408 INFO L78 Accepts]: Start accepts. Automaton has 20647 states and 30495 transitions. Word has length 64 [2021-11-06 16:56:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:56:02,408 INFO L470 AbstractCegarLoop]: Abstraction has 20647 states and 30495 transitions. [2021-11-06 16:56:02,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 16:56:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20647 states and 30495 transitions. [2021-11-06 16:56:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 16:56:02,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:56:02,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:56:02,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:56:02,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:56:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:56:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash 718172739, now seen corresponding path program 1 times [2021-11-06 16:56:02,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:56:02,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690280526] [2021-11-06 16:56:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:56:02,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:56:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:56:02,803 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 16:56:02,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:56:02,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690280526] [2021-11-06 16:56:02,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690280526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:56:02,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:56:02,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:56:02,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616816916] [2021-11-06 16:56:02,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:56:02,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:56:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:56:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:56:02,808 INFO L87 Difference]: Start difference. First operand 20647 states and 30495 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 16:56:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:56:04,005 INFO L93 Difference]: Finished difference Result 57628 states and 85213 transitions. [2021-11-06 16:56:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:56:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-06 16:56:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:56:04,088 INFO L225 Difference]: With dead ends: 57628 [2021-11-06 16:56:04,088 INFO L226 Difference]: Without dead ends: 37033 [2021-11-06 16:56:04,338 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 16:56:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37033 states. [2021-11-06 16:56:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37033 to 35875. [2021-11-06 16:56:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35875 states, 35864 states have (on average 1.4803981708677225) internal successors, (53093), 35874 states have internal predecessors, (53093), 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 16:56:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35875 states to 35875 states and 53093 transitions. [2021-11-06 16:56:04,936 INFO L78 Accepts]: Start accepts. Automaton has 35875 states and 53093 transitions. Word has length 64 [2021-11-06 16:56:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:56:04,938 INFO L470 AbstractCegarLoop]: Abstraction has 35875 states and 53093 transitions. [2021-11-06 16:56:04,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 16:56:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 35875 states and 53093 transitions. [2021-11-06 16:56:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 16:56:04,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:56:04,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:56:04,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:56:04,939 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:56:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:56:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1705378750, now seen corresponding path program 1 times [2021-11-06 16:56:04,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:56:04,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949065723] [2021-11-06 16:56:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:56:04,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:56:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:56:05,430 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 16:56:05,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:56:05,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949065723] [2021-11-06 16:56:05,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949065723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:56:05,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:56:05,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:56:05,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403941111] [2021-11-06 16:56:05,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:56:05,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:56:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:56:05,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:56:05,435 INFO L87 Difference]: Start difference. First operand 35875 states and 53093 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 16:56:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:56:08,471 INFO L93 Difference]: Finished difference Result 107486 states and 159125 transitions. [2021-11-06 16:56:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:56:08,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-06 16:56:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:56:08,620 INFO L225 Difference]: With dead ends: 107486 [2021-11-06 16:56:08,620 INFO L226 Difference]: Without dead ends: 71663 [2021-11-06 16:56:08,800 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 16:56:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71663 states. [2021-11-06 16:56:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71663 to 71651. [2021-11-06 16:56:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71651 states, 71640 states have (on average 1.4807230597431602) internal successors, (106079), 71650 states have internal predecessors, (106079), 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 16:56:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71651 states to 71651 states and 106079 transitions. [2021-11-06 16:56:10,008 INFO L78 Accepts]: Start accepts. Automaton has 71651 states and 106079 transitions. Word has length 64 [2021-11-06 16:56:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:56:10,010 INFO L470 AbstractCegarLoop]: Abstraction has 71651 states and 106079 transitions. [2021-11-06 16:56:10,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 16:56:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 71651 states and 106079 transitions. [2021-11-06 16:56:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 16:56:10,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:56:10,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:56:10,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:56:10,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:56:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:56:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1882764130, now seen corresponding path program 1 times [2021-11-06 16:56:10,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:56:10,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013103355] [2021-11-06 16:56:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:56:10,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:56:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:56:10,523 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 16:56:10,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:56:10,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013103355] [2021-11-06 16:56:10,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013103355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:56:10,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:56:10,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:56:10,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501026953] [2021-11-06 16:56:10,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:56:10,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:56:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:56:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:56:10,526 INFO L87 Difference]: Start difference. First operand 71651 states and 106079 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 16:56:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:56:12,296 INFO L93 Difference]: Finished difference Result 211799 states and 313615 transitions. [2021-11-06 16:56:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:56:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-06 16:56:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:56:12,612 INFO L225 Difference]: With dead ends: 211799 [2021-11-06 16:56:12,612 INFO L226 Difference]: Without dead ends: 140200 [2021-11-06 16:56:12,719 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 16:56:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140200 states. [2021-11-06 16:56:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140200 to 137565. [2021-11-06 16:56:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137565 states, 137554 states have (on average 1.4809529348474053) internal successors, (203711), 137564 states have internal predecessors, (203711), 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 16:56:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137565 states to 137565 states and 203711 transitions. [2021-11-06 16:56:15,430 INFO L78 Accepts]: Start accepts. Automaton has 137565 states and 203711 transitions. Word has length 69 [2021-11-06 16:56:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:56:15,433 INFO L470 AbstractCegarLoop]: Abstraction has 137565 states and 203711 transitions. [2021-11-06 16:56:15,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 16:56:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 137565 states and 203711 transitions. [2021-11-06 16:56:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 16:56:15,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:56:15,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:56:15,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:56:15,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:56:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:56:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1473040866, now seen corresponding path program 1 times [2021-11-06 16:56:15,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:56:15,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521983400] [2021-11-06 16:56:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:56:15,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:56:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:56:15,831 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 16:56:15,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:56:15,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521983400] [2021-11-06 16:56:15,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521983400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:56:15,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:56:15,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:56:15,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677036693] [2021-11-06 16:56:15,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:56:15,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:56:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:56:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:56:15,834 INFO L87 Difference]: Start difference. First operand 137565 states and 203711 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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)