/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--initio.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:12:38,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:12:38,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:12:38,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:12:38,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:12:38,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:12:38,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:12:38,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:12:38,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:12:38,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:12:38,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:12:38,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:12:38,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:12:38,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:12:38,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:12:38,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:12:38,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:12:38,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:12:38,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:12:38,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:12:38,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:12:38,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:12:38,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:12:38,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:12:38,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:12:38,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:12:38,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:12:38,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:12:38,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:12:38,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:12:38,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:12:38,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:12:38,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:12:38,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:12:38,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:12:38,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:12:38,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:12:38,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:12:38,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:12:38,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:12:38,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:12:38,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:12:38,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:12:38,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:12:38,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:12:38,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:12:38,891 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:12:38,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:12:38,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:12:38,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:12:38,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:12:38,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:12:38,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:12:38,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:12:38,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:12:38,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:12:38,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:12:38,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:12:38,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:12:38,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:12:38,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:12:38,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:12:38,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:12:38,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:12:38,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:12:38,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:12:38,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:12:38,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:12:39,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:12:39,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:12:39,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:12:39,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:12:39,304 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:12:39,305 INFO L432 ainManager$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--scsi--initio.ko-entry_point.cil.out.i [2020-12-22 15:12:39,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/579e8e8e8/0e5bcf59b8fb4c75a0687a05822172dc/FLAG793c124f8 [2020-12-22 15:12:40,459 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:12:40,460 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--scsi--initio.ko-entry_point.cil.out.i [2020-12-22 15:12:40,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/579e8e8e8/0e5bcf59b8fb4c75a0687a05822172dc/FLAG793c124f8 [2020-12-22 15:12:40,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/579e8e8e8/0e5bcf59b8fb4c75a0687a05822172dc [2020-12-22 15:12:40,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:12:40,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:12:40,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:12:40,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:12:40,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:12:40,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:12:40" (1/1) ... [2020-12-22 15:12:40,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1a59f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:40, skipping insertion in model container [2020-12-22 15:12:40,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:12:40" (1/1) ... [2020-12-22 15:12:40,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:12:41,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:12:42,787 WARN L226 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--scsi--initio.ko-entry_point.cil.out.i[238430,238443] [2020-12-22 15:12:42,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:12:42,864 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:12:43,510 WARN L226 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--scsi--initio.ko-entry_point.cil.out.i[238430,238443] [2020-12-22 15:12:43,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:12:43,881 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:12:43,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43 WrapperNode [2020-12-22 15:12:43,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:12:43,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:12:43,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:12:43,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:12:43,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:44,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:46,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:12:46,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:12:46,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:12:46,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:12:46,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:46,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:46,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:46,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:47,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:48,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:48,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... [2020-12-22 15:12:48,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:12:48,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:12:48,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:12:48,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:12:48,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:12:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:12:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:12:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin_accept [2020-12-22 15:12:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin_accept [2020-12-22 15:12:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure initio_abort_srb [2020-12-22 15:12:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_abort_srb [2020-12-22 15:12:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:12:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:12:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:12:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:12:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_scsi [2020-12-22 15:12:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_scsi [2020-12-22 15:12:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:12:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_targ [2020-12-22 15:12:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_targ [2020-12-22 15:12:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:12:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:12:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:12:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure wait_tulip [2020-12-22 15:12:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_tulip [2020-12-22 15:12:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_resel [2020-12-22 15:12:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_resel [2020-12-22 15:12:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:12:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_tag [2020-12-22 15:12:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_tag [2020-12-22 15:12:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:12:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_main [2020-12-22 15:12:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_main [2020-12-22 15:12:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:12:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:12:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:13:28,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:13:28,819 INFO L299 CfgBuilder]: Removed 10522 assume(true) statements. [2020-12-22 15:13:28,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:13:28 BoogieIcfgContainer [2020-12-22 15:13:28,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:13:28,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:13:28,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:13:28,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:13:28,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:12:40" (1/3) ... [2020-12-22 15:13:28,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199705c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:13:28, skipping insertion in model container [2020-12-22 15:13:28,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:12:43" (2/3) ... [2020-12-22 15:13:28,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199705c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:13:28, skipping insertion in model container [2020-12-22 15:13:28,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:13:28" (3/3) ... [2020-12-22 15:13:28,847 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--initio.ko-entry_point.cil.out.i [2020-12-22 15:13:28,855 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:13:28,867 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 15:13:28,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 15:13:28,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:13:28,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:13:28,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:13:28,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:13:28,974 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:13:28,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:13:28,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:13:28,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:13:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11093 states. [2020-12-22 15:13:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 15:13:29,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:29,172 INFO L422 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] [2020-12-22 15:13:29,173 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:13:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1364267164, now seen corresponding path program 1 times [2020-12-22 15:13:29,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:29,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232890696] [2020-12-22 15:13:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:13:29,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232890696] [2020-12-22 15:13:29,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:29,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:13:29,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512796203] [2020-12-22 15:13:29,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:13:29,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:29,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:13:29,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:13:29,897 INFO L87 Difference]: Start difference. First operand 11093 states. Second operand 2 states. [2020-12-22 15:13:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:30,512 INFO L93 Difference]: Finished difference Result 22182 states and 31323 transitions. [2020-12-22 15:13:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:13:30,514 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2020-12-22 15:13:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:30,644 INFO L225 Difference]: With dead ends: 22182 [2020-12-22 15:13:30,644 INFO L226 Difference]: Without dead ends: 11069 [2020-12-22 15:13:30,727 INFO L677 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 [2020-12-22 15:13:30,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11069 states. [2020-12-22 15:13:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11069 to 11069. [2020-12-22 15:13:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11069 states. [2020-12-22 15:13:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 15608 transitions. [2020-12-22 15:13:31,697 INFO L78 Accepts]: Start accepts. Automaton has 11069 states and 15608 transitions. Word has length 59 [2020-12-22 15:13:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:31,699 INFO L481 AbstractCegarLoop]: Abstraction has 11069 states and 15608 transitions. [2020-12-22 15:13:31,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:13:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11069 states and 15608 transitions. [2020-12-22 15:13:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 15:13:31,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:31,709 INFO L422 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] [2020-12-22 15:13:31,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:13:31,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:13:31,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1103538858, now seen corresponding path program 1 times [2020-12-22 15:13:31,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:31,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412304098] [2020-12-22 15:13:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:13:32,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412304098] [2020-12-22 15:13:32,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:32,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485718293] [2020-12-22 15:13:32,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:32,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:32,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:32,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:32,016 INFO L87 Difference]: Start difference. First operand 11069 states and 15608 transitions. Second operand 3 states. [2020-12-22 15:13:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:33,087 INFO L93 Difference]: Finished difference Result 32851 states and 46384 transitions. [2020-12-22 15:13:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:33,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 15:13:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:33,242 INFO L225 Difference]: With dead ends: 32851 [2020-12-22 15:13:33,243 INFO L226 Difference]: Without dead ends: 21808 [2020-12-22 15:13:33,416 INFO L677 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 [2020-12-22 15:13:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21808 states. [2020-12-22 15:13:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21808 to 21807. [2020-12-22 15:13:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21807 states. [2020-12-22 15:13:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21807 states to 21807 states and 30802 transitions. [2020-12-22 15:13:34,488 INFO L78 Accepts]: Start accepts. Automaton has 21807 states and 30802 transitions. Word has length 59 [2020-12-22 15:13:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:34,490 INFO L481 AbstractCegarLoop]: Abstraction has 21807 states and 30802 transitions. [2020-12-22 15:13:34,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 21807 states and 30802 transitions. [2020-12-22 15:13:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 15:13:34,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:34,506 INFO L422 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] [2020-12-22 15:13:34,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:13:34,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:13:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 184602393, now seen corresponding path program 1 times [2020-12-22 15:13:34,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:34,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479038197] [2020-12-22 15:13:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:13:34,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479038197] [2020-12-22 15:13:34,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:34,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:13:34,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910090499] [2020-12-22 15:13:34,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:34,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:34,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:34,824 INFO L87 Difference]: Start difference. First operand 21807 states and 30802 transitions. Second operand 3 states. [2020-12-22 15:13:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:35,624 INFO L93 Difference]: Finished difference Result 43589 states and 61578 transitions. [2020-12-22 15:13:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:35,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 15:13:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:35,717 INFO L225 Difference]: With dead ends: 43589 [2020-12-22 15:13:35,717 INFO L226 Difference]: Without dead ends: 21808 [2020-12-22 15:13:35,784 INFO L677 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 [2020-12-22 15:13:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21808 states. [2020-12-22 15:13:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21808 to 21808. [2020-12-22 15:13:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21808 states. [2020-12-22 15:13:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21808 states to 21808 states and 30803 transitions. [2020-12-22 15:13:36,720 INFO L78 Accepts]: Start accepts. Automaton has 21808 states and 30803 transitions. Word has length 76 [2020-12-22 15:13:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:36,721 INFO L481 AbstractCegarLoop]: Abstraction has 21808 states and 30803 transitions. [2020-12-22 15:13:36,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 21808 states and 30803 transitions. [2020-12-22 15:13:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 15:13:36,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:36,732 INFO L422 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] [2020-12-22 15:13:36,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:13:36,733 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:13:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash -48763272, now seen corresponding path program 1 times [2020-12-22 15:13:36,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:36,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384344407] [2020-12-22 15:13:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 15:13:37,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384344407] [2020-12-22 15:13:37,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992774382] [2020-12-22 15:13:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:38,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:13:38,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 15:13:38,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:38,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:13:38,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44584815] [2020-12-22 15:13:38,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:38,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:38,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:13:38,597 INFO L87 Difference]: Start difference. First operand 21808 states and 30803 transitions. Second operand 3 states. [2020-12-22 15:13:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:39,380 INFO L93 Difference]: Finished difference Result 43590 states and 61578 transitions. [2020-12-22 15:13:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:39,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 15:13:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:39,602 INFO L225 Difference]: With dead ends: 43590 [2020-12-22 15:13:39,603 INFO L226 Difference]: Without dead ends: 21808 [2020-12-22 15:13:39,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:13:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21808 states. [2020-12-22 15:13:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21808 to 21808. [2020-12-22 15:13:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21808 states. [2020-12-22 15:13:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21808 states to 21808 states and 30802 transitions. [2020-12-22 15:13:40,847 INFO L78 Accepts]: Start accepts. Automaton has 21808 states and 30802 transitions. Word has length 77 [2020-12-22 15:13:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:40,847 INFO L481 AbstractCegarLoop]: Abstraction has 21808 states and 30802 transitions. [2020-12-22 15:13:40,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 21808 states and 30802 transitions. [2020-12-22 15:13:40,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 15:13:40,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:40,862 INFO L422 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] [2020-12-22 15:13:41,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:41,076 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:13:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:41,076 INFO L82 PathProgramCache]: Analyzing trace with hash -50610314, now seen corresponding path program 1 times [2020-12-22 15:13:41,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:41,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877173360] [2020-12-22 15:13:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 15:13:41,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877173360] [2020-12-22 15:13:41,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:41,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:13:41,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363174840] [2020-12-22 15:13:41,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:13:41,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:41,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:13:41,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:41,325 INFO L87 Difference]: Start difference. First operand 21808 states and 30802 transitions. Second operand 3 states. [2020-12-22 15:13:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:42,885 INFO L93 Difference]: Finished difference Result 41742 states and 59076 transitions. [2020-12-22 15:13:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:13:42,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 15:13:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:42,886 INFO L225 Difference]: With dead ends: 41742 [2020-12-22 15:13:42,886 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 15:13:43,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:13:43,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 15:13:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 15:13:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 15:13:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 15:13:43,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-12-22 15:13:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:43,006 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 15:13:43,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:13:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 15:13:43,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 15:13:43,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:13:43,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 15:14:53,921 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2020-12-22 15:15:16,580 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2020-12-22 15:15:39,397 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11