./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.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 e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:58:43,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:58:43,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:58:43,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:58:43,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:58:43,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:58:43,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:58:43,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:58:43,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:58:43,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:58:43,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:58:43,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:58:43,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:58:43,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:58:43,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:58:43,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:58:43,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:58:43,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:58:43,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:58:43,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:58:43,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:58:43,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:58:43,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:58:43,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:58:43,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:58:43,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:58:43,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:58:43,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:58:43,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:58:43,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:58:43,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:58:43,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:58:43,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:58:43,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:58:43,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:58:43,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:58:43,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:58:43,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:58:43,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:58:43,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:58:43,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:58:43,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:58:43,790 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:58:43,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:58:43,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:58:43,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:58:43,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:58:43,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:58:43,793 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:58:43,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:58:43,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:58:43,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:58:43,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:58:43,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:58:43,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:58:43,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:58:43,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:58:43,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:58:43,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:58:43,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:58:43,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:58:43,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:58:43,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:58:43,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:58:43,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:58:43,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-06 18:58:43,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:58:44,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:58:44,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:58:44,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:58:44,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:58:44,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-06 18:58:44,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ec40653c/d05d39ad23e7468892124b2b828bf041/FLAG341ecb63a [2021-11-06 18:58:44,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:58:44,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-06 18:58:44,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ec40653c/d05d39ad23e7468892124b2b828bf041/FLAG341ecb63a [2021-11-06 18:58:44,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ec40653c/d05d39ad23e7468892124b2b828bf041 [2021-11-06 18:58:44,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:58:44,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:58:44,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:58:44,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:58:44,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:58:44,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:58:44" (1/1) ... [2021-11-06 18:58:44,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b0f7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:44, skipping insertion in model container [2021-11-06 18:58:44,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:58:44" (1/1) ... [2021-11-06 18:58:44,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:58:44,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:58:46,706 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-06 18:58:46,708 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-06 18:58:46,709 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-06 18:58:46,709 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-06 18:58:46,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:58:46,766 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:58:47,026 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-06 18:58:47,027 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-06 18:58:47,028 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-06 18:58:47,028 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-06 18:58:47,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:58:47,176 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:58:47,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47 WrapperNode [2021-11-06 18:58:47,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:58:47,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:58:47,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:58:47,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:58:47,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:47,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:47,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:58:47,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:58:47,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:58:47,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:58:47,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:47,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:47,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:47,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:48,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:48,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:48,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:48,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:58:48,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:58:48,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:58:48,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:58:48,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (1/1) ... [2021-11-06 18:58:48,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:58:48,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:58:48,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:58:48,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:58:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:58:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:58:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:58:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:58:57,743 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:58:57,743 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:58:57,744 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:58:57,744 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:58:57,744 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:58:57,745 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:58:57,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:58:57,763 INFO L299 CfgBuilder]: Removed 7065 assume(true) statements. [2021-11-06 18:58:57,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:58:57 BoogieIcfgContainer [2021-11-06 18:58:57,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:58:57,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:58:57,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:58:57,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:58:57,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:58:44" (1/3) ... [2021-11-06 18:58:57,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8cc3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:58:57, skipping insertion in model container [2021-11-06 18:58:57,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:47" (2/3) ... [2021-11-06 18:58:57,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8cc3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:58:57, skipping insertion in model container [2021-11-06 18:58:57,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:58:57" (3/3) ... [2021-11-06 18:58:57,773 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-06 18:58:57,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:58:57,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2021-11-06 18:58:57,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:58:57,819 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:58:57,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2021-11-06 18:58:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 5433 states, 5374 states have (on average 1.2285076293263864) internal successors, (6602), 5432 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:58:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 18:58:57,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:58:57,881 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] [2021-11-06 18:58:57,881 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:58:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:58:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-06 18:58:57,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:58:57,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157698581] [2021-11-06 18:58:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:58:57,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:58:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:58:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:58:58,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:58:58,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157698581] [2021-11-06 18:58:58,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157698581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:58:58,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:58:58,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:58:58,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696270273] [2021-11-06 18:58:58,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:58:58,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:58:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:58:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:58:58,334 INFO L87 Difference]: Start difference. First operand has 5433 states, 5374 states have (on average 1.2285076293263864) internal successors, (6602), 5432 states have internal predecessors, (6602), 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 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:00,895 INFO L93 Difference]: Finished difference Result 15847 states and 19231 transitions. [2021-11-06 18:59:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:00,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 18:59:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:00,948 INFO L225 Difference]: With dead ends: 15847 [2021-11-06 18:59:00,948 INFO L226 Difference]: Without dead ends: 10276 [2021-11-06 18:59:00,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2021-11-06 18:59:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 10236. [2021-11-06 18:59:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10236 states, 10177 states have (on average 1.1902328780583669) internal successors, (12113), 10235 states have internal predecessors, (12113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10236 states to 10236 states and 12113 transitions. [2021-11-06 18:59:01,258 INFO L78 Accepts]: Start accepts. Automaton has 10236 states and 12113 transitions. Word has length 45 [2021-11-06 18:59:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:01,259 INFO L470 AbstractCegarLoop]: Abstraction has 10236 states and 12113 transitions. [2021-11-06 18:59:01,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:01,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10236 states and 12113 transitions. [2021-11-06 18:59:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 18:59:01,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:01,264 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] [2021-11-06 18:59:01,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:59:01,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2015026376, now seen corresponding path program 1 times [2021-11-06 18:59:01,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:01,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32681229] [2021-11-06 18:59:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:01,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:01,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:01,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32681229] [2021-11-06 18:59:01,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32681229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:01,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:01,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:01,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602178383] [2021-11-06 18:59:01,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:01,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:01,426 INFO L87 Difference]: Start difference. First operand 10236 states and 12113 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:04,096 INFO L93 Difference]: Finished difference Result 29864 states and 35317 transitions. [2021-11-06 18:59:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:04,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 18:59:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:04,171 INFO L225 Difference]: With dead ends: 29864 [2021-11-06 18:59:04,171 INFO L226 Difference]: Without dead ends: 19704 [2021-11-06 18:59:04,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19704 states. [2021-11-06 18:59:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19704 to 19340. [2021-11-06 18:59:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19340 states, 19281 states have (on average 1.1890462112960947) internal successors, (22926), 19339 states have internal predecessors, (22926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19340 states to 19340 states and 22926 transitions. [2021-11-06 18:59:04,634 INFO L78 Accepts]: Start accepts. Automaton has 19340 states and 22926 transitions. Word has length 45 [2021-11-06 18:59:04,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:04,635 INFO L470 AbstractCegarLoop]: Abstraction has 19340 states and 22926 transitions. [2021-11-06 18:59:04,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19340 states and 22926 transitions. [2021-11-06 18:59:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 18:59:04,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:04,639 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] [2021-11-06 18:59:04,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:59:04,644 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash 272649637, now seen corresponding path program 1 times [2021-11-06 18:59:04,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:04,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278648329] [2021-11-06 18:59:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:04,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:04,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:04,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278648329] [2021-11-06 18:59:04,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278648329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:04,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:04,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:04,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998270234] [2021-11-06 18:59:04,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:04,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:04,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:04,753 INFO L87 Difference]: Start difference. First operand 19340 states and 22926 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:07,193 INFO L93 Difference]: Finished difference Result 39911 states and 47246 transitions. [2021-11-06 18:59:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:07,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-06 18:59:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:07,234 INFO L225 Difference]: With dead ends: 39911 [2021-11-06 18:59:07,235 INFO L226 Difference]: Without dead ends: 20647 [2021-11-06 18:59:07,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20647 states. [2021-11-06 18:59:07,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20647 to 20541. [2021-11-06 18:59:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20541 states, 20482 states have (on average 1.1842593496728835) internal successors, (24256), 20540 states have internal predecessors, (24256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20541 states to 20541 states and 24256 transitions. [2021-11-06 18:59:07,748 INFO L78 Accepts]: Start accepts. Automaton has 20541 states and 24256 transitions. Word has length 51 [2021-11-06 18:59:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:07,750 INFO L470 AbstractCegarLoop]: Abstraction has 20541 states and 24256 transitions. [2021-11-06 18:59:07,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 20541 states and 24256 transitions. [2021-11-06 18:59:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 18:59:07,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:07,751 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] [2021-11-06 18:59:07,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:59:07,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash 834771020, now seen corresponding path program 1 times [2021-11-06 18:59:07,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:07,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403821552] [2021-11-06 18:59:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:07,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:07,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:07,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403821552] [2021-11-06 18:59:07,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403821552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:07,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:07,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:07,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930426014] [2021-11-06 18:59:07,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:07,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:07,877 INFO L87 Difference]: Start difference. First operand 20541 states and 24256 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:10,709 INFO L93 Difference]: Finished difference Result 49792 states and 58752 transitions. [2021-11-06 18:59:10,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-11-06 18:59:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:10,779 INFO L225 Difference]: With dead ends: 49792 [2021-11-06 18:59:10,780 INFO L226 Difference]: Without dead ends: 29327 [2021-11-06 18:59:10,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29327 states. [2021-11-06 18:59:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29327 to 29053. [2021-11-06 18:59:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29053 states, 28994 states have (on average 1.182589501276126) internal successors, (34288), 29052 states have internal predecessors, (34288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 34288 transitions. [2021-11-06 18:59:11,611 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 34288 transitions. Word has length 53 [2021-11-06 18:59:11,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:11,612 INFO L470 AbstractCegarLoop]: Abstraction has 29053 states and 34288 transitions. [2021-11-06 18:59:11,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 34288 transitions. [2021-11-06 18:59:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 18:59:11,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:11,614 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] [2021-11-06 18:59:11,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:59:11,614 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1285461366, now seen corresponding path program 1 times [2021-11-06 18:59:11,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:11,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332076652] [2021-11-06 18:59:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:11,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:11,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:11,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332076652] [2021-11-06 18:59:11,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332076652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:11,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:11,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:11,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183168400] [2021-11-06 18:59:11,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:11,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:11,734 INFO L87 Difference]: Start difference. First operand 29053 states and 34288 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:14,595 INFO L93 Difference]: Finished difference Result 67958 states and 80512 transitions. [2021-11-06 18:59:14,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:14,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-06 18:59:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:14,672 INFO L225 Difference]: With dead ends: 67958 [2021-11-06 18:59:14,672 INFO L226 Difference]: Without dead ends: 38981 [2021-11-06 18:59:14,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38981 states. [2021-11-06 18:59:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38981 to 38623. [2021-11-06 18:59:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38623 states, 38564 states have (on average 1.1900217819728245) internal successors, (45892), 38622 states have internal predecessors, (45892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38623 states to 38623 states and 45892 transitions. [2021-11-06 18:59:15,680 INFO L78 Accepts]: Start accepts. Automaton has 38623 states and 45892 transitions. Word has length 58 [2021-11-06 18:59:15,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:15,682 INFO L470 AbstractCegarLoop]: Abstraction has 38623 states and 45892 transitions. [2021-11-06 18:59:15,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 38623 states and 45892 transitions. [2021-11-06 18:59:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 18:59:15,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:15,687 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:59:15,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:59:15,687 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 352412947, now seen corresponding path program 1 times [2021-11-06 18:59:15,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:15,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397231546] [2021-11-06 18:59:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:15,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:15,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:15,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397231546] [2021-11-06 18:59:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397231546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:15,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:15,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:15,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827570142] [2021-11-06 18:59:15,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:15,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:15,809 INFO L87 Difference]: Start difference. First operand 38623 states and 45892 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:19,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:19,154 INFO L93 Difference]: Finished difference Result 115346 states and 137075 transitions. [2021-11-06 18:59:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:19,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-06 18:59:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:19,337 INFO L225 Difference]: With dead ends: 115346 [2021-11-06 18:59:19,337 INFO L226 Difference]: Without dead ends: 76799 [2021-11-06 18:59:19,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76799 states. [2021-11-06 18:59:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76799 to 76493. [2021-11-06 18:59:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76493 states, 76434 states have (on average 1.1897061517125886) internal successors, (90934), 76492 states have internal predecessors, (90934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76493 states to 76493 states and 90934 transitions. [2021-11-06 18:59:21,121 INFO L78 Accepts]: Start accepts. Automaton has 76493 states and 90934 transitions. Word has length 60 [2021-11-06 18:59:21,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:21,121 INFO L470 AbstractCegarLoop]: Abstraction has 76493 states and 90934 transitions. [2021-11-06 18:59:21,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 76493 states and 90934 transitions. [2021-11-06 18:59:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 18:59:21,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:21,123 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:59:21,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:59:21,123 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-06 18:59:21,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:21,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468129315] [2021-11-06 18:59:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:21,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:21,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:21,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468129315] [2021-11-06 18:59:21,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468129315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:21,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:21,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:21,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247385155] [2021-11-06 18:59:21,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:21,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:21,397 INFO L87 Difference]: Start difference. First operand 76493 states and 90934 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:26,224 INFO L93 Difference]: Finished difference Result 228047 states and 271181 transitions. [2021-11-06 18:59:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:26,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-06 18:59:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:26,685 INFO L225 Difference]: With dead ends: 228047 [2021-11-06 18:59:26,686 INFO L226 Difference]: Without dead ends: 151681 [2021-11-06 18:59:26,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151681 states. [2021-11-06 18:59:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151681 to 151641. [2021-11-06 18:59:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151641 states, 151582 states have (on average 1.1888614743175312) internal successors, (180210), 151640 states have internal predecessors, (180210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151641 states to 151641 states and 180210 transitions. [2021-11-06 18:59:30,532 INFO L78 Accepts]: Start accepts. Automaton has 151641 states and 180210 transitions. Word has length 74 [2021-11-06 18:59:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:30,532 INFO L470 AbstractCegarLoop]: Abstraction has 151641 states and 180210 transitions. [2021-11-06 18:59:30,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 151641 states and 180210 transitions. [2021-11-06 18:59:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 18:59:30,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:30,534 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:59:30,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:59:30,534 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-06 18:59:30,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:30,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151695950] [2021-11-06 18:59:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:30,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:30,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:30,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151695950] [2021-11-06 18:59:30,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151695950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:30,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:30,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:30,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328059504] [2021-11-06 18:59:30,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:30,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:30,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:30,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:30,637 INFO L87 Difference]: Start difference. First operand 151641 states and 180210 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:59:37,545 INFO L93 Difference]: Finished difference Result 378407 states and 449861 transitions. [2021-11-06 18:59:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:59:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-06 18:59:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:59:38,041 INFO L225 Difference]: With dead ends: 378407 [2021-11-06 18:59:38,042 INFO L226 Difference]: Without dead ends: 226893 [2021-11-06 18:59:38,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226893 states. [2021-11-06 18:59:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226893 to 226853. [2021-11-06 18:59:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226853 states, 226794 states have (on average 1.1888057003271693) internal successors, (269614), 226852 states have internal predecessors, (269614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226853 states to 226853 states and 269614 transitions. [2021-11-06 18:59:43,731 INFO L78 Accepts]: Start accepts. Automaton has 226853 states and 269614 transitions. Word has length 74 [2021-11-06 18:59:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:59:43,731 INFO L470 AbstractCegarLoop]: Abstraction has 226853 states and 269614 transitions. [2021-11-06 18:59:43,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 226853 states and 269614 transitions. [2021-11-06 18:59:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 18:59:43,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:43,733 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:59:43,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:59:43,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 56 more)] === [2021-11-06 18:59:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-06 18:59:43,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:43,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794005618] [2021-11-06 18:59:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:43,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 18:59:43,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:43,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794005618] [2021-11-06 18:59:43,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794005618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:43,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:43,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:43,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043501029] [2021-11-06 18:59:43,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:59:43,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:59:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:59:43,866 INFO L87 Difference]: Start difference. First operand 226853 states and 269614 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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)