./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.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 371146a21f508450d2917c35c74c2cfe0e1080bf9001699397599cb4eb3a0e88 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 23:43:37,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:43:37,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:43:37,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:43:37,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:43:37,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:43:37,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:43:37,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:43:37,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:43:37,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:43:37,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:43:37,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:43:37,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:43:37,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:43:37,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:43:37,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:43:37,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:43:37,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:43:37,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:43:37,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:43:37,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:43:37,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:43:37,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:43:37,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:43:37,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:43:37,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:43:37,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:43:37,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:43:37,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:43:37,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:43:37,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:43:37,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:43:37,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:43:37,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:43:37,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:43:37,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:43:37,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:43:37,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:43:37,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:43:37,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:43:37,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:43:37,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:43:37,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:43:37,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:43:37,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:43:37,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:43:37,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:43:37,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:43:37,734 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:43:37,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:43:37,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:43:37,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:43:37,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:43:37,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:43:37,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:43:37,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:43:37,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:43:37,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:43:37,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:43:37,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:43:37,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:43:37,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:43:37,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:43:37,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:43:37,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:43:37,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:43:37,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:43:37,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:43:37,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:43:37,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:43:37,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:43:37,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371146a21f508450d2917c35c74c2cfe0e1080bf9001699397599cb4eb3a0e88 [2021-11-02 23:43:37,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:43:37,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:43:37,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:43:37,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:43:37,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:43:37,966 INFO L432 ainManager$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-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-02 23:43:38,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbcf9d5f/85f7e344276e4aa7950ab74af9274198/FLAG10606b5f0 [2021-11-02 23:43:38,678 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:43:38,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-02 23:43:38,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbcf9d5f/85f7e344276e4aa7950ab74af9274198/FLAG10606b5f0 [2021-11-02 23:43:38,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbcf9d5f/85f7e344276e4aa7950ab74af9274198 [2021-11-02 23:43:38,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:43:38,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:43:38,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:43:38,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:43:38,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:43:38,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:43:38" (1/1) ... [2021-11-02 23:43:38,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421f1241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:38, skipping insertion in model container [2021-11-02 23:43:38,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:43:38" (1/1) ... [2021-11-02 23:43:38,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:43:38,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:43:42,217 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-alloc-spinlock_fs-autofs4-autofs4.cil.i[402539,402552] [2021-11-02 23:43:42,222 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-alloc-spinlock_fs-autofs4-autofs4.cil.i[402684,402697] [2021-11-02 23:43:42,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:43:42,285 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:43:42,599 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-alloc-spinlock_fs-autofs4-autofs4.cil.i[402539,402552] [2021-11-02 23:43:42,600 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-alloc-spinlock_fs-autofs4-autofs4.cil.i[402684,402697] [2021-11-02 23:43:42,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:43:42,740 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:43:42,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42 WrapperNode [2021-11-02 23:43:42,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:43:42,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:43:42,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:43:42,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:43:42,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:42,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:46,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:43:46,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:43:46,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:43:46,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:43:46,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:46,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:47,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:47,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:48,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:49,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:49,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:50,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:43:50,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:43:50,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:43:50,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:43:50,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (1/1) ... [2021-11-02 23:43:50,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:43:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:43:50,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:43:50,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:43:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 23:43:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 23:43:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:43:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:43:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 23:44:11,250 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-02 23:44:11,251 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-02 23:44:11,251 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-02 23:44:11,252 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-02 23:44:11,252 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-02 23:44:11,252 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-02 23:44:11,252 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-02 23:44:11,253 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-02 23:44:11,254 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-02 23:44:11,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-02 23:44:11,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-02 23:44:11,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-02 23:44:11,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-02 23:44:11,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-02 23:44:11,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 23:44:11,269 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-02 23:44:11,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:44:11,360 INFO L299 CfgBuilder]: Removed 36865 assume(true) statements. [2021-11-02 23:44:11,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:44:11 BoogieIcfgContainer [2021-11-02 23:44:11,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:44:11,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:44:11,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:44:11,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:44:11,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:43:38" (1/3) ... [2021-11-02 23:44:11,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cb4c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:44:11, skipping insertion in model container [2021-11-02 23:44:11,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:43:42" (2/3) ... [2021-11-02 23:44:11,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cb4c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:44:11, skipping insertion in model container [2021-11-02 23:44:11,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:44:11" (3/3) ... [2021-11-02 23:44:11,396 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-02 23:44:11,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:44:11,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2021-11-02 23:44:11,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:44:11,524 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 23:44:11,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2021-11-02 23:44:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 34002 states, 33958 states have (on average 1.3837976323693975) internal successors, (46991), 34001 states have internal predecessors, (46991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:44:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-02 23:44:12,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:44:12,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:44:12,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-02 23:44:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:44:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash -450101907, now seen corresponding path program 1 times [2021-11-02 23:44:12,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:44:12,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586157702] [2021-11-02 23:44:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:44:12,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:44:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:44:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:44:12,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:44:12,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586157702] [2021-11-02 23:44:12,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586157702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:44:12,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:44:12,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:44:12,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495437336] [2021-11-02 23:44:12,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:44:12,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:44:13,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:44:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:44:13,074 INFO L87 Difference]: Start difference. First operand has 34002 states, 33958 states have (on average 1.3837976323693975) internal successors, (46991), 34001 states have internal predecessors, (46991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:44:15,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:44:42,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:44:58,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:48:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:48:25,959 INFO L93 Difference]: Finished difference Result 66059 states and 91429 transitions. [2021-11-02 23:48:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:48:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 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 184 [2021-11-02 23:48:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:48:26,103 INFO L225 Difference]: With dead ends: 66059 [2021-11-02 23:48:26,103 INFO L226 Difference]: Without dead ends: 30627 [2021-11-02 23:48:26,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:48:26,175 INFO L933 BasicCegarLoop]: 1811 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39085 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234778.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 39088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 164.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39085 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249045.50ms IncrementalHoareTripleChecker+Time [2021-11-02 23:48:26,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1811 Invalid, 39088 Unknown, 0 Unchecked, 164.17ms Time], IncrementalHoareTripleChecker [0 Valid, 39085 Invalid, 3 Unknown, 0 Unchecked, 249045.50ms Time] [2021-11-02 23:48:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30627 states. [2021-11-02 23:48:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30627 to 30627. [2021-11-02 23:48:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30627 states, 30583 states have (on average 1.2166890102344439) internal successors, (37210), 30626 states have internal predecessors, (37210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:48:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30627 states to 30627 states and 37210 transitions. [2021-11-02 23:48:27,108 INFO L78 Accepts]: Start accepts. Automaton has 30627 states and 37210 transitions. Word has length 184 [2021-11-02 23:48:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:48:27,111 INFO L470 AbstractCegarLoop]: Abstraction has 30627 states and 37210 transitions. [2021-11-02 23:48:27,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:48:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 30627 states and 37210 transitions. [2021-11-02 23:48:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-02 23:48:27,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:48:27,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:48:27,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:48:27,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-02 23:48:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:48:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash -191936469, now seen corresponding path program 1 times [2021-11-02 23:48:27,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:48:27,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206832548] [2021-11-02 23:48:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:48:27,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:48:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:48:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:48:27,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:48:27,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206832548] [2021-11-02 23:48:27,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206832548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:48:27,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:48:27,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:48:27,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598505825] [2021-11-02 23:48:27,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:48:27,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:48:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:48:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:48:27,523 INFO L87 Difference]: Start difference. First operand 30627 states and 37210 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:48:29,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:49:03,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:49:31,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:49:59,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:52:59,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:53:01,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:56:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:56:37,124 INFO L93 Difference]: Finished difference Result 84351 states and 102479 transitions. [2021-11-02 23:56:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:56:37,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 184 [2021-11-02 23:56:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:56:37,250 INFO L225 Difference]: With dead ends: 84351 [2021-11-02 23:56:37,250 INFO L226 Difference]: Without dead ends: 54080 [2021-11-02 23:56:37,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:56:37,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 28438 mSDsluCounter, 37170 mSDsCounter, 0 mSdLazyCounter, 74409 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 449136.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28438 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 509.58ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74409 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 483597.88ms IncrementalHoareTripleChecker+Time [2021-11-02 23:56:37,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28438 Valid, 0 Invalid, 74420 Unknown, 0 Unchecked, 509.58ms Time], IncrementalHoareTripleChecker [7 Valid, 74409 Invalid, 4 Unknown, 0 Unchecked, 483597.88ms Time] [2021-11-02 23:56:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54080 states. [2021-11-02 23:56:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54080 to 54010. [2021-11-02 23:56:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54010 states, 53966 states have (on average 1.2160619649408888) internal successors, (65626), 54009 states have internal predecessors, (65626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:56:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54010 states to 54010 states and 65626 transitions. [2021-11-02 23:56:38,322 INFO L78 Accepts]: Start accepts. Automaton has 54010 states and 65626 transitions. Word has length 184 [2021-11-02 23:56:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:56:38,323 INFO L470 AbstractCegarLoop]: Abstraction has 54010 states and 65626 transitions. [2021-11-02 23:56:38,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:56:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 54010 states and 65626 transitions. [2021-11-02 23:56:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-02 23:56:38,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:56:38,346 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:56:38,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:56:38,348 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-02 23:56:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:56:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash 917665190, now seen corresponding path program 1 times [2021-11-02 23:56:38,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:56:38,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118797935] [2021-11-02 23:56:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:56:38,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:56:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:56:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:56:38,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:56:38,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118797935] [2021-11-02 23:56:38,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118797935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:56:38,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:56:38,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:56:38,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927553554] [2021-11-02 23:56:38,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:56:38,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:56:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:56:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:56:38,676 INFO L87 Difference]: Start difference. First operand 54010 states and 65626 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:56:40,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:57:06,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:57:22,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15