./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:00:05,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:00:05,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:00:05,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:00:05,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:00:05,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:00:05,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:00:05,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:00:05,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:00:05,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:00:05,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:00:05,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:00:05,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:00:05,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:00:05,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:00:05,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:00:05,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:00:05,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:00:05,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:00:05,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:00:05,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:00:05,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:00:05,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:00:05,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:00:05,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:00:05,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:00:05,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:00:05,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:00:05,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:00:05,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:00:05,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:00:05,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:00:05,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:00:05,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:00:05,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:00:05,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:00:05,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:00:05,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:00:05,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:00:05,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:00:05,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:00:05,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:00:05,697 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:00:05,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:00:05,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:00:05,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:00:05,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:00:05,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:00:05,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:00:05,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:00:05,700 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:00:05,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:00:05,701 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:00:05,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:00:05,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:00:05,702 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:00:05,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:00:05,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:00:05,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:00:05,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:00:05,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:00:05,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:00:05,704 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:00:05,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:00:05,705 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:00:05,705 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:00:05,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:00:05,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:00:05,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:00:05,931 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:00:05,931 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:00:05,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-30 17:00:06,845 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:00:07,042 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:00:07,042 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-30 17:00:07,058 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1175516/79ead0fa1c994f6ca620029ab7ded167/FLAGad552e6fb [2023-08-30 17:00:07,073 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1175516/79ead0fa1c994f6ca620029ab7ded167 [2023-08-30 17:00:07,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:00:07,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:00:07,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:00:07,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:00:07,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:00:07,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1003207c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07, skipping insertion in model container [2023-08-30 17:00:07,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:00:07,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:00:07,546 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2023-08-30 17:00:07,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:00:07,599 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:00:07,643 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2023-08-30 17:00:07,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:00:07,752 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:00:07,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07 WrapperNode [2023-08-30 17:00:07,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:00:07,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:00:07,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:00:07,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:00:07,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,817 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 205 [2023-08-30 17:00:07,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:00:07,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:00:07,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:00:07,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:00:07,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:00:07,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:00:07,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:00:07,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:00:07,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (1/1) ... [2023-08-30 17:00:07,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:00:07,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:00:07,910 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) [2023-08-30 17:00:07,930 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 [2023-08-30 17:00:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-30 17:00:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-30 17:00:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-30 17:00:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:00:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:00:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:00:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:00:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:00:07,944 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:00:08,174 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:00:08,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:00:08,428 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:00:08,437 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:00:08,437 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 17:00:08,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:08 BoogieIcfgContainer [2023-08-30 17:00:08,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:00:08,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:00:08,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:00:08,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:00:08,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:00:07" (1/3) ... [2023-08-30 17:00:08,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677040fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:00:08, skipping insertion in model container [2023-08-30 17:00:08,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:07" (2/3) ... [2023-08-30 17:00:08,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677040fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:00:08, skipping insertion in model container [2023-08-30 17:00:08,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:08" (3/3) ... [2023-08-30 17:00:08,445 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-30 17:00:08,450 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:00:08,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:00:08,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 17:00:08,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:00:08,539 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-30 17:00:08,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 302 transitions, 634 flow [2023-08-30 17:00:08,663 INFO L130 PetriNetUnfolder]: 33/309 cut-off events. [2023-08-30 17:00:08,663 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:00:08,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 309 events. 33/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 730 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2023-08-30 17:00:08,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 302 transitions, 634 flow [2023-08-30 17:00:08,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 207 transitions, 431 flow [2023-08-30 17:00:08,679 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:00:08,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 207 transitions, 431 flow [2023-08-30 17:00:08,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 207 transitions, 431 flow [2023-08-30 17:00:08,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 207 transitions, 431 flow [2023-08-30 17:00:08,736 INFO L130 PetriNetUnfolder]: 31/296 cut-off events. [2023-08-30 17:00:08,736 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:00:08,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 296 events. 31/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 659 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2023-08-30 17:00:08,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 8910 [2023-08-30 17:00:13,467 INFO L134 LiptonReduction]: Checked pairs total: 11799 [2023-08-30 17:00:13,467 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-30 17:00:13,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:00:13,480 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@164943de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:00:13,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 17:00:13,481 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 17:00:13,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:00:13,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:13,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 17:00:13,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-30 17:00:13,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash 932, now seen corresponding path program 1 times [2023-08-30 17:00:13,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:13,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258287597] [2023-08-30 17:00:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:13,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258287597] [2023-08-30 17:00:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258287597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 17:00:13,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783235163] [2023-08-30 17:00:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:13,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:00:13,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:00:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:00:13,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 551 [2023-08-30 17:00:13,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 89 flow. Second operand has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 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) [2023-08-30 17:00:13,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:13,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 551 [2023-08-30 17:00:13,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:13,808 INFO L130 PetriNetUnfolder]: 255/399 cut-off events. [2023-08-30 17:00:13,808 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 17:00:13,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 399 events. 255/399 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1400 event pairs, 131 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 685. Up to 389 conditions per place. [2023-08-30 17:00:13,811 INFO L137 encePairwiseOnDemand]: 547/551 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-30 17:00:13,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 137 flow [2023-08-30 17:00:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:00:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:00:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 576 transitions. [2023-08-30 17:00:13,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2023-08-30 17:00:13,822 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 576 transitions. [2023-08-30 17:00:13,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 576 transitions. [2023-08-30 17:00:13,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:13,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 576 transitions. [2023-08-30 17:00:13,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 288.0) internal successors, (576), 2 states have internal predecessors, (576), 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) [2023-08-30 17:00:13,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 551.0) internal successors, (1653), 3 states have internal predecessors, (1653), 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) [2023-08-30 17:00:13,831 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 551.0) internal successors, (1653), 3 states have internal predecessors, (1653), 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) [2023-08-30 17:00:13,832 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 89 flow. Second operand 2 states and 576 transitions. [2023-08-30 17:00:13,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 137 flow [2023-08-30 17:00:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 133 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:13,836 INFO L231 Difference]: Finished difference. Result has 30 places, 32 transitions, 77 flow [2023-08-30 17:00:13,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=77, PETRI_PLACES=30, PETRI_TRANSITIONS=32} [2023-08-30 17:00:13,839 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 17:00:13,840 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 77 flow [2023-08-30 17:00:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 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) [2023-08-30 17:00:13,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:13,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:00:13,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:00:13,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-30 17:00:13,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1677484423, now seen corresponding path program 1 times [2023-08-30 17:00:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:13,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650717490] [2023-08-30 17:00:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650717490] [2023-08-30 17:00:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650717490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411819267] [2023-08-30 17:00:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:00:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:00:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:00:14,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 551 [2023-08-30 17:00:14,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 262.5) internal successors, (1050), 4 states have internal predecessors, (1050), 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) [2023-08-30 17:00:14,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 551 [2023-08-30 17:00:14,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:14,212 INFO L130 PetriNetUnfolder]: 476/744 cut-off events. [2023-08-30 17:00:14,212 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 17:00:14,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 744 events. 476/744 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2675 event pairs, 113 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 1496. Up to 308 conditions per place. [2023-08-30 17:00:14,216 INFO L137 encePairwiseOnDemand]: 542/551 looper letters, 52 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-08-30 17:00:14,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 67 transitions, 283 flow [2023-08-30 17:00:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 17:00:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 17:00:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1372 transitions. [2023-08-30 17:00:14,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980036297640653 [2023-08-30 17:00:14,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1372 transitions. [2023-08-30 17:00:14,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1372 transitions. [2023-08-30 17:00:14,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:14,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1372 transitions. [2023-08-30 17:00:14,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.4) internal successors, (1372), 5 states have internal predecessors, (1372), 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) [2023-08-30 17:00:14,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 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) [2023-08-30 17:00:14,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 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) [2023-08-30 17:00:14,226 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 77 flow. Second operand 5 states and 1372 transitions. [2023-08-30 17:00:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 67 transitions, 283 flow [2023-08-30 17:00:14,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:00:14,228 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 161 flow [2023-08-30 17:00:14,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-30 17:00:14,229 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-30 17:00:14,229 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 161 flow [2023-08-30 17:00:14,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.5) internal successors, (1050), 4 states have internal predecessors, (1050), 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) [2023-08-30 17:00:14,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:14,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:14,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:00:14,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-30 17:00:14,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1458684387, now seen corresponding path program 1 times [2023-08-30 17:00:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:14,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839530349] [2023-08-30 17:00:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839530349] [2023-08-30 17:00:14,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839530349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965844490] [2023-08-30 17:00:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:14,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 551 [2023-08-30 17:00:14,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 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) [2023-08-30 17:00:14,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 551 [2023-08-30 17:00:14,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:14,430 INFO L130 PetriNetUnfolder]: 536/820 cut-off events. [2023-08-30 17:00:14,431 INFO L131 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2023-08-30 17:00:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 820 events. 536/820 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2780 event pairs, 129 based on Foata normal form. 36/662 useless extension candidates. Maximal degree in co-relation 2175. Up to 427 conditions per place. [2023-08-30 17:00:14,434 INFO L137 encePairwiseOnDemand]: 543/551 looper letters, 48 selfloop transitions, 11 changer transitions 2/64 dead transitions. [2023-08-30 17:00:14,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 370 flow [2023-08-30 17:00:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-30 17:00:14,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081669691470054 [2023-08-30 17:00:14,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-30 17:00:14,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-30 17:00:14,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:14,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-30 17:00:14,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2023-08-30 17:00:14,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:14,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:14,461 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 161 flow. Second operand 3 states and 840 transitions. [2023-08-30 17:00:14,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 370 flow [2023-08-30 17:00:14,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:00:14,464 INFO L231 Difference]: Finished difference. Result has 42 places, 48 transitions, 267 flow [2023-08-30 17:00:14,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=48} [2023-08-30 17:00:14,465 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 17:00:14,465 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 267 flow [2023-08-30 17:00:14,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 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) [2023-08-30 17:00:14,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:14,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:14,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:00:14,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-30 17:00:14,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1636512177, now seen corresponding path program 1 times [2023-08-30 17:00:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:14,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390482297] [2023-08-30 17:00:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:14,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390482297] [2023-08-30 17:00:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390482297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288725862] [2023-08-30 17:00:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:14,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:14,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 551 [2023-08-30 17:00:14,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 48 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-08-30 17:00:14,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 551 [2023-08-30 17:00:14,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:14,671 INFO L130 PetriNetUnfolder]: 588/888 cut-off events. [2023-08-30 17:00:14,673 INFO L131 PetriNetUnfolder]: For 1217/1217 co-relation queries the response was YES. [2023-08-30 17:00:14,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 888 events. 588/888 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3110 event pairs, 239 based on Foata normal form. 24/712 useless extension candidates. Maximal degree in co-relation 2681. Up to 804 conditions per place. [2023-08-30 17:00:14,678 INFO L137 encePairwiseOnDemand]: 548/551 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-30 17:00:14,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 405 flow [2023-08-30 17:00:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 845 transitions. [2023-08-30 17:00:14,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111917725347852 [2023-08-30 17:00:14,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 845 transitions. [2023-08-30 17:00:14,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 845 transitions. [2023-08-30 17:00:14,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:14,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 845 transitions. [2023-08-30 17:00:14,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2023-08-30 17:00:14,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:14,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:14,687 INFO L175 Difference]: Start difference. First operand has 42 places, 48 transitions, 267 flow. Second operand 3 states and 845 transitions. [2023-08-30 17:00:14,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 405 flow [2023-08-30 17:00:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:00:14,693 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 260 flow [2023-08-30 17:00:14,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=41, PETRI_TRANSITIONS=49} [2023-08-30 17:00:14,694 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 17:00:14,694 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 260 flow [2023-08-30 17:00:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-08-30 17:00:14,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:14,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:14,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:00:14,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-30 17:00:14,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1736057684, now seen corresponding path program 1 times [2023-08-30 17:00:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:14,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257440922] [2023-08-30 17:00:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257440922] [2023-08-30 17:00:14,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257440922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:14,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26143083] [2023-08-30 17:00:14,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:14,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:14,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:14,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 551 [2023-08-30 17:00:14,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 49 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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) [2023-08-30 17:00:14,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 551 [2023-08-30 17:00:14,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:14,894 INFO L130 PetriNetUnfolder]: 578/872 cut-off events. [2023-08-30 17:00:14,895 INFO L131 PetriNetUnfolder]: For 898/898 co-relation queries the response was YES. [2023-08-30 17:00:14,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 872 events. 578/872 cut-off events. For 898/898 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3080 event pairs, 263 based on Foata normal form. 8/682 useless extension candidates. Maximal degree in co-relation 2651. Up to 835 conditions per place. [2023-08-30 17:00:14,898 INFO L137 encePairwiseOnDemand]: 547/551 looper letters, 45 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2023-08-30 17:00:14,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 366 flow [2023-08-30 17:00:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2023-08-30 17:00:14,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49788263762855417 [2023-08-30 17:00:14,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2023-08-30 17:00:14,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2023-08-30 17:00:14,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:14,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2023-08-30 17:00:14,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 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) [2023-08-30 17:00:14,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:14,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:14,905 INFO L175 Difference]: Start difference. First operand has 41 places, 49 transitions, 260 flow. Second operand 3 states and 823 transitions. [2023-08-30 17:00:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 366 flow [2023-08-30 17:00:14,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:00:14,907 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 271 flow [2023-08-30 17:00:14,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=43, PETRI_TRANSITIONS=49} [2023-08-30 17:00:14,908 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-30 17:00:14,908 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 271 flow [2023-08-30 17:00:14,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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) [2023-08-30 17:00:14,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:14,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:14,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:00:14,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-30 17:00:14,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash -810365268, now seen corresponding path program 1 times [2023-08-30 17:00:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:14,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783183618] [2023-08-30 17:00:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783183618] [2023-08-30 17:00:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783183618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266726430] [2023-08-30 17:00:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:14,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 551 [2023-08-30 17:00:14,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 49 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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) [2023-08-30 17:00:14,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 551 [2023-08-30 17:00:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:15,026 INFO L130 PetriNetUnfolder]: 248/395 cut-off events. [2023-08-30 17:00:15,026 INFO L131 PetriNetUnfolder]: For 568/568 co-relation queries the response was YES. [2023-08-30 17:00:15,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 395 events. 248/395 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1118 event pairs, 48 based on Foata normal form. 28/331 useless extension candidates. Maximal degree in co-relation 1116. Up to 216 conditions per place. [2023-08-30 17:00:15,027 INFO L137 encePairwiseOnDemand]: 545/551 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-30 17:00:15,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 291 flow [2023-08-30 17:00:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2023-08-30 17:00:15,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48941318814277074 [2023-08-30 17:00:15,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2023-08-30 17:00:15,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2023-08-30 17:00:15,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:15,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2023-08-30 17:00:15,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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) [2023-08-30 17:00:15,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:15,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 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) [2023-08-30 17:00:15,035 INFO L175 Difference]: Start difference. First operand has 43 places, 49 transitions, 271 flow. Second operand 3 states and 809 transitions. [2023-08-30 17:00:15,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 291 flow [2023-08-30 17:00:15,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 239 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 17:00:15,037 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-30 17:00:15,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-30 17:00:15,039 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-30 17:00:15,040 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-30 17:00:15,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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) [2023-08-30 17:00:15,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-30 17:00:15,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-30 17:00:15,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-30 17:00:15,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-30 17:00:15,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-30 17:00:15,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-30 17:00:15,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-30 17:00:15,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-30 17:00:15,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-30 17:00:15,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:00:15,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 17:00:15,049 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 17:00:15,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 302 transitions, 634 flow [2023-08-30 17:00:15,084 INFO L130 PetriNetUnfolder]: 33/309 cut-off events. [2023-08-30 17:00:15,084 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:00:15,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 309 events. 33/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 730 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2023-08-30 17:00:15,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 302 transitions, 634 flow [2023-08-30 17:00:15,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 197 transitions, 411 flow [2023-08-30 17:00:15,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:00:15,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 197 transitions, 411 flow [2023-08-30 17:00:15,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 197 transitions, 411 flow [2023-08-30 17:00:15,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 197 transitions, 411 flow [2023-08-30 17:00:15,115 INFO L130 PetriNetUnfolder]: 31/286 cut-off events. [2023-08-30 17:00:15,115 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:00:15,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 286 events. 31/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 630 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 208. Up to 11 conditions per place. [2023-08-30 17:00:15,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 8880 [2023-08-30 17:00:19,169 INFO L134 LiptonReduction]: Checked pairs total: 11859 [2023-08-30 17:00:19,169 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-30 17:00:19,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 17:00:19,171 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@164943de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:00:19,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 17:00:19,178 INFO L130 PetriNetUnfolder]: 9/36 cut-off events. [2023-08-30 17:00:19,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:00:19,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:19,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:19,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 17:00:19,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 97712462, now seen corresponding path program 1 times [2023-08-30 17:00:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:19,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662464196] [2023-08-30 17:00:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:19,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:19,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662464196] [2023-08-30 17:00:19,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662464196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:19,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:19,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957621675] [2023-08-30 17:00:19,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:19,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 538 [2023-08-30 17:00:19,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2023-08-30 17:00:19,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:19,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 538 [2023-08-30 17:00:19,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:19,290 INFO L130 PetriNetUnfolder]: 217/347 cut-off events. [2023-08-30 17:00:19,290 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 17:00:19,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 347 events. 217/347 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1214 event pairs, 90 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 581. Up to 256 conditions per place. [2023-08-30 17:00:19,291 INFO L137 encePairwiseOnDemand]: 530/538 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-30 17:00:19,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 165 flow [2023-08-30 17:00:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2023-08-30 17:00:19,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055762081784386 [2023-08-30 17:00:19,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2023-08-30 17:00:19,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2023-08-30 17:00:19,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:19,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2023-08-30 17:00:19,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 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) [2023-08-30 17:00:19,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 538.0) internal successors, (2152), 4 states have internal predecessors, (2152), 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) [2023-08-30 17:00:19,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 538.0) internal successors, (2152), 4 states have internal predecessors, (2152), 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) [2023-08-30 17:00:19,297 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 85 flow. Second operand 3 states and 816 transitions. [2023-08-30 17:00:19,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 165 flow [2023-08-30 17:00:19,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:19,298 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-30 17:00:19,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=538, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-30 17:00:19,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-08-30 17:00:19,298 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-30 17:00:19,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2023-08-30 17:00:19,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-30 17:00:19,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 17:00:19,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 17:00:19,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:00:19,299 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 17:00:19,300 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (2/2) [2023-08-30 17:00:19,300 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:00:19,300 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:00:19,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:00:19 BasicIcfg [2023-08-30 17:00:19,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:00:19,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:00:19,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:00:19,304 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:00:19,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:08" (3/4) ... [2023-08-30 17:00:19,306 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 17:00:19,309 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2023-08-30 17:00:19,309 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2023-08-30 17:00:19,312 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 17:00:19,312 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 17:00:19,312 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 17:00:19,312 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 17:00:19,331 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:00:19,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:00:19,332 INFO L158 Benchmark]: Toolchain (without parser) took 12256.29ms. Allocated memory was 65.0MB in the beginning and 218.1MB in the end (delta: 153.1MB). Free memory was 28.2MB in the beginning and 66.1MB in the end (delta: -37.9MB). Peak memory consumption was 113.9MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,332 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:00:19,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 674.96ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 28.0MB in the beginning and 38.6MB in the end (delta: -10.6MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.80ms. Allocated memory is still 83.9MB. Free memory was 38.6MB in the beginning and 35.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,333 INFO L158 Benchmark]: Boogie Preprocessor took 59.89ms. Allocated memory is still 83.9MB. Free memory was 35.1MB in the beginning and 32.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,333 INFO L158 Benchmark]: RCFGBuilder took 560.91ms. Allocated memory is still 83.9MB. Free memory was 32.3MB in the beginning and 33.3MB in the end (delta: -989.0kB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,333 INFO L158 Benchmark]: TraceAbstraction took 10862.71ms. Allocated memory was 83.9MB in the beginning and 218.1MB in the end (delta: 134.2MB). Free memory was 32.4MB in the beginning and 69.2MB in the end (delta: -36.8MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,334 INFO L158 Benchmark]: Witness Printer took 27.99ms. Allocated memory is still 218.1MB. Free memory was 69.2MB in the beginning and 66.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:19,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 674.96ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 28.0MB in the beginning and 38.6MB in the end (delta: -10.6MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.80ms. Allocated memory is still 83.9MB. Free memory was 38.6MB in the beginning and 35.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.89ms. Allocated memory is still 83.9MB. Free memory was 35.1MB in the beginning and 32.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 560.91ms. Allocated memory is still 83.9MB. Free memory was 32.3MB in the beginning and 33.3MB in the end (delta: -989.0kB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10862.71ms. Allocated memory was 83.9MB in the beginning and 218.1MB in the end (delta: 134.2MB). Free memory was 32.4MB in the beginning and 69.2MB in the end (delta: -36.8MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. * Witness Printer took 27.99ms. Allocated memory is still 218.1MB. Free memory was 69.2MB in the beginning and 66.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 192 PlacesBefore, 34 PlacesAfterwards, 207 TransitionsBefore, 36 TransitionsAfterwards, 8910 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 134 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 44 ConcurrentYvCompositions, 13 ChoiceCompositions, 249 TotalNumberOfCompositions, 11799 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9610, independent: 9467, independent conditional: 0, independent unconditional: 9467, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5344, independent: 5296, independent conditional: 0, independent unconditional: 5296, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9610, independent: 4171, independent conditional: 0, independent unconditional: 4171, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 5344, unknown conditional: 0, unknown unconditional: 5344] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 182 PlacesBefore, 31 PlacesAfterwards, 197 TransitionsBefore, 34 TransitionsAfterwards, 8880 CoEnabledTransitionPairs, 8 FixpointIterations, 43 TrivialSequentialCompositions, 133 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 43 ConcurrentYvCompositions, 12 ChoiceCompositions, 236 TotalNumberOfCompositions, 11859 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9679, independent: 9527, independent conditional: 0, independent unconditional: 9527, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5345, independent: 5297, independent conditional: 0, independent unconditional: 5297, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9679, independent: 4230, independent conditional: 0, independent unconditional: 4230, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 5345, unknown conditional: 0, unknown unconditional: 5345] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 107, Positive conditional cache size: 0, Positive unconditional cache size: 107, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 297 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 214 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 538 IncrementalHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 1 mSDtfsCounter, 538 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 297 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 74 IncrementalHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 2 mSDtfsCounter, 74 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 17:00:19,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE