./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.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/pthread-complex/bounded_buffer.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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --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 17:00:42,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:00:42,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:00:42,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:00:42,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:00:42,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:00:42,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:00:42,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:00:42,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:00:42,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:00:42,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:00:42,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:00:42,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:00:42,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:00:42,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:00:42,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:00:42,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:00:42,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:00:42,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:00:42,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:00:42,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:00:42,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:00:42,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:00:42,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:00:42,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:00:42,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:00:42,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:00:42,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:00:42,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:00:42,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:00:42,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:00:42,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:00:42,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:00:42,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:00:42,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:00:42,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:00:42,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:00:42,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:00:42,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:00:42,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:00:42,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:00:42,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:00:42,696 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:00:42,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:00:42,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:00:42,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:00:42,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:00:42,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:00:42,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:00:42,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:00:42,699 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:00:42,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:00:42,700 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:00:42,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:00:42,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:00:42,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:00:42,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:00:42,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:00:42,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:00:42,701 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:00:42,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:00:42,702 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:00:42,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:00:42,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:00:42,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:00:42,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:00:42,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:00:42,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:00:42,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:00:42,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:00:42,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:00:42,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:00:42,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:00:42,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:00:42,704 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:00:42,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:00:42,705 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:00:42,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:00:42,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:00:43,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:00:43,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:00:43,012 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:00:43,017 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:00:43,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-08-30 17:00:44,438 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:00:44,825 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:00:44,825 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-08-30 17:00:44,849 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0877c9f32/082bb2e8b4aa4302b9395ab391cce057/FLAGc12c73bc0 [2023-08-30 17:00:44,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0877c9f32/082bb2e8b4aa4302b9395ab391cce057 [2023-08-30 17:00:44,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:00:44,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:00:44,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:00:44,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:00:44,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:00:44,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:00:44" (1/1) ... [2023-08-30 17:00:44,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4c4801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:44, skipping insertion in model container [2023-08-30 17:00:44,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:00:44" (1/1) ... [2023-08-30 17:00:44,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:00:44,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:00:45,683 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i[70002,70015] [2023-08-30 17:00:45,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:00:45,750 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:00:45,801 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i[70002,70015] [2023-08-30 17:00:45,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:00:45,921 WARN L667 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:00:45,926 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:00:45,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45 WrapperNode [2023-08-30 17:00:45,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:00:45,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:00:45,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:00:45,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:00:45,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:45,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,021 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 459 [2023-08-30 17:00:46,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:00:46,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:00:46,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:00:46,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:00:46,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:00:46,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:00:46,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:00:46,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:00:46,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (1/1) ... [2023-08-30 17:00:46,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:00:46,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:00:46,117 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 17:00:46,142 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 17:00:46,153 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2023-08-30 17:00:46,153 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2023-08-30 17:00:46,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:00:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:00:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:00:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:00:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-08-30 17:00:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:00:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:00:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:00:46,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:00:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:00:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 17:00:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2023-08-30 17:00:46,157 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2023-08-30 17:00:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:00:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:00:46,159 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 17:00:46,410 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:00:46,412 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:00:46,979 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:00:46,996 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:00:46,996 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-30 17:00:46,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:46 BoogieIcfgContainer [2023-08-30 17:00:47,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:00:47,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:00:47,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:00:47,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:00:47,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:00:44" (1/3) ... [2023-08-30 17:00:47,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2903478f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:00:47, skipping insertion in model container [2023-08-30 17:00:47,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:45" (2/3) ... [2023-08-30 17:00:47,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2903478f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:00:47, skipping insertion in model container [2023-08-30 17:00:47,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:46" (3/3) ... [2023-08-30 17:00:47,008 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2023-08-30 17:00:47,015 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:00:47,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:00:47,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 17:00:47,025 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:00:47,165 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 17:00:47,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-08-30 17:00:47,480 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-08-30 17:00:47,481 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 17:00:47,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 1010 events. 109/1010 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5984 event pairs, 0 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 534. Up to 16 conditions per place. [2023-08-30 17:00:47,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 467 transitions, 956 flow [2023-08-30 17:00:47,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 467 transitions, 956 flow [2023-08-30 17:00:47,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:00:47,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 467 transitions, 956 flow [2023-08-30 17:00:47,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 467 transitions, 956 flow [2023-08-30 17:00:47,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-08-30 17:00:47,724 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-08-30 17:00:47,725 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 17:00:47,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 1010 events. 109/1010 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5984 event pairs, 0 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 534. Up to 16 conditions per place. [2023-08-30 17:00:47,800 INFO L119 LiptonReduction]: Number of co-enabled transitions 103794 [2023-08-30 17:01:15,197 WARN L222 SmtUtils]: Spent 10.08s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:01:25,969 WARN L222 SmtUtils]: Spent 10.77s on a formula simplification that was a NOOP. DAG size: 185 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:01:38,666 WARN L222 SmtUtils]: Spent 12.69s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:01:49,048 WARN L222 SmtUtils]: Spent 10.38s on a formula simplification that was a NOOP. DAG size: 185 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:03:04,143 WARN L222 SmtUtils]: Spent 1.23m on a formula simplification. DAG size of input: 309 DAG size of output: 274 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:03:29,052 WARN L222 SmtUtils]: Spent 24.91s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:04:35,669 WARN L222 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 322 DAG size of output: 282 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:05:06,158 WARN L222 SmtUtils]: Spent 30.49s on a formula simplification that was a NOOP. DAG size: 269 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:05:06,180 INFO L134 LiptonReduction]: Checked pairs total: 242585 [2023-08-30 17:05:06,181 INFO L136 LiptonReduction]: Total number of compositions: 447 [2023-08-30 17:05:06,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:05:06,208 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;@3e16aa75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:05:06,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 17:05:06,247 INFO L130 PetriNetUnfolder]: 26/168 cut-off events. [2023-08-30 17:05:06,248 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 17:05:06,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:05:06,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:05:06,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 17:05:06,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:05:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1269267274, now seen corresponding path program 1 times [2023-08-30 17:05:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:05:06,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924892603] [2023-08-30 17:05:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:05:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:05:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:05:06,647 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 17:05:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:05:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924892603] [2023-08-30 17:05:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924892603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:05:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:05:06,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:05:06,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799522518] [2023-08-30 17:05:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:05:06,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:05:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:05:06,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:05:06,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:05:06,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 914 [2023-08-30 17:05:06,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 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 17:05:06,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:05:06,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 914 [2023-08-30 17:05:06,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:05:08,894 INFO L130 PetriNetUnfolder]: 11345/17510 cut-off events. [2023-08-30 17:05:08,894 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 17:05:08,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34755 conditions, 17510 events. 11345/17510 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 113972 event pairs, 3400 based on Foata normal form. 383/14243 useless extension candidates. Maximal degree in co-relation 33898. Up to 9635 conditions per place. [2023-08-30 17:05:09,066 INFO L137 encePairwiseOnDemand]: 897/914 looper letters, 141 selfloop transitions, 7 changer transitions 47/206 dead transitions. [2023-08-30 17:05:09,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 206 transitions, 818 flow [2023-08-30 17:05:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:05:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:05:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1508 transitions. [2023-08-30 17:05:09,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549963530269876 [2023-08-30 17:05:09,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1508 transitions. [2023-08-30 17:05:09,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1508 transitions. [2023-08-30 17:05:09,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:05:09,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1508 transitions. [2023-08-30 17:05:09,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 502.6666666666667) internal successors, (1508), 3 states have internal predecessors, (1508), 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 17:05:09,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 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 17:05:09,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 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 17:05:09,144 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 304 flow. Second operand 3 states and 1508 transitions. [2023-08-30 17:05:09,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 206 transitions, 818 flow [2023-08-30 17:05:09,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 818 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:05:09,198 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 209 flow [2023-08-30 17:05:09,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2023-08-30 17:05:09,202 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2023-08-30 17:05:09,202 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 209 flow [2023-08-30 17:05:09,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 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 17:05:09,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:05:09,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:05:09,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:05:09,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 17:05:09,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:05:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1535402647, now seen corresponding path program 1 times [2023-08-30 17:05:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:05:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690629579] [2023-08-30 17:05:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:05:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:05:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:05:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:05:09,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:05:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690629579] [2023-08-30 17:05:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690629579] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:05:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432145147] [2023-08-30 17:05:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:05:09,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:05:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:05:09,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:05:09,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:05:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:05:09,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 17:05:09,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:05:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 17:05:09,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:05:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432145147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:05:09,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:05:09,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 17:05:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927590374] [2023-08-30 17:05:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:05:09,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:05:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:05:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:05:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:05:09,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 914 [2023-08-30 17:05:09,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 445.6666666666667) internal successors, (1337), 3 states have internal predecessors, (1337), 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 17:05:09,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:05:09,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 914 [2023-08-30 17:05:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:05:11,787 INFO L130 PetriNetUnfolder]: 11197/16972 cut-off events. [2023-08-30 17:05:11,787 INFO L131 PetriNetUnfolder]: For 1480/1480 co-relation queries the response was YES. [2023-08-30 17:05:11,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34665 conditions, 16972 events. 11197/16972 cut-off events. For 1480/1480 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 100638 event pairs, 8267 based on Foata normal form. 0/14290 useless extension candidates. Maximal degree in co-relation 33872. Up to 15678 conditions per place. [2023-08-30 17:05:11,858 INFO L137 encePairwiseOnDemand]: 911/914 looper letters, 118 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-30 17:05:11,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 538 flow [2023-08-30 17:05:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:05:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:05:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1438 transitions. [2023-08-30 17:05:11,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524434719183078 [2023-08-30 17:05:11,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1438 transitions. [2023-08-30 17:05:11,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1438 transitions. [2023-08-30 17:05:11,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:05:11,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1438 transitions. [2023-08-30 17:05:11,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 479.3333333333333) internal successors, (1438), 3 states have internal predecessors, (1438), 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 17:05:11,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 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 17:05:11,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 914.0) internal successors, (3656), 4 states have internal predecessors, (3656), 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 17:05:11,875 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 209 flow. Second operand 3 states and 1438 transitions. [2023-08-30 17:05:11,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 538 flow [2023-08-30 17:05:11,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:05:11,881 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 212 flow [2023-08-30 17:05:11,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-08-30 17:05:11,883 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -29 predicate places. [2023-08-30 17:05:11,883 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 212 flow [2023-08-30 17:05:11,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.6666666666667) internal successors, (1337), 3 states have internal predecessors, (1337), 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 17:05:11,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:05:11,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:05:11,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 17:05:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:05:12,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 17:05:12,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:05:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash -316700670, now seen corresponding path program 1 times [2023-08-30 17:05:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:05:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179785901] [2023-08-30 17:05:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:05:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:05:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:05:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:05:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:05:12,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179785901] [2023-08-30 17:05:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179785901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:05:12,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116858790] [2023-08-30 17:05:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:05:12,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:05:12,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:05:12,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:05:12,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 17:05:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:05:12,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 17:05:12,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:05:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:05:12,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:05:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:05:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116858790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:05:12,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:05:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-30 17:05:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77704869] [2023-08-30 17:05:12,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:05:12,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:05:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:05:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:05:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:05:12,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 914 [2023-08-30 17:05:12,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 435.25) internal successors, (1741), 4 states have internal predecessors, (1741), 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 17:05:12,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:05:12,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 914 [2023-08-30 17:05:12,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:05:12,811 INFO L130 PetriNetUnfolder]: 119/254 cut-off events. [2023-08-30 17:05:12,811 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 17:05:12,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 254 events. 119/254 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 832 event pairs, 45 based on Foata normal form. 22/241 useless extension candidates. Maximal degree in co-relation 510. Up to 200 conditions per place. [2023-08-30 17:05:12,812 INFO L137 encePairwiseOnDemand]: 911/914 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2023-08-30 17:05:12,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 70 transitions, 274 flow [2023-08-30 17:05:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:05:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:05:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1786 transitions. [2023-08-30 17:05:12,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885120350109409 [2023-08-30 17:05:12,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1786 transitions. [2023-08-30 17:05:12,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1786 transitions. [2023-08-30 17:05:12,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:05:12,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1786 transitions. [2023-08-30 17:05:12,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 446.5) internal successors, (1786), 4 states have internal predecessors, (1786), 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 17:05:12,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 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 17:05:12,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 914.0) internal successors, (4570), 5 states have internal predecessors, (4570), 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 17:05:12,830 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 212 flow. Second operand 4 states and 1786 transitions. [2023-08-30 17:05:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 70 transitions, 274 flow [2023-08-30 17:05:12,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 70 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:05:12,832 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-30 17:05:12,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=914, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-30 17:05:12,833 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -74 predicate places. [2023-08-30 17:05:12,833 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-30 17:05:12,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 435.25) internal successors, (1741), 4 states have internal predecessors, (1741), 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 17:05:12,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-30 17:05:12,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-30 17:05:12,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:05:13,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 17:05:13,042 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 17:05:13,044 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-30 17:05:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-08-30 17:05:13,167 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-08-30 17:05:13,168 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 17:05:13,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 1010 events. 109/1010 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5984 event pairs, 0 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 534. Up to 16 conditions per place. [2023-08-30 17:05:13,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 467 transitions, 956 flow [2023-08-30 17:05:13,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 467 transitions, 956 flow [2023-08-30 17:05:13,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:05:13,187 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 467 transitions, 956 flow [2023-08-30 17:05:13,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 467 transitions, 956 flow [2023-08-30 17:05:13,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-08-30 17:05:13,286 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-08-30 17:05:13,286 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 17:05:13,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 1010 events. 109/1010 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5984 event pairs, 0 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 534. Up to 16 conditions per place. [2023-08-30 17:05:13,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 103794 [2023-08-30 17:06:15,696 WARN L222 SmtUtils]: Spent 29.25s on a formula simplification that was a NOOP. DAG size: 271 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:06:40,492 WARN L222 SmtUtils]: Spent 24.79s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:07:10,665 WARN L222 SmtUtils]: Spent 30.17s on a formula simplification that was a NOOP. DAG size: 274 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:07:40,240 WARN L222 SmtUtils]: Spent 29.57s on a formula simplification that was a NOOP. DAG size: 266 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:07:40,252 INFO L134 LiptonReduction]: Checked pairs total: 244523 [2023-08-30 17:07:40,252 INFO L136 LiptonReduction]: Total number of compositions: 448 [2023-08-30 17:07:40,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 17:07:40,255 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;@3e16aa75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:07:40,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 17:07:40,261 INFO L130 PetriNetUnfolder]: 6/57 cut-off events. [2023-08-30 17:07:40,261 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:07:40,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:07:40,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-08-30 17:07:40,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 17:07:40,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:07:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1698705253, now seen corresponding path program 1 times [2023-08-30 17:07:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:07:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215997383] [2023-08-30 17:07:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:07:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:07:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:07:40,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 17:07:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:07:40,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 17:07:40,352 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 17:07:40,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-30 17:07:40,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 17:07:40,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:07:40,353 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 17:07:40,354 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-30 17:07:40,354 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 17:07:40,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 17:07:40,424 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 17:07:40,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 650 places, 719 transitions, 1486 flow [2023-08-30 17:07:41,140 INFO L130 PetriNetUnfolder]: 384/3284 cut-off events. [2023-08-30 17:07:41,140 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 17:07:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 3284 events. 384/3284 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 26182 event pairs, 2 based on Foata normal form. 0/2907 useless extension candidates. Maximal degree in co-relation 1846. Up to 64 conditions per place. [2023-08-30 17:07:41,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 650 places, 719 transitions, 1486 flow [2023-08-30 17:07:41,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 650 places, 719 transitions, 1486 flow [2023-08-30 17:07:41,260 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:07:41,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 650 places, 719 transitions, 1486 flow [2023-08-30 17:07:41,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 650 places, 719 transitions, 1486 flow [2023-08-30 17:07:41,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 650 places, 719 transitions, 1486 flow [2023-08-30 17:07:42,012 INFO L130 PetriNetUnfolder]: 384/3284 cut-off events. [2023-08-30 17:07:42,013 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 17:07:42,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 3284 events. 384/3284 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 26182 event pairs, 2 based on Foata normal form. 0/2907 useless extension candidates. Maximal degree in co-relation 1846. Up to 64 conditions per place. [2023-08-30 17:07:42,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 333516 [2023-08-30 17:08:52,334 WARN L222 SmtUtils]: Spent 37.48s on a formula simplification that was a NOOP. DAG size: 271 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:09:33,245 WARN L222 SmtUtils]: Spent 40.91s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:10:40,747 WARN L222 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 277 DAG size of output: 275 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:11:14,005 WARN L222 SmtUtils]: Spent 33.25s on a formula simplification that was a NOOP. DAG size: 266 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:11:14,018 INFO L134 LiptonReduction]: Checked pairs total: 824967 [2023-08-30 17:11:14,018 INFO L136 LiptonReduction]: Total number of compositions: 681 [2023-08-30 17:11:14,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:11:14,020 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;@3e16aa75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:11:14,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 17:11:14,035 INFO L130 PetriNetUnfolder]: 30/184 cut-off events. [2023-08-30 17:11:14,035 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 17:11:14,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:14,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:11:14,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 17:11:14,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1629104262, now seen corresponding path program 1 times [2023-08-30 17:11:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:11:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841113649] [2023-08-30 17:11:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:11:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:11:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:11:14,095 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 17:11:14,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:11:14,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841113649] [2023-08-30 17:11:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841113649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:14,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:11:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943401013] [2023-08-30 17:11:14,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:11:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:11:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:11:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:11:14,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 674 out of 1400 [2023-08-30 17:11:14,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 226 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 679.0) internal successors, (2037), 3 states have internal predecessors, (2037), 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 17:11:14,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:14,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 674 of 1400 [2023-08-30 17:11:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand