/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:05:24,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:05:24,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:05:24,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:05:24,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:05:24,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:05:24,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:05:24,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:05:24,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:05:24,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:05:24,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:05:24,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:05:24,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:05:24,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:05:24,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:05:24,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:05:24,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:05:24,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:05:24,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:05:24,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:05:24,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:05:24,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:05:24,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:05:24,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:05:24,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:05:24,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:05:24,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:05:24,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:05:24,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:05:24,362 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:05:24,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:05:24,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:05:24,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:05:24,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:05:24,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:05:24,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:05:24,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:05:24,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:05:24,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:05:24,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:05:24,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:05:24,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:05:24,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:05:24,542 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:05:24,544 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:05:24,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-01-28 07:05:25,460 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:05:25,711 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:05:25,712 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-01-28 07:05:25,731 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31cb5250/6d0cf6ab34da4a019becb115dcceb9eb/FLAG88c041f01 [2023-01-28 07:05:25,741 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31cb5250/6d0cf6ab34da4a019becb115dcceb9eb [2023-01-28 07:05:25,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:05:25,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:05:25,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:05:25,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:05:25,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:05:25,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:05:25" (1/1) ... [2023-01-28 07:05:25,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2296fd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:25, skipping insertion in model container [2023-01-28 07:05:25,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:05:25" (1/1) ... [2023-01-28 07:05:25,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:05:25,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:05:26,202 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] [2023-01-28 07:05:26,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:05:26,253 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:05:26,304 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] [2023-01-28 07:05:26,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:05:26,417 WARN L667 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:05:26,421 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:05:26,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26 WrapperNode [2023-01-28 07:05:26,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:05:26,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:05:26,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:05:26,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:05:26,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,502 INFO L138 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 459 [2023-01-28 07:05:26,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:05:26,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:05:26,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:05:26,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:05:26,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:05:26,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:05:26,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:05:26,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:05:26,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (1/1) ... [2023-01-28 07:05:26,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:05:26,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:05:26,588 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) [2023-01-28 07:05:26,607 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 [2023-01-28 07:05:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2023-01-28 07:05:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:05:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2023-01-28 07:05:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2023-01-28 07:05:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:05:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:05:26,615 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:05:26,744 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:05:26,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:05:27,152 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:05:27,159 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:05:27,160 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-01-28 07:05:27,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:05:27 BoogieIcfgContainer [2023-01-28 07:05:27,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:05:27,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:05:27,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:05:27,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:05:27,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:05:25" (1/3) ... [2023-01-28 07:05:27,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c40bf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:05:27, skipping insertion in model container [2023-01-28 07:05:27,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:05:26" (2/3) ... [2023-01-28 07:05:27,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c40bf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:05:27, skipping insertion in model container [2023-01-28 07:05:27,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:05:27" (3/3) ... [2023-01-28 07:05:27,166 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2023-01-28 07:05:27,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:05:27,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:05:27,179 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:05:27,276 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 07:05:27,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-01-28 07:05:27,509 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-01-28 07:05:27,509 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:05:27,528 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. [2023-01-28 07:05:27,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 467 transitions, 956 flow [2023-01-28 07:05:27,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 467 transitions, 956 flow [2023-01-28 07:05:27,544 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:05:27,561 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 467 transitions, 956 flow [2023-01-28 07:05:27,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 467 transitions, 956 flow [2023-01-28 07:05:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-01-28 07:05:27,704 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-01-28 07:05:27,705 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:05:27,721 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. [2023-01-28 07:05:27,768 INFO L119 LiptonReduction]: Number of co-enabled transitions 103794 [2023-01-28 07:05:52,848 WARN L222 SmtUtils]: Spent 9.66s 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) [2023-01-28 07:06:03,009 WARN L222 SmtUtils]: Spent 10.16s 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) [2023-01-28 07:06:15,410 WARN L222 SmtUtils]: Spent 12.40s 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) [2023-01-28 07:06:25,633 WARN L222 SmtUtils]: Spent 10.22s 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) [2023-01-28 07:07:37,473 WARN L222 SmtUtils]: Spent 1.18m 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) [2023-01-28 07:08:00,402 WARN L222 SmtUtils]: Spent 22.92s 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) [2023-01-28 07:09:05,483 WARN L222 SmtUtils]: Spent 1.08m 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) [2023-01-28 07:09:36,873 WARN L222 SmtUtils]: Spent 31.39s 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) [2023-01-28 07:09:36,891 INFO L134 LiptonReduction]: Checked pairs total: 242585 [2023-01-28 07:09:36,892 INFO L136 LiptonReduction]: Total number of compositions: 447 [2023-01-28 07:09:36,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:09:36,918 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=false, 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;@61a9d671, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:09:36,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 07:09:36,955 INFO L130 PetriNetUnfolder]: 27/170 cut-off events. [2023-01-28 07:09:36,955 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:09:36,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:09:36,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:09:36,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 07:09:36,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:09:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1269267274, now seen corresponding path program 1 times [2023-01-28 07:09:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:09:36,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453302429] [2023-01-28 07:09:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:09:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:09:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:09:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:09:37,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:09:37,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453302429] [2023-01-28 07:09:37,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453302429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:09:37,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:09:37,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:09:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283554375] [2023-01-28 07:09:37,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:09:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:09:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:09:37,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:09:37,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:09:37,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 914 [2023-01-28 07:09:37,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 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) [2023-01-28 07:09:37,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:09:37,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 914 [2023-01-28 07:09:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:09:39,008 INFO L130 PetriNetUnfolder]: 11345/17510 cut-off events. [2023-01-28 07:09:39,008 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 07:09:39,021 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. [2023-01-28 07:09:39,070 INFO L137 encePairwiseOnDemand]: 897/914 looper letters, 141 selfloop transitions, 7 changer transitions 47/206 dead transitions. [2023-01-28 07:09:39,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 206 transitions, 818 flow [2023-01-28 07:09:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:09:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:09:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1460 transitions. [2023-01-28 07:09:39,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324580598103574 [2023-01-28 07:09:39,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1460 transitions. [2023-01-28 07:09:39,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1460 transitions. [2023-01-28 07:09:39,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:09:39,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1460 transitions. [2023-01-28 07:09:39,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.6666666666667) internal successors, (1460), 3 states have internal predecessors, (1460), 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) [2023-01-28 07:09:39,106 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) [2023-01-28 07:09:39,108 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) [2023-01-28 07:09:39,109 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 304 flow. Second operand 3 states and 1460 transitions. [2023-01-28 07:09:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 206 transitions, 818 flow [2023-01-28 07:09:39,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 206 transitions, 818 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:09:39,119 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 209 flow [2023-01-28 07:09:39,121 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} [2023-01-28 07:09:39,125 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2023-01-28 07:09:39,125 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 209 flow [2023-01-28 07:09:39,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 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) [2023-01-28 07:09:39,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:09:39,126 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] [2023-01-28 07:09:39,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:09:39,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 07:09:39,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:09:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1535402647, now seen corresponding path program 1 times [2023-01-28 07:09:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:09:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379127247] [2023-01-28 07:09:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:09:39,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:09:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:09:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:09:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:09:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379127247] [2023-01-28 07:09:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379127247] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:09:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757287155] [2023-01-28 07:09:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:09:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:09:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:09:39,270 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) [2023-01-28 07:09:39,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 07:09:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:09:39,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2023-01-28 07:09:39,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:09:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 07:09:39,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:09:39,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757287155] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:09:39,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:09:39,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-01-28 07:09:39,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564375574] [2023-01-28 07:09:39,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:09:39,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:09:39,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:09:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:09:39,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:09:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 914 [2023-01-28 07:09:39,455 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) [2023-01-28 07:09:39,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:09:39,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 914 [2023-01-28 07:09:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:09:41,165 INFO L130 PetriNetUnfolder]: 11197/16972 cut-off events. [2023-01-28 07:09:41,166 INFO L131 PetriNetUnfolder]: For 1480/1480 co-relation queries the response was YES. [2023-01-28 07:09:41,187 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. [2023-01-28 07:09:41,240 INFO L137 encePairwiseOnDemand]: 911/914 looper letters, 118 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-01-28 07:09:41,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 538 flow [2023-01-28 07:09:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:09:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:09:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1438 transitions. [2023-01-28 07:09:41,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524434719183078 [2023-01-28 07:09:41,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1438 transitions. [2023-01-28 07:09:41,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1438 transitions. [2023-01-28 07:09:41,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:09:41,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1438 transitions. [2023-01-28 07:09:41,246 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) [2023-01-28 07:09:41,249 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) [2023-01-28 07:09:41,251 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) [2023-01-28 07:09:41,251 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 209 flow. Second operand 3 states and 1438 transitions. [2023-01-28 07:09:41,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 538 flow [2023-01-28 07:09:41,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:09:41,254 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 212 flow [2023-01-28 07:09:41,254 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} [2023-01-28 07:09:41,255 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -29 predicate places. [2023-01-28 07:09:41,255 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 212 flow [2023-01-28 07:09:41,256 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) [2023-01-28 07:09:41,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:09:41,256 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] [2023-01-28 07:09:41,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 07:09:41,462 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 [2023-01-28 07:09:41,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 07:09:41,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:09:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -316700670, now seen corresponding path program 1 times [2023-01-28 07:09:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:09:41,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460927231] [2023-01-28 07:09:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:09:41,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:09:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:09:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:09:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:09:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460927231] [2023-01-28 07:09:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460927231] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:09:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41203298] [2023-01-28 07:09:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:09:41,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:09:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:09:41,563 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) [2023-01-28 07:09:41,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 07:09:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:09:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 07:09:41,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:09:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:09:41,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:09:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:09:41,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41203298] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:09:41,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:09:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-01-28 07:09:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627411382] [2023-01-28 07:09:41,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:09:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:09:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:09:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:09:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:09:41,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 914 [2023-01-28 07:09:41,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 423.25) internal successors, (1693), 4 states have internal predecessors, (1693), 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) [2023-01-28 07:09:41,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:09:41,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 914 [2023-01-28 07:09:41,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:09:42,172 INFO L130 PetriNetUnfolder]: 119/254 cut-off events. [2023-01-28 07:09:42,172 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 07:09:42,173 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. [2023-01-28 07:09:42,173 INFO L137 encePairwiseOnDemand]: 911/914 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2023-01-28 07:09:42,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 70 transitions, 274 flow [2023-01-28 07:09:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:09:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:09:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1738 transitions. [2023-01-28 07:09:42,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47538293216630195 [2023-01-28 07:09:42,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1738 transitions. [2023-01-28 07:09:42,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1738 transitions. [2023-01-28 07:09:42,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:09:42,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1738 transitions. [2023-01-28 07:09:42,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 434.5) internal successors, (1738), 4 states have internal predecessors, (1738), 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) [2023-01-28 07:09:42,183 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) [2023-01-28 07:09:42,185 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) [2023-01-28 07:09:42,185 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 212 flow. Second operand 4 states and 1738 transitions. [2023-01-28 07:09:42,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 70 transitions, 274 flow [2023-01-28 07:09:42,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 70 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:09:42,186 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-01-28 07:09:42,186 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} [2023-01-28 07:09:42,186 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -74 predicate places. [2023-01-28 07:09:42,187 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-01-28 07:09:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.25) internal successors, (1693), 4 states have internal predecessors, (1693), 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) [2023-01-28 07:09:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 07:09:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-01-28 07:09:42,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 07:09:42,397 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 [2023-01-28 07:09:42,399 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-01-28 07:09:42,401 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-01-28 07:09:42,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-01-28 07:09:42,505 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-01-28 07:09:42,505 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:09:42,519 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. [2023-01-28 07:09:42,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 467 transitions, 956 flow [2023-01-28 07:09:42,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 467 transitions, 956 flow [2023-01-28 07:09:42,524 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:09:42,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 467 transitions, 956 flow [2023-01-28 07:09:42,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 467 transitions, 956 flow [2023-01-28 07:09:42,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 467 transitions, 956 flow [2023-01-28 07:09:42,621 INFO L130 PetriNetUnfolder]: 109/1010 cut-off events. [2023-01-28 07:09:42,622 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:09:42,633 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. [2023-01-28 07:09:42,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 103794 [2023-01-28 07:10:45,877 WARN L222 SmtUtils]: Spent 31.28s 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) [2023-01-28 07:11:10,992 WARN L222 SmtUtils]: Spent 25.11s 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) [2023-01-28 07:11:44,869 WARN L222 SmtUtils]: Spent 33.87s 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) [2023-01-28 07:12:12,893 WARN L222 SmtUtils]: Spent 28.02s 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) [2023-01-28 07:12:12,905 INFO L134 LiptonReduction]: Checked pairs total: 244523 [2023-01-28 07:12:12,905 INFO L136 LiptonReduction]: Total number of compositions: 448 [2023-01-28 07:12:12,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 07:12:12,910 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=false, 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;@61a9d671, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:12:12,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 07:12:12,915 INFO L130 PetriNetUnfolder]: 6/57 cut-off events. [2023-01-28 07:12:12,915 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:12:12,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:12:12,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-01-28 07:12:12,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:12:12,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:12:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1698705253, now seen corresponding path program 1 times [2023-01-28 07:12:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:12:12,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093414299] [2023-01-28 07:12:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:12:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:12:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:12:12,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:12:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:12:12,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:12:12,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:12:12,973 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 07:12:12,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 07:12:12,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:12:12,974 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 07:12:12,974 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-01-28 07:12:12,974 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 07:12:12,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 07:12:13,028 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 07:12:13,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 650 places, 719 transitions, 1486 flow [2023-01-28 07:12:13,625 INFO L130 PetriNetUnfolder]: 384/3284 cut-off events. [2023-01-28 07:12:13,626 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-01-28 07:12:13,727 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. [2023-01-28 07:12:13,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 650 places, 719 transitions, 1486 flow [2023-01-28 07:12:13,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 650 places, 719 transitions, 1486 flow [2023-01-28 07:12:13,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:12:13,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 650 places, 719 transitions, 1486 flow [2023-01-28 07:12:13,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 650 places, 719 transitions, 1486 flow [2023-01-28 07:12:13,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 650 places, 719 transitions, 1486 flow [2023-01-28 07:12:14,351 INFO L130 PetriNetUnfolder]: 384/3284 cut-off events. [2023-01-28 07:12:14,351 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-01-28 07:12:14,451 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. [2023-01-28 07:12:14,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 333516 [2023-01-28 07:13:24,638 WARN L222 SmtUtils]: Spent 39.09s 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) [2023-01-28 07:14:02,174 WARN L222 SmtUtils]: Spent 37.53s 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) [2023-01-28 07:15:04,891 WARN L222 SmtUtils]: Spent 1.05m 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) [2023-01-28 07:15:37,536 WARN L222 SmtUtils]: Spent 32.64s 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) [2023-01-28 07:15:37,553 INFO L134 LiptonReduction]: Checked pairs total: 824967 [2023-01-28 07:15:37,553 INFO L136 LiptonReduction]: Total number of compositions: 681 [2023-01-28 07:15:37,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:15:37,555 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=false, 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;@61a9d671, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:15:37,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 07:15:37,569 INFO L130 PetriNetUnfolder]: 31/187 cut-off events. [2023-01-28 07:15:37,569 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 07:15:37,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:15:37,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:15:37,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 07:15:37,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:15:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1629104262, now seen corresponding path program 1 times [2023-01-28 07:15:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:15:37,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583517093] [2023-01-28 07:15:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:15:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:15:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:15:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:15:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:15:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583517093] [2023-01-28 07:15:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583517093] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:15:37,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:15:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:15:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928330412] [2023-01-28 07:15:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:15:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:15:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:15:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:15:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:15:37,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 658 out of 1400 [2023-01-28 07:15:37,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 226 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 663.0) internal successors, (1989), 3 states have internal predecessors, (1989), 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) [2023-01-28 07:15:37,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:15:37,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 658 of 1400 [2023-01-28 07:15:37,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand