/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:39:15,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:39:15,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:39:15,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:39:15,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:39:15,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:39:15,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:39:15,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:39:15,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:39:15,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:39:15,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:39:15,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:39:15,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:39:15,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:39:15,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:39:15,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:39:15,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:39:15,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:39:15,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:39:15,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:39:15,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:39:15,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:39:15,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:39:15,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:39:15,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:39:15,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:39:15,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:39:15,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:39:15,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:39:15,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:39:15,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:39:15,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:39:15,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:39:15,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:39:15,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:39:15,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:39:15,686 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 [2023-01-27 23:39:15,699 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:39:15,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:39:15,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:39:15,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:39:15,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:39:15,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:39:15,700 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:39:15,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:39:15,700 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:39:15,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:39:15,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:39:15,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:15,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:39:15,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:39:15,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:39:15,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:39:15,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:39:15,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:39:15,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:39:15,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:39:15,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:39:15,854 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:39:15,855 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:39:15,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-01-27 23:39:16,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:39:17,067 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:39:17,080 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-01-27 23:39:17,096 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3508a758/7628529ee44f48a1a43deeb4b3fbb54c/FLAGfd941ed80 [2023-01-27 23:39:17,105 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3508a758/7628529ee44f48a1a43deeb4b3fbb54c [2023-01-27 23:39:17,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:39:17,108 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:39:17,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:39:17,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:39:17,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5ffd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:39:17,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:39:17,412 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/queue_longest.i[43296,43309] [2023-01-27 23:39:17,419 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/queue_longest.i[43503,43516] [2023-01-27 23:39:17,423 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/queue_longest.i[43783,43796] [2023-01-27 23:39:17,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,440 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:39:17,477 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/queue_longest.i[43296,43309] [2023-01-27 23:39:17,478 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/queue_longest.i[43503,43516] [2023-01-27 23:39:17,480 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/queue_longest.i[43783,43796] [2023-01-27 23:39:17,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,555 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:39:17,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17 WrapperNode [2023-01-27 23:39:17,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:39:17,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:39:17,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,612 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-01-27 23:39:17,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:39:17,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:39:17,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:39:17,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:39:17,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:39:17,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:17,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:17,694 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) [2023-01-27 23:39:17,732 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 [2023-01-27 23:39:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:39:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:39:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:39:17,747 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:39:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:39:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:39:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:39:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:39:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:39:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:39:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:39:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:39:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:39:17,753 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:39:17,852 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:39:17,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:39:18,144 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:39:18,153 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:39:18,153 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:39:18,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:18 BoogieIcfgContainer [2023-01-27 23:39:18,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:39:18,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:39:18,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:39:18,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:39:18,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:39:17" (1/3) ... [2023-01-27 23:39:18,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ca5afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:18, skipping insertion in model container [2023-01-27 23:39:18,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (2/3) ... [2023-01-27 23:39:18,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ca5afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:18, skipping insertion in model container [2023-01-27 23:39:18,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:18" (3/3) ... [2023-01-27 23:39:18,161 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-01-27 23:39:18,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:39:18,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 23:39:18,173 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:39:18,249 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:39:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-01-27 23:39:18,350 INFO L130 PetriNetUnfolder]: 15/256 cut-off events. [2023-01-27 23:39:18,350 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-01-27 23:39:18,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-01-27 23:39:18,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,367 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:39:18,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,431 INFO L130 PetriNetUnfolder]: 15/247 cut-off events. [2023-01-27 23:39:18,431 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:39:18,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-01-27 23:39:18,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-01-27 23:39:24,001 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-01-27 23:39:24,001 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-01-27 23:39:24,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:39:24,030 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;@21b9fc6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:39:24,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 23:39:24,031 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 23:39:24,031 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:39:24,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:24,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 23:39:24,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:24,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-01-27 23:39:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:24,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069323837] [2023-01-27 23:39:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069323837] [2023-01-27 23:39:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069323837] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:24,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:24,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 23:39:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688641904] [2023-01-27 23:39:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:24,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 23:39:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:24,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 23:39:24,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 23:39:24,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-01-27 23:39:24,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 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) [2023-01-27 23:39:24,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:24,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-01-27 23:39:24,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:24,342 INFO L130 PetriNetUnfolder]: 1540/2645 cut-off events. [2023-01-27 23:39:24,342 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-27 23:39:24,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-01-27 23:39:24,353 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-01-27 23:39:24,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-01-27 23:39:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 23:39:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 23:39:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-01-27 23:39:24,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-01-27 23:39:24,369 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-01-27 23:39:24,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-01-27 23:39:24,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:24,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-01-27 23:39:24,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 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) [2023-01-27 23:39:24,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 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) [2023-01-27 23:39:24,386 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 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) [2023-01-27 23:39:24,387 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-01-27 23:39:24,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-01-27 23:39:24,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:39:24,392 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-01-27 23:39:24,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-01-27 23:39:24,395 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-01-27 23:39:24,395 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-01-27 23:39:24,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 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) [2023-01-27 23:39:24,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:24,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:24,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:39:24,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:24,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-01-27 23:39:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:24,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353159423] [2023-01-27 23:39:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:24,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353159423] [2023-01-27 23:39:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353159423] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:24,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:24,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:24,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366587791] [2023-01-27 23:39:24,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:24,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:24,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:24,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-01-27 23:39:24,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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) [2023-01-27 23:39:24,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:24,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-01-27 23:39:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:24,899 INFO L130 PetriNetUnfolder]: 1508/2611 cut-off events. [2023-01-27 23:39:24,899 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:24,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-01-27 23:39:24,908 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-01-27 23:39:24,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-01-27 23:39:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-01-27 23:39:24,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560253699788583 [2023-01-27 23:39:24,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-01-27 23:39:24,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-01-27 23:39:24,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:24,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-01-27 23:39:24,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2023-01-27 23:39:24,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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) [2023-01-27 23:39:24,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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) [2023-01-27 23:39:24,915 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 789 transitions. [2023-01-27 23:39:24,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-01-27 23:39:24,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:24,917 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-01-27 23:39:24,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-01-27 23:39:24,918 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-01-27 23:39:24,919 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-01-27 23:39:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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) [2023-01-27 23:39:24,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:24,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:24,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:39:24,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:24,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-01-27 23:39:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030548613] [2023-01-27 23:39:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:25,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:25,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030548613] [2023-01-27 23:39:25,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030548613] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:39:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773446042] [2023-01-27 23:39:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:39:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:39:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:39:25,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 473 [2023-01-27 23:39:25,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 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) [2023-01-27 23:39:25,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:25,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 473 [2023-01-27 23:39:25,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:25,852 INFO L130 PetriNetUnfolder]: 1608/2744 cut-off events. [2023-01-27 23:39:25,852 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-27 23:39:25,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-01-27 23:39:25,862 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 58 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2023-01-27 23:39:25,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-01-27 23:39:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:39:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:39:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 991 transitions. [2023-01-27 23:39:25,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41902748414376323 [2023-01-27 23:39:25,865 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 991 transitions. [2023-01-27 23:39:25,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 991 transitions. [2023-01-27 23:39:25,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:25,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 991 transitions. [2023-01-27 23:39:25,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-01-27 23:39:25,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 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) [2023-01-27 23:39:25,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 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) [2023-01-27 23:39:25,872 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 5 states and 991 transitions. [2023-01-27 23:39:25,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-01-27 23:39:25,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:39:25,874 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 173 flow [2023-01-27 23:39:25,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-01-27 23:39:25,875 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-01-27 23:39:25,875 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 173 flow [2023-01-27 23:39:25,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 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) [2023-01-27 23:39:25,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:25,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:39:25,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:25,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-01-27 23:39:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511382565] [2023-01-27 23:39:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:26,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:26,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511382565] [2023-01-27 23:39:26,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511382565] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:26,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:26,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:39:26,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837652634] [2023-01-27 23:39:26,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:26,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:39:26,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:26,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:39:26,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:39:26,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-01-27 23:39:26,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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) [2023-01-27 23:39:26,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:26,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-01-27 23:39:26,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:26,540 INFO L130 PetriNetUnfolder]: 1839/3131 cut-off events. [2023-01-27 23:39:26,541 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-27 23:39:26,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 3131 events. 1839/3131 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15156 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6320. Up to 2548 conditions per place. [2023-01-27 23:39:26,553 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2023-01-27 23:39:26,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 526 flow [2023-01-27 23:39:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2023-01-27 23:39:26,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42212825933756165 [2023-01-27 23:39:26,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2023-01-27 23:39:26,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2023-01-27 23:39:26,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:26,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2023-01-27 23:39:26,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 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) [2023-01-27 23:39:26,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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) [2023-01-27 23:39:26,569 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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) [2023-01-27 23:39:26,569 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 173 flow. Second operand 6 states and 1198 transitions. [2023-01-27 23:39:26,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 526 flow [2023-01-27 23:39:26,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:26,575 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 263 flow [2023-01-27 23:39:26,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2023-01-27 23:39:26,576 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-01-27 23:39:26,576 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 263 flow [2023-01-27 23:39:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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) [2023-01-27 23:39:26,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:26,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:26,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:39:26,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:26,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-01-27 23:39:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832581604] [2023-01-27 23:39:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:26,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:26,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832581604] [2023-01-27 23:39:26,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832581604] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:26,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:26,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:39:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135723497] [2023-01-27 23:39:26,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:26,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:39:26,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:39:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:39:26,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-01-27 23:39:26,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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) [2023-01-27 23:39:26,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:26,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-01-27 23:39:26,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:27,443 INFO L130 PetriNetUnfolder]: 1970/3344 cut-off events. [2023-01-27 23:39:27,443 INFO L131 PetriNetUnfolder]: For 620/620 co-relation queries the response was YES. [2023-01-27 23:39:27,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 3344 events. 1970/3344 cut-off events. For 620/620 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 16365 event pairs, 834 based on Foata normal form. 17/3012 useless extension candidates. Maximal degree in co-relation 7227. Up to 2536 conditions per place. [2023-01-27 23:39:27,455 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2023-01-27 23:39:27,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 622 flow [2023-01-27 23:39:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2023-01-27 23:39:27,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42177589852008457 [2023-01-27 23:39:27,458 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1197 transitions. [2023-01-27 23:39:27,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1197 transitions. [2023-01-27 23:39:27,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:27,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1197 transitions. [2023-01-27 23:39:27,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 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) [2023-01-27 23:39:27,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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) [2023-01-27 23:39:27,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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) [2023-01-27 23:39:27,465 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 263 flow. Second operand 6 states and 1197 transitions. [2023-01-27 23:39:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 622 flow [2023-01-27 23:39:27,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:27,469 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 342 flow [2023-01-27 23:39:27,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-01-27 23:39:27,469 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-01-27 23:39:27,470 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 342 flow [2023-01-27 23:39:27,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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) [2023-01-27 23:39:27,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:27,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:27,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:39:27,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:27,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:27,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-01-27 23:39:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:27,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252165008] [2023-01-27 23:39:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252165008] [2023-01-27 23:39:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252165008] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 23:39:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701939298] [2023-01-27 23:39:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:27,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 23:39:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 23:39:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 23:39:27,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:27,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 342 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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) [2023-01-27 23:39:27,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:27,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:28,406 INFO L130 PetriNetUnfolder]: 2695/4564 cut-off events. [2023-01-27 23:39:28,406 INFO L131 PetriNetUnfolder]: For 1308/1308 co-relation queries the response was YES. [2023-01-27 23:39:28,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 4564 events. 2695/4564 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24051 event pairs, 579 based on Foata normal form. 0/4082 useless extension candidates. Maximal degree in co-relation 10118. Up to 2481 conditions per place. [2023-01-27 23:39:28,422 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 25 changer transitions 3/192 dead transitions. [2023-01-27 23:39:28,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 192 transitions, 970 flow [2023-01-27 23:39:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1739 transitions. [2023-01-27 23:39:28,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085036410617806 [2023-01-27 23:39:28,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1739 transitions. [2023-01-27 23:39:28,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1739 transitions. [2023-01-27 23:39:28,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:28,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1739 transitions. [2023-01-27 23:39:28,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.22222222222223) internal successors, (1739), 9 states have internal predecessors, (1739), 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) [2023-01-27 23:39:28,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:28,433 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:28,433 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 342 flow. Second operand 9 states and 1739 transitions. [2023-01-27 23:39:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 192 transitions, 970 flow [2023-01-27 23:39:28,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 192 transitions, 960 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:28,440 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 455 flow [2023-01-27 23:39:28,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2023-01-27 23:39:28,441 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-01-27 23:39:28,441 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 455 flow [2023-01-27 23:39:28,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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) [2023-01-27 23:39:28,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:28,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:28,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:39:28,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:28,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-01-27 23:39:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:28,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542488019] [2023-01-27 23:39:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:28,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542488019] [2023-01-27 23:39:28,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542488019] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:28,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767039498] [2023-01-27 23:39:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:28,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:28,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:28,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 455 flow. Second operand has 10 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 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) [2023-01-27 23:39:28,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:28,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:29,364 INFO L130 PetriNetUnfolder]: 2672/4539 cut-off events. [2023-01-27 23:39:29,365 INFO L131 PetriNetUnfolder]: For 2319/2319 co-relation queries the response was YES. [2023-01-27 23:39:29,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 4539 events. 2672/4539 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23922 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10700. Up to 4236 conditions per place. [2023-01-27 23:39:29,385 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-01-27 23:39:29,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 113 transitions, 737 flow [2023-01-27 23:39:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1647 transitions. [2023-01-27 23:39:29,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386892177589852 [2023-01-27 23:39:29,388 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1647 transitions. [2023-01-27 23:39:29,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1647 transitions. [2023-01-27 23:39:29,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:29,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1647 transitions. [2023-01-27 23:39:29,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 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) [2023-01-27 23:39:29,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:29,395 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:29,396 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 455 flow. Second operand 9 states and 1647 transitions. [2023-01-27 23:39:29,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 113 transitions, 737 flow [2023-01-27 23:39:29,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 704 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-27 23:39:29,402 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 528 flow [2023-01-27 23:39:29,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-01-27 23:39:29,402 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2023-01-27 23:39:29,403 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 528 flow [2023-01-27 23:39:29,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 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) [2023-01-27 23:39:29,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:29,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:29,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:39:29,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:29,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-01-27 23:39:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180381176] [2023-01-27 23:39:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:29,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180381176] [2023-01-27 23:39:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180381176] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:29,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:39:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691275384] [2023-01-27 23:39:29,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:29,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-01-27 23:39:29,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-01-27 23:39:29,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:29,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-01-27 23:39:29,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:29,720 INFO L130 PetriNetUnfolder]: 1879/3227 cut-off events. [2023-01-27 23:39:29,720 INFO L131 PetriNetUnfolder]: For 807/825 co-relation queries the response was YES. [2023-01-27 23:39:29,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 3227 events. 1879/3227 cut-off events. For 807/825 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14190 event pairs, 1030 based on Foata normal form. 18/2804 useless extension candidates. Maximal degree in co-relation 7198. Up to 1612 conditions per place. [2023-01-27 23:39:29,732 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 95 selfloop transitions, 3 changer transitions 4/113 dead transitions. [2023-01-27 23:39:29,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 688 flow [2023-01-27 23:39:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-01-27 23:39:29,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630725863284003 [2023-01-27 23:39:29,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-01-27 23:39:29,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-01-27 23:39:29,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:29,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-01-27 23:39:29,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:29,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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) [2023-01-27 23:39:29,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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) [2023-01-27 23:39:29,738 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 528 flow. Second operand 3 states and 799 transitions. [2023-01-27 23:39:29,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 688 flow [2023-01-27 23:39:29,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 113 transitions, 611 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-01-27 23:39:29,742 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 365 flow [2023-01-27 23:39:29,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-01-27 23:39:29,742 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-01-27 23:39:29,743 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 365 flow [2023-01-27 23:39:29,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-01-27 23:39:29,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:29,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:39:29,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:29,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-01-27 23:39:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365894887] [2023-01-27 23:39:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365894887] [2023-01-27 23:39:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365894887] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:30,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 23:39:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731198274] [2023-01-27 23:39:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:30,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:39:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:39:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:39:30,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:30,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 365 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:30,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:30,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:30,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:30,826 INFO L130 PetriNetUnfolder]: 1644/2906 cut-off events. [2023-01-27 23:39:30,826 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-01-27 23:39:30,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 2906 events. 1644/2906 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12791 event pairs, 533 based on Foata normal form. 9/2528 useless extension candidates. Maximal degree in co-relation 6320. Up to 2003 conditions per place. [2023-01-27 23:39:30,838 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 95 selfloop transitions, 23 changer transitions 10/137 dead transitions. [2023-01-27 23:39:30,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 730 flow [2023-01-27 23:39:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1646 transitions. [2023-01-27 23:39:30,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38665727037820063 [2023-01-27 23:39:30,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1646 transitions. [2023-01-27 23:39:30,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1646 transitions. [2023-01-27 23:39:30,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:30,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1646 transitions. [2023-01-27 23:39:30,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 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) [2023-01-27 23:39:30,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:30,850 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:30,850 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 365 flow. Second operand 9 states and 1646 transitions. [2023-01-27 23:39:30,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 730 flow [2023-01-27 23:39:30,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 713 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-27 23:39:30,853 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 417 flow [2023-01-27 23:39:30,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2023-01-27 23:39:30,854 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2023-01-27 23:39:30,855 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 417 flow [2023-01-27 23:39:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:30,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:30,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:39:30,865 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:30,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 2 times [2023-01-27 23:39:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916992318] [2023-01-27 23:39:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:31,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:31,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916992318] [2023-01-27 23:39:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916992318] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:31,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 23:39:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943694609] [2023-01-27 23:39:31,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:31,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:39:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:39:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:39:31,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:31,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 417 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:31,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:31,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:31,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:31,981 INFO L130 PetriNetUnfolder]: 1778/3157 cut-off events. [2023-01-27 23:39:31,981 INFO L131 PetriNetUnfolder]: For 694/694 co-relation queries the response was YES. [2023-01-27 23:39:31,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 3157 events. 1778/3157 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14505 event pairs, 469 based on Foata normal form. 0/2733 useless extension candidates. Maximal degree in co-relation 7031. Up to 1744 conditions per place. [2023-01-27 23:39:31,996 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 100 selfloop transitions, 27 changer transitions 12/148 dead transitions. [2023-01-27 23:39:31,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 148 transitions, 849 flow [2023-01-27 23:39:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:31,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1653 transitions. [2023-01-27 23:39:32,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3883016208597604 [2023-01-27 23:39:32,000 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1653 transitions. [2023-01-27 23:39:32,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1653 transitions. [2023-01-27 23:39:32,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:32,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1653 transitions. [2023-01-27 23:39:32,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:32,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:32,007 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:32,007 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 417 flow. Second operand 9 states and 1653 transitions. [2023-01-27 23:39:32,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 148 transitions, 849 flow [2023-01-27 23:39:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 808 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 23:39:32,012 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 476 flow [2023-01-27 23:39:32,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-01-27 23:39:32,014 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2023-01-27 23:39:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 476 flow [2023-01-27 23:39:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:32,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:32,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:32,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:39:32,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:32,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 3 times [2023-01-27 23:39:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093530982] [2023-01-27 23:39:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:32,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093530982] [2023-01-27 23:39:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093530982] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 23:39:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152213978] [2023-01-27 23:39:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:39:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:39:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:39:32,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:32,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 476 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:32,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:32,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,081 INFO L130 PetriNetUnfolder]: 1791/3168 cut-off events. [2023-01-27 23:39:33,082 INFO L131 PetriNetUnfolder]: For 792/792 co-relation queries the response was YES. [2023-01-27 23:39:33,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 3168 events. 1791/3168 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14388 event pairs, 515 based on Foata normal form. 0/2741 useless extension candidates. Maximal degree in co-relation 7207. Up to 1744 conditions per place. [2023-01-27 23:39:33,092 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 94 selfloop transitions, 28 changer transitions 9/140 dead transitions. [2023-01-27 23:39:33,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 140 transitions, 859 flow [2023-01-27 23:39:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1642 transitions. [2023-01-27 23:39:33,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571764153159505 [2023-01-27 23:39:33,095 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1642 transitions. [2023-01-27 23:39:33,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1642 transitions. [2023-01-27 23:39:33,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1642 transitions. [2023-01-27 23:39:33,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 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) [2023-01-27 23:39:33,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:33,103 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:33,103 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 476 flow. Second operand 9 states and 1642 transitions. [2023-01-27 23:39:33,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 140 transitions, 859 flow [2023-01-27 23:39:33,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 822 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 23:39:33,107 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 514 flow [2023-01-27 23:39:33,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2023-01-27 23:39:33,108 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-01-27 23:39:33,108 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 514 flow [2023-01-27 23:39:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:33,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 23:39:33,109 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:33,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 4 times [2023-01-27 23:39:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295998342] [2023-01-27 23:39:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295998342] [2023-01-27 23:39:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295998342] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:33,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 23:39:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641403109] [2023-01-27 23:39:33,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:33,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:39:33,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:39:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:39:33,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:33,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 514 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:33,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:33,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:33,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:34,144 INFO L130 PetriNetUnfolder]: 1778/3137 cut-off events. [2023-01-27 23:39:34,144 INFO L131 PetriNetUnfolder]: For 925/925 co-relation queries the response was YES. [2023-01-27 23:39:34,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3137 events. 1778/3137 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14151 event pairs, 504 based on Foata normal form. 0/2721 useless extension candidates. Maximal degree in co-relation 7239. Up to 1744 conditions per place. [2023-01-27 23:39:34,158 INFO L137 encePairwiseOnDemand]: 463/473 looper letters, 92 selfloop transitions, 28 changer transitions 10/138 dead transitions. [2023-01-27 23:39:34,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 881 flow [2023-01-27 23:39:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2023-01-27 23:39:34,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38524782710829225 [2023-01-27 23:39:34,161 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2023-01-27 23:39:34,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2023-01-27 23:39:34,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:34,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2023-01-27 23:39:34,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 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) [2023-01-27 23:39:34,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:34,168 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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) [2023-01-27 23:39:34,168 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 514 flow. Second operand 9 states and 1640 transitions. [2023-01-27 23:39:34,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 881 flow [2023-01-27 23:39:34,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 138 transitions, 848 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-01-27 23:39:34,173 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 529 flow [2023-01-27 23:39:34,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-01-27 23:39:34,174 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-01-27 23:39:34,175 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 529 flow [2023-01-27 23:39:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 states have internal predecessors, (1884), 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) [2023-01-27 23:39:34,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:34,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:34,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 23:39:34,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:34,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-01-27 23:39:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:34,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267749071] [2023-01-27 23:39:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267749071] [2023-01-27 23:39:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267749071] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:34,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214391468] [2023-01-27 23:39:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:34,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:34,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 473 [2023-01-27 23:39:34,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-01-27 23:39:34,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:34,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 473 [2023-01-27 23:39:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:34,401 INFO L130 PetriNetUnfolder]: 1119/2092 cut-off events. [2023-01-27 23:39:34,401 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-01-27 23:39:34,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 2092 events. 1119/2092 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9421 event pairs, 278 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 5142. Up to 1502 conditions per place. [2023-01-27 23:39:34,409 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 80 selfloop transitions, 6 changer transitions 1/100 dead transitions. [2023-01-27 23:39:34,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 743 flow [2023-01-27 23:39:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-01-27 23:39:34,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355884425651868 [2023-01-27 23:39:34,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-01-27 23:39:34,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-01-27 23:39:34,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:34,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-01-27 23:39:34,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 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) [2023-01-27 23:39:34,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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) [2023-01-27 23:39:34,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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) [2023-01-27 23:39:34,414 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 529 flow. Second operand 3 states and 760 transitions. [2023-01-27 23:39:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 743 flow [2023-01-27 23:39:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 685 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 23:39:34,418 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 483 flow [2023-01-27 23:39:34,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-01-27 23:39:34,419 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2023-01-27 23:39:34,419 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 483 flow [2023-01-27 23:39:34,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-01-27 23:39:34,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:34,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 23:39:34,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:34,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-01-27 23:39:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:34,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388900720] [2023-01-27 23:39:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:34,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:35,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:35,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388900720] [2023-01-27 23:39:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388900720] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:35,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:35,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 23:39:35,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111808480] [2023-01-27 23:39:35,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:35,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:39:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:35,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:39:35,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:39:35,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:35,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 483 flow. Second operand has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 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) [2023-01-27 23:39:35,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:35,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:35,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:35,657 INFO L130 PetriNetUnfolder]: 1155/2163 cut-off events. [2023-01-27 23:39:35,657 INFO L131 PetriNetUnfolder]: For 778/780 co-relation queries the response was YES. [2023-01-27 23:39:35,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2163 events. 1155/2163 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9844 event pairs, 500 based on Foata normal form. 0/2080 useless extension candidates. Maximal degree in co-relation 5302. Up to 1247 conditions per place. [2023-01-27 23:39:35,665 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 108 selfloop transitions, 31 changer transitions 12/159 dead transitions. [2023-01-27 23:39:35,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 159 transitions, 976 flow [2023-01-27 23:39:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:39:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:39:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2221 transitions. [2023-01-27 23:39:35,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912966878083157 [2023-01-27 23:39:35,669 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2221 transitions. [2023-01-27 23:39:35,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2221 transitions. [2023-01-27 23:39:35,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:35,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2221 transitions. [2023-01-27 23:39:35,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.08333333333334) internal successors, (2221), 12 states have internal predecessors, (2221), 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) [2023-01-27 23:39:35,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 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) [2023-01-27 23:39:35,678 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 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) [2023-01-27 23:39:35,678 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 483 flow. Second operand 12 states and 2221 transitions. [2023-01-27 23:39:35,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 159 transitions, 976 flow [2023-01-27 23:39:35,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:35,683 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 618 flow [2023-01-27 23:39:35,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2023-01-27 23:39:35,683 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-01-27 23:39:35,683 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 618 flow [2023-01-27 23:39:35,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 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) [2023-01-27 23:39:35,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:35,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:35,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 23:39:35,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:35,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -54871982, now seen corresponding path program 2 times [2023-01-27 23:39:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122839043] [2023-01-27 23:39:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:35,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:36,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:36,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122839043] [2023-01-27 23:39:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122839043] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:36,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-01-27 23:39:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837673391] [2023-01-27 23:39:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 23:39:36,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 23:39:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-01-27 23:39:36,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 473 [2023-01-27 23:39:36,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 618 flow. Second operand has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 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) [2023-01-27 23:39:36,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:36,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 473 [2023-01-27 23:39:36,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:37,909 INFO L130 PetriNetUnfolder]: 1687/3169 cut-off events. [2023-01-27 23:39:37,909 INFO L131 PetriNetUnfolder]: For 1108/1112 co-relation queries the response was YES. [2023-01-27 23:39:37,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7916 conditions, 3169 events. 1687/3169 cut-off events. For 1108/1112 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 15702 event pairs, 284 based on Foata normal form. 0/3083 useless extension candidates. Maximal degree in co-relation 7889. Up to 1008 conditions per place. [2023-01-27 23:39:37,922 INFO L137 encePairwiseOnDemand]: 458/473 looper letters, 155 selfloop transitions, 31 changer transitions 7/201 dead transitions. [2023-01-27 23:39:37,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 201 transitions, 1283 flow [2023-01-27 23:39:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:39:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:39:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2399 transitions. [2023-01-27 23:39:37,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901447389819483 [2023-01-27 23:39:37,928 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2399 transitions. [2023-01-27 23:39:37,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2399 transitions. [2023-01-27 23:39:37,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:37,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2399 transitions. [2023-01-27 23:39:37,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.53846153846155) internal successors, (2399), 13 states have internal predecessors, (2399), 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) [2023-01-27 23:39:37,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:37,939 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:37,939 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 618 flow. Second operand 13 states and 2399 transitions. [2023-01-27 23:39:37,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 201 transitions, 1283 flow [2023-01-27 23:39:37,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 201 transitions, 1224 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-01-27 23:39:37,949 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 707 flow [2023-01-27 23:39:37,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=707, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-01-27 23:39:37,950 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2023-01-27 23:39:37,950 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 707 flow [2023-01-27 23:39:37,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 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) [2023-01-27 23:39:37,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:37,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:37,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 23:39:37,951 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:37,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-01-27 23:39:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209880378] [2023-01-27 23:39:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209880378] [2023-01-27 23:39:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209880378] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:39:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380112964] [2023-01-27 23:39:38,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:38,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:39:38,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:39:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:39:38,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:38,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 707 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 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) [2023-01-27 23:39:38,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:38,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:38,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:39,347 INFO L130 PetriNetUnfolder]: 1701/3222 cut-off events. [2023-01-27 23:39:39,348 INFO L131 PetriNetUnfolder]: For 1780/1780 co-relation queries the response was YES. [2023-01-27 23:39:39,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 3222 events. 1701/3222 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16132 event pairs, 382 based on Foata normal form. 9/3156 useless extension candidates. Maximal degree in co-relation 8418. Up to 1578 conditions per place. [2023-01-27 23:39:39,363 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 118 selfloop transitions, 37 changer transitions 13/176 dead transitions. [2023-01-27 23:39:39,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 1228 flow [2023-01-27 23:39:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:39:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:39:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2397 transitions. [2023-01-27 23:39:39,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38981948284273865 [2023-01-27 23:39:39,366 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2397 transitions. [2023-01-27 23:39:39,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2397 transitions. [2023-01-27 23:39:39,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:39,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2397 transitions. [2023-01-27 23:39:39,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.3846153846154) internal successors, (2397), 13 states have internal predecessors, (2397), 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) [2023-01-27 23:39:39,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:39,377 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:39,377 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 707 flow. Second operand 13 states and 2397 transitions. [2023-01-27 23:39:39,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 1228 flow [2023-01-27 23:39:39,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1187 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-27 23:39:39,386 INFO L231 Difference]: Finished difference. Result has 133 places, 111 transitions, 809 flow [2023-01-27 23:39:39,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=809, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2023-01-27 23:39:39,386 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2023-01-27 23:39:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 809 flow [2023-01-27 23:39:39,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 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) [2023-01-27 23:39:39,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:39,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 23:39:39,387 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:39,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -785537338, now seen corresponding path program 2 times [2023-01-27 23:39:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:39,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196293003] [2023-01-27 23:39:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:40,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196293003] [2023-01-27 23:39:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196293003] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:40,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:40,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:39:40,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412831873] [2023-01-27 23:39:40,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:40,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:39:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:39:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:39:40,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:40,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 111 transitions, 809 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 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) [2023-01-27 23:39:40,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:40,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:40,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:40,620 INFO L130 PetriNetUnfolder]: 1717/3252 cut-off events. [2023-01-27 23:39:40,620 INFO L131 PetriNetUnfolder]: For 3000/3000 co-relation queries the response was YES. [2023-01-27 23:39:40,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 3252 events. 1717/3252 cut-off events. For 3000/3000 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16403 event pairs, 434 based on Foata normal form. 7/3184 useless extension candidates. Maximal degree in co-relation 8958. Up to 1555 conditions per place. [2023-01-27 23:39:40,637 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-01-27 23:39:40,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 178 transitions, 1325 flow [2023-01-27 23:39:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:39:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:39:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2396 transitions. [2023-01-27 23:39:40,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38965685477313383 [2023-01-27 23:39:40,640 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2396 transitions. [2023-01-27 23:39:40,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2396 transitions. [2023-01-27 23:39:40,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:40,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2396 transitions. [2023-01-27 23:39:40,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.30769230769232) internal successors, (2396), 13 states have internal predecessors, (2396), 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) [2023-01-27 23:39:40,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:40,647 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:40,647 INFO L175 Difference]: Start difference. First operand has 133 places, 111 transitions, 809 flow. Second operand 13 states and 2396 transitions. [2023-01-27 23:39:40,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 178 transitions, 1325 flow [2023-01-27 23:39:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 1261 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-01-27 23:39:40,658 INFO L231 Difference]: Finished difference. Result has 139 places, 113 transitions, 867 flow [2023-01-27 23:39:40,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=867, PETRI_PLACES=139, PETRI_TRANSITIONS=113} [2023-01-27 23:39:40,659 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2023-01-27 23:39:40,659 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 113 transitions, 867 flow [2023-01-27 23:39:40,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 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) [2023-01-27 23:39:40,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:40,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 23:39:40,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:40,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash -224439540, now seen corresponding path program 3 times [2023-01-27 23:39:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90477212] [2023-01-27 23:39:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:40,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:41,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:41,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90477212] [2023-01-27 23:39:41,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90477212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:41,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:41,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:39:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284366473] [2023-01-27 23:39:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:41,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:39:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:39:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:39:41,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:41,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 113 transitions, 867 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 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) [2023-01-27 23:39:41,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:41,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:41,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:42,082 INFO L130 PetriNetUnfolder]: 1423/2670 cut-off events. [2023-01-27 23:39:42,082 INFO L131 PetriNetUnfolder]: For 3329/3334 co-relation queries the response was YES. [2023-01-27 23:39:42,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 2670 events. 1423/2670 cut-off events. For 3329/3334 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12562 event pairs, 405 based on Foata normal form. 7/2607 useless extension candidates. Maximal degree in co-relation 7646. Up to 1091 conditions per place. [2023-01-27 23:39:42,095 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-01-27 23:39:42,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 178 transitions, 1362 flow [2023-01-27 23:39:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:39:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:39:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2399 transitions. [2023-01-27 23:39:42,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901447389819483 [2023-01-27 23:39:42,097 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2399 transitions. [2023-01-27 23:39:42,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2399 transitions. [2023-01-27 23:39:42,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:42,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2399 transitions. [2023-01-27 23:39:42,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.53846153846155) internal successors, (2399), 13 states have internal predecessors, (2399), 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) [2023-01-27 23:39:42,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:42,104 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:42,104 INFO L175 Difference]: Start difference. First operand has 139 places, 113 transitions, 867 flow. Second operand 13 states and 2399 transitions. [2023-01-27 23:39:42,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 178 transitions, 1362 flow [2023-01-27 23:39:42,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1274 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-01-27 23:39:42,115 INFO L231 Difference]: Finished difference. Result has 140 places, 111 transitions, 870 flow [2023-01-27 23:39:42,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=870, PETRI_PLACES=140, PETRI_TRANSITIONS=111} [2023-01-27 23:39:42,115 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 77 predicate places. [2023-01-27 23:39:42,115 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 111 transitions, 870 flow [2023-01-27 23:39:42,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 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) [2023-01-27 23:39:42,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:42,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:42,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 23:39:42,116 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:42,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1236496857, now seen corresponding path program 1 times [2023-01-27 23:39:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:42,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939475974] [2023-01-27 23:39:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:43,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939475974] [2023-01-27 23:39:43,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939475974] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:43,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:43,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-01-27 23:39:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295850626] [2023-01-27 23:39:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:43,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:39:43,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:39:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:39:43,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 473 [2023-01-27 23:39:43,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 111 transitions, 870 flow. Second operand has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 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) [2023-01-27 23:39:43,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:43,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 473 [2023-01-27 23:39:43,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:44,295 INFO L130 PetriNetUnfolder]: 1589/2991 cut-off events. [2023-01-27 23:39:44,295 INFO L131 PetriNetUnfolder]: For 3696/3701 co-relation queries the response was YES. [2023-01-27 23:39:44,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 2991 events. 1589/2991 cut-off events. For 3696/3701 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14197 event pairs, 302 based on Foata normal form. 8/2920 useless extension candidates. Maximal degree in co-relation 8419. Up to 861 conditions per place. [2023-01-27 23:39:44,309 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 144 selfloop transitions, 34 changer transitions 10/196 dead transitions. [2023-01-27 23:39:44,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 196 transitions, 1455 flow [2023-01-27 23:39:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:39:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:39:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2374 transitions. [2023-01-27 23:39:44,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38607903724182796 [2023-01-27 23:39:44,312 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2374 transitions. [2023-01-27 23:39:44,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2374 transitions. [2023-01-27 23:39:44,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:44,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2374 transitions. [2023-01-27 23:39:44,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 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) [2023-01-27 23:39:44,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:44,319 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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) [2023-01-27 23:39:44,319 INFO L175 Difference]: Start difference. First operand has 140 places, 111 transitions, 870 flow. Second operand 13 states and 2374 transitions. [2023-01-27 23:39:44,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 196 transitions, 1455 flow [2023-01-27 23:39:44,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 196 transitions, 1377 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-27 23:39:44,331 INFO L231 Difference]: Finished difference. Result has 144 places, 116 transitions, 906 flow [2023-01-27 23:39:44,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=906, PETRI_PLACES=144, PETRI_TRANSITIONS=116} [2023-01-27 23:39:44,331 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 81 predicate places. [2023-01-27 23:39:44,331 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 116 transitions, 906 flow [2023-01-27 23:39:44,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 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) [2023-01-27 23:39:44,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:44,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:44,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 23:39:44,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:44,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-01-27 23:39:44,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:44,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856991215] [2023-01-27 23:39:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:44,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:46,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:46,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856991215] [2023-01-27 23:39:46,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856991215] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:46,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:46,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-01-27 23:39:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696209132] [2023-01-27 23:39:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:46,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 23:39:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 23:39:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-01-27 23:39:46,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-01-27 23:39:46,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 116 transitions, 906 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 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) [2023-01-27 23:39:46,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:46,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-01-27 23:39:46,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:48,239 INFO L130 PetriNetUnfolder]: 1890/3589 cut-off events. [2023-01-27 23:39:48,239 INFO L131 PetriNetUnfolder]: For 4289/4295 co-relation queries the response was YES. [2023-01-27 23:39:48,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10272 conditions, 3589 events. 1890/3589 cut-off events. For 4289/4295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18092 event pairs, 750 based on Foata normal form. 82/3580 useless extension candidates. Maximal degree in co-relation 10231. Up to 2761 conditions per place. [2023-01-27 23:39:48,257 INFO L137 encePairwiseOnDemand]: 446/473 looper letters, 176 selfloop transitions, 57 changer transitions 32/273 dead transitions. [2023-01-27 23:39:48,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 273 transitions, 2034 flow [2023-01-27 23:39:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 23:39:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 23:39:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4801 transitions. [2023-01-27 23:39:48,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31719080338266387 [2023-01-27 23:39:48,266 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4801 transitions. [2023-01-27 23:39:48,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4801 transitions. [2023-01-27 23:39:48,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:48,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4801 transitions. [2023-01-27 23:39:48,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 150.03125) internal successors, (4801), 32 states have internal predecessors, (4801), 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) [2023-01-27 23:39:48,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 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) [2023-01-27 23:39:48,281 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 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) [2023-01-27 23:39:48,281 INFO L175 Difference]: Start difference. First operand has 144 places, 116 transitions, 906 flow. Second operand 32 states and 4801 transitions. [2023-01-27 23:39:48,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 273 transitions, 2034 flow [2023-01-27 23:39:48,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 273 transitions, 1949 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-01-27 23:39:48,298 INFO L231 Difference]: Finished difference. Result has 192 places, 171 transitions, 1437 flow [2023-01-27 23:39:48,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1437, PETRI_PLACES=192, PETRI_TRANSITIONS=171} [2023-01-27 23:39:48,298 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 129 predicate places. [2023-01-27 23:39:48,298 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 171 transitions, 1437 flow [2023-01-27 23:39:48,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 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) [2023-01-27 23:39:48,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:48,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 23:39:48,299 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:48,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1972154307, now seen corresponding path program 2 times [2023-01-27 23:39:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495730615] [2023-01-27 23:39:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495730615] [2023-01-27 23:39:50,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495730615] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:50,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-01-27 23:39:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464362627] [2023-01-27 23:39:50,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:50,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 23:39:50,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 23:39:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-01-27 23:39:50,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-01-27 23:39:50,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 171 transitions, 1437 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 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) [2023-01-27 23:39:50,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:50,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-01-27 23:39:50,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:53,322 INFO L130 PetriNetUnfolder]: 2111/4050 cut-off events. [2023-01-27 23:39:53,323 INFO L131 PetriNetUnfolder]: For 53559/53565 co-relation queries the response was YES. [2023-01-27 23:39:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 4050 events. 2111/4050 cut-off events. For 53559/53565 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21493 event pairs, 650 based on Foata normal form. 86/4120 useless extension candidates. Maximal degree in co-relation 18602. Up to 3128 conditions per place. [2023-01-27 23:39:53,377 INFO L137 encePairwiseOnDemand]: 446/473 looper letters, 223 selfloop transitions, 58 changer transitions 33/322 dead transitions. [2023-01-27 23:39:53,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 322 transitions, 3052 flow [2023-01-27 23:39:53,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 23:39:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 23:39:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4790 transitions. [2023-01-27 23:39:53,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31646405919661735 [2023-01-27 23:39:53,382 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4790 transitions. [2023-01-27 23:39:53,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4790 transitions. [2023-01-27 23:39:53,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:53,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4790 transitions. [2023-01-27 23:39:53,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 149.6875) internal successors, (4790), 32 states have internal predecessors, (4790), 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) [2023-01-27 23:39:53,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 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) [2023-01-27 23:39:53,409 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 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) [2023-01-27 23:39:53,409 INFO L175 Difference]: Start difference. First operand has 192 places, 171 transitions, 1437 flow. Second operand 32 states and 4790 transitions. [2023-01-27 23:39:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 322 transitions, 3052 flow [2023-01-27 23:39:53,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 322 transitions, 3034 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:53,461 INFO L231 Difference]: Finished difference. Result has 245 places, 220 transitions, 2179 flow [2023-01-27 23:39:53,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2179, PETRI_PLACES=245, PETRI_TRANSITIONS=220} [2023-01-27 23:39:53,462 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 182 predicate places. [2023-01-27 23:39:53,462 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 220 transitions, 2179 flow [2023-01-27 23:39:53,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 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) [2023-01-27 23:39:53,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:53,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 23:39:53,463 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:53,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1706648059, now seen corresponding path program 3 times [2023-01-27 23:39:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:53,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970353316] [2023-01-27 23:39:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:53,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:55,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:55,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970353316] [2023-01-27 23:39:55,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970353316] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:55,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:55,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-01-27 23:39:55,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405724601] [2023-01-27 23:39:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:55,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 23:39:55,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:55,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 23:39:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-01-27 23:39:55,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-01-27 23:39:55,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 220 transitions, 2179 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 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) [2023-01-27 23:39:55,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:55,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-01-27 23:39:55,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:57,864 INFO L130 PetriNetUnfolder]: 2319/4474 cut-off events. [2023-01-27 23:39:57,864 INFO L131 PetriNetUnfolder]: For 184733/184751 co-relation queries the response was YES. [2023-01-27 23:39:57,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27207 conditions, 4474 events. 2319/4474 cut-off events. For 184733/184751 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24650 event pairs, 742 based on Foata normal form. 92/4549 useless extension candidates. Maximal degree in co-relation 27113. Up to 3321 conditions per place. [2023-01-27 23:39:57,898 INFO L137 encePairwiseOnDemand]: 447/473 looper letters, 257 selfloop transitions, 71 changer transitions 35/371 dead transitions. [2023-01-27 23:39:57,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 371 transitions, 4400 flow [2023-01-27 23:39:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 23:39:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 23:39:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4941 transitions. [2023-01-27 23:39:57,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.316548145300788 [2023-01-27 23:39:57,922 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4941 transitions. [2023-01-27 23:39:57,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4941 transitions. [2023-01-27 23:39:57,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:57,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4941 transitions. [2023-01-27 23:39:57,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 149.72727272727272) internal successors, (4941), 33 states have internal predecessors, (4941), 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) [2023-01-27 23:39:57,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 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) [2023-01-27 23:39:57,940 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 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) [2023-01-27 23:39:57,940 INFO L175 Difference]: Start difference. First operand has 245 places, 220 transitions, 2179 flow. Second operand 33 states and 4941 transitions. [2023-01-27 23:39:57,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 371 transitions, 4400 flow [2023-01-27 23:39:58,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 371 transitions, 4230 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:58,097 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2907 flow [2023-01-27 23:39:58,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2907, PETRI_PLACES=296, PETRI_TRANSITIONS=266} [2023-01-27 23:39:58,097 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 233 predicate places. [2023-01-27 23:39:58,098 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2907 flow [2023-01-27 23:39:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 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) [2023-01-27 23:39:58,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:58,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 23:39:58,098 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:58,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash 963217069, now seen corresponding path program 4 times [2023-01-27 23:39:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401727731] [2023-01-27 23:39:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-01-27 23:52:02,014 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,017 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,017 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,018 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,018 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,019 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,031 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,031 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,031 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,032 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,032 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:52:02,032 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,033 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,036 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,036 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,036 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 23:52:02,039 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-27 23:52:02,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-27 23:52:02,039 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. [2023-01-27 23:52:02,044 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-27 23:52:02,045 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-27 23:52:02,045 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-27 23:52:02,045 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-01-27 23:52:02,045 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-01-27 23:52:02,045 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-27 23:52:02,046 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:02,049 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:52:02,050 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:52:02,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:52:02 BasicIcfg [2023-01-27 23:52:02,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:52:02,061 INFO L158 Benchmark]: Toolchain (without parser) took 764949.78ms. Allocated memory was 394.3MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 325.9MB in the beginning and 2.4GB in the end (delta: -2.0GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-01-27 23:52:02,061 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 394.3MB. Free memory is still 339.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:52:02,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.84ms. Allocated memory was 394.3MB in the beginning and 721.4MB in the end (delta: 327.2MB). Free memory was 325.7MB in the beginning and 673.5MB in the end (delta: -347.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-27 23:52:02,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.48ms. Allocated memory is still 721.4MB. Free memory was 673.5MB in the beginning and 670.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:52:02,061 INFO L158 Benchmark]: Boogie Preprocessor took 43.15ms. Allocated memory is still 721.4MB. Free memory was 670.4MB in the beginning and 668.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:52:02,061 INFO L158 Benchmark]: RCFGBuilder took 498.59ms. Allocated memory is still 721.4MB. Free memory was 668.3MB in the beginning and 643.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 23:52:02,064 INFO L158 Benchmark]: TraceAbstraction took 763900.66ms. Allocated memory was 721.4MB in the beginning and 6.2GB in the end (delta: 5.5GB). Free memory was 643.8MB in the beginning and 2.4GB in the end (delta: -1.7GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-01-27 23:52:02,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 394.3MB. Free memory is still 339.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 446.84ms. Allocated memory was 394.3MB in the beginning and 721.4MB in the end (delta: 327.2MB). Free memory was 325.7MB in the beginning and 673.5MB in the end (delta: -347.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.48ms. Allocated memory is still 721.4MB. Free memory was 673.5MB in the beginning and 670.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.15ms. Allocated memory is still 721.4MB. Free memory was 670.4MB in the beginning and 668.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 498.59ms. Allocated memory is still 721.4MB. Free memory was 668.3MB in the beginning and 643.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 763900.66ms. Allocated memory was 721.4MB in the beginning and 6.2GB in the end (delta: 5.5GB). Free memory was 643.8MB in the beginning and 2.4GB in the end (delta: -1.7GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 239 PlacesBefore, 63 PlacesAfterwards, 247 TransitionsBefore, 66 TransitionsAfterwards, 15864 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 125 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 215 TotalNumberOfCompositions, 33075 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16387, independent: 15763, independent conditional: 0, independent unconditional: 15763, dependent: 624, dependent conditional: 0, dependent unconditional: 624, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8632, independent: 8496, independent conditional: 0, independent unconditional: 8496, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16387, independent: 7267, independent conditional: 0, independent unconditional: 7267, dependent: 488, dependent conditional: 0, dependent unconditional: 488, unknown: 8632, unknown conditional: 0, unknown unconditional: 8632] , Statistics on independence cache: Total cache size (in pairs): 481, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1043]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1059]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1062]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 407 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 763.8s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2283 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2283 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13606 IncrementalHoareTripleChecker+Invalid, 13945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 9 mSDtfsCounter, 13606 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2907occurred in iteration=22, InterpolantAutomatonStates: 256, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 12517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-01-27 23:52:02,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-01-27 23:52:02.299 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3508a758/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3508a758/.metadata/.log.