/usr/bin/java -Xmx8000000000 -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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:56:51,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:56:51,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:56:51,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:56:51,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:56:51,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:56:51,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:56:51,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:56:51,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:56:51,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:56:51,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:56:51,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:56:51,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:56:51,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:56:51,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:56:51,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:56:51,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:56:51,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:56:51,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:56:51,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:56:51,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:56:51,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:56:51,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:56:51,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:56:51,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:56:51,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:56:51,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:56:51,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:56:51,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:56:51,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:56:51,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:56:51,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:56:51,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:56:51,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:56:51,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:56:51,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:56:51,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:56:51,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:56:51,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:56:51,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:56:51,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:56:51,802 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-NoLbe.epf [2022-12-11 23:56:51,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:56:51,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:56:51,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:56:51,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:56:51,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:56:51,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:56:51,833 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:56:51,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:56:51,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:56:51,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:56:51,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:56:51,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:56:51,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:56:51,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:56:51,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-11 23:56:52,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:56:52,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:56:52,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:56:52,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:56:52,168 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:56:52,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2022-12-11 23:56:53,108 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:56:53,313 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:56:53,313 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2022-12-11 23:56:53,337 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4109d2ebf/ddaf7a08158f48bfb3386971d967d549/FLAGf5d1e120a [2022-12-11 23:56:53,351 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4109d2ebf/ddaf7a08158f48bfb3386971d967d549 [2022-12-11 23:56:53,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:56:53,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:56:53,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:56:53,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:56:53,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:56:53,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438cd840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53, skipping insertion in model container [2022-12-11 23:56:53,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:56:53,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:56:53,490 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c[2251,2264] [2022-12-11 23:56:53,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:56:53,506 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:56:53,561 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c[2251,2264] [2022-12-11 23:56:53,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:56:53,578 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:56:53,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53 WrapperNode [2022-12-11 23:56:53,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:56:53,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:56:53,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:56:53,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:56:53,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,616 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 112 [2022-12-11 23:56:53,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:56:53,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:56:53,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:56:53,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:56:53,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:56:53,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:56:53,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:56:53,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:56:53,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (1/1) ... [2022-12-11 23:56:53,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:56:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:56:53,688 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) [2022-12-11 23:56:53,721 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 [2022-12-11 23:56:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:56:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 23:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 23:56:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 23:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 23:56:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:56:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:56:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:56:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 23:56:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:56:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 23:56:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:56:53,737 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:56:53,842 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:56:53,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:56:54,063 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:56:54,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:56:54,070 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 23:56:54,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:56:54 BoogieIcfgContainer [2022-12-11 23:56:54,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:56:54,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:56:54,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:56:54,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:56:54,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:56:53" (1/3) ... [2022-12-11 23:56:54,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dbfac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:56:54, skipping insertion in model container [2022-12-11 23:56:54,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:56:53" (2/3) ... [2022-12-11 23:56:54,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dbfac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:56:54, skipping insertion in model container [2022-12-11 23:56:54,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:56:54" (3/3) ... [2022-12-11 23:56:54,082 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-12-11 23:56:54,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:56:54,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 23:56:54,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:56:54,175 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 23:56:54,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 159 transitions, 334 flow [2022-12-11 23:56:54,321 INFO L130 PetriNetUnfolder]: 15/157 cut-off events. [2022-12-11 23:56:54,321 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:56:54,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 15/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2022-12-11 23:56:54,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 159 transitions, 334 flow [2022-12-11 23:56:54,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 149 transitions, 310 flow [2022-12-11 23:56:54,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:56:54,369 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;@58377017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:56:54,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 23:56:54,411 INFO L130 PetriNetUnfolder]: 15/148 cut-off events. [2022-12-11 23:56:54,411 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:56:54,411 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:54,412 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:54,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:54,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1736901044, now seen corresponding path program 1 times [2022-12-11 23:56:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:54,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786869312] [2022-12-11 23:56:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:56:55,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:55,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786869312] [2022-12-11 23:56:55,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786869312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:56:55,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:56:55,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:56:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232980777] [2022-12-11 23:56:55,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:55,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:56:55,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:56:55,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:56:55,065 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2022-12-11 23:56:55,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 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) [2022-12-11 23:56:55,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:55,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2022-12-11 23:56:55,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:55,348 INFO L130 PetriNetUnfolder]: 171/623 cut-off events. [2022-12-11 23:56:55,349 INFO L131 PetriNetUnfolder]: For 92/105 co-relation queries the response was YES. [2022-12-11 23:56:55,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 623 events. 171/623 cut-off events. For 92/105 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3135 event pairs, 41 based on Foata normal form. 9/545 useless extension candidates. Maximal degree in co-relation 742. Up to 122 conditions per place. [2022-12-11 23:56:55,357 INFO L137 encePairwiseOnDemand]: 138/159 looper letters, 65 selfloop transitions, 5 changer transitions 11/178 dead transitions. [2022-12-11 23:56:55,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 545 flow [2022-12-11 23:56:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 23:56:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 23:56:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1051 transitions. [2022-12-11 23:56:55,374 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7344514325646401 [2022-12-11 23:56:55,379 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2022-12-11 23:56:55,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 178 transitions, 545 flow [2022-12-11 23:56:55,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 167 transitions, 498 flow [2022-12-11 23:56:55,385 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 167 transitions, 498 flow [2022-12-11 23:56:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 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) [2022-12-11 23:56:55,386 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:55,387 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 23:56:55,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash -48993759, now seen corresponding path program 1 times [2022-12-11 23:56:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004311403] [2022-12-11 23:56:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:55,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:56:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:55,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004311403] [2022-12-11 23:56:55,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004311403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:56:55,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:56:55,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:56:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167097268] [2022-12-11 23:56:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:55,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:56:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:56:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:56:55,586 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-11 23:56:55,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 167 transitions, 498 flow. Second operand has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 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) [2022-12-11 23:56:55,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:55,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-11 23:56:55,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:55,752 INFO L130 PetriNetUnfolder]: 212/809 cut-off events. [2022-12-11 23:56:55,752 INFO L131 PetriNetUnfolder]: For 338/521 co-relation queries the response was YES. [2022-12-11 23:56:55,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 809 events. 212/809 cut-off events. For 338/521 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4276 event pairs, 46 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 963. Up to 139 conditions per place. [2022-12-11 23:56:55,756 INFO L137 encePairwiseOnDemand]: 147/159 looper letters, 75 selfloop transitions, 14 changer transitions 1/196 dead transitions. [2022-12-11 23:56:55,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 196 transitions, 779 flow [2022-12-11 23:56:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 23:56:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 23:56:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1168 transitions. [2022-12-11 23:56:55,759 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7345911949685534 [2022-12-11 23:56:55,759 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 7 predicate places. [2022-12-11 23:56:55,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 196 transitions, 779 flow [2022-12-11 23:56:55,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 195 transitions, 773 flow [2022-12-11 23:56:55,763 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 195 transitions, 773 flow [2022-12-11 23:56:55,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 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) [2022-12-11 23:56:55,764 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:55,764 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:55,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:56:55,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash 623300907, now seen corresponding path program 1 times [2022-12-11 23:56:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:55,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554854762] [2022-12-11 23:56:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:55,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:56:55,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:55,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554854762] [2022-12-11 23:56:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554854762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:56:55,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:56:55,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:56:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502461177] [2022-12-11 23:56:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:55,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:56:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:56:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:56:55,885 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-11 23:56:55,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 195 transitions, 773 flow. Second operand has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 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) [2022-12-11 23:56:55,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:55,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-11 23:56:55,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:56,044 INFO L130 PetriNetUnfolder]: 215/815 cut-off events. [2022-12-11 23:56:56,044 INFO L131 PetriNetUnfolder]: For 555/819 co-relation queries the response was YES. [2022-12-11 23:56:56,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 815 events. 215/815 cut-off events. For 555/819 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4157 event pairs, 54 based on Foata normal form. 3/717 useless extension candidates. Maximal degree in co-relation 1421. Up to 204 conditions per place. [2022-12-11 23:56:56,048 INFO L137 encePairwiseOnDemand]: 147/159 looper letters, 65 selfloop transitions, 11 changer transitions 17/199 dead transitions. [2022-12-11 23:56:56,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 199 transitions, 975 flow [2022-12-11 23:56:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 23:56:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 23:56:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1163 transitions. [2022-12-11 23:56:56,050 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7314465408805031 [2022-12-11 23:56:56,051 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 16 predicate places. [2022-12-11 23:56:56,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 199 transitions, 975 flow [2022-12-11 23:56:56,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 182 transitions, 852 flow [2022-12-11 23:56:56,054 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 182 transitions, 852 flow [2022-12-11 23:56:56,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 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) [2022-12-11 23:56:56,055 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:56,055 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:56,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 23:56:56,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -713596193, now seen corresponding path program 1 times [2022-12-11 23:56:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:56,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297588192] [2022-12-11 23:56:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:56:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297588192] [2022-12-11 23:56:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297588192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:56:56,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:56:56,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:56:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247496150] [2022-12-11 23:56:56,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:56,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:56:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:56:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:56:56,163 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-11 23:56:56,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 182 transitions, 852 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2022-12-11 23:56:56,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:56,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-11 23:56:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:56,326 INFO L130 PetriNetUnfolder]: 244/912 cut-off events. [2022-12-11 23:56:56,326 INFO L131 PetriNetUnfolder]: For 1184/1702 co-relation queries the response was YES. [2022-12-11 23:56:56,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 912 events. 244/912 cut-off events. For 1184/1702 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5017 event pairs, 46 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 1648. Up to 204 conditions per place. [2022-12-11 23:56:56,331 INFO L137 encePairwiseOnDemand]: 149/159 looper letters, 78 selfloop transitions, 10 changer transitions 1/199 dead transitions. [2022-12-11 23:56:56,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 199 transitions, 1171 flow [2022-12-11 23:56:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 23:56:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 23:56:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 938 transitions. [2022-12-11 23:56:56,334 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7374213836477987 [2022-12-11 23:56:56,335 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 19 predicate places. [2022-12-11 23:56:56,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 199 transitions, 1171 flow [2022-12-11 23:56:56,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 198 transitions, 1161 flow [2022-12-11 23:56:56,339 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 198 transitions, 1161 flow [2022-12-11 23:56:56,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2022-12-11 23:56:56,340 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:56,340 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:56:56,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1684672133, now seen corresponding path program 1 times [2022-12-11 23:56:56,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:56,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576359425] [2022-12-11 23:56:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:56:56,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576359425] [2022-12-11 23:56:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576359425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:56:56,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:56:56,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 23:56:56,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83352912] [2022-12-11 23:56:56,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:56,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:56:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:56:56,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:56:56,480 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 159 [2022-12-11 23:56:56,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 198 transitions, 1161 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2022-12-11 23:56:56,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:56,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 159 [2022-12-11 23:56:56,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:56,638 INFO L130 PetriNetUnfolder]: 214/792 cut-off events. [2022-12-11 23:56:56,638 INFO L131 PetriNetUnfolder]: For 1429/1949 co-relation queries the response was YES. [2022-12-11 23:56:56,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 792 events. 214/792 cut-off events. For 1429/1949 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4053 event pairs, 54 based on Foata normal form. 5/697 useless extension candidates. Maximal degree in co-relation 1885. Up to 204 conditions per place. [2022-12-11 23:56:56,643 INFO L137 encePairwiseOnDemand]: 149/159 looper letters, 71 selfloop transitions, 9 changer transitions 5/191 dead transitions. [2022-12-11 23:56:56,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 191 transitions, 1255 flow [2022-12-11 23:56:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 23:56:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 23:56:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 933 transitions. [2022-12-11 23:56:56,645 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7334905660377359 [2022-12-11 23:56:56,647 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 26 predicate places. [2022-12-11 23:56:56,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 191 transitions, 1255 flow [2022-12-11 23:56:56,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 186 transitions, 1188 flow [2022-12-11 23:56:56,653 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 186 transitions, 1188 flow [2022-12-11 23:56:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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) [2022-12-11 23:56:56,654 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:56,657 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:56,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 23:56:56,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1519716200, now seen corresponding path program 1 times [2022-12-11 23:56:56,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:56,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731753534] [2022-12-11 23:56:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:56,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:56:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731753534] [2022-12-11 23:56:56,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731753534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:56:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158774177] [2022-12-11 23:56:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:56,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:56:56,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:56:56,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:56:56,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 23:56:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:57,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-11 23:56:57,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:56:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:56:57,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:56:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:56:57,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158774177] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 23:56:57,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 23:56:57,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-12-11 23:56:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586053183] [2022-12-11 23:56:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:57,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-11 23:56:57,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-11 23:56:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-12-11 23:56:57,866 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2022-12-11 23:56:57,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 186 transitions, 1188 flow. Second operand has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 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) [2022-12-11 23:56:57,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:57,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2022-12-11 23:56:57,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:58,285 INFO L130 PetriNetUnfolder]: 177/769 cut-off events. [2022-12-11 23:56:58,285 INFO L131 PetriNetUnfolder]: For 1986/2689 co-relation queries the response was YES. [2022-12-11 23:56:58,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2587 conditions, 769 events. 177/769 cut-off events. For 1986/2689 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4166 event pairs, 47 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 1968. Up to 194 conditions per place. [2022-12-11 23:56:58,289 INFO L137 encePairwiseOnDemand]: 145/159 looper letters, 73 selfloop transitions, 17 changer transitions 0/194 dead transitions. [2022-12-11 23:56:58,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 194 transitions, 1476 flow [2022-12-11 23:56:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-11 23:56:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-11 23:56:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1558 transitions. [2022-12-11 23:56:58,293 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6999101527403414 [2022-12-11 23:56:58,295 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 37 predicate places. [2022-12-11 23:56:58,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 194 transitions, 1476 flow [2022-12-11 23:56:58,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 194 transitions, 1476 flow [2022-12-11 23:56:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 194 transitions, 1476 flow [2022-12-11 23:56:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 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) [2022-12-11 23:56:58,300 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:58,300 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:58,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 23:56:58,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-11 23:56:58,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:56:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:56:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1562384448, now seen corresponding path program 1 times [2022-12-11 23:56:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:56:58,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976785041] [2022-12-11 23:56:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:56:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:56:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:56:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976785041] [2022-12-11 23:56:58,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976785041] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:56:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201543781] [2022-12-11 23:56:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:56:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:56:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:56:58,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:56:58,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 23:56:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:56:58,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-11 23:56:58,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:56:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:56:59,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:56:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:56:59,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201543781] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 23:56:59,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 23:56:59,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-12-11 23:56:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193350728] [2022-12-11 23:56:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:56:59,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-11 23:56:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:56:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-11 23:56:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-12-11 23:56:59,517 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2022-12-11 23:56:59,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 194 transitions, 1476 flow. Second operand has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 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) [2022-12-11 23:56:59,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:56:59,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2022-12-11 23:56:59,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:56:59,856 INFO L130 PetriNetUnfolder]: 168/805 cut-off events. [2022-12-11 23:56:59,856 INFO L131 PetriNetUnfolder]: For 2919/3130 co-relation queries the response was YES. [2022-12-11 23:56:59,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 805 events. 168/805 cut-off events. For 2919/3130 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4578 event pairs, 42 based on Foata normal form. 0/736 useless extension candidates. Maximal degree in co-relation 2187. Up to 231 conditions per place. [2022-12-11 23:56:59,861 INFO L137 encePairwiseOnDemand]: 145/159 looper letters, 79 selfloop transitions, 17 changer transitions 0/204 dead transitions. [2022-12-11 23:56:59,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 204 transitions, 1829 flow [2022-12-11 23:56:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-11 23:56:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-11 23:56:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1560 transitions. [2022-12-11 23:56:59,864 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7008086253369272 [2022-12-11 23:56:59,864 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 50 predicate places. [2022-12-11 23:56:59,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 204 transitions, 1829 flow [2022-12-11 23:56:59,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 204 transitions, 1829 flow [2022-12-11 23:56:59,868 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 204 transitions, 1829 flow [2022-12-11 23:56:59,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.36363636363636) internal successors, (1214), 11 states have internal predecessors, (1214), 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) [2022-12-11 23:56:59,868 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:56:59,868 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:56:59,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 23:57:00,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-11 23:57:00,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash 987241183, now seen corresponding path program 1 times [2022-12-11 23:57:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:00,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977235113] [2022-12-11 23:57:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:00,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977235113] [2022-12-11 23:57:00,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977235113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:00,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:00,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:57:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764683167] [2022-12-11 23:57:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:57:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:57:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:57:00,784 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:00,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 204 transitions, 1829 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:00,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:00,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:00,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:01,823 INFO L130 PetriNetUnfolder]: 2027/4151 cut-off events. [2022-12-11 23:57:01,824 INFO L131 PetriNetUnfolder]: For 13411/13429 co-relation queries the response was YES. [2022-12-11 23:57:01,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14715 conditions, 4151 events. 2027/4151 cut-off events. For 13411/13429 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 29639 event pairs, 504 based on Foata normal form. 2/3787 useless extension candidates. Maximal degree in co-relation 12341. Up to 1677 conditions per place. [2022-12-11 23:57:01,848 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 171 selfloop transitions, 44 changer transitions 42/341 dead transitions. [2022-12-11 23:57:01,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 341 transitions, 3032 flow [2022-12-11 23:57:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 23:57:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 23:57:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2984 transitions. [2022-12-11 23:57:01,855 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6053966321769122 [2022-12-11 23:57:01,856 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 80 predicate places. [2022-12-11 23:57:01,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 341 transitions, 3032 flow [2022-12-11 23:57:01,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 299 transitions, 2702 flow [2022-12-11 23:57:01,878 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 299 transitions, 2702 flow [2022-12-11 23:57:01,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:01,878 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:01,878 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:01,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 23:57:01,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash -300213525, now seen corresponding path program 2 times [2022-12-11 23:57:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:01,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903946326] [2022-12-11 23:57:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:02,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:02,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903946326] [2022-12-11 23:57:02,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903946326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:02,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:02,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:57:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139819430] [2022-12-11 23:57:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:02,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:57:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:02,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:57:02,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:57:02,605 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:02,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 299 transitions, 2702 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:02,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:02,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:02,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:03,825 INFO L130 PetriNetUnfolder]: 2090/4189 cut-off events. [2022-12-11 23:57:03,825 INFO L131 PetriNetUnfolder]: For 13436/13608 co-relation queries the response was YES. [2022-12-11 23:57:03,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18674 conditions, 4189 events. 2090/4189 cut-off events. For 13436/13608 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 29472 event pairs, 475 based on Foata normal form. 8/3840 useless extension candidates. Maximal degree in co-relation 16089. Up to 1677 conditions per place. [2022-12-11 23:57:03,853 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 310 selfloop transitions, 102 changer transitions 4/500 dead transitions. [2022-12-11 23:57:03,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 500 transitions, 5052 flow [2022-12-11 23:57:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-11 23:57:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-11 23:57:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3367 transitions. [2022-12-11 23:57:03,859 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6050314465408805 [2022-12-11 23:57:03,860 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 108 predicate places. [2022-12-11 23:57:03,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 500 transitions, 5052 flow [2022-12-11 23:57:03,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 496 transitions, 5011 flow [2022-12-11 23:57:03,883 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 496 transitions, 5011 flow [2022-12-11 23:57:03,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:03,885 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:03,885 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:03,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 23:57:03,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:03,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1996349479, now seen corresponding path program 3 times [2022-12-11 23:57:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:03,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090674426] [2022-12-11 23:57:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:05,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090674426] [2022-12-11 23:57:05,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090674426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:05,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:05,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:57:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920793895] [2022-12-11 23:57:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:05,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:57:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:57:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:57:05,054 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-11 23:57:05,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 496 transitions, 5011 flow. Second operand has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:05,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:05,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-11 23:57:05,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:06,562 INFO L130 PetriNetUnfolder]: 2099/4324 cut-off events. [2022-12-11 23:57:06,562 INFO L131 PetriNetUnfolder]: For 16122/16438 co-relation queries the response was YES. [2022-12-11 23:57:06,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22531 conditions, 4324 events. 2099/4324 cut-off events. For 16122/16438 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 31100 event pairs, 297 based on Foata normal form. 26/3999 useless extension candidates. Maximal degree in co-relation 19572. Up to 1681 conditions per place. [2022-12-11 23:57:06,592 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 361 selfloop transitions, 103 changer transitions 46/588 dead transitions. [2022-12-11 23:57:06,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 588 transitions, 6885 flow [2022-12-11 23:57:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 23:57:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 23:57:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2770 transitions. [2022-12-11 23:57:06,595 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5444182389937107 [2022-12-11 23:57:06,595 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 139 predicate places. [2022-12-11 23:57:06,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 588 transitions, 6885 flow [2022-12-11 23:57:06,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 542 transitions, 6372 flow [2022-12-11 23:57:06,618 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 542 transitions, 6372 flow [2022-12-11 23:57:06,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:06,619 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:06,619 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:06,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 23:57:06,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1668844809, now seen corresponding path program 1 times [2022-12-11 23:57:06,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345935055] [2022-12-11 23:57:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:06,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:07,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345935055] [2022-12-11 23:57:07,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345935055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:07,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:07,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:57:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909104497] [2022-12-11 23:57:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:57:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:57:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:57:07,353 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:07,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 542 transitions, 6372 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:07,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:07,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:07,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:08,690 INFO L130 PetriNetUnfolder]: 2775/5504 cut-off events. [2022-12-11 23:57:08,690 INFO L131 PetriNetUnfolder]: For 22596/23027 co-relation queries the response was YES. [2022-12-11 23:57:08,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34097 conditions, 5504 events. 2775/5504 cut-off events. For 22596/23027 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 41459 event pairs, 129 based on Foata normal form. 45/5128 useless extension candidates. Maximal degree in co-relation 29971. Up to 2758 conditions per place. [2022-12-11 23:57:08,724 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 496 selfloop transitions, 131 changer transitions 0/711 dead transitions. [2022-12-11 23:57:08,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 711 transitions, 9851 flow [2022-12-11 23:57:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-11 23:57:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-11 23:57:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3523 transitions. [2022-12-11 23:57:08,728 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6154786862334032 [2022-12-11 23:57:08,728 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 168 predicate places. [2022-12-11 23:57:08,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 711 transitions, 9851 flow [2022-12-11 23:57:08,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 711 transitions, 9851 flow [2022-12-11 23:57:08,762 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 711 transitions, 9851 flow [2022-12-11 23:57:08,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:08,763 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:08,763 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:08,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 23:57:08,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1496114125, now seen corresponding path program 2 times [2022-12-11 23:57:08,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:08,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965843375] [2022-12-11 23:57:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:08,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:09,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965843375] [2022-12-11 23:57:09,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965843375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:09,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:09,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:57:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484634292] [2022-12-11 23:57:09,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:09,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:57:09,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:57:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:57:09,482 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:09,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 711 transitions, 9851 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:09,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:09,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:09,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:10,665 INFO L130 PetriNetUnfolder]: 2783/5533 cut-off events. [2022-12-11 23:57:10,666 INFO L131 PetriNetUnfolder]: For 24752/25300 co-relation queries the response was YES. [2022-12-11 23:57:10,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39008 conditions, 5533 events. 2783/5533 cut-off events. For 24752/25300 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 41756 event pairs, 121 based on Foata normal form. 36/5147 useless extension candidates. Maximal degree in co-relation 34433. Up to 2758 conditions per place. [2022-12-11 23:57:10,700 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 523 selfloop transitions, 122 changer transitions 14/743 dead transitions. [2022-12-11 23:57:10,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 743 transitions, 11575 flow [2022-12-11 23:57:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 23:57:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 23:57:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2763 transitions. [2022-12-11 23:57:10,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5992192582953806 [2022-12-11 23:57:10,703 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 196 predicate places. [2022-12-11 23:57:10,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 743 transitions, 11575 flow [2022-12-11 23:57:10,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 729 transitions, 11347 flow [2022-12-11 23:57:10,732 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 729 transitions, 11347 flow [2022-12-11 23:57:10,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:10,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:10,733 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 23:57:10,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:10,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1058139387, now seen corresponding path program 3 times [2022-12-11 23:57:10,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:10,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352417397] [2022-12-11 23:57:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:10,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:11,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:11,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352417397] [2022-12-11 23:57:11,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352417397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:11,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:11,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:57:11,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847132244] [2022-12-11 23:57:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:11,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:57:11,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:57:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:57:11,715 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-11 23:57:11,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 729 transitions, 11347 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 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) [2022-12-11 23:57:11,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:11,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-11 23:57:11,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:13,614 INFO L130 PetriNetUnfolder]: 2959/5850 cut-off events. [2022-12-11 23:57:13,614 INFO L131 PetriNetUnfolder]: For 28952/29577 co-relation queries the response was YES. [2022-12-11 23:57:13,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46315 conditions, 5850 events. 2959/5850 cut-off events. For 28952/29577 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 44864 event pairs, 120 based on Foata normal form. 60/5477 useless extension candidates. Maximal degree in co-relation 40973. Up to 3036 conditions per place. [2022-12-11 23:57:13,662 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 597 selfloop transitions, 178 changer transitions 5/858 dead transitions. [2022-12-11 23:57:13,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 858 transitions, 14998 flow [2022-12-11 23:57:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-11 23:57:13,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-11 23:57:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3172 transitions. [2022-12-11 23:57:13,665 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5541579315164221 [2022-12-11 23:57:13,666 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 227 predicate places. [2022-12-11 23:57:13,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 858 transitions, 14998 flow [2022-12-11 23:57:13,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 368 places, 853 transitions, 14928 flow [2022-12-11 23:57:13,699 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 853 transitions, 14928 flow [2022-12-11 23:57:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 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) [2022-12-11 23:57:13,699 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:13,699 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:13,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 23:57:13,700 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 154115433, now seen corresponding path program 4 times [2022-12-11 23:57:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453405318] [2022-12-11 23:57:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:13,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:14,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:14,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453405318] [2022-12-11 23:57:14,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453405318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:14,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:14,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:57:14,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462619231] [2022-12-11 23:57:14,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:14,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:57:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:57:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:57:14,303 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:14,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 853 transitions, 14928 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:14,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:14,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:14,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:15,719 INFO L130 PetriNetUnfolder]: 3170/6161 cut-off events. [2022-12-11 23:57:15,720 INFO L131 PetriNetUnfolder]: For 30947/31583 co-relation queries the response was YES. [2022-12-11 23:57:15,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54419 conditions, 6161 events. 3170/6161 cut-off events. For 30947/31583 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 47248 event pairs, 273 based on Foata normal form. 38/5735 useless extension candidates. Maximal degree in co-relation 48355. Up to 3250 conditions per place. [2022-12-11 23:57:15,761 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 726 selfloop transitions, 161 changer transitions 0/971 dead transitions. [2022-12-11 23:57:15,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 971 transitions, 18748 flow [2022-12-11 23:57:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-11 23:57:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-11 23:57:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2898 transitions. [2022-12-11 23:57:15,764 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6075471698113207 [2022-12-11 23:57:15,765 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 256 predicate places. [2022-12-11 23:57:15,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 971 transitions, 18748 flow [2022-12-11 23:57:15,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 971 transitions, 18748 flow [2022-12-11 23:57:15,797 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 971 transitions, 18748 flow [2022-12-11 23:57:15,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:15,798 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:15,799 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:15,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 23:57:15,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1332107137, now seen corresponding path program 5 times [2022-12-11 23:57:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318139106] [2022-12-11 23:57:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:16,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318139106] [2022-12-11 23:57:16,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318139106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:16,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:16,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:57:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098322643] [2022-12-11 23:57:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:16,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:57:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:57:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:57:16,638 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-11 23:57:16,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 971 transitions, 18748 flow. Second operand has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:16,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:16,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-11 23:57:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:18,483 INFO L130 PetriNetUnfolder]: 3213/6251 cut-off events. [2022-12-11 23:57:18,483 INFO L131 PetriNetUnfolder]: For 33510/34290 co-relation queries the response was YES. [2022-12-11 23:57:18,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60602 conditions, 6251 events. 3213/6251 cut-off events. For 33510/34290 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 48086 event pairs, 275 based on Foata normal form. 50/5827 useless extension candidates. Maximal degree in co-relation 54027. Up to 3250 conditions per place. [2022-12-11 23:57:18,524 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 760 selfloop transitions, 167 changer transitions 10/1015 dead transitions. [2022-12-11 23:57:18,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 1015 transitions, 21350 flow [2022-12-11 23:57:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:57:18,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:57:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2261 transitions. [2022-12-11 23:57:18,527 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5469279148524432 [2022-12-11 23:57:18,527 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 281 predicate places. [2022-12-11 23:57:18,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 1015 transitions, 21350 flow [2022-12-11 23:57:18,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 1005 transitions, 21170 flow [2022-12-11 23:57:18,564 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 1005 transitions, 21170 flow [2022-12-11 23:57:18,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:18,565 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:18,565 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 23:57:18,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1417708101, now seen corresponding path program 6 times [2022-12-11 23:57:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:18,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139968332] [2022-12-11 23:57:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:19,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:19,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139968332] [2022-12-11 23:57:19,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139968332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:19,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:19,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:57:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879745835] [2022-12-11 23:57:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:57:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:57:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:57:19,395 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-11 23:57:19,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1005 transitions, 21170 flow. Second operand has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 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) [2022-12-11 23:57:19,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:19,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-11 23:57:19,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:21,234 INFO L130 PetriNetUnfolder]: 3385/6593 cut-off events. [2022-12-11 23:57:21,234 INFO L131 PetriNetUnfolder]: For 40281/41183 co-relation queries the response was YES. [2022-12-11 23:57:21,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69454 conditions, 6593 events. 3385/6593 cut-off events. For 40281/41183 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 51775 event pairs, 275 based on Foata normal form. 30/6145 useless extension candidates. Maximal degree in co-relation 61875. Up to 3590 conditions per place. [2022-12-11 23:57:21,352 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 805 selfloop transitions, 194 changer transitions 0/1077 dead transitions. [2022-12-11 23:57:21,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1077 transitions, 24934 flow [2022-12-11 23:57:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:57:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:57:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2446 transitions. [2022-12-11 23:57:21,358 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5494159928122192 [2022-12-11 23:57:21,358 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 308 predicate places. [2022-12-11 23:57:21,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 1077 transitions, 24934 flow [2022-12-11 23:57:21,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 1077 transitions, 24934 flow [2022-12-11 23:57:21,400 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 1077 transitions, 24934 flow [2022-12-11 23:57:21,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.5909090909091) internal successors, (1817), 22 states have internal predecessors, (1817), 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) [2022-12-11 23:57:21,401 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:21,401 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:21,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 23:57:21,401 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:21,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:21,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1246052395, now seen corresponding path program 7 times [2022-12-11 23:57:21,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:21,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258736190] [2022-12-11 23:57:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:21,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:21,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258736190] [2022-12-11 23:57:21,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258736190] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:57:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17840686] [2022-12-11 23:57:21,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 23:57:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:57:21,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:57:21,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:57:21,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 23:57:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:22,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-11 23:57:22,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:57:22,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-11 23:57:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:22,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:57:22,631 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-11 23:57:22,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-12-11 23:57:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:22,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17840686] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:57:22,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:57:22,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 28 [2022-12-11 23:57:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535541826] [2022-12-11 23:57:22,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:57:22,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-11 23:57:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-11 23:57:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2022-12-11 23:57:22,748 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:22,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 1077 transitions, 24934 flow. Second operand has 28 states, 28 states have (on average 92.57142857142857) internal successors, (2592), 28 states have internal predecessors, (2592), 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) [2022-12-11 23:57:22,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:22,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:22,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:25,420 INFO L130 PetriNetUnfolder]: 3733/7181 cut-off events. [2022-12-11 23:57:25,420 INFO L131 PetriNetUnfolder]: For 48451/49715 co-relation queries the response was YES. [2022-12-11 23:57:25,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82487 conditions, 7181 events. 3733/7181 cut-off events. For 48451/49715 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 56850 event pairs, 163 based on Foata normal form. 70/6750 useless extension candidates. Maximal degree in co-relation 73925. Up to 4053 conditions per place. [2022-12-11 23:57:25,480 INFO L137 encePairwiseOnDemand]: 124/159 looper letters, 969 selfloop transitions, 316 changer transitions 0/1369 dead transitions. [2022-12-11 23:57:25,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1369 transitions, 34515 flow [2022-12-11 23:57:25,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-11 23:57:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-11 23:57:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4816 transitions. [2022-12-11 23:57:25,484 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6057861635220125 [2022-12-11 23:57:25,485 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 357 predicate places. [2022-12-11 23:57:25,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 498 places, 1369 transitions, 34515 flow [2022-12-11 23:57:25,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 498 places, 1369 transitions, 34515 flow [2022-12-11 23:57:25,546 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 1369 transitions, 34515 flow [2022-12-11 23:57:25,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 92.57142857142857) internal successors, (2592), 28 states have internal predecessors, (2592), 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) [2022-12-11 23:57:25,547 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:25,547 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:25,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 23:57:25,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:57:25,749 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:25,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1909644935, now seen corresponding path program 4 times [2022-12-11 23:57:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:25,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174585668] [2022-12-11 23:57:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:25,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:26,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174585668] [2022-12-11 23:57:26,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174585668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:26,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:26,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:57:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735694115] [2022-12-11 23:57:26,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:26,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:57:26,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:57:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:57:26,330 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:26,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 1369 transitions, 34515 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:26,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:26,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:28,208 INFO L130 PetriNetUnfolder]: 3752/7240 cut-off events. [2022-12-11 23:57:28,209 INFO L131 PetriNetUnfolder]: For 53869/55001 co-relation queries the response was YES. [2022-12-11 23:57:28,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89476 conditions, 7240 events. 3752/7240 cut-off events. For 53869/55001 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 57632 event pairs, 163 based on Foata normal form. 28/6767 useless extension candidates. Maximal degree in co-relation 80124. Up to 4053 conditions per place. [2022-12-11 23:57:28,285 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1163 selfloop transitions, 128 changer transitions 15/1390 dead transitions. [2022-12-11 23:57:28,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 1390 transitions, 37665 flow [2022-12-11 23:57:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:57:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:57:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2676 transitions. [2022-12-11 23:57:28,302 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.601078167115903 [2022-12-11 23:57:28,302 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 384 predicate places. [2022-12-11 23:57:28,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 1390 transitions, 37665 flow [2022-12-11 23:57:28,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 523 places, 1375 transitions, 37255 flow [2022-12-11 23:57:28,366 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 1375 transitions, 37255 flow [2022-12-11 23:57:28,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:28,367 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:28,367 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:28,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-11 23:57:28,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1011251819, now seen corresponding path program 5 times [2022-12-11 23:57:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:28,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089434897] [2022-12-11 23:57:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:28,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:28,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089434897] [2022-12-11 23:57:28,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089434897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:28,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:28,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:57:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598661910] [2022-12-11 23:57:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:28,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:57:28,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:57:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:57:28,818 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:28,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 1375 transitions, 37255 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:28,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:28,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:30,747 INFO L130 PetriNetUnfolder]: 3728/7213 cut-off events. [2022-12-11 23:57:30,748 INFO L131 PetriNetUnfolder]: For 59723/61317 co-relation queries the response was YES. [2022-12-11 23:57:30,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95265 conditions, 7213 events. 3728/7213 cut-off events. For 59723/61317 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 57593 event pairs, 165 based on Foata normal form. 42/6756 useless extension candidates. Maximal degree in co-relation 85504. Up to 4053 conditions per place. [2022-12-11 23:57:30,808 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1150 selfloop transitions, 128 changer transitions 7/1369 dead transitions. [2022-12-11 23:57:30,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 1369 transitions, 39664 flow [2022-12-11 23:57:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:57:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:57:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2490 transitions. [2022-12-11 23:57:30,810 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.602322206095791 [2022-12-11 23:57:30,815 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 407 predicate places. [2022-12-11 23:57:30,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 548 places, 1369 transitions, 39664 flow [2022-12-11 23:57:30,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 1362 transitions, 39465 flow [2022-12-11 23:57:30,873 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 1362 transitions, 39465 flow [2022-12-11 23:57:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:57:30,873 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:30,873 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:30,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-11 23:57:30,874 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 601429463, now seen corresponding path program 8 times [2022-12-11 23:57:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602497428] [2022-12-11 23:57:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602497428] [2022-12-11 23:57:31,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602497428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:31,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:31,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:57:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463354610] [2022-12-11 23:57:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:31,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:57:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:57:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:57:31,709 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 159 [2022-12-11 23:57:31,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1362 transitions, 39465 flow. Second operand has 22 states, 22 states have (on average 86.45454545454545) internal successors, (1902), 22 states have internal predecessors, (1902), 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) [2022-12-11 23:57:31,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:31,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 159 [2022-12-11 23:57:31,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:34,194 INFO L130 PetriNetUnfolder]: 3823/7393 cut-off events. [2022-12-11 23:57:34,194 INFO L131 PetriNetUnfolder]: For 64978/66816 co-relation queries the response was YES. [2022-12-11 23:57:34,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104057 conditions, 7393 events. 3823/7393 cut-off events. For 64978/66816 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 59486 event pairs, 261 based on Foata normal form. 40/6926 useless extension candidates. Maximal degree in co-relation 93484. Up to 4195 conditions per place. [2022-12-11 23:57:34,258 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1116 selfloop transitions, 211 changer transitions 0/1408 dead transitions. [2022-12-11 23:57:34,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1408 transitions, 43559 flow [2022-12-11 23:57:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 23:57:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 23:57:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2817 transitions. [2022-12-11 23:57:34,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5715155203895314 [2022-12-11 23:57:34,265 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 434 predicate places. [2022-12-11 23:57:34,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 575 places, 1408 transitions, 43559 flow [2022-12-11 23:57:34,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 575 places, 1408 transitions, 43559 flow [2022-12-11 23:57:34,331 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 1408 transitions, 43559 flow [2022-12-11 23:57:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 86.45454545454545) internal successors, (1902), 22 states have internal predecessors, (1902), 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) [2022-12-11 23:57:34,332 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:34,332 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-11 23:57:34,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash -657384573, now seen corresponding path program 9 times [2022-12-11 23:57:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:34,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517967339] [2022-12-11 23:57:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:35,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517967339] [2022-12-11 23:57:35,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517967339] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:57:35,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887200441] [2022-12-11 23:57:35,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 23:57:35,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:57:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:57:35,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:57:35,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 23:57:35,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 23:57:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:57:35,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-11 23:57:35,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:57:35,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 23:57:35,398 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 23:57:35,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 23:57:35,898 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 23:57:35,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 23:57:36,329 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:57:36,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-12-11 23:57:36,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-11 23:57:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:57:36,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:57:36,886 INFO L321 Elim1Store]: treesize reduction 15, result has 82.4 percent of original size [2022-12-11 23:57:36,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 139 [2022-12-11 23:57:36,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:57:36,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 50 [2022-12-11 23:57:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:57:38,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887200441] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:57:38,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:57:38,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 26] total 68 [2022-12-11 23:57:38,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099227073] [2022-12-11 23:57:38,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:57:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-11 23:57:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-11 23:57:38,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=4177, Unknown=2, NotChecked=0, Total=4556 [2022-12-11 23:57:38,285 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 159 [2022-12-11 23:57:38,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1408 transitions, 43559 flow. Second operand has 68 states, 68 states have (on average 46.39705882352941) internal successors, (3155), 68 states have internal predecessors, (3155), 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) [2022-12-11 23:57:38,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:38,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 159 [2022-12-11 23:57:38,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:44,301 INFO L130 PetriNetUnfolder]: 4259/8131 cut-off events. [2022-12-11 23:57:44,301 INFO L131 PetriNetUnfolder]: For 87477/89203 co-relation queries the response was YES. [2022-12-11 23:57:44,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120455 conditions, 8131 events. 4259/8131 cut-off events. For 87477/89203 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 65280 event pairs, 205 based on Foata normal form. 72/7676 useless extension candidates. Maximal degree in co-relation 108650. Up to 4710 conditions per place. [2022-12-11 23:57:44,372 INFO L137 encePairwiseOnDemand]: 113/159 looper letters, 1121 selfloop transitions, 418 changer transitions 0/1576 dead transitions. [2022-12-11 23:57:44,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 1576 transitions, 51760 flow [2022-12-11 23:57:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-11 23:57:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-11 23:57:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3270 transitions. [2022-12-11 23:57:44,375 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31160663236134933 [2022-12-11 23:57:44,375 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 499 predicate places. [2022-12-11 23:57:44,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 640 places, 1576 transitions, 51760 flow [2022-12-11 23:57:44,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 640 places, 1576 transitions, 51760 flow [2022-12-11 23:57:44,443 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 1576 transitions, 51760 flow [2022-12-11 23:57:44,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 46.39705882352941) internal successors, (3155), 68 states have internal predecessors, (3155), 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) [2022-12-11 23:57:44,444 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:44,444 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:44,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-11 23:57:44,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:57:44,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash -271893781, now seen corresponding path program 6 times [2022-12-11 23:57:44,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053567155] [2022-12-11 23:57:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:44,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:45,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:45,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053567155] [2022-12-11 23:57:45,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053567155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:45,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:45,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:57:45,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616883289] [2022-12-11 23:57:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:57:45,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:57:45,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:57:45,157 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:57:45,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 1576 transitions, 51760 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:45,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:45,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:57:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:47,580 INFO L130 PetriNetUnfolder]: 4304/8208 cut-off events. [2022-12-11 23:57:47,581 INFO L131 PetriNetUnfolder]: For 94854/96624 co-relation queries the response was YES. [2022-12-11 23:57:47,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128844 conditions, 8208 events. 4304/8208 cut-off events. For 94854/96624 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 66216 event pairs, 205 based on Foata normal form. 40/7717 useless extension candidates. Maximal degree in co-relation 116415. Up to 4710 conditions per place. [2022-12-11 23:57:47,651 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1358 selfloop transitions, 163 changer transitions 0/1611 dead transitions. [2022-12-11 23:57:47,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 1611 transitions, 55988 flow [2022-12-11 23:57:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 23:57:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 23:57:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2609 transitions. [2022-12-11 23:57:47,654 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6077335196832052 [2022-12-11 23:57:47,654 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 525 predicate places. [2022-12-11 23:57:47,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 666 places, 1611 transitions, 55988 flow [2022-12-11 23:57:47,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 666 places, 1611 transitions, 55988 flow [2022-12-11 23:57:47,726 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 1611 transitions, 55988 flow [2022-12-11 23:57:47,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:57:47,727 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:47,727 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:47,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-11 23:57:47,727 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1599919641, now seen corresponding path program 7 times [2022-12-11 23:57:47,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:47,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396456529] [2022-12-11 23:57:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:48,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396456529] [2022-12-11 23:57:48,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396456529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:48,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:48,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:57:48,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792221946] [2022-12-11 23:57:48,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:48,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:57:48,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:57:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:57:48,584 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-11 23:57:48,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 1611 transitions, 55988 flow. Second operand has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:48,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:48,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-11 23:57:48,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:51,519 INFO L130 PetriNetUnfolder]: 4305/8239 cut-off events. [2022-12-11 23:57:51,520 INFO L131 PetriNetUnfolder]: For 106288/108160 co-relation queries the response was YES. [2022-12-11 23:57:51,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136219 conditions, 8239 events. 4305/8239 cut-off events. For 106288/108160 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 66541 event pairs, 209 based on Foata normal form. 44/7752 useless extension candidates. Maximal degree in co-relation 123108. Up to 4710 conditions per place. [2022-12-11 23:57:51,598 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1356 selfloop transitions, 170 changer transitions 7/1617 dead transitions. [2022-12-11 23:57:51,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 1617 transitions, 59263 flow [2022-12-11 23:57:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 23:57:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 23:57:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2337 transitions. [2022-12-11 23:57:51,601 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5443745632424878 [2022-12-11 23:57:51,601 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 551 predicate places. [2022-12-11 23:57:51,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 692 places, 1617 transitions, 59263 flow [2022-12-11 23:57:51,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 691 places, 1610 transitions, 59008 flow [2022-12-11 23:57:51,680 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 1610 transitions, 59008 flow [2022-12-11 23:57:51,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:51,681 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:51,681 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-11 23:57:51,681 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash 316774041, now seen corresponding path program 8 times [2022-12-11 23:57:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324619134] [2022-12-11 23:57:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:52,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:52,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324619134] [2022-12-11 23:57:52,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324619134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:52,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:52,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:57:52,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536287598] [2022-12-11 23:57:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:52,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:57:52,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:57:52,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:57:52,562 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 159 [2022-12-11 23:57:52,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 1610 transitions, 59008 flow. Second operand has 22 states, 22 states have (on average 86.45454545454545) internal successors, (1902), 22 states have internal predecessors, (1902), 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) [2022-12-11 23:57:52,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:52,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 159 [2022-12-11 23:57:52,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:57:55,671 INFO L130 PetriNetUnfolder]: 4347/8245 cut-off events. [2022-12-11 23:57:55,671 INFO L131 PetriNetUnfolder]: For 112029/114361 co-relation queries the response was YES. [2022-12-11 23:57:55,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144579 conditions, 8245 events. 4347/8245 cut-off events. For 112029/114361 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 66141 event pairs, 205 based on Foata normal form. 40/7752 useless extension candidates. Maximal degree in co-relation 130887. Up to 4710 conditions per place. [2022-12-11 23:57:55,746 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1359 selfloop transitions, 185 changer transitions 0/1631 dead transitions. [2022-12-11 23:57:55,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 1631 transitions, 62886 flow [2022-12-11 23:57:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 23:57:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 23:57:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2462 transitions. [2022-12-11 23:57:55,748 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5734917307244352 [2022-12-11 23:57:55,749 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 576 predicate places. [2022-12-11 23:57:55,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 717 places, 1631 transitions, 62886 flow [2022-12-11 23:57:55,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 717 places, 1631 transitions, 62886 flow [2022-12-11 23:57:55,828 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 1631 transitions, 62886 flow [2022-12-11 23:57:55,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 86.45454545454545) internal successors, (1902), 22 states have internal predecessors, (1902), 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) [2022-12-11 23:57:55,828 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:57:55,828 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:57:55,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-11 23:57:55,829 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:57:55,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:57:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash -358140407, now seen corresponding path program 9 times [2022-12-11 23:57:55,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:57:55,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020084534] [2022-12-11 23:57:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:57:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:57:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:57:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:57:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:57:56,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020084534] [2022-12-11 23:57:56,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020084534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:57:56,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:57:56,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:57:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034405827] [2022-12-11 23:57:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:57:56,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:57:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:57:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:57:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:57:56,646 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 159 [2022-12-11 23:57:56,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 1631 transitions, 62886 flow. Second operand has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:57:56,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:57:56,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 159 [2022-12-11 23:57:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:00,230 INFO L130 PetriNetUnfolder]: 4353/8331 cut-off events. [2022-12-11 23:58:00,230 INFO L131 PetriNetUnfolder]: For 127345/129489 co-relation queries the response was YES. [2022-12-11 23:58:00,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152294 conditions, 8331 events. 4353/8331 cut-off events. For 127345/129489 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 67400 event pairs, 205 based on Foata normal form. 46/7844 useless extension candidates. Maximal degree in co-relation 137818. Up to 4710 conditions per place. [2022-12-11 23:58:00,367 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1379 selfloop transitions, 162 changer transitions 15/1640 dead transitions. [2022-12-11 23:58:00,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 1640 transitions, 66364 flow [2022-12-11 23:58:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 23:58:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 23:58:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2500 transitions. [2022-12-11 23:58:00,369 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5421817393190197 [2022-12-11 23:58:00,369 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 604 predicate places. [2022-12-11 23:58:00,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 745 places, 1640 transitions, 66364 flow [2022-12-11 23:58:00,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 739 places, 1625 transitions, 65744 flow [2022-12-11 23:58:00,455 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 1625 transitions, 65744 flow [2022-12-11 23:58:00,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 82.71428571428571) internal successors, (1737), 21 states have internal predecessors, (1737), 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) [2022-12-11 23:58:00,455 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:00,455 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-11 23:58:00,455 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2005738155, now seen corresponding path program 10 times [2022-12-11 23:58:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751024050] [2022-12-11 23:58:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:01,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:01,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751024050] [2022-12-11 23:58:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751024050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:01,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:01,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:58:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466151944] [2022-12-11 23:58:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:58:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:58:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:58:01,074 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:01,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 1625 transitions, 65744 flow. Second operand has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 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) [2022-12-11 23:58:01,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:01,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:01,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:04,035 INFO L130 PetriNetUnfolder]: 4474/8544 cut-off events. [2022-12-11 23:58:04,035 INFO L131 PetriNetUnfolder]: For 142296/144466 co-relation queries the response was YES. [2022-12-11 23:58:04,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163434 conditions, 8544 events. 4474/8544 cut-off events. For 142296/144466 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 69231 event pairs, 124 based on Foata normal form. 37/8027 useless extension candidates. Maximal degree in co-relation 148463. Up to 4710 conditions per place. [2022-12-11 23:58:04,114 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1439 selfloop transitions, 216 changer transitions 10/1750 dead transitions. [2022-12-11 23:58:04,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 1750 transitions, 73888 flow [2022-12-11 23:58:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 23:58:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 23:58:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2368 transitions. [2022-12-11 23:58:04,117 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5515956207780107 [2022-12-11 23:58:04,117 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 624 predicate places. [2022-12-11 23:58:04,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 765 places, 1750 transitions, 73888 flow [2022-12-11 23:58:04,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 765 places, 1740 transitions, 73488 flow [2022-12-11 23:58:04,201 INFO L495 AbstractCegarLoop]: Abstraction has has 765 places, 1740 transitions, 73488 flow [2022-12-11 23:58:04,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 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) [2022-12-11 23:58:04,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:04,201 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:04,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-11 23:58:04,201 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -385840015, now seen corresponding path program 11 times [2022-12-11 23:58:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:04,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263422473] [2022-12-11 23:58:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:04,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:04,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263422473] [2022-12-11 23:58:04,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263422473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:04,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:04,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:58:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682884492] [2022-12-11 23:58:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:04,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:58:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:58:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:58:04,582 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:58:04,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 1740 transitions, 73488 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:58:04,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:04,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:58:04,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:07,761 INFO L130 PetriNetUnfolder]: 4622/8789 cut-off events. [2022-12-11 23:58:07,761 INFO L131 PetriNetUnfolder]: For 151919/154576 co-relation queries the response was YES. [2022-12-11 23:58:07,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176173 conditions, 8789 events. 4622/8789 cut-off events. For 151919/154576 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 71438 event pairs, 207 based on Foata normal form. 23/8247 useless extension candidates. Maximal degree in co-relation 160023. Up to 4927 conditions per place. [2022-12-11 23:58:07,851 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1463 selfloop transitions, 245 changer transitions 0/1798 dead transitions. [2022-12-11 23:58:07,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 1798 transitions, 79444 flow [2022-12-11 23:58:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:58:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:58:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2713 transitions. [2022-12-11 23:58:07,853 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6093890386343217 [2022-12-11 23:58:07,854 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 651 predicate places. [2022-12-11 23:58:07,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 792 places, 1798 transitions, 79444 flow [2022-12-11 23:58:07,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 792 places, 1798 transitions, 79444 flow [2022-12-11 23:58:07,945 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 1798 transitions, 79444 flow [2022-12-11 23:58:07,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:58:07,946 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:07,946 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-11 23:58:07,946 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash 602687533, now seen corresponding path program 12 times [2022-12-11 23:58:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:07,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844702592] [2022-12-11 23:58:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:08,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:08,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844702592] [2022-12-11 23:58:08,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844702592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:08,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:08,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:58:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758463470] [2022-12-11 23:58:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:58:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:58:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:58:08,556 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:08,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 1798 transitions, 79444 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:58:08,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:08,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:08,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:12,399 INFO L130 PetriNetUnfolder]: 4776/9039 cut-off events. [2022-12-11 23:58:12,399 INFO L131 PetriNetUnfolder]: For 170815/174013 co-relation queries the response was YES. [2022-12-11 23:58:12,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189776 conditions, 9039 events. 4776/9039 cut-off events. For 170815/174013 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 73817 event pairs, 209 based on Foata normal form. 22/8486 useless extension candidates. Maximal degree in co-relation 172393. Up to 5144 conditions per place. [2022-12-11 23:58:12,528 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1471 selfloop transitions, 300 changer transitions 0/1856 dead transitions. [2022-12-11 23:58:12,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 1856 transitions, 85642 flow [2022-12-11 23:58:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 23:58:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 23:58:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2565 transitions. [2022-12-11 23:58:12,530 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5562784645413142 [2022-12-11 23:58:12,530 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 679 predicate places. [2022-12-11 23:58:12,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 820 places, 1856 transitions, 85642 flow [2022-12-11 23:58:12,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 820 places, 1856 transitions, 85642 flow [2022-12-11 23:58:12,654 INFO L495 AbstractCegarLoop]: Abstraction has has 820 places, 1856 transitions, 85642 flow [2022-12-11 23:58:12,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:58:12,654 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:12,655 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-11 23:58:12,655 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 284623669, now seen corresponding path program 13 times [2022-12-11 23:58:12,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407804479] [2022-12-11 23:58:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:13,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:13,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407804479] [2022-12-11 23:58:13,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407804479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:13,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:13,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:58:13,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824537343] [2022-12-11 23:58:13,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:13,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:58:13,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:58:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:58:13,290 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:13,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 1856 transitions, 85642 flow. Second operand has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 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) [2022-12-11 23:58:13,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:13,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:13,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:16,937 INFO L130 PetriNetUnfolder]: 4660/8848 cut-off events. [2022-12-11 23:58:16,937 INFO L131 PetriNetUnfolder]: For 175979/179463 co-relation queries the response was YES. [2022-12-11 23:58:16,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193492 conditions, 8848 events. 4660/8848 cut-off events. For 175979/179463 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 72188 event pairs, 209 based on Foata normal form. 34/8315 useless extension candidates. Maximal degree in co-relation 175835. Up to 4998 conditions per place. [2022-12-11 23:58:17,033 INFO L137 encePairwiseOnDemand]: 126/159 looper letters, 1529 selfloop transitions, 212 changer transitions 10/1836 dead transitions. [2022-12-11 23:58:17,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 1836 transitions, 88232 flow [2022-12-11 23:58:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:58:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:58:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2285 transitions. [2022-12-11 23:58:17,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5527334300919207 [2022-12-11 23:58:17,036 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 704 predicate places. [2022-12-11 23:58:17,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 845 places, 1836 transitions, 88232 flow [2022-12-11 23:58:17,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 845 places, 1826 transitions, 87772 flow [2022-12-11 23:58:17,146 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1826 transitions, 87772 flow [2022-12-11 23:58:17,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 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) [2022-12-11 23:58:17,146 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:17,146 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:17,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-11 23:58:17,146 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:17,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1152250505, now seen corresponding path program 14 times [2022-12-11 23:58:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:17,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067021716] [2022-12-11 23:58:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:17,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067021716] [2022-12-11 23:58:17,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067021716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:17,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:17,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:58:17,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598387978] [2022-12-11 23:58:17,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:17,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:58:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:58:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:58:17,768 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:17,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1826 transitions, 87772 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:58:17,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:17,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:17,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:21,585 INFO L130 PetriNetUnfolder]: 4868/9228 cut-off events. [2022-12-11 23:58:21,585 INFO L131 PetriNetUnfolder]: For 189650/193696 co-relation queries the response was YES. [2022-12-11 23:58:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209731 conditions, 9228 events. 4868/9228 cut-off events. For 189650/193696 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 75875 event pairs, 309 based on Foata normal form. 24/8667 useless extension candidates. Maximal degree in co-relation 190565. Up to 5294 conditions per place. [2022-12-11 23:58:21,832 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1542 selfloop transitions, 292 changer transitions 0/1919 dead transitions. [2022-12-11 23:58:21,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 1919 transitions, 96198 flow [2022-12-11 23:58:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 23:58:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 23:58:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2729 transitions. [2022-12-11 23:58:21,834 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5536620004057619 [2022-12-11 23:58:21,834 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 734 predicate places. [2022-12-11 23:58:21,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 875 places, 1919 transitions, 96198 flow [2022-12-11 23:58:21,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 875 places, 1919 transitions, 96198 flow [2022-12-11 23:58:21,942 INFO L495 AbstractCegarLoop]: Abstraction has has 875 places, 1919 transitions, 96198 flow [2022-12-11 23:58:21,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:58:21,943 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:21,943 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:21,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-11 23:58:21,943 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:21,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1843109489, now seen corresponding path program 15 times [2022-12-11 23:58:21,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:21,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223623657] [2022-12-11 23:58:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:21,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:22,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223623657] [2022-12-11 23:58:22,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223623657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:22,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:22,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:58:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891337373] [2022-12-11 23:58:22,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:22,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:58:22,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:58:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:58:22,515 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:22,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 1919 transitions, 96198 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:58:22,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:22,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:22,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:26,630 INFO L130 PetriNetUnfolder]: 4854/9244 cut-off events. [2022-12-11 23:58:26,630 INFO L131 PetriNetUnfolder]: For 215075/219183 co-relation queries the response was YES. [2022-12-11 23:58:26,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217550 conditions, 9244 events. 4854/9244 cut-off events. For 215075/219183 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 76519 event pairs, 234 based on Foata normal form. 29/8693 useless extension candidates. Maximal degree in co-relation 197679. Up to 5294 conditions per place. [2022-12-11 23:58:26,737 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1602 selfloop transitions, 203 changer transitions 22/1912 dead transitions. [2022-12-11 23:58:26,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 1912 transitions, 99524 flow [2022-12-11 23:58:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 23:58:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 23:58:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2524 transitions. [2022-12-11 23:58:26,739 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5473866840164823 [2022-12-11 23:58:26,740 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 762 predicate places. [2022-12-11 23:58:26,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 903 places, 1912 transitions, 99524 flow [2022-12-11 23:58:26,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 901 places, 1890 transitions, 98392 flow [2022-12-11 23:58:26,852 INFO L495 AbstractCegarLoop]: Abstraction has has 901 places, 1890 transitions, 98392 flow [2022-12-11 23:58:26,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:58:26,852 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:26,852 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:26,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-11 23:58:26,853 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1618765457, now seen corresponding path program 16 times [2022-12-11 23:58:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:26,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624670237] [2022-12-11 23:58:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:27,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624670237] [2022-12-11 23:58:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624670237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:58:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187598873] [2022-12-11 23:58:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:58:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:58:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:58:27,294 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:58:27,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 901 places, 1890 transitions, 98392 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:58:27,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:27,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:58:27,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:31,303 INFO L130 PetriNetUnfolder]: 4897/9322 cut-off events. [2022-12-11 23:58:31,304 INFO L131 PetriNetUnfolder]: For 239796/244028 co-relation queries the response was YES. [2022-12-11 23:58:31,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227449 conditions, 9322 events. 4897/9322 cut-off events. For 239796/244028 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 77089 event pairs, 236 based on Foata normal form. 21/8768 useless extension candidates. Maximal degree in co-relation 206433. Up to 5434 conditions per place. [2022-12-11 23:58:31,405 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1586 selfloop transitions, 241 changer transitions 0/1917 dead transitions. [2022-12-11 23:58:31,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 1917 transitions, 103568 flow [2022-12-11 23:58:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 23:58:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 23:58:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2608 transitions. [2022-12-11 23:58:31,407 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6075005823433497 [2022-12-11 23:58:31,408 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 786 predicate places. [2022-12-11 23:58:31,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 927 places, 1917 transitions, 103568 flow [2022-12-11 23:58:31,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 927 places, 1917 transitions, 103568 flow [2022-12-11 23:58:31,519 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1917 transitions, 103568 flow [2022-12-11 23:58:31,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:58:31,520 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:31,520 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:31,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-11 23:58:31,520 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1687674291, now seen corresponding path program 17 times [2022-12-11 23:58:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:31,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552400869] [2022-12-11 23:58:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552400869] [2022-12-11 23:58:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552400869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:32,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:32,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:58:32,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605009296] [2022-12-11 23:58:32,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:32,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:58:32,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:58:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:58:32,243 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:32,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1917 transitions, 103568 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:58:32,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:32,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:32,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:36,734 INFO L130 PetriNetUnfolder]: 4939/9420 cut-off events. [2022-12-11 23:58:36,734 INFO L131 PetriNetUnfolder]: For 250800/255196 co-relation queries the response was YES. [2022-12-11 23:58:36,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237633 conditions, 9420 events. 4939/9420 cut-off events. For 250800/255196 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 78234 event pairs, 332 based on Foata normal form. 27/8871 useless extension candidates. Maximal degree in co-relation 215432. Up to 5570 conditions per place. [2022-12-11 23:58:36,890 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1575 selfloop transitions, 274 changer transitions 0/1934 dead transitions. [2022-12-11 23:58:36,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 951 places, 1934 transitions, 108290 flow [2022-12-11 23:58:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:58:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:58:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2468 transitions. [2022-12-11 23:58:36,892 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5543575920934412 [2022-12-11 23:58:36,893 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 810 predicate places. [2022-12-11 23:58:36,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 951 places, 1934 transitions, 108290 flow [2022-12-11 23:58:37,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 951 places, 1934 transitions, 108290 flow [2022-12-11 23:58:37,158 INFO L495 AbstractCegarLoop]: Abstraction has has 951 places, 1934 transitions, 108290 flow [2022-12-11 23:58:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:58:37,167 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:37,167 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-11 23:58:37,168 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1095091079, now seen corresponding path program 18 times [2022-12-11 23:58:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:37,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173881875] [2022-12-11 23:58:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:37,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173881875] [2022-12-11 23:58:37,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173881875] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:58:37,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132717907] [2022-12-11 23:58:37,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 23:58:37,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:58:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:58:37,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:58:37,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 23:58:37,788 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-11 23:58:37,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:58:37,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-11 23:58:37,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:58:38,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-11 23:58:38,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 23:58:38,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 23:58:38,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-11 23:58:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:58:38,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:58:39,171 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:58:39,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2022-12-11 23:58:39,209 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-11 23:58:39,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 828 treesize of output 752 [2022-12-11 23:58:39,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:58:39,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:58:39,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:58:39,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 700 treesize of output 556 [2022-12-11 23:58:39,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:58:39,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:58:39,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:58:39,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 508 treesize of output 460 [2022-12-11 23:58:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 23:58:40,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132717907] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:58:40,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:58:40,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 15] total 47 [2022-12-11 23:58:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349520180] [2022-12-11 23:58:40,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:58:40,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-11 23:58:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-11 23:58:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1705, Unknown=33, NotChecked=0, Total=2162 [2022-12-11 23:58:40,403 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 159 [2022-12-11 23:58:40,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 1934 transitions, 108290 flow. Second operand has 47 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 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) [2022-12-11 23:58:40,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:40,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 159 [2022-12-11 23:58:40,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:46,040 INFO L130 PetriNetUnfolder]: 5184/9771 cut-off events. [2022-12-11 23:58:46,041 INFO L131 PetriNetUnfolder]: For 276091/281927 co-relation queries the response was YES. [2022-12-11 23:58:46,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257683 conditions, 9771 events. 5184/9771 cut-off events. For 276091/281927 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 81163 event pairs, 311 based on Foata normal form. 88/9262 useless extension candidates. Maximal degree in co-relation 233773. Up to 5912 conditions per place. [2022-12-11 23:58:46,157 INFO L137 encePairwiseOnDemand]: 121/159 looper letters, 1524 selfloop transitions, 458 changer transitions 0/2053 dead transitions. [2022-12-11 23:58:46,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 998 places, 2053 transitions, 119136 flow [2022-12-11 23:58:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-11 23:58:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-11 23:58:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3802 transitions. [2022-12-11 23:58:46,160 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4981656184486373 [2022-12-11 23:58:46,160 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 857 predicate places. [2022-12-11 23:58:46,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 998 places, 2053 transitions, 119136 flow [2022-12-11 23:58:46,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 998 places, 2053 transitions, 119136 flow [2022-12-11 23:58:46,376 INFO L495 AbstractCegarLoop]: Abstraction has has 998 places, 2053 transitions, 119136 flow [2022-12-11 23:58:46,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 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) [2022-12-11 23:58:46,377 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:46,377 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:46,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 23:58:46,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-11 23:58:46,581 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:46,582 INFO L85 PathProgramCache]: Analyzing trace with hash -106563531, now seen corresponding path program 19 times [2022-12-11 23:58:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:46,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744878195] [2022-12-11 23:58:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:47,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:47,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744878195] [2022-12-11 23:58:47,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744878195] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:58:47,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222340097] [2022-12-11 23:58:47,162 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 23:58:47,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:58:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:58:47,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:58:47,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 23:58:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:47,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-11 23:58:47,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:58:47,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 23:58:47,338 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 23:58:47,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 23:58:47,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-11 23:58:47,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-11 23:58:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:47,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:58:47,908 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int)) (~B~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_649))) (let ((.cse0 (select .cse2 ~B~0.base))) (or (not (= (select .cse0 (+ c_~B~0.offset (* c_~i_AB~0 4))) |c_thread1Thread1of1ForFork1_#t~mem1|)) (let ((.cse1 (* c_~i_BA~0 4))) (= (select .cse0 (+ .cse1 c_~B~0.offset)) (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse1)))))))) is different from false [2022-12-11 23:58:47,966 INFO L321 Elim1Store]: treesize reduction 15, result has 82.4 percent of original size [2022-12-11 23:58:47,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 159 [2022-12-11 23:58:47,989 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:58:47,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 96 [2022-12-11 23:58:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:48,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222340097] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:58:48,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:58:48,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 36 [2022-12-11 23:58:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781798488] [2022-12-11 23:58:48,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:58:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-11 23:58:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-11 23:58:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1031, Unknown=1, NotChecked=66, Total=1260 [2022-12-11 23:58:48,496 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:48,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 998 places, 2053 transitions, 119136 flow. Second operand has 36 states, 36 states have (on average 83.94444444444444) internal successors, (3022), 36 states have internal predecessors, (3022), 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) [2022-12-11 23:58:48,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:48,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:48,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:58:54,235 INFO L130 PetriNetUnfolder]: 5051/9548 cut-off events. [2022-12-11 23:58:54,235 INFO L131 PetriNetUnfolder]: For 302691/307147 co-relation queries the response was YES. [2022-12-11 23:58:54,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259531 conditions, 9548 events. 5051/9548 cut-off events. For 302691/307147 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 79330 event pairs, 128 based on Foata normal form. 89/9091 useless extension candidates. Maximal degree in co-relation 235772. Up to 5687 conditions per place. [2022-12-11 23:58:54,361 INFO L137 encePairwiseOnDemand]: 124/159 looper letters, 1532 selfloop transitions, 459 changer transitions 0/2076 dead transitions. [2022-12-11 23:58:54,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1039 places, 2076 transitions, 124532 flow [2022-12-11 23:58:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 23:58:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 23:58:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3716 transitions. [2022-12-11 23:58:54,363 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5564540281521414 [2022-12-11 23:58:54,364 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 898 predicate places. [2022-12-11 23:58:54,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 1039 places, 2076 transitions, 124532 flow [2022-12-11 23:58:54,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1039 places, 2076 transitions, 124532 flow [2022-12-11 23:58:54,649 INFO L495 AbstractCegarLoop]: Abstraction has has 1039 places, 2076 transitions, 124532 flow [2022-12-11 23:58:54,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 83.94444444444444) internal successors, (3022), 36 states have internal predecessors, (3022), 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) [2022-12-11 23:58:54,649 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:58:54,649 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:58:54,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 23:58:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:58:54,855 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:58:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:58:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1422766741, now seen corresponding path program 10 times [2022-12-11 23:58:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:58:54,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954407351] [2022-12-11 23:58:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:58:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:58:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:58:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:58:55,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:58:55,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954407351] [2022-12-11 23:58:55,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954407351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:58:55,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:58:55,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:58:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963171021] [2022-12-11 23:58:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:58:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:58:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:58:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:58:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:58:55,490 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:58:55,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1039 places, 2076 transitions, 124532 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:58:55,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:58:55,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:58:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:01,065 INFO L130 PetriNetUnfolder]: 5111/9576 cut-off events. [2022-12-11 23:59:01,065 INFO L131 PetriNetUnfolder]: For 294935/300071 co-relation queries the response was YES. [2022-12-11 23:59:01,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270973 conditions, 9576 events. 5111/9576 cut-off events. For 294935/300071 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 79222 event pairs, 209 based on Foata normal form. 17/9038 useless extension candidates. Maximal degree in co-relation 246493. Up to 5687 conditions per place. [2022-12-11 23:59:01,182 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1779 selfloop transitions, 244 changer transitions 0/2108 dead transitions. [2022-12-11 23:59:01,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1066 places, 2108 transitions, 130526 flow [2022-12-11 23:59:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:59:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:59:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2464 transitions. [2022-12-11 23:59:01,184 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2022-12-11 23:59:01,184 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 925 predicate places. [2022-12-11 23:59:01,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 1066 places, 2108 transitions, 130526 flow [2022-12-11 23:59:01,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1066 places, 2108 transitions, 130526 flow [2022-12-11 23:59:01,356 INFO L495 AbstractCegarLoop]: Abstraction has has 1066 places, 2108 transitions, 130526 flow [2022-12-11 23:59:01,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:59:01,356 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:01,357 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:01,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-11 23:59:01,357 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:01,357 INFO L85 PathProgramCache]: Analyzing trace with hash -474962039, now seen corresponding path program 11 times [2022-12-11 23:59:01,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:01,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594632596] [2022-12-11 23:59:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:01,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594632596] [2022-12-11 23:59:01,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594632596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:01,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:01,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:59:01,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295028727] [2022-12-11 23:59:01,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:01,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:59:01,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:01,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:59:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:59:01,730 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:59:01,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1066 places, 2108 transitions, 130526 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:01,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:01,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:59:01,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:06,653 INFO L130 PetriNetUnfolder]: 5130/9724 cut-off events. [2022-12-11 23:59:06,653 INFO L131 PetriNetUnfolder]: For 348142/352978 co-relation queries the response was YES. [2022-12-11 23:59:06,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281044 conditions, 9724 events. 5130/9724 cut-off events. For 348142/352978 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 81416 event pairs, 128 based on Foata normal form. 27/9201 useless extension candidates. Maximal degree in co-relation 255341. Up to 5687 conditions per place. [2022-12-11 23:59:06,800 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1873 selfloop transitions, 151 changer transitions 15/2129 dead transitions. [2022-12-11 23:59:06,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1092 places, 2129 transitions, 135940 flow [2022-12-11 23:59:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 23:59:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 23:59:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2576 transitions. [2022-12-11 23:59:06,802 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6000465874679711 [2022-12-11 23:59:06,802 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 951 predicate places. [2022-12-11 23:59:06,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 1092 places, 2129 transitions, 135940 flow [2022-12-11 23:59:07,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1090 places, 2114 transitions, 134960 flow [2022-12-11 23:59:07,027 INFO L495 AbstractCegarLoop]: Abstraction has has 1090 places, 2114 transitions, 134960 flow [2022-12-11 23:59:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:07,027 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:07,028 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:07,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-11 23:59:07,028 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash 867595083, now seen corresponding path program 12 times [2022-12-11 23:59:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:07,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024200753] [2022-12-11 23:59:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:07,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:07,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024200753] [2022-12-11 23:59:07,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024200753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:07,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:07,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:59:07,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187330178] [2022-12-11 23:59:07,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:07,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:59:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:59:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:59:07,599 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:59:07,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1090 places, 2114 transitions, 134960 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:59:07,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:07,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:59:07,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:12,623 INFO L130 PetriNetUnfolder]: 5172/9678 cut-off events. [2022-12-11 23:59:12,624 INFO L131 PetriNetUnfolder]: For 332671/338776 co-relation queries the response was YES. [2022-12-11 23:59:12,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291531 conditions, 9678 events. 5172/9678 cut-off events. For 332671/338776 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 79900 event pairs, 217 based on Foata normal form. 22/9143 useless extension candidates. Maximal degree in co-relation 265321. Up to 5687 conditions per place. [2022-12-11 23:59:12,746 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1821 selfloop transitions, 234 changer transitions 0/2140 dead transitions. [2022-12-11 23:59:12,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1117 places, 2140 transitions, 140774 flow [2022-12-11 23:59:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:59:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:59:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2466 transitions. [2022-12-11 23:59:12,747 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5539083557951483 [2022-12-11 23:59:12,748 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 976 predicate places. [2022-12-11 23:59:12,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 1117 places, 2140 transitions, 140774 flow [2022-12-11 23:59:12,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1117 places, 2140 transitions, 140774 flow [2022-12-11 23:59:12,887 INFO L495 AbstractCegarLoop]: Abstraction has has 1117 places, 2140 transitions, 140774 flow [2022-12-11 23:59:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:59:12,887 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:12,887 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:12,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-11 23:59:12,888 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -139621141, now seen corresponding path program 13 times [2022-12-11 23:59:12,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:12,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11364749] [2022-12-11 23:59:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11364749] [2022-12-11 23:59:13,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11364749] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:13,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:13,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:59:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359228907] [2022-12-11 23:59:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:13,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:59:13,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:59:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:59:13,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:59:13,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1117 places, 2140 transitions, 140774 flow. Second operand has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 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) [2022-12-11 23:59:13,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:13,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:59:13,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:18,584 INFO L130 PetriNetUnfolder]: 5172/9750 cut-off events. [2022-12-11 23:59:18,584 INFO L131 PetriNetUnfolder]: For 370407/376412 co-relation queries the response was YES. [2022-12-11 23:59:18,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300632 conditions, 9750 events. 5172/9750 cut-off events. For 370407/376412 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 81105 event pairs, 213 based on Foata normal form. 34/9227 useless extension candidates. Maximal degree in co-relation 273521. Up to 5687 conditions per place. [2022-12-11 23:59:18,717 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1852 selfloop transitions, 197 changer transitions 14/2148 dead transitions. [2022-12-11 23:59:18,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1142 places, 2148 transitions, 145446 flow [2022-12-11 23:59:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:59:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:59:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2275 transitions. [2022-12-11 23:59:18,718 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.550314465408805 [2022-12-11 23:59:18,719 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1001 predicate places. [2022-12-11 23:59:18,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 1142 places, 2148 transitions, 145446 flow [2022-12-11 23:59:18,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1140 places, 2134 transitions, 144488 flow [2022-12-11 23:59:18,864 INFO L495 AbstractCegarLoop]: Abstraction has has 1140 places, 2134 transitions, 144488 flow [2022-12-11 23:59:18,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 83.8) internal successors, (1676), 20 states have internal predecessors, (1676), 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) [2022-12-11 23:59:18,865 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:18,865 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-11 23:59:18,865 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -994602765, now seen corresponding path program 14 times [2022-12-11 23:59:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:18,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394601015] [2022-12-11 23:59:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:19,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394601015] [2022-12-11 23:59:19,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394601015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:19,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:19,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-11 23:59:19,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73383278] [2022-12-11 23:59:19,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:59:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:59:19,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:59:19,571 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:59:19,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1140 places, 2134 transitions, 144488 flow. Second operand has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:59:19,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:19,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:59:19,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:24,842 INFO L130 PetriNetUnfolder]: 5286/9923 cut-off events. [2022-12-11 23:59:24,843 INFO L131 PetriNetUnfolder]: For 384269/390498 co-relation queries the response was YES. [2022-12-11 23:59:24,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315768 conditions, 9923 events. 5286/9923 cut-off events. For 384269/390498 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 82717 event pairs, 211 based on Foata normal form. 18/9382 useless extension candidates. Maximal degree in co-relation 288071. Up to 5687 conditions per place. [2022-12-11 23:59:24,979 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1843 selfloop transitions, 263 changer transitions 0/2191 dead transitions. [2022-12-11 23:59:24,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1171 places, 2191 transitions, 152698 flow [2022-12-11 23:59:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 23:59:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 23:59:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2823 transitions. [2022-12-11 23:59:24,981 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5548349056603774 [2022-12-11 23:59:24,981 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1030 predicate places. [2022-12-11 23:59:24,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 1171 places, 2191 transitions, 152698 flow [2022-12-11 23:59:25,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1171 places, 2191 transitions, 152698 flow [2022-12-11 23:59:25,139 INFO L495 AbstractCegarLoop]: Abstraction has has 1171 places, 2191 transitions, 152698 flow [2022-12-11 23:59:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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) [2022-12-11 23:59:25,139 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:25,139 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-11 23:59:25,139 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1360832349, now seen corresponding path program 15 times [2022-12-11 23:59:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370119892] [2022-12-11 23:59:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370119892] [2022-12-11 23:59:25,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370119892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:25,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:25,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:59:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345933227] [2022-12-11 23:59:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:59:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:59:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:59:25,855 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:59:25,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1171 places, 2191 transitions, 152698 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:59:25,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:25,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:59:25,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:31,929 INFO L130 PetriNetUnfolder]: 5287/9979 cut-off events. [2022-12-11 23:59:31,929 INFO L131 PetriNetUnfolder]: For 422887/427751 co-relation queries the response was YES. [2022-12-11 23:59:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324961 conditions, 9979 events. 5287/9979 cut-off events. For 422887/427751 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 83604 event pairs, 126 based on Foata normal form. 20/9445 useless extension candidates. Maximal degree in co-relation 296432. Up to 5687 conditions per place. [2022-12-11 23:59:32,153 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1906 selfloop transitions, 191 changer transitions 15/2197 dead transitions. [2022-12-11 23:59:32,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1198 places, 2197 transitions, 157347 flow [2022-12-11 23:59:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 23:59:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 23:59:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2441 transitions. [2022-12-11 23:59:32,155 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.548292902066487 [2022-12-11 23:59:32,155 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1057 predicate places. [2022-12-11 23:59:32,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 1198 places, 2197 transitions, 157347 flow [2022-12-11 23:59:32,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1193 places, 2182 transitions, 156247 flow [2022-12-11 23:59:32,310 INFO L495 AbstractCegarLoop]: Abstraction has has 1193 places, 2182 transitions, 156247 flow [2022-12-11 23:59:32,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:59:32,310 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:32,310 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:32,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-11 23:59:32,310 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash 985129665, now seen corresponding path program 16 times [2022-12-11 23:59:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:32,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740821263] [2022-12-11 23:59:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:32,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:32,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740821263] [2022-12-11 23:59:32,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740821263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:32,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:32,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-11 23:59:32,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21063937] [2022-12-11 23:59:32,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:32,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-11 23:59:32,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:32,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-11 23:59:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-12-11 23:59:32,828 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 159 [2022-12-11 23:59:32,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1193 places, 2182 transitions, 156247 flow. Second operand has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:59:32,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:32,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 159 [2022-12-11 23:59:32,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:38,440 INFO L130 PetriNetUnfolder]: 5233/9879 cut-off events. [2022-12-11 23:59:38,440 INFO L131 PetriNetUnfolder]: For 444683/449917 co-relation queries the response was YES. [2022-12-11 23:59:38,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330057 conditions, 9879 events. 5233/9879 cut-off events. For 444683/449917 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 82458 event pairs, 128 based on Foata normal form. 28/9355 useless extension candidates. Maximal degree in co-relation 301949. Up to 5687 conditions per place. [2022-12-11 23:59:38,577 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1876 selfloop transitions, 188 changer transitions 14/2163 dead transitions. [2022-12-11 23:59:38,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1218 places, 2163 transitions, 159006 flow [2022-12-11 23:59:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:59:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:59:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2273 transitions. [2022-12-11 23:59:38,579 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5498306724721819 [2022-12-11 23:59:38,580 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1077 predicate places. [2022-12-11 23:59:38,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 1218 places, 2163 transitions, 159006 flow [2022-12-11 23:59:38,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1208 places, 2149 transitions, 157964 flow [2022-12-11 23:59:38,737 INFO L495 AbstractCegarLoop]: Abstraction has has 1208 places, 2149 transitions, 157964 flow [2022-12-11 23:59:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 83.66666666666667) internal successors, (1757), 21 states have internal predecessors, (1757), 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) [2022-12-11 23:59:38,737 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:38,737 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:38,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-11 23:59:38,737 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash 897870091, now seen corresponding path program 20 times [2022-12-11 23:59:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:38,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064994619] [2022-12-11 23:59:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:39,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064994619] [2022-12-11 23:59:39,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064994619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:39,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:39,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:59:39,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896951063] [2022-12-11 23:59:39,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:39,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:59:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:39,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:59:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:59:39,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:59:39,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1208 places, 2149 transitions, 157964 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:39,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:39,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:59:39,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:44,860 INFO L130 PetriNetUnfolder]: 5283/9916 cut-off events. [2022-12-11 23:59:44,860 INFO L131 PetriNetUnfolder]: For 446410/453473 co-relation queries the response was YES. [2022-12-11 23:59:44,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341509 conditions, 9916 events. 5283/9916 cut-off events. For 446410/453473 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 82499 event pairs, 213 based on Foata normal form. 26/9379 useless extension candidates. Maximal degree in co-relation 312868. Up to 5687 conditions per place. [2022-12-11 23:59:45,122 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1900 selfloop transitions, 199 changer transitions 11/2200 dead transitions. [2022-12-11 23:59:45,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1236 places, 2200 transitions, 165888 flow [2022-12-11 23:59:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 23:59:45,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 23:59:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2761 transitions. [2022-12-11 23:59:45,124 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5987855129039253 [2022-12-11 23:59:45,125 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1095 predicate places. [2022-12-11 23:59:45,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 1236 places, 2200 transitions, 165888 flow [2022-12-11 23:59:45,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1234 places, 2189 transitions, 165058 flow [2022-12-11 23:59:45,313 INFO L495 AbstractCegarLoop]: Abstraction has has 1234 places, 2189 transitions, 165058 flow [2022-12-11 23:59:45,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:45,313 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:45,313 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-11 23:59:45,314 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 170938799, now seen corresponding path program 21 times [2022-12-11 23:59:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:45,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512344610] [2022-12-11 23:59:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512344610] [2022-12-11 23:59:45,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512344610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:45,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:45,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:59:45,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330695655] [2022-12-11 23:59:45,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:45,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:59:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:59:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:59:45,831 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:59:45,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1234 places, 2189 transitions, 165058 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:45,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:45,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:59:45,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:51,485 INFO L130 PetriNetUnfolder]: 5265/9926 cut-off events. [2022-12-11 23:59:51,485 INFO L131 PetriNetUnfolder]: For 484677/490718 co-relation queries the response was YES. [2022-12-11 23:59:51,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349186 conditions, 9926 events. 5265/9926 cut-off events. For 484677/490718 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 83055 event pairs, 128 based on Foata normal form. 24/9393 useless extension candidates. Maximal degree in co-relation 319831. Up to 5687 conditions per place. [2022-12-11 23:59:51,628 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1891 selfloop transitions, 200 changer transitions 5/2186 dead transitions. [2022-12-11 23:59:51,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1259 places, 2186 transitions, 169028 flow [2022-12-11 23:59:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:59:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:59:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2487 transitions. [2022-12-11 23:59:51,630 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6015965166908563 [2022-12-11 23:59:51,630 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1118 predicate places. [2022-12-11 23:59:51,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 1259 places, 2186 transitions, 169028 flow [2022-12-11 23:59:51,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1259 places, 2181 transitions, 168648 flow [2022-12-11 23:59:51,848 INFO L495 AbstractCegarLoop]: Abstraction has has 1259 places, 2181 transitions, 168648 flow [2022-12-11 23:59:51,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:51,849 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:51,849 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:51,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-11 23:59:51,849 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash 489002663, now seen corresponding path program 22 times [2022-12-11 23:59:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:51,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385884487] [2022-12-11 23:59:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385884487] [2022-12-11 23:59:52,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385884487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:52,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:52,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-11 23:59:52,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262123423] [2022-12-11 23:59:52,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:52,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-11 23:59:52,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-11 23:59:52,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-11 23:59:52,266 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:59:52,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1259 places, 2181 transitions, 168648 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:59:52,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:52,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:59:52,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:59:58,359 INFO L130 PetriNetUnfolder]: 5343/9991 cut-off events. [2022-12-11 23:59:58,359 INFO L131 PetriNetUnfolder]: For 489787/497861 co-relation queries the response was YES. [2022-12-11 23:59:58,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362982 conditions, 9991 events. 5343/9991 cut-off events. For 489787/497861 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 83272 event pairs, 209 based on Foata normal form. 24/9452 useless extension candidates. Maximal degree in co-relation 332278. Up to 5831 conditions per place. [2022-12-11 23:59:58,513 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 1871 selfloop transitions, 252 changer transitions 0/2213 dead transitions. [2022-12-11 23:59:58,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1282 places, 2213 transitions, 175530 flow [2022-12-11 23:59:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:59:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:59:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2509 transitions. [2022-12-11 23:59:58,517 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2022-12-11 23:59:58,517 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1141 predicate places. [2022-12-11 23:59:58,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 1282 places, 2213 transitions, 175530 flow [2022-12-11 23:59:58,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1282 places, 2213 transitions, 175530 flow [2022-12-11 23:59:58,787 INFO L495 AbstractCegarLoop]: Abstraction has has 1282 places, 2213 transitions, 175530 flow [2022-12-11 23:59:58,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-11 23:59:58,787 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:59:58,787 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:59:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-11 23:59:58,788 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:59:58,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:59:58,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1673455415, now seen corresponding path program 23 times [2022-12-11 23:59:58,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:59:58,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664472761] [2022-12-11 23:59:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:59:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:59:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:59:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 23:59:59,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:59:59,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664472761] [2022-12-11 23:59:59,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664472761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:59:59,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:59:59,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-11 23:59:59,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023943381] [2022-12-11 23:59:59,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:59:59,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-11 23:59:59,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:59:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-11 23:59:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-11 23:59:59,198 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-11 23:59:59,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1282 places, 2213 transitions, 175530 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-11 23:59:59,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:59:59,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-11 23:59:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:05,779 INFO L130 PetriNetUnfolder]: 5344/10085 cut-off events. [2022-12-12 00:00:05,779 INFO L131 PetriNetUnfolder]: For 550887/557784 co-relation queries the response was YES. [2022-12-12 00:00:05,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372246 conditions, 10085 events. 5344/10085 cut-off events. For 550887/557784 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 84802 event pairs, 128 based on Foata normal form. 24/9551 useless extension candidates. Maximal degree in co-relation 340805. Up to 5831 conditions per place. [2022-12-12 00:00:05,958 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1943 selfloop transitions, 173 changer transitions 11/2217 dead transitions. [2022-12-12 00:00:05,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1309 places, 2217 transitions, 180096 flow [2022-12-12 00:00:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 00:00:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 00:00:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2662 transitions. [2022-12-12 00:00:05,960 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5979335130278527 [2022-12-12 00:00:05,961 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1168 predicate places. [2022-12-12 00:00:05,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 1309 places, 2217 transitions, 180096 flow [2022-12-12 00:00:06,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1301 places, 2206 transitions, 179200 flow [2022-12-12 00:00:06,376 INFO L495 AbstractCegarLoop]: Abstraction has has 1301 places, 2206 transitions, 179200 flow [2022-12-12 00:00:06,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:06,376 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:06,376 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-12 00:00:06,376 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash -122093965, now seen corresponding path program 17 times [2022-12-12 00:00:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:06,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914665886] [2022-12-12 00:00:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914665886] [2022-12-12 00:00:06,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914665886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:00:06,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:00:06,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:00:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981479128] [2022-12-12 00:00:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:00:06,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:00:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:00:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:00:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:00:06,842 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:00:06,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1301 places, 2206 transitions, 179200 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:00:06,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:00:06,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:00:06,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:15,119 INFO L130 PetriNetUnfolder]: 5655/10572 cut-off events. [2022-12-12 00:00:15,119 INFO L131 PetriNetUnfolder]: For 572426/580445 co-relation queries the response was YES. [2022-12-12 00:00:15,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401917 conditions, 10572 events. 5655/10572 cut-off events. For 572426/580445 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 89047 event pairs, 130 based on Foata normal form. 14/9974 useless extension candidates. Maximal degree in co-relation 369764. Up to 5831 conditions per place. [2022-12-12 00:00:15,425 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1922 selfloop transitions, 308 changer transitions 0/2320 dead transitions. [2022-12-12 00:00:15,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1332 places, 2320 transitions, 193148 flow [2022-12-12 00:00:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 00:00:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 00:00:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3087 transitions. [2022-12-12 00:00:15,427 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6067216981132075 [2022-12-12 00:00:15,428 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1191 predicate places. [2022-12-12 00:00:15,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 1332 places, 2320 transitions, 193148 flow [2022-12-12 00:00:15,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1332 places, 2320 transitions, 193148 flow [2022-12-12 00:00:15,642 INFO L495 AbstractCegarLoop]: Abstraction has has 1332 places, 2320 transitions, 193148 flow [2022-12-12 00:00:15,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:00:15,643 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:15,643 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:15,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-12 00:00:15,643 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -432723359, now seen corresponding path program 18 times [2022-12-12 00:00:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856533797] [2022-12-12 00:00:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:16,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:16,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856533797] [2022-12-12 00:00:16,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856533797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:00:16,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:00:16,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:00:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410129250] [2022-12-12 00:00:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:00:16,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:00:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:00:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:00:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:00:16,282 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:00:16,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1332 places, 2320 transitions, 193148 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:16,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:00:16,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:00:16,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:24,158 INFO L130 PetriNetUnfolder]: 5655/10623 cut-off events. [2022-12-12 00:00:24,159 INFO L131 PetriNetUnfolder]: For 614923/622136 co-relation queries the response was YES. [2022-12-12 00:00:24,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411619 conditions, 10623 events. 5655/10623 cut-off events. For 614923/622136 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 89871 event pairs, 128 based on Foata normal form. 20/10031 useless extension candidates. Maximal degree in co-relation 378645. Up to 5831 conditions per place. [2022-12-12 00:00:24,355 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 2036 selfloop transitions, 191 changer transitions 7/2324 dead transitions. [2022-12-12 00:00:24,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1355 places, 2324 transitions, 197961 flow [2022-12-12 00:00:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-12 00:00:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-12 00:00:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2301 transitions. [2022-12-12 00:00:24,357 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6029874213836478 [2022-12-12 00:00:24,358 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1214 predicate places. [2022-12-12 00:00:24,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 1355 places, 2324 transitions, 197961 flow [2022-12-12 00:00:24,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1352 places, 2317 transitions, 197356 flow [2022-12-12 00:00:24,580 INFO L495 AbstractCegarLoop]: Abstraction has has 1352 places, 2317 transitions, 197356 flow [2022-12-12 00:00:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:24,580 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:24,580 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-12 00:00:24,580 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 753910213, now seen corresponding path program 19 times [2022-12-12 00:00:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:24,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022622454] [2022-12-12 00:00:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:25,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022622454] [2022-12-12 00:00:25,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022622454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:00:25,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:00:25,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:00:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350084253] [2022-12-12 00:00:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:00:25,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:00:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:00:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:00:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:00:25,220 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:00:25,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1352 places, 2317 transitions, 197356 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:00:25,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:00:25,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:00:25,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:32,567 INFO L130 PetriNetUnfolder]: 5514/10318 cut-off events. [2022-12-12 00:00:32,567 INFO L131 PetriNetUnfolder]: For 598282/607285 co-relation queries the response was YES. [2022-12-12 00:00:32,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411267 conditions, 10318 events. 5514/10318 cut-off events. For 598282/607285 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 86464 event pairs, 213 based on Foata normal form. 14/9757 useless extension candidates. Maximal degree in co-relation 377685. Up to 5831 conditions per place. [2022-12-12 00:00:32,739 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 1905 selfloop transitions, 295 changer transitions 0/2290 dead transitions. [2022-12-12 00:00:32,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1378 places, 2290 transitions, 199448 flow [2022-12-12 00:00:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-12 00:00:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-12 00:00:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2592 transitions. [2022-12-12 00:00:32,741 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2022-12-12 00:00:32,741 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1237 predicate places. [2022-12-12 00:00:32,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 1378 places, 2290 transitions, 199448 flow [2022-12-12 00:00:32,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1378 places, 2290 transitions, 199448 flow [2022-12-12 00:00:32,942 INFO L495 AbstractCegarLoop]: Abstraction has has 1378 places, 2290 transitions, 199448 flow [2022-12-12 00:00:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:00:32,942 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:32,942 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-12 00:00:32,943 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1015318767, now seen corresponding path program 24 times [2022-12-12 00:00:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163307900] [2022-12-12 00:00:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163307900] [2022-12-12 00:00:33,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163307900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:00:33,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:00:33,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:00:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816075509] [2022-12-12 00:00:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:00:33,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:00:33,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:00:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:00:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:00:33,422 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:00:33,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1378 places, 2290 transitions, 199448 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:33,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:00:33,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:00:33,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:40,895 INFO L130 PetriNetUnfolder]: 5526/10381 cut-off events. [2022-12-12 00:00:40,895 INFO L131 PetriNetUnfolder]: For 634567/643166 co-relation queries the response was YES. [2022-12-12 00:00:40,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421388 conditions, 10381 events. 5526/10381 cut-off events. For 634567/643166 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 87598 event pairs, 209 based on Foata normal form. 16/9822 useless extension candidates. Maximal degree in co-relation 387075. Up to 5833 conditions per place. [2022-12-12 00:00:41,071 INFO L137 encePairwiseOnDemand]: 128/159 looper letters, 1976 selfloop transitions, 232 changer transitions 0/2298 dead transitions. [2022-12-12 00:00:41,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1405 places, 2298 transitions, 204568 flow [2022-12-12 00:00:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 00:00:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 00:00:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2675 transitions. [2022-12-12 00:00:41,073 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6008535489667565 [2022-12-12 00:00:41,073 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1264 predicate places. [2022-12-12 00:00:41,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 1405 places, 2298 transitions, 204568 flow [2022-12-12 00:00:41,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1405 places, 2298 transitions, 204568 flow [2022-12-12 00:00:41,311 INFO L495 AbstractCegarLoop]: Abstraction has has 1405 places, 2298 transitions, 204568 flow [2022-12-12 00:00:41,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:41,311 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:41,311 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-12 00:00:41,311 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1096129173, now seen corresponding path program 25 times [2022-12-12 00:00:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761198317] [2022-12-12 00:00:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:41,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:41,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761198317] [2022-12-12 00:00:41,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761198317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:00:41,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:00:41,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:00:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961223861] [2022-12-12 00:00:41,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:00:41,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:00:41,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:00:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:00:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:00:41,775 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:00:41,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1405 places, 2298 transitions, 204568 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:00:41,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:00:41,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:00:41,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:49,888 INFO L130 PetriNetUnfolder]: 5704/10685 cut-off events. [2022-12-12 00:00:49,889 INFO L131 PetriNetUnfolder]: For 684384/695065 co-relation queries the response was YES. [2022-12-12 00:00:49,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444008 conditions, 10685 events. 5704/10685 cut-off events. For 684384/695065 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 90321 event pairs, 235 based on Foata normal form. 16/10106 useless extension candidates. Maximal degree in co-relation 407849. Up to 6050 conditions per place. [2022-12-12 00:00:50,082 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2017 selfloop transitions, 270 changer transitions 0/2377 dead transitions. [2022-12-12 00:00:50,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1431 places, 2377 transitions, 216314 flow [2022-12-12 00:00:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-12 00:00:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-12 00:00:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2603 transitions. [2022-12-12 00:00:50,084 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6063358956440718 [2022-12-12 00:00:50,085 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1290 predicate places. [2022-12-12 00:00:50,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 1431 places, 2377 transitions, 216314 flow [2022-12-12 00:00:50,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1431 places, 2377 transitions, 216314 flow [2022-12-12 00:00:50,346 INFO L495 AbstractCegarLoop]: Abstraction has has 1431 places, 2377 transitions, 216314 flow [2022-12-12 00:00:50,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:00:50,346 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:50,346 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:50,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-12 00:00:50,346 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1641754739, now seen corresponding path program 26 times [2022-12-12 00:00:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:50,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382211167] [2022-12-12 00:00:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:50,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382211167] [2022-12-12 00:00:50,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382211167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:00:50,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:00:50,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:00:50,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723227590] [2022-12-12 00:00:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:00:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:00:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:00:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:00:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:00:50,775 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:00:50,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1431 places, 2377 transitions, 216314 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:50,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:00:50,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:00:50,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:00:58,751 INFO L130 PetriNetUnfolder]: 5645/10623 cut-off events. [2022-12-12 00:00:58,752 INFO L131 PetriNetUnfolder]: For 711755/722008 co-relation queries the response was YES. [2022-12-12 00:00:58,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449251 conditions, 10623 events. 5645/10623 cut-off events. For 711755/722008 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 89999 event pairs, 206 based on Foata normal form. 18/10055 useless extension candidates. Maximal degree in co-relation 412723. Up to 5977 conditions per place. [2022-12-12 00:00:59,017 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2081 selfloop transitions, 191 changer transitions 5/2367 dead transitions. [2022-12-12 00:00:59,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1455 places, 2367 transitions, 219952 flow [2022-12-12 00:00:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 00:00:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 00:00:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2389 transitions. [2022-12-12 00:00:59,018 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6010062893081761 [2022-12-12 00:00:59,027 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1314 predicate places. [2022-12-12 00:00:59,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 1455 places, 2367 transitions, 219952 flow [2022-12-12 00:00:59,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1455 places, 2362 transitions, 219492 flow [2022-12-12 00:00:59,289 INFO L495 AbstractCegarLoop]: Abstraction has has 1455 places, 2362 transitions, 219492 flow [2022-12-12 00:00:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:00:59,289 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:00:59,289 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:00:59,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-12 00:00:59,297 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:00:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:00:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash 313119249, now seen corresponding path program 27 times [2022-12-12 00:00:59,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:00:59,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806765969] [2022-12-12 00:00:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:00:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:00:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:00:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:00:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:00:59,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806765969] [2022-12-12 00:00:59,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806765969] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:00:59,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095705953] [2022-12-12 00:00:59,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:00:59,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:00:59,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:00:59,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:00:59,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 00:00:59,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 00:00:59,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:00:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-12 00:00:59,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:01:00,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 00:01:00,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 00:01:00,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 00:01:00,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 00:01:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:01:00,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:01:01,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:01:01,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2022-12-12 00:01:01,194 INFO L321 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-12-12 00:01:01,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 828 treesize of output 752 [2022-12-12 00:01:01,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 00:01:01,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 00:01:01,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:01:01,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 700 treesize of output 652 [2022-12-12 00:01:01,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 00:01:01,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 00:01:01,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:01:01,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 604 treesize of output 460 [2022-12-12 00:01:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:01:02,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095705953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:01:02,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:01:02,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 15] total 47 [2022-12-12 00:01:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461248497] [2022-12-12 00:01:02,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:01:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 00:01:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:01:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 00:01:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=1699, Unknown=40, NotChecked=0, Total=2162 [2022-12-12 00:01:02,212 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 159 [2022-12-12 00:01:02,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1455 places, 2362 transitions, 219492 flow. Second operand has 47 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 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) [2022-12-12 00:01:02,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:01:02,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 159 [2022-12-12 00:01:02,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:01:11,943 INFO L130 PetriNetUnfolder]: 5685/10667 cut-off events. [2022-12-12 00:01:11,943 INFO L131 PetriNetUnfolder]: For 752801/763827 co-relation queries the response was YES. [2022-12-12 00:01:11,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461647 conditions, 10667 events. 5685/10667 cut-off events. For 752801/763827 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 90176 event pairs, 209 based on Foata normal form. 102/10180 useless extension candidates. Maximal degree in co-relation 423978. Up to 6048 conditions per place. [2022-12-12 00:01:12,171 INFO L137 encePairwiseOnDemand]: 121/159 looper letters, 1805 selfloop transitions, 522 changer transitions 0/2398 dead transitions. [2022-12-12 00:01:12,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1498 places, 2398 transitions, 227646 flow [2022-12-12 00:01:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 00:01:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 00:01:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3489 transitions. [2022-12-12 00:01:12,173 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49871355060034306 [2022-12-12 00:01:12,174 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1357 predicate places. [2022-12-12 00:01:12,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 1498 places, 2398 transitions, 227646 flow [2022-12-12 00:01:12,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1498 places, 2398 transitions, 227646 flow [2022-12-12 00:01:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 1498 places, 2398 transitions, 227646 flow [2022-12-12 00:01:12,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 75.38297872340425) internal successors, (3543), 47 states have internal predecessors, (3543), 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) [2022-12-12 00:01:12,477 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:01:12,477 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:01:12,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 00:01:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:01:12,682 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:01:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:01:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2139069577, now seen corresponding path program 28 times [2022-12-12 00:01:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:01:12,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304930314] [2022-12-12 00:01:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:01:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:01:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:01:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:01:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:01:13,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304930314] [2022-12-12 00:01:13,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304930314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:01:13,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:01:13,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:01:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345612785] [2022-12-12 00:01:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:01:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:01:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:01:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:01:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:01:13,171 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:01:13,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1498 places, 2398 transitions, 227646 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:01:13,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:01:13,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:01:13,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:01:21,729 INFO L130 PetriNetUnfolder]: 5678/10700 cut-off events. [2022-12-12 00:01:21,730 INFO L131 PetriNetUnfolder]: For 804205/812594 co-relation queries the response was YES. [2022-12-12 00:01:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470910 conditions, 10700 events. 5678/10700 cut-off events. For 804205/812594 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 90949 event pairs, 132 based on Foata normal form. 22/10148 useless extension candidates. Maximal degree in co-relation 432485. Up to 6048 conditions per place. [2022-12-12 00:01:22,057 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2068 selfloop transitions, 240 changer transitions 0/2398 dead transitions. [2022-12-12 00:01:22,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1523 places, 2398 transitions, 232262 flow [2022-12-12 00:01:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-12 00:01:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-12 00:01:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2495 transitions. [2022-12-12 00:01:22,059 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6035316884373488 [2022-12-12 00:01:22,060 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1382 predicate places. [2022-12-12 00:01:22,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 1523 places, 2398 transitions, 232262 flow [2022-12-12 00:01:22,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1523 places, 2398 transitions, 232262 flow [2022-12-12 00:01:22,376 INFO L495 AbstractCegarLoop]: Abstraction has has 1523 places, 2398 transitions, 232262 flow [2022-12-12 00:01:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:01:22,377 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:01:22,377 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:01:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-12 00:01:22,377 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:01:22,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:01:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -278315659, now seen corresponding path program 29 times [2022-12-12 00:01:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:01:22,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391242474] [2022-12-12 00:01:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:01:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:01:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:01:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:01:22,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:01:22,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391242474] [2022-12-12 00:01:22,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391242474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:01:22,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:01:22,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:01:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908164440] [2022-12-12 00:01:22,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:01:22,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:01:22,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:01:22,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:01:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:01:22,916 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:01:22,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1523 places, 2398 transitions, 232262 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:01:22,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:01:22,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:01:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:01:32,027 INFO L130 PetriNetUnfolder]: 5630/10630 cut-off events. [2022-12-12 00:01:32,027 INFO L131 PetriNetUnfolder]: For 811362/820659 co-relation queries the response was YES. [2022-12-12 00:01:32,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476396 conditions, 10630 events. 5630/10630 cut-off events. For 811362/820659 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 90476 event pairs, 182 based on Foata normal form. 18/10068 useless extension candidates. Maximal degree in co-relation 437225. Up to 6042 conditions per place. [2022-12-12 00:01:32,237 INFO L137 encePairwiseOnDemand]: 127/159 looper letters, 2097 selfloop transitions, 179 changer transitions 5/2371 dead transitions. [2022-12-12 00:01:32,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1534 places, 2371 transitions, 234184 flow [2022-12-12 00:01:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-12 00:01:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-12 00:01:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2476 transitions. [2022-12-12 00:01:32,239 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5989356555394292 [2022-12-12 00:01:32,239 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1393 predicate places. [2022-12-12 00:01:32,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 1534 places, 2371 transitions, 234184 flow [2022-12-12 00:01:32,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1519 places, 2366 transitions, 233694 flow [2022-12-12 00:01:32,559 INFO L495 AbstractCegarLoop]: Abstraction has has 1519 places, 2366 transitions, 233694 flow [2022-12-12 00:01:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:01:32,560 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:01:32,560 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:01:32,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-12 00:01:32,560 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:01:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:01:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash 894595919, now seen corresponding path program 30 times [2022-12-12 00:01:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:01:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018234699] [2022-12-12 00:01:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:01:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:01:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:01:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:01:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:01:33,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018234699] [2022-12-12 00:01:33,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018234699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:01:33,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:01:33,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:01:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271765917] [2022-12-12 00:01:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:01:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:01:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:01:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:01:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:01:33,002 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:01:33,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1519 places, 2366 transitions, 233694 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:01:33,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:01:33,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:01:33,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:01:41,815 INFO L130 PetriNetUnfolder]: 5537/10327 cut-off events. [2022-12-12 00:01:41,816 INFO L131 PetriNetUnfolder]: For 782322/793430 co-relation queries the response was YES. [2022-12-12 00:01:41,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477288 conditions, 10327 events. 5537/10327 cut-off events. For 782322/793430 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 86597 event pairs, 209 based on Foata normal form. 23/9811 useless extension candidates. Maximal degree in co-relation 438481. Up to 5888 conditions per place. [2022-12-12 00:01:42,023 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 2054 selfloop transitions, 247 changer transitions 0/2391 dead transitions. [2022-12-12 00:01:42,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1545 places, 2391 transitions, 240872 flow [2022-12-12 00:01:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-12 00:01:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-12 00:01:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2593 transitions. [2022-12-12 00:01:42,025 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.604006522245516 [2022-12-12 00:01:42,026 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1404 predicate places. [2022-12-12 00:01:42,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 1545 places, 2391 transitions, 240872 flow [2022-12-12 00:01:42,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1545 places, 2391 transitions, 240872 flow [2022-12-12 00:01:42,325 INFO L495 AbstractCegarLoop]: Abstraction has has 1545 places, 2391 transitions, 240872 flow [2022-12-12 00:01:42,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:01:42,325 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:01:42,325 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:01:42,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-12 00:01:42,325 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:01:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:01:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2135389777, now seen corresponding path program 20 times [2022-12-12 00:01:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:01:42,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138252089] [2022-12-12 00:01:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:01:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:01:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:01:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:01:42,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:01:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138252089] [2022-12-12 00:01:42,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138252089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:01:42,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:01:42,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:01:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61974109] [2022-12-12 00:01:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:01:42,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:01:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:01:42,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:01:42,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:01:42,778 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:01:42,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1545 places, 2391 transitions, 240872 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:01:42,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:01:42,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:01:42,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:01:51,683 INFO L130 PetriNetUnfolder]: 5582/10413 cut-off events. [2022-12-12 00:01:51,683 INFO L131 PetriNetUnfolder]: For 817609/828660 co-relation queries the response was YES. [2022-12-12 00:01:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490417 conditions, 10413 events. 5582/10413 cut-off events. For 817609/828660 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 87576 event pairs, 213 based on Foata normal form. 12/9882 useless extension candidates. Maximal degree in co-relation 450889. Up to 5888 conditions per place. [2022-12-12 00:01:52,015 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 2036 selfloop transitions, 286 changer transitions 0/2412 dead transitions. [2022-12-12 00:01:52,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1571 places, 2412 transitions, 247692 flow [2022-12-12 00:01:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-12 00:01:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-12 00:01:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2583 transitions. [2022-12-12 00:01:52,018 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6016771488469602 [2022-12-12 00:01:52,018 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1430 predicate places. [2022-12-12 00:01:52,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 1571 places, 2412 transitions, 247692 flow [2022-12-12 00:01:52,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1571 places, 2412 transitions, 247692 flow [2022-12-12 00:01:52,354 INFO L495 AbstractCegarLoop]: Abstraction has has 1571 places, 2412 transitions, 247692 flow [2022-12-12 00:01:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:01:52,354 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:01:52,354 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:01:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-12 00:01:52,354 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:01:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:01:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash -273700409, now seen corresponding path program 21 times [2022-12-12 00:01:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:01:52,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160768036] [2022-12-12 00:01:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:01:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:01:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:01:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:01:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:01:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160768036] [2022-12-12 00:01:52,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160768036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:01:52,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:01:52,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:01:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642567180] [2022-12-12 00:01:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:01:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:01:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:01:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:01:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:01:52,997 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:01:52,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1571 places, 2412 transitions, 247692 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:01:52,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:01:52,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:01:52,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:02:02,622 INFO L130 PetriNetUnfolder]: 5583/10460 cut-off events. [2022-12-12 00:02:02,623 INFO L131 PetriNetUnfolder]: For 895644/906537 co-relation queries the response was YES. [2022-12-12 00:02:02,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500223 conditions, 10460 events. 5583/10460 cut-off events. For 895644/906537 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 88155 event pairs, 128 based on Foata normal form. 20/9942 useless extension candidates. Maximal degree in co-relation 459851. Up to 5888 conditions per place. [2022-12-12 00:02:02,842 INFO L137 encePairwiseOnDemand]: 130/159 looper letters, 2137 selfloop transitions, 176 changer transitions 15/2418 dead transitions. [2022-12-12 00:02:02,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1595 places, 2418 transitions, 252977 flow [2022-12-12 00:02:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 00:02:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 00:02:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2375 transitions. [2022-12-12 00:02:02,844 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2022-12-12 00:02:02,845 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1454 predicate places. [2022-12-12 00:02:02,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 1595 places, 2418 transitions, 252977 flow [2022-12-12 00:02:03,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1588 places, 2403 transitions, 251367 flow [2022-12-12 00:02:03,188 INFO L495 AbstractCegarLoop]: Abstraction has has 1588 places, 2403 transitions, 251367 flow [2022-12-12 00:02:03,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:02:03,188 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:02:03,188 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:02:03,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-12 00:02:03,188 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:02:03,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:02:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1152361295, now seen corresponding path program 22 times [2022-12-12 00:02:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:02:03,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285243778] [2022-12-12 00:02:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:02:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:02:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:02:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:02:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:02:03,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285243778] [2022-12-12 00:02:03,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285243778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:02:03,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:02:03,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:02:03,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203195827] [2022-12-12 00:02:03,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:02:03,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:02:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:02:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:02:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:02:03,672 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:02:03,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1588 places, 2403 transitions, 251367 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:02:03,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:02:03,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:02:03,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:02:14,028 INFO L130 PetriNetUnfolder]: 5571/10462 cut-off events. [2022-12-12 00:02:14,029 INFO L131 PetriNetUnfolder]: For 940228/950621 co-relation queries the response was YES. [2022-12-12 00:02:14,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508342 conditions, 10462 events. 5571/10462 cut-off events. For 940228/950621 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 88367 event pairs, 124 based on Foata normal form. 20/9946 useless extension candidates. Maximal degree in co-relation 467460. Up to 5888 conditions per place. [2022-12-12 00:02:14,375 INFO L137 encePairwiseOnDemand]: 130/159 looper letters, 2138 selfloop transitions, 172 changer transitions 7/2407 dead transitions. [2022-12-12 00:02:14,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1611 places, 2407 transitions, 256434 flow [2022-12-12 00:02:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-12 00:02:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-12 00:02:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2288 transitions. [2022-12-12 00:02:14,377 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.59958071278826 [2022-12-12 00:02:14,377 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1470 predicate places. [2022-12-12 00:02:14,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 1611 places, 2407 transitions, 256434 flow [2022-12-12 00:02:14,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1607 places, 2400 transitions, 255675 flow [2022-12-12 00:02:14,675 INFO L495 AbstractCegarLoop]: Abstraction has has 1607 places, 2400 transitions, 255675 flow [2022-12-12 00:02:14,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:02:14,676 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:02:14,676 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:02:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-12 00:02:14,676 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:02:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:02:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1173383849, now seen corresponding path program 23 times [2022-12-12 00:02:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:02:14,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815720138] [2022-12-12 00:02:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:02:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:02:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:02:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:02:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:02:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815720138] [2022-12-12 00:02:15,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815720138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:02:15,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:02:15,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:02:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849833902] [2022-12-12 00:02:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:02:15,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:02:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:02:15,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:02:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:02:15,185 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:02:15,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1607 places, 2400 transitions, 255675 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:02:15,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:02:15,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:02:15,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:02:24,757 INFO L130 PetriNetUnfolder]: 5616/10494 cut-off events. [2022-12-12 00:02:24,758 INFO L131 PetriNetUnfolder]: For 926934/938801 co-relation queries the response was YES. [2022-12-12 00:02:24,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521378 conditions, 10494 events. 5616/10494 cut-off events. For 926934/938801 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 88446 event pairs, 213 based on Foata normal form. 16/9967 useless extension candidates. Maximal degree in co-relation 479903. Up to 5888 conditions per place. [2022-12-12 00:02:25,078 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 2048 selfloop transitions, 286 changer transitions 0/2424 dead transitions. [2022-12-12 00:02:25,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1634 places, 2424 transitions, 262963 flow [2022-12-12 00:02:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 00:02:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 00:02:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2676 transitions. [2022-12-12 00:02:25,080 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.601078167115903 [2022-12-12 00:02:25,088 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1493 predicate places. [2022-12-12 00:02:25,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 1634 places, 2424 transitions, 262963 flow [2022-12-12 00:02:25,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1634 places, 2424 transitions, 262963 flow [2022-12-12 00:02:25,355 INFO L495 AbstractCegarLoop]: Abstraction has has 1634 places, 2424 transitions, 262963 flow [2022-12-12 00:02:25,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:02:25,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:02:25,355 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:02:25,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-12-12 00:02:25,355 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:02:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:02:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 297379671, now seen corresponding path program 24 times [2022-12-12 00:02:25,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:02:25,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931775346] [2022-12-12 00:02:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:02:25,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:02:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:02:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:02:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:02:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931775346] [2022-12-12 00:02:25,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931775346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:02:25,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:02:25,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-12 00:02:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560224257] [2022-12-12 00:02:25,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:02:25,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:02:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:02:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:02:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:02:25,856 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:02:25,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1634 places, 2424 transitions, 262963 flow. Second operand has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:02:25,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:02:25,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:02:25,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:02:35,494 INFO L130 PetriNetUnfolder]: 5478/10256 cut-off events. [2022-12-12 00:02:35,494 INFO L131 PetriNetUnfolder]: For 943470/955854 co-relation queries the response was YES. [2022-12-12 00:02:35,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518988 conditions, 10256 events. 5478/10256 cut-off events. For 943470/955854 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 86124 event pairs, 209 based on Foata normal form. 16/9769 useless extension candidates. Maximal degree in co-relation 476795. Up to 5888 conditions per place. [2022-12-12 00:02:35,829 INFO L137 encePairwiseOnDemand]: 129/159 looper letters, 2031 selfloop transitions, 290 changer transitions 0/2411 dead transitions. [2022-12-12 00:02:35,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1646 places, 2411 transitions, 266221 flow [2022-12-12 00:02:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-12 00:02:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-12 00:02:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3065 transitions. [2022-12-12 00:02:35,832 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6023977987421384 [2022-12-12 00:02:35,833 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1505 predicate places. [2022-12-12 00:02:35,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 1646 places, 2411 transitions, 266221 flow [2022-12-12 00:02:36,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1646 places, 2411 transitions, 266221 flow [2022-12-12 00:02:36,100 INFO L495 AbstractCegarLoop]: Abstraction has has 1646 places, 2411 transitions, 266221 flow [2022-12-12 00:02:36,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.55) internal successors, (1831), 20 states have internal predecessors, (1831), 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) [2022-12-12 00:02:36,101 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:02:36,101 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:02:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-12-12 00:02:36,101 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:02:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:02:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1363474765, now seen corresponding path program 25 times [2022-12-12 00:02:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:02:36,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434716254] [2022-12-12 00:02:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:02:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:02:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:02:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:02:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:02:36,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434716254] [2022-12-12 00:02:36,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434716254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:02:36,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:02:36,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-12 00:02:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037709228] [2022-12-12 00:02:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:02:36,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:02:36,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:02:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:02:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:02:36,607 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 159 [2022-12-12 00:02:36,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1646 places, 2411 transitions, 266221 flow. Second operand has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:02:36,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:02:36,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 159 [2022-12-12 00:02:36,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:02:46,005 INFO L130 PetriNetUnfolder]: 5376/10013 cut-off events. [2022-12-12 00:02:46,006 INFO L131 PetriNetUnfolder]: For 951623/964001 co-relation queries the response was YES. [2022-12-12 00:02:46,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516375 conditions, 10013 events. 5376/10013 cut-off events. For 951623/964001 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 83320 event pairs, 209 based on Foata normal form. 18/9540 useless extension candidates. Maximal degree in co-relation 477649. Up to 5888 conditions per place. [2022-12-12 00:02:46,248 INFO L137 encePairwiseOnDemand]: 130/159 looper letters, 2117 selfloop transitions, 173 changer transitions 7/2384 dead transitions. [2022-12-12 00:02:46,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1669 places, 2384 transitions, 267994 flow [2022-12-12 00:02:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-12 00:02:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-12 00:02:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2269 transitions. [2022-12-12 00:02:46,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5946016771488469 [2022-12-12 00:02:46,265 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1528 predicate places. [2022-12-12 00:02:46,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 1669 places, 2384 transitions, 267994 flow [2022-12-12 00:02:46,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1647 places, 2377 transitions, 267193 flow [2022-12-12 00:02:46,667 INFO L495 AbstractCegarLoop]: Abstraction has has 1647 places, 2377 transitions, 267193 flow [2022-12-12 00:02:46,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 91.6842105263158) internal successors, (1742), 19 states have internal predecessors, (1742), 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) [2022-12-12 00:02:46,667 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:02:46,667 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:02:46,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-12-12 00:02:46,667 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:02:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:02:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1626557955, now seen corresponding path program 1 times [2022-12-12 00:02:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:02:46,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672195630] [2022-12-12 00:02:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:02:46,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:02:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:02:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:02:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:02:46,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672195630] [2022-12-12 00:02:46,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672195630] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:02:46,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83915556] [2022-12-12 00:02:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:02:46,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:02:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:02:46,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:02:46,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 00:02:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:02:46,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-12 00:02:46,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:02:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:02:47,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:02:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 00:02:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83915556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:02:47,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:02:47,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-12 00:02:47,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078092125] [2022-12-12 00:02:47,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:02:47,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:02:47,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:02:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:02:47,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:02:47,368 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:02:47,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1647 places, 2377 transitions, 267193 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:02:47,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:02:47,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:02:47,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:03:06,736 INFO L130 PetriNetUnfolder]: 10191/19175 cut-off events. [2022-12-12 00:03:06,736 INFO L131 PetriNetUnfolder]: For 2413142/2434268 co-relation queries the response was YES. [2022-12-12 00:03:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984031 conditions, 19175 events. 10191/19175 cut-off events. For 2413142/2434268 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 168208 event pairs, 490 based on Foata normal form. 25/18066 useless extension candidates. Maximal degree in co-relation 893829. Up to 13841 conditions per place. [2022-12-12 00:03:07,263 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 1438 selfloop transitions, 250 changer transitions 22/3150 dead transitions. [2022-12-12 00:03:07,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1671 places, 3150 transitions, 362842 flow [2022-12-12 00:03:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 00:03:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 00:03:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2810 transitions. [2022-12-12 00:03:07,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7069182389937106 [2022-12-12 00:03:07,265 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1530 predicate places. [2022-12-12 00:03:07,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 1671 places, 3150 transitions, 362842 flow [2022-12-12 00:03:07,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1667 places, 3128 transitions, 360482 flow [2022-12-12 00:03:07,745 INFO L495 AbstractCegarLoop]: Abstraction has has 1667 places, 3128 transitions, 360482 flow [2022-12-12 00:03:07,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:03:07,745 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:03:07,745 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:03:07,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 00:03:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-12-12 00:03:07,952 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:03:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:03:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1492157245, now seen corresponding path program 2 times [2022-12-12 00:03:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:03:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586974369] [2022-12-12 00:03:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:03:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:03:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:03:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:03:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:03:08,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586974369] [2022-12-12 00:03:08,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586974369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:03:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982182432] [2022-12-12 00:03:08,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:03:08,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:03:08,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:03:08,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:03:08,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 00:03:08,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:03:08,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:03:08,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-12 00:03:08,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:03:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:03:08,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:03:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 00:03:08,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982182432] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:03:08,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:03:08,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-12 00:03:08,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493739831] [2022-12-12 00:03:08,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:03:08,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:03:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:03:08,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:03:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:03:08,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:03:08,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1667 places, 3128 transitions, 360482 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:03:08,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:03:08,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:03:08,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:03:43,574 INFO L130 PetriNetUnfolder]: 11737/22124 cut-off events. [2022-12-12 00:03:43,575 INFO L131 PetriNetUnfolder]: For 2815078/2838959 co-relation queries the response was YES. [2022-12-12 00:03:43,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136775 conditions, 22124 events. 11737/22124 cut-off events. For 2815078/2838959 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 197174 event pairs, 643 based on Foata normal form. 44/20767 useless extension candidates. Maximal degree in co-relation 1031724. Up to 16294 conditions per place. [2022-12-12 00:03:44,335 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 1674 selfloop transitions, 216 changer transitions 22/3352 dead transitions. [2022-12-12 00:03:44,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1701 places, 3352 transitions, 388520 flow [2022-12-12 00:03:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 00:03:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 00:03:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3843 transitions. [2022-12-12 00:03:44,337 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.690566037735849 [2022-12-12 00:03:44,338 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1560 predicate places. [2022-12-12 00:03:44,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 1701 places, 3352 transitions, 388520 flow [2022-12-12 00:03:45,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1697 places, 3330 transitions, 386116 flow [2022-12-12 00:03:45,107 INFO L495 AbstractCegarLoop]: Abstraction has has 1697 places, 3330 transitions, 386116 flow [2022-12-12 00:03:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:03:45,107 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:03:45,107 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:03:45,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-12 00:03:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:03:45,316 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:03:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:03:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763487, now seen corresponding path program 3 times [2022-12-12 00:03:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:03:45,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133548848] [2022-12-12 00:03:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:03:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:03:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:03:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:03:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:03:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133548848] [2022-12-12 00:03:45,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133548848] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:03:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254540747] [2022-12-12 00:03:45,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:03:45,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:03:45,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:03:45,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:03:45,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 00:03:45,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 00:03:45,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:03:45,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-12 00:03:45,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:03:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:03:46,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:03:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 00:03:46,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254540747] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:03:46,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:03:46,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-12 00:03:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354125832] [2022-12-12 00:03:46,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:03:46,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:03:46,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:03:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:03:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:03:46,503 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:03:46,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1697 places, 3330 transitions, 386116 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:03:46,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:03:46,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:03:46,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:04:27,400 INFO L130 PetriNetUnfolder]: 12972/24501 cut-off events. [2022-12-12 00:04:27,400 INFO L131 PetriNetUnfolder]: For 3108436/3131587 co-relation queries the response was YES. [2022-12-12 00:04:27,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263158 conditions, 24501 events. 12972/24501 cut-off events. For 3108436/3131587 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 221202 event pairs, 832 based on Foata normal form. 22/22890 useless extension candidates. Maximal degree in co-relation 1145487. Up to 18247 conditions per place. [2022-12-12 00:04:27,999 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 1837 selfloop transitions, 208 changer transitions 22/3507 dead transitions. [2022-12-12 00:04:27,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1726 places, 3507 transitions, 410250 flow [2022-12-12 00:04:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 00:04:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 00:04:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3313 transitions. [2022-12-12 00:04:28,001 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6945492662473794 [2022-12-12 00:04:28,001 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1585 predicate places. [2022-12-12 00:04:28,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 1726 places, 3507 transitions, 410250 flow [2022-12-12 00:04:28,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1722 places, 3485 transitions, 407802 flow [2022-12-12 00:04:28,570 INFO L495 AbstractCegarLoop]: Abstraction has has 1722 places, 3485 transitions, 407802 flow [2022-12-12 00:04:28,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:04:28,571 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:04:28,571 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:04:28,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 00:04:28,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-12-12 00:04:28,775 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:04:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:04:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1600735351, now seen corresponding path program 4 times [2022-12-12 00:04:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:04:28,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357551117] [2022-12-12 00:04:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:04:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:04:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:04:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:04:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:04:28,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357551117] [2022-12-12 00:04:28,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357551117] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:04:28,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893463885] [2022-12-12 00:04:28,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 00:04:28,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:04:28,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:04:28,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:04:28,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 00:04:29,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 00:04:29,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:04:29,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-12 00:04:29,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:04:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:04:29,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:04:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 00:04:29,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893463885] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:04:29,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:04:29,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-12 00:04:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734637770] [2022-12-12 00:04:29,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:04:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:04:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:04:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:04:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:04:29,541 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:04:29,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1722 places, 3485 transitions, 407802 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:04:29,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:04:29,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:04:29,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:05:15,675 INFO L130 PetriNetUnfolder]: 14439/27259 cut-off events. [2022-12-12 00:05:15,675 INFO L131 PetriNetUnfolder]: For 3516420/3541194 co-relation queries the response was YES. [2022-12-12 00:05:15,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1409365 conditions, 27259 events. 14439/27259 cut-off events. For 3516420/3541194 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 249322 event pairs, 1102 based on Foata normal form. 35/25405 useless extension candidates. Maximal degree in co-relation 1277184. Up to 20467 conditions per place. [2022-12-12 00:05:16,394 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 2050 selfloop transitions, 200 changer transitions 22/3712 dead transitions. [2022-12-12 00:05:16,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1749 places, 3712 transitions, 438368 flow [2022-12-12 00:05:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 00:05:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 00:05:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3103 transitions. [2022-12-12 00:05:16,396 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6969901168014375 [2022-12-12 00:05:16,397 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1608 predicate places. [2022-12-12 00:05:16,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 1749 places, 3712 transitions, 438368 flow [2022-12-12 00:05:17,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1745 places, 3690 transitions, 435876 flow [2022-12-12 00:05:17,089 INFO L495 AbstractCegarLoop]: Abstraction has has 1745 places, 3690 transitions, 435876 flow [2022-12-12 00:05:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:05:17,089 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:05:17,089 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:05:17,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 00:05:17,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-12-12 00:05:17,304 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:05:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:05:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1185504699, now seen corresponding path program 5 times [2022-12-12 00:05:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:05:17,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993790726] [2022-12-12 00:05:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:05:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:05:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:05:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:05:17,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:05:17,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993790726] [2022-12-12 00:05:17,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993790726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:05:17,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970071153] [2022-12-12 00:05:17,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 00:05:17,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:05:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:05:17,456 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:05:17,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 00:05:17,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 00:05:17,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:05:17,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-12 00:05:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:05:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:05:17,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:05:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 00:05:17,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970071153] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:05:17,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:05:17,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-12 00:05:17,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983708311] [2022-12-12 00:05:17,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:05:17,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:05:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:05:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:05:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:05:17,970 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:05:17,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1745 places, 3690 transitions, 435876 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:05:17,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:05:17,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:05:17,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:06:22,252 INFO L130 PetriNetUnfolder]: 17145/32515 cut-off events. [2022-12-12 00:06:22,253 INFO L131 PetriNetUnfolder]: For 4069773/4095215 co-relation queries the response was YES. [2022-12-12 00:06:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690921 conditions, 32515 events. 17145/32515 cut-off events. For 4069773/4095215 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 307220 event pairs, 1334 based on Foata normal form. 19/30189 useless extension candidates. Maximal degree in co-relation 1537435. Up to 23584 conditions per place. [2022-12-12 00:06:23,087 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 2373 selfloop transitions, 219 changer transitions 22/4054 dead transitions. [2022-12-12 00:06:23,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1769 places, 4054 transitions, 485896 flow [2022-12-12 00:06:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 00:06:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 00:06:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2805 transitions. [2022-12-12 00:06:23,089 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2022-12-12 00:06:23,089 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1628 predicate places. [2022-12-12 00:06:23,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 1769 places, 4054 transitions, 485896 flow [2022-12-12 00:06:23,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1765 places, 4032 transitions, 483360 flow [2022-12-12 00:06:23,850 INFO L495 AbstractCegarLoop]: Abstraction has has 1765 places, 4032 transitions, 483360 flow [2022-12-12 00:06:23,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:06:23,850 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:06:23,851 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:06:23,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 00:06:24,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-12-12 00:06:24,056 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:06:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:06:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1621129109, now seen corresponding path program 6 times [2022-12-12 00:06:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:06:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328119795] [2022-12-12 00:06:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:06:24,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:06:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:06:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:06:24,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:06:24,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328119795] [2022-12-12 00:06:24,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328119795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:06:24,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158174757] [2022-12-12 00:06:24,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 00:06:24,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:06:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:06:24,194 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:06:24,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 00:06:24,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 00:06:24,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:06:24,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-12 00:06:24,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:06:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:06:24,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:06:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 00:06:24,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158174757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:06:24,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:06:24,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 14 [2022-12-12 00:06:24,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956805630] [2022-12-12 00:06:24,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:06:24,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 00:06:24,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:06:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 00:06:24,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-12 00:06:24,897 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:06:24,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1765 places, 4032 transitions, 483360 flow. Second operand has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:06:24,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:06:24,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:06:24,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:07:33,841 INFO L130 PetriNetUnfolder]: 18427/35049 cut-off events. [2022-12-12 00:07:33,841 INFO L131 PetriNetUnfolder]: For 4614754/4642327 co-relation queries the response was YES. [2022-12-12 00:07:33,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1829521 conditions, 35049 events. 18427/35049 cut-off events. For 4614754/4642327 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 333768 event pairs, 1422 based on Foata normal form. 18/32492 useless extension candidates. Maximal degree in co-relation 1661398. Up to 25657 conditions per place. [2022-12-12 00:07:34,762 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 2531 selfloop transitions, 223 changer transitions 22/4216 dead transitions. [2022-12-12 00:07:34,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1799 places, 4216 transitions, 510692 flow [2022-12-12 00:07:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 00:07:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 00:07:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3845 transitions. [2022-12-12 00:07:34,764 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6909254267744834 [2022-12-12 00:07:34,765 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1658 predicate places. [2022-12-12 00:07:34,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 1799 places, 4216 transitions, 510692 flow [2022-12-12 00:07:35,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1795 places, 4194 transitions, 508112 flow [2022-12-12 00:07:35,667 INFO L495 AbstractCegarLoop]: Abstraction has has 1795 places, 4194 transitions, 508112 flow [2022-12-12 00:07:35,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 109.5) internal successors, (1533), 14 states have internal predecessors, (1533), 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) [2022-12-12 00:07:35,668 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:07:35,668 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:07:35,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-12 00:07:35,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-12-12 00:07:35,874 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:07:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:07:35,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1016020928, now seen corresponding path program 7 times [2022-12-12 00:07:35,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:07:35,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393110468] [2022-12-12 00:07:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:07:35,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:07:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:07:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:07:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:07:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393110468] [2022-12-12 00:07:36,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393110468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:07:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94537653] [2022-12-12 00:07:36,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 00:07:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:07:36,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:07:36,073 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:07:36,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 00:07:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:07:36,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 00:07:36,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:07:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:07:36,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:07:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:07:36,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94537653] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:07:36,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:07:36,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-12-12 00:07:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729507463] [2022-12-12 00:07:36,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:07:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-12 00:07:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:07:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-12 00:07:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-12-12 00:07:36,689 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:07:36,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1795 places, 4194 transitions, 508112 flow. Second operand has 28 states, 28 states have (on average 108.10714285714286) internal successors, (3027), 28 states have internal predecessors, (3027), 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) [2022-12-12 00:07:36,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:07:36,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:07:36,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:09:24,749 INFO L130 PetriNetUnfolder]: 31796/62169 cut-off events. [2022-12-12 00:09:24,749 INFO L131 PetriNetUnfolder]: For 11064625/11100479 co-relation queries the response was YES. [2022-12-12 00:09:25,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3192123 conditions, 62169 events. 31796/62169 cut-off events. For 11064625/11100479 co-relation queries the response was YES. Maximal size of possible extension queue 1643. Compared 636777 event pairs, 1952 based on Foata normal form. 6/58592 useless extension candidates. Maximal degree in co-relation 1674275. Up to 34087 conditions per place. [2022-12-12 00:09:26,266 INFO L137 encePairwiseOnDemand]: 133/159 looper letters, 3120 selfloop transitions, 548 changer transitions 107/5933 dead transitions. [2022-12-12 00:09:26,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1841 places, 5933 transitions, 737192 flow [2022-12-12 00:09:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 00:09:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 00:09:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5062 transitions. [2022-12-12 00:09:26,269 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6773718720727954 [2022-12-12 00:09:26,269 INFO L295 CegarLoopForPetriNet]: 141 programPoint places, 1700 predicate places. [2022-12-12 00:09:26,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 1841 places, 5933 transitions, 737192 flow [2022-12-12 00:09:27,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1841 places, 5826 transitions, 722212 flow [2022-12-12 00:09:27,533 INFO L495 AbstractCegarLoop]: Abstraction has has 1841 places, 5826 transitions, 722212 flow [2022-12-12 00:09:27,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 108.10714285714286) internal successors, (3027), 28 states have internal predecessors, (3027), 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) [2022-12-12 00:09:27,533 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:09:27,533 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:09:27,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 00:09:27,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:09:27,739 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:09:27,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:09:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash 643739546, now seen corresponding path program 8 times [2022-12-12 00:09:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:09:27,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300993895] [2022-12-12 00:09:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:09:27,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:09:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:09:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:09:27,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:09:27,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300993895] [2022-12-12 00:09:27,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300993895] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:09:27,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014560213] [2022-12-12 00:09:27,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:09:27,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:09:27,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:09:27,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:09:27,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 00:09:27,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:09:27,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:09:27,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 00:09:27,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:09:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:09:28,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:09:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:09:28,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014560213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:09:28,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:09:28,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-12-12 00:09:28,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712936912] [2022-12-12 00:09:28,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:09:28,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-12 00:09:28,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:09:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-12 00:09:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-12-12 00:09:28,556 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2022-12-12 00:09:28,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1841 places, 5826 transitions, 722212 flow. Second operand has 28 states, 28 states have (on average 108.71428571428571) internal successors, (3044), 28 states have internal predecessors, (3044), 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) [2022-12-12 00:09:28,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:09:28,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2022-12-12 00:09:28,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 00:10:24,339 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 [2022-12-12 00:10:24,339 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 00:10:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 00:10:24,439 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 00:10:24,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 00:10:24,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-12-12 00:10:24,645 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 104/159 universal loopers) in iteration 70,while PetriNetUnfolder was constructing finite prefix that currently has 1229028 conditions, 23427 events (12010/23426 cut-off events. For 5265412/5291870 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 228087 event pairs, 139 based on Foata normal form. 326/23855 useless extension candidates. Maximal degree in co-relation 661502. Up to 11419 conditions per place.). [2022-12-12 00:10:24,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 00:10:24,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 00:10:24,647 INFO L445 BasicCegarLoop]: Path program histogram: [30, 25, 8, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:10:24,649 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 00:10:24,649 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 00:10:24,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:10:24 BasicIcfg [2022-12-12 00:10:24,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 00:10:24,653 INFO L158 Benchmark]: Toolchain (without parser) took 811299.06ms. Allocated memory was 238.0MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 212.9MB in the beginning and 919.9MB in the end (delta: -707.0MB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2022-12-12 00:10:24,653 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 238.0MB. Free memory was 213.9MB in the beginning and 213.7MB in the end (delta: 181.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 00:10:24,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.36ms. Allocated memory is still 238.0MB. Free memory was 212.9MB in the beginning and 201.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-12 00:10:24,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.18ms. Allocated memory is still 238.0MB. Free memory was 201.9MB in the beginning and 199.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 00:10:24,653 INFO L158 Benchmark]: Boogie Preprocessor took 28.45ms. Allocated memory is still 238.0MB. Free memory was 199.8MB in the beginning and 198.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 00:10:24,653 INFO L158 Benchmark]: RCFGBuilder took 426.06ms. Allocated memory is still 238.0MB. Free memory was 198.2MB in the beginning and 182.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 00:10:24,653 INFO L158 Benchmark]: TraceAbstraction took 810578.95ms. Allocated memory was 238.0MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 180.9MB in the beginning and 919.9MB in the end (delta: -739.0MB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2022-12-12 00:10:24,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 238.0MB. Free memory was 213.9MB in the beginning and 213.7MB in the end (delta: 181.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.36ms. Allocated memory is still 238.0MB. Free memory was 212.9MB in the beginning and 201.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.18ms. Allocated memory is still 238.0MB. Free memory was 201.9MB in the beginning and 199.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.45ms. Allocated memory is still 238.0MB. Free memory was 199.8MB in the beginning and 198.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 426.06ms. Allocated memory is still 238.0MB. Free memory was 198.2MB in the beginning and 182.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 810578.95ms. Allocated memory was 238.0MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 180.9MB in the beginning and 919.9MB in the end (delta: -739.0MB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 104/159 universal loopers) in iteration 70,while PetriNetUnfolder was constructing finite prefix that currently has 1229028 conditions, 23427 events (12010/23426 cut-off events. For 5265412/5291870 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 228087 event pairs, 139 based on Foata normal form. 326/23855 useless extension candidates. Maximal degree in co-relation 661502. Up to 11419 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 104/159 universal loopers) in iteration 70,while PetriNetUnfolder was constructing finite prefix that currently has 1229028 conditions, 23427 events (12010/23426 cut-off events. For 5265412/5291870 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 228087 event pairs, 139 based on Foata normal form. 326/23855 useless extension candidates. Maximal degree in co-relation 661502. Up to 11419 conditions per place.). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 104/159 universal loopers) in iteration 70,while PetriNetUnfolder was constructing finite prefix that currently has 1229028 conditions, 23427 events (12010/23426 cut-off events. For 5265412/5291870 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 228087 event pairs, 139 based on Foata normal form. 326/23855 useless extension candidates. Maximal degree in co-relation 661502. Up to 11419 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 175 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 14.7s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 810.4s, OverallIterations: 70, TraceHistogramMax: 2, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 738.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 22463 SdHoareTripleChecker+Valid, 21.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22463 mSDsluCounter, 32261 SdHoareTripleChecker+Invalid, 17.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 118 IncrementalHoareTripleChecker+Unchecked, 28700 mSDsCounter, 706 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54481 IncrementalHoareTripleChecker+Invalid, 55307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 706 mSolverCounterUnsat, 3561 mSDtfsCounter, 54481 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6588 GetRequests, 3787 SyntacticMatches, 34 SemanticMatches, 2767 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26148 ImplicationChecksByTransitivity, 39.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722212occurred in iteration=69, InterpolantAutomatonStates: 1957, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.7s AutomataMinimizationTime, 69 MinimizatonAttempts, 45802 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 50.1s InterpolantComputationTime, 10615 NumberOfCodeBlocks, 10603 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 12430 ConstructedInterpolants, 147 QuantifiedInterpolants, 116249 SizeOfPredicates, 218 NumberOfNonLiveVariables, 4398 ConjunctsInSsa, 398 ConjunctsInUnsatCore, 100 InterpolantComputations, 57 PerfectInterpolantSequences, 309/375 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