/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:33:12,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:33:12,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:33:12,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:33:12,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:33:12,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:33:12,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:33:12,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:33:12,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:33:12,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:33:12,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:33:12,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:33:12,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:33:12,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:33:12,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:33:12,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:33:12,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:33:12,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:33:12,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:33:12,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:33:12,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:33:12,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:33:12,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:33:12,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:33:12,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:33:12,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:33:12,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:33:12,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:33:12,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:33:12,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:33:12,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:33:12,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:33:12,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:33:12,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:33:12,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:33:12,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:33:12,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:33:12,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:33:12,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:33:12,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:33:12,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:33:12,874 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 [2022-12-06 17:33:12,904 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:33:12,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:33:12,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:33:12,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:33:12,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:33:12,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:33:12,908 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:33:12,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:33:12,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:33:12,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:33:12,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:33:12,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:33:12,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:33:12,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:33:12,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:33:12,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:33:12,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:33:12,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:33:12,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:33:12,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:33:12,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:33:12,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:33:12,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:33:12,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:33:12,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:33:12,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:33:12,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:33:12,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:33:12,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:33:12,912 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:33:12,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:33:12,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:33:13,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:33:13,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:33:13,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:33:13,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:33:13,249 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:33:13,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-12-06 17:33:14,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:33:14,581 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:33:14,581 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-12-06 17:33:14,587 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049bf0235/20d0947f64ce409983e961c6ed9eb78e/FLAG747b63c34 [2022-12-06 17:33:14,599 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049bf0235/20d0947f64ce409983e961c6ed9eb78e [2022-12-06 17:33:14,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:33:14,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:33:14,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:33:14,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:33:14,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:33:14,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f71e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14, skipping insertion in model container [2022-12-06 17:33:14,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:33:14,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:33:14,759 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/parallel-misc-1.wvr.c[2755,2768] [2022-12-06 17:33:14,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:33:14,786 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:33:14,829 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/parallel-misc-1.wvr.c[2755,2768] [2022-12-06 17:33:14,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:33:14,848 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:33:14,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14 WrapperNode [2022-12-06 17:33:14,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:33:14,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:33:14,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:33:14,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:33:14,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,915 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-12-06 17:33:14,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:33:14,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:33:14,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:33:14,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:33:14,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:33:14,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:33:14,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:33:14,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:33:14,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (1/1) ... [2022-12-06 17:33:14,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:33:14,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:33:15,009 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) [2022-12-06 17:33:15,031 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 [2022-12-06 17:33:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:33:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:33:15,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:33:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:33:15,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:33:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:33:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:33:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:33:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 17:33:15,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:33:15,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:33:15,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:33:15,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:33:15,052 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:33:15,166 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:33:15,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:33:15,630 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:33:15,640 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:33:15,640 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 17:33:15,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:15 BoogieIcfgContainer [2022-12-06 17:33:15,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:33:15,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:33:15,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:33:15,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:33:15,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:33:14" (1/3) ... [2022-12-06 17:33:15,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2072a45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:15, skipping insertion in model container [2022-12-06 17:33:15,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:14" (2/3) ... [2022-12-06 17:33:15,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2072a45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:33:15, skipping insertion in model container [2022-12-06 17:33:15,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:15" (3/3) ... [2022-12-06 17:33:15,648 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-12-06 17:33:15,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:33:15,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:33:15,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:33:15,796 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 17:33:15,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 336 transitions, 688 flow [2022-12-06 17:33:15,992 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-12-06 17:33:15,993 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:33:16,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 334 events. 28/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 760 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-12-06 17:33:16,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 336 transitions, 688 flow [2022-12-06 17:33:16,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 326 transitions, 664 flow [2022-12-06 17:33:16,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:33:16,028 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;@3af8d306, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:33:16,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 17:33:16,136 INFO L130 PetriNetUnfolder]: 28/325 cut-off events. [2022-12-06 17:33:16,136 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:33:16,136 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:16,137 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:16,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash 436528766, now seen corresponding path program 1 times [2022-12-06 17:33:16,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:16,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210983525] [2022-12-06 17:33:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:16,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:17,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210983525] [2022-12-06 17:33:17,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210983525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:17,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:17,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:17,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501788017] [2022-12-06 17:33:17,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:17,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:17,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:17,674 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:17,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 326 transitions, 664 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:17,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:17,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:17,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:21,234 INFO L130 PetriNetUnfolder]: 4048/12719 cut-off events. [2022-12-06 17:33:21,234 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-06 17:33:21,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20770 conditions, 12719 events. 4048/12719 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 119956 event pairs, 689 based on Foata normal form. 1577/13425 useless extension candidates. Maximal degree in co-relation 19979. Up to 4039 conditions per place. [2022-12-06 17:33:21,308 INFO L137 encePairwiseOnDemand]: 267/336 looper letters, 574 selfloop transitions, 75 changer transitions 38/874 dead transitions. [2022-12-06 17:33:21,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 874 transitions, 3203 flow [2022-12-06 17:33:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:33:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:33:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7494 transitions. [2022-12-06 17:33:21,336 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6559873949579832 [2022-12-06 17:33:21,342 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 33 predicate places. [2022-12-06 17:33:21,342 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 874 transitions, 3203 flow [2022-12-06 17:33:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:21,345 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:21,345 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:21,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:33:21,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:21,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash 841938772, now seen corresponding path program 2 times [2022-12-06 17:33:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:21,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804298901] [2022-12-06 17:33:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:21,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:22,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804298901] [2022-12-06 17:33:22,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804298901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:22,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:22,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:22,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831217968] [2022-12-06 17:33:22,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:22,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:22,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:22,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:22,033 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:22,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 874 transitions, 3203 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:22,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:22,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:25,550 INFO L130 PetriNetUnfolder]: 4487/14008 cut-off events. [2022-12-06 17:33:25,550 INFO L131 PetriNetUnfolder]: For 2214/2532 co-relation queries the response was YES. [2022-12-06 17:33:25,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31577 conditions, 14008 events. 4487/14008 cut-off events. For 2214/2532 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 133848 event pairs, 356 based on Foata normal form. 20/13096 useless extension candidates. Maximal degree in co-relation 30555. Up to 4974 conditions per place. [2022-12-06 17:33:25,700 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 935 selfloop transitions, 161 changer transitions 56/1339 dead transitions. [2022-12-06 17:33:25,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1339 transitions, 7382 flow [2022-12-06 17:33:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-06 17:33:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-06 17:33:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7710 transitions. [2022-12-06 17:33:25,719 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6374007936507936 [2022-12-06 17:33:25,721 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 68 predicate places. [2022-12-06 17:33:25,721 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 1339 transitions, 7382 flow [2022-12-06 17:33:25,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:25,724 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:25,727 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:25,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:33:25,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1356337742, now seen corresponding path program 3 times [2022-12-06 17:33:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903074395] [2022-12-06 17:33:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:26,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903074395] [2022-12-06 17:33:26,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903074395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:26,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:26,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165864290] [2022-12-06 17:33:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:26,389 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:26,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1339 transitions, 7382 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:26,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:26,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:26,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:31,043 INFO L130 PetriNetUnfolder]: 5277/16781 cut-off events. [2022-12-06 17:33:31,044 INFO L131 PetriNetUnfolder]: For 7244/8438 co-relation queries the response was YES. [2022-12-06 17:33:31,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47870 conditions, 16781 events. 5277/16781 cut-off events. For 7244/8438 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 167919 event pairs, 422 based on Foata normal form. 128/15807 useless extension candidates. Maximal degree in co-relation 46551. Up to 5919 conditions per place. [2022-12-06 17:33:31,119 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1288 selfloop transitions, 306 changer transitions 83/1864 dead transitions. [2022-12-06 17:33:31,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1864 transitions, 13937 flow [2022-12-06 17:33:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-06 17:33:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-06 17:33:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 11150 transitions. [2022-12-06 17:33:31,142 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6261230907457322 [2022-12-06 17:33:31,144 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 120 predicate places. [2022-12-06 17:33:31,144 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 1864 transitions, 13937 flow [2022-12-06 17:33:31,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:31,147 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:31,147 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:33:31,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1414625728, now seen corresponding path program 4 times [2022-12-06 17:33:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:31,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291888905] [2022-12-06 17:33:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291888905] [2022-12-06 17:33:31,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291888905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:31,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:31,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14320406] [2022-12-06 17:33:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:31,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:31,764 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:31,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1864 transitions, 13937 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:31,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:31,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:31,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:36,210 INFO L130 PetriNetUnfolder]: 5317/16952 cut-off events. [2022-12-06 17:33:36,210 INFO L131 PetriNetUnfolder]: For 13757/15202 co-relation queries the response was YES. [2022-12-06 17:33:36,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58663 conditions, 16952 events. 5317/16952 cut-off events. For 13757/15202 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 170140 event pairs, 427 based on Foata normal form. 150/15988 useless extension candidates. Maximal degree in co-relation 56046. Up to 5978 conditions per place. [2022-12-06 17:33:36,300 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1307 selfloop transitions, 327 changer transitions 101/1922 dead transitions. [2022-12-06 17:33:36,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1922 transitions, 17886 flow [2022-12-06 17:33:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:33:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:33:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 10744 transitions. [2022-12-06 17:33:36,317 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2022-12-06 17:33:36,319 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 170 predicate places. [2022-12-06 17:33:36,319 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 1922 transitions, 17886 flow [2022-12-06 17:33:36,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:36,321 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:36,321 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:33:36,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1475813034, now seen corresponding path program 5 times [2022-12-06 17:33:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:36,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809406836] [2022-12-06 17:33:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:36,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:36,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809406836] [2022-12-06 17:33:36,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809406836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:36,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:36,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:36,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723365437] [2022-12-06 17:33:36,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:36,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:36,910 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:36,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1922 transitions, 17886 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:36,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:36,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:36,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:41,529 INFO L130 PetriNetUnfolder]: 5327/16878 cut-off events. [2022-12-06 17:33:41,530 INFO L131 PetriNetUnfolder]: For 21868/23529 co-relation queries the response was YES. [2022-12-06 17:33:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69170 conditions, 16878 events. 5327/16878 cut-off events. For 21868/23529 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 169449 event pairs, 355 based on Foata normal form. 94/15896 useless extension candidates. Maximal degree in co-relation 67275. Up to 6022 conditions per place. [2022-12-06 17:33:41,624 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1318 selfloop transitions, 325 changer transitions 121/1951 dead transitions. [2022-12-06 17:33:41,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 1951 transitions, 21728 flow [2022-12-06 17:33:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-06 17:33:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-06 17:33:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 11160 transitions. [2022-12-06 17:33:41,636 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6266846361185984 [2022-12-06 17:33:41,637 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 222 predicate places. [2022-12-06 17:33:41,637 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 1951 transitions, 21728 flow [2022-12-06 17:33:41,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:41,639 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:41,639 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:41,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:33:41,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1437269280, now seen corresponding path program 6 times [2022-12-06 17:33:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791271776] [2022-12-06 17:33:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:41,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:42,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791271776] [2022-12-06 17:33:42,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791271776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:42,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:42,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-12-06 17:33:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147226826] [2022-12-06 17:33:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:42,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-06 17:33:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-06 17:33:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2022-12-06 17:33:42,489 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 336 [2022-12-06 17:33:42,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1951 transitions, 21728 flow. Second operand has 25 states, 25 states have (on average 172.6) internal successors, (4315), 25 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:42,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:42,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 336 [2022-12-06 17:33:42,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:49,158 INFO L130 PetriNetUnfolder]: 7480/20508 cut-off events. [2022-12-06 17:33:49,158 INFO L131 PetriNetUnfolder]: For 52563/54626 co-relation queries the response was YES. [2022-12-06 17:33:49,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97286 conditions, 20508 events. 7480/20508 cut-off events. For 52563/54626 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 197442 event pairs, 1013 based on Foata normal form. 97/19208 useless extension candidates. Maximal degree in co-relation 92978. Up to 9408 conditions per place. [2022-12-06 17:33:49,301 INFO L137 encePairwiseOnDemand]: 291/336 looper letters, 1740 selfloop transitions, 247 changer transitions 168/2316 dead transitions. [2022-12-06 17:33:49,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 2316 transitions, 29943 flow [2022-12-06 17:33:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-06 17:33:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-06 17:33:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8341 transitions. [2022-12-06 17:33:49,322 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5516534391534391 [2022-12-06 17:33:49,327 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 266 predicate places. [2022-12-06 17:33:49,327 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 2316 transitions, 29943 flow [2022-12-06 17:33:49,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 172.6) internal successors, (4315), 25 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:49,330 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:49,330 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 17:33:49,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash 456888990, now seen corresponding path program 7 times [2022-12-06 17:33:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:49,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508137843] [2022-12-06 17:33:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:49,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508137843] [2022-12-06 17:33:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508137843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238975352] [2022-12-06 17:33:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:49,920 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:49,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 2316 transitions, 29943 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:49,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:49,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:49,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:33:55,714 INFO L130 PetriNetUnfolder]: 7799/21333 cut-off events. [2022-12-06 17:33:55,714 INFO L131 PetriNetUnfolder]: For 76918/79579 co-relation queries the response was YES. [2022-12-06 17:33:55,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113785 conditions, 21333 events. 7799/21333 cut-off events. For 76918/79579 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 206472 event pairs, 1067 based on Foata normal form. 117/20009 useless extension candidates. Maximal degree in co-relation 108515. Up to 9822 conditions per place. [2022-12-06 17:33:55,930 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1616 selfloop transitions, 440 changer transitions 187/2481 dead transitions. [2022-12-06 17:33:55,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 2481 transitions, 36770 flow [2022-12-06 17:33:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:33:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:33:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 10777 transitions. [2022-12-06 17:33:55,945 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6289098972922502 [2022-12-06 17:33:55,946 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 316 predicate places. [2022-12-06 17:33:55,946 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 2481 transitions, 36770 flow [2022-12-06 17:33:55,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:55,948 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:33:55,948 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:33:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:33:55,948 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:33:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:33:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1493010630, now seen corresponding path program 8 times [2022-12-06 17:33:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:33:55,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142020995] [2022-12-06 17:33:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:33:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:33:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:33:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:33:56,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:33:56,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142020995] [2022-12-06 17:33:56,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142020995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:33:56,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:33:56,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:33:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702661555] [2022-12-06 17:33:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:33:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:33:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:33:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:33:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:33:56,511 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:33:56,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 2481 transitions, 36770 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:33:56,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:33:56,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:33:56,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:02,360 INFO L130 PetriNetUnfolder]: 7802/21332 cut-off events. [2022-12-06 17:34:02,360 INFO L131 PetriNetUnfolder]: For 103515/106508 co-relation queries the response was YES. [2022-12-06 17:34:02,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126689 conditions, 21332 events. 7802/21332 cut-off events. For 103515/106508 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 206661 event pairs, 1071 based on Foata normal form. 117/20011 useless extension candidates. Maximal degree in co-relation 120784. Up to 9822 conditions per place. [2022-12-06 17:34:02,474 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1615 selfloop transitions, 437 changer transitions 207/2497 dead transitions. [2022-12-06 17:34:02,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 2497 transitions, 41551 flow [2022-12-06 17:34:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:34:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:34:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 10778 transitions. [2022-12-06 17:34:02,485 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.628968253968254 [2022-12-06 17:34:02,485 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 366 predicate places. [2022-12-06 17:34:02,485 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 2497 transitions, 41551 flow [2022-12-06 17:34:02,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:02,487 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:02,487 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:02,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 17:34:02,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:02,488 INFO L85 PathProgramCache]: Analyzing trace with hash 859328312, now seen corresponding path program 9 times [2022-12-06 17:34:02,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:02,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812026908] [2022-12-06 17:34:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:02,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812026908] [2022-12-06 17:34:02,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812026908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:02,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:02,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020400312] [2022-12-06 17:34:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:02,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:02,973 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:02,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 2497 transitions, 41551 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:02,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:02,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:02,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:09,062 INFO L130 PetriNetUnfolder]: 7809/21341 cut-off events. [2022-12-06 17:34:09,062 INFO L131 PetriNetUnfolder]: For 132400/135871 co-relation queries the response was YES. [2022-12-06 17:34:09,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139723 conditions, 21341 events. 7809/21341 cut-off events. For 132400/135871 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 206844 event pairs, 1043 based on Foata normal form. 114/20020 useless extension candidates. Maximal degree in co-relation 136220. Up to 9822 conditions per place. [2022-12-06 17:34:09,199 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1619 selfloop transitions, 436 changer transitions 225/2518 dead transitions. [2022-12-06 17:34:09,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 2518 transitions, 46502 flow [2022-12-06 17:34:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-06 17:34:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-06 17:34:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 11174 transitions. [2022-12-06 17:34:09,209 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6274707996406109 [2022-12-06 17:34:09,210 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 418 predicate places. [2022-12-06 17:34:09,210 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 2518 transitions, 46502 flow [2022-12-06 17:34:09,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:09,212 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:09,212 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:09,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 17:34:09,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:09,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1825737200, now seen corresponding path program 10 times [2022-12-06 17:34:09,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322811675] [2022-12-06 17:34:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:09,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:09,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322811675] [2022-12-06 17:34:09,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322811675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:09,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:09,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:09,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21207805] [2022-12-06 17:34:09,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:09,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:09,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:09,840 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:09,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 2518 transitions, 46502 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:09,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:09,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:09,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:17,375 INFO L130 PetriNetUnfolder]: 7808/21380 cut-off events. [2022-12-06 17:34:17,375 INFO L131 PetriNetUnfolder]: For 166226/170105 co-relation queries the response was YES. [2022-12-06 17:34:17,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152657 conditions, 21380 events. 7808/21380 cut-off events. For 166226/170105 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 207642 event pairs, 1050 based on Foata normal form. 114/20058 useless extension candidates. Maximal degree in co-relation 148793. Up to 9822 conditions per place. [2022-12-06 17:34:17,509 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1622 selfloop transitions, 432 changer transitions 247/2539 dead transitions. [2022-12-06 17:34:17,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 2539 transitions, 51531 flow [2022-12-06 17:34:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 17:34:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 17:34:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10385 transitions. [2022-12-06 17:34:17,518 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6307701652089407 [2022-12-06 17:34:17,519 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 466 predicate places. [2022-12-06 17:34:17,519 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 2539 transitions, 51531 flow [2022-12-06 17:34:17,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:17,521 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:17,521 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:17,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 17:34:17,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1902767116, now seen corresponding path program 11 times [2022-12-06 17:34:17,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:17,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365553229] [2022-12-06 17:34:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:17,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:18,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365553229] [2022-12-06 17:34:18,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365553229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:18,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:18,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:18,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749343441] [2022-12-06 17:34:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:18,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:18,010 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:18,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 2539 transitions, 51531 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:18,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:18,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:18,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:24,069 INFO L130 PetriNetUnfolder]: 7807/21428 cut-off events. [2022-12-06 17:34:24,069 INFO L131 PetriNetUnfolder]: For 203876/208295 co-relation queries the response was YES. [2022-12-06 17:34:24,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165596 conditions, 21428 events. 7807/21428 cut-off events. For 203876/208295 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 208132 event pairs, 1068 based on Foata normal form. 119/20107 useless extension candidates. Maximal degree in co-relation 157656. Up to 9822 conditions per place. [2022-12-06 17:34:24,211 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1612 selfloop transitions, 429 changer transitions 267/2546 dead transitions. [2022-12-06 17:34:24,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 2546 transitions, 56305 flow [2022-12-06 17:34:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 17:34:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 17:34:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10382 transitions. [2022-12-06 17:34:24,232 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6305879494655005 [2022-12-06 17:34:24,232 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 514 predicate places. [2022-12-06 17:34:24,232 INFO L495 AbstractCegarLoop]: Abstraction has has 819 places, 2546 transitions, 56305 flow [2022-12-06 17:34:24,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:24,234 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:24,234 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:24,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 17:34:24,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1463649226, now seen corresponding path program 12 times [2022-12-06 17:34:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:24,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930973148] [2022-12-06 17:34:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:24,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:24,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930973148] [2022-12-06 17:34:24,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930973148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:24,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:24,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505980679] [2022-12-06 17:34:24,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:24,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:24,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:24,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:24,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:24,832 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:24,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 2546 transitions, 56305 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:24,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:24,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:31,244 INFO L130 PetriNetUnfolder]: 7807/21431 cut-off events. [2022-12-06 17:34:31,244 INFO L131 PetriNetUnfolder]: For 244575/249260 co-relation queries the response was YES. [2022-12-06 17:34:31,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178406 conditions, 21431 events. 7807/21431 cut-off events. For 244575/249260 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 208046 event pairs, 1071 based on Foata normal form. 121/20110 useless extension candidates. Maximal degree in co-relation 169889. Up to 9822 conditions per place. [2022-12-06 17:34:31,382 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1596 selfloop transitions, 423 changer transitions 288/2545 dead transitions. [2022-12-06 17:34:31,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 2545 transitions, 60893 flow [2022-12-06 17:34:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 17:34:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 17:34:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 11379 transitions. [2022-12-06 17:34:31,391 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6271494708994709 [2022-12-06 17:34:31,392 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 567 predicate places. [2022-12-06 17:34:31,392 INFO L495 AbstractCegarLoop]: Abstraction has has 872 places, 2545 transitions, 60893 flow [2022-12-06 17:34:31,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:31,393 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:31,393 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:31,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-06 17:34:31,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:31,394 INFO L85 PathProgramCache]: Analyzing trace with hash -998140296, now seen corresponding path program 13 times [2022-12-06 17:34:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:31,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625831963] [2022-12-06 17:34:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:31,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625831963] [2022-12-06 17:34:31,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625831963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:31,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:31,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:31,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955917382] [2022-12-06 17:34:31,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:31,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:31,868 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:31,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 2545 transitions, 60893 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:31,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:31,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:31,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:38,916 INFO L130 PetriNetUnfolder]: 7825/21434 cut-off events. [2022-12-06 17:34:38,916 INFO L131 PetriNetUnfolder]: For 289333/294574 co-relation queries the response was YES. [2022-12-06 17:34:38,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191853 conditions, 21434 events. 7825/21434 cut-off events. For 289333/294574 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 208431 event pairs, 1042 based on Foata normal form. 119/20119 useless extension candidates. Maximal degree in co-relation 186934. Up to 9860 conditions per place. [2022-12-06 17:34:39,066 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1640 selfloop transitions, 484 changer transitions 314/2676 dead transitions. [2022-12-06 17:34:39,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 2676 transitions, 69212 flow [2022-12-06 17:34:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-06 17:34:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-06 17:34:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 9144 transitions. [2022-12-06 17:34:39,073 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.632890365448505 [2022-12-06 17:34:39,074 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 609 predicate places. [2022-12-06 17:34:39,074 INFO L495 AbstractCegarLoop]: Abstraction has has 914 places, 2676 transitions, 69212 flow [2022-12-06 17:34:39,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:39,075 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:39,075 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:39,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-06 17:34:39,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:39,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:39,076 INFO L85 PathProgramCache]: Analyzing trace with hash -895873138, now seen corresponding path program 14 times [2022-12-06 17:34:39,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:39,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139561252] [2022-12-06 17:34:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:39,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:39,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:39,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139561252] [2022-12-06 17:34:39,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139561252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:39,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:39,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:39,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220716920] [2022-12-06 17:34:39,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:39,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:39,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:39,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:39,617 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:39,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 2676 transitions, 69212 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:39,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:39,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:39,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:46,090 INFO L130 PetriNetUnfolder]: 7883/21633 cut-off events. [2022-12-06 17:34:46,090 INFO L131 PetriNetUnfolder]: For 341121/346674 co-relation queries the response was YES. [2022-12-06 17:34:46,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206495 conditions, 21633 events. 7883/21633 cut-off events. For 341121/346674 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 210650 event pairs, 1053 based on Foata normal form. 122/20313 useless extension candidates. Maximal degree in co-relation 201181. Up to 9931 conditions per place. [2022-12-06 17:34:46,359 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1660 selfloop transitions, 510 changer transitions 331/2739 dead transitions. [2022-12-06 17:34:46,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 2739 transitions, 75991 flow [2022-12-06 17:34:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:34:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:34:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 9929 transitions. [2022-12-06 17:34:46,364 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6287360688956434 [2022-12-06 17:34:46,364 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 655 predicate places. [2022-12-06 17:34:46,365 INFO L495 AbstractCegarLoop]: Abstraction has has 960 places, 2739 transitions, 75991 flow [2022-12-06 17:34:46,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:46,366 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:46,366 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-06 17:34:46,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -846556850, now seen corresponding path program 15 times [2022-12-06 17:34:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:46,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166661554] [2022-12-06 17:34:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:46,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166661554] [2022-12-06 17:34:46,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166661554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:46,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:46,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:46,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4930638] [2022-12-06 17:34:46,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:46,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:46,861 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:46,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 2739 transitions, 75991 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:46,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:46,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:46,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:53,868 INFO L130 PetriNetUnfolder]: 7883/21621 cut-off events. [2022-12-06 17:34:53,869 INFO L131 PetriNetUnfolder]: For 391320/397415 co-relation queries the response was YES. [2022-12-06 17:34:53,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219597 conditions, 21621 events. 7883/21621 cut-off events. For 391320/397415 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 210560 event pairs, 1047 based on Foata normal form. 119/20297 useless extension candidates. Maximal degree in co-relation 208808. Up to 9931 conditions per place. [2022-12-06 17:34:54,027 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1654 selfloop transitions, 503 changer transitions 352/2747 dead transitions. [2022-12-06 17:34:54,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1006 places, 2747 transitions, 81256 flow [2022-12-06 17:34:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:34:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:34:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 9926 transitions. [2022-12-06 17:34:54,034 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6285460992907801 [2022-12-06 17:34:54,035 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 701 predicate places. [2022-12-06 17:34:54,035 INFO L495 AbstractCegarLoop]: Abstraction has has 1006 places, 2747 transitions, 81256 flow [2022-12-06 17:34:54,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:54,036 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:54,037 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:54,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 17:34:54,037 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:34:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1637132302, now seen corresponding path program 16 times [2022-12-06 17:34:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:54,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584526559] [2022-12-06 17:34:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:54,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:54,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584526559] [2022-12-06 17:34:54,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584526559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:54,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:54,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:34:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347286676] [2022-12-06 17:34:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:34:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:34:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:34:54,508 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:34:54,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1006 places, 2747 transitions, 81256 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:54,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:54,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:34:54,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:01,819 INFO L130 PetriNetUnfolder]: 7883/21660 cut-off events. [2022-12-06 17:35:01,819 INFO L131 PetriNetUnfolder]: For 450793/457418 co-relation queries the response was YES. [2022-12-06 17:35:01,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232901 conditions, 21660 events. 7883/21660 cut-off events. For 450793/457418 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 211372 event pairs, 1052 based on Foata normal form. 117/20341 useless extension candidates. Maximal degree in co-relation 226767. Up to 9944 conditions per place. [2022-12-06 17:35:01,984 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1653 selfloop transitions, 495 changer transitions 378/2764 dead transitions. [2022-12-06 17:35:01,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 2764 transitions, 86856 flow [2022-12-06 17:35:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:35:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:35:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 9952 transitions. [2022-12-06 17:35:01,989 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.630192502532928 [2022-12-06 17:35:01,989 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 747 predicate places. [2022-12-06 17:35:01,989 INFO L495 AbstractCegarLoop]: Abstraction has has 1052 places, 2764 transitions, 86856 flow [2022-12-06 17:35:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:01,990 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:01,990 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-06 17:35:01,991 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1300946062, now seen corresponding path program 17 times [2022-12-06 17:35:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:01,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224759923] [2022-12-06 17:35:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:02,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224759923] [2022-12-06 17:35:02,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224759923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:02,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:02,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12750031] [2022-12-06 17:35:02,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:02,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:02,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:02,573 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:02,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 2764 transitions, 86856 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:02,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:02,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:02,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:09,773 INFO L130 PetriNetUnfolder]: 7896/21732 cut-off events. [2022-12-06 17:35:09,774 INFO L131 PetriNetUnfolder]: For 512368/519243 co-relation queries the response was YES. [2022-12-06 17:35:09,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246641 conditions, 21732 events. 7896/21732 cut-off events. For 512368/519243 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 212570 event pairs, 1052 based on Foata normal form. 120/20412 useless extension candidates. Maximal degree in co-relation 240082. Up to 9944 conditions per place. [2022-12-06 17:35:09,936 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1657 selfloop transitions, 505 changer transitions 395/2795 dead transitions. [2022-12-06 17:35:09,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1100 places, 2795 transitions, 93031 flow [2022-12-06 17:35:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 17:35:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 17:35:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10350 transitions. [2022-12-06 17:35:09,941 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6286443148688047 [2022-12-06 17:35:09,942 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 795 predicate places. [2022-12-06 17:35:09,942 INFO L495 AbstractCegarLoop]: Abstraction has has 1100 places, 2795 transitions, 93031 flow [2022-12-06 17:35:09,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:09,943 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:09,943 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:09,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-06 17:35:09,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash -632565554, now seen corresponding path program 18 times [2022-12-06 17:35:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:09,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538091602] [2022-12-06 17:35:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:10,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538091602] [2022-12-06 17:35:10,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538091602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:10,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:10,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177695509] [2022-12-06 17:35:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:10,406 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:10,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1100 places, 2795 transitions, 93031 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:10,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:10,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:10,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:17,690 INFO L130 PetriNetUnfolder]: 7899/21803 cut-off events. [2022-12-06 17:35:17,691 INFO L131 PetriNetUnfolder]: For 575972/583377 co-relation queries the response was YES. [2022-12-06 17:35:17,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260083 conditions, 21803 events. 7899/21803 cut-off events. For 575972/583377 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 213692 event pairs, 1054 based on Foata normal form. 115/20475 useless extension candidates. Maximal degree in co-relation 246866. Up to 9944 conditions per place. [2022-12-06 17:35:17,858 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1654 selfloop transitions, 500 changer transitions 416/2808 dead transitions. [2022-12-06 17:35:17,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1148 places, 2808 transitions, 98652 flow [2022-12-06 17:35:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 17:35:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 17:35:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10349 transitions. [2022-12-06 17:35:17,863 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6285835762876579 [2022-12-06 17:35:17,864 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 843 predicate places. [2022-12-06 17:35:17,864 INFO L495 AbstractCegarLoop]: Abstraction has has 1148 places, 2808 transitions, 98652 flow [2022-12-06 17:35:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:17,864 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:17,864 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-06 17:35:17,864 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2116606132, now seen corresponding path program 19 times [2022-12-06 17:35:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:17,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031858490] [2022-12-06 17:35:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:18,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031858490] [2022-12-06 17:35:18,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031858490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:18,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:18,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:18,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844757943] [2022-12-06 17:35:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:18,340 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:18,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1148 places, 2808 transitions, 98652 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:18,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:18,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:18,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:25,697 INFO L130 PetriNetUnfolder]: 7898/21782 cut-off events. [2022-12-06 17:35:25,697 INFO L131 PetriNetUnfolder]: For 646348/654085 co-relation queries the response was YES. [2022-12-06 17:35:25,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273294 conditions, 21782 events. 7898/21782 cut-off events. For 646348/654085 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 213365 event pairs, 1058 based on Foata normal form. 115/20458 useless extension candidates. Maximal degree in co-relation 265855. Up to 9944 conditions per place. [2022-12-06 17:35:25,880 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1650 selfloop transitions, 491 changer transitions 438/2817 dead transitions. [2022-12-06 17:35:25,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1195 places, 2817 transitions, 104156 flow [2022-12-06 17:35:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:35:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:35:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10158 transitions. [2022-12-06 17:35:25,887 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6298363095238095 [2022-12-06 17:35:25,888 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 890 predicate places. [2022-12-06 17:35:25,888 INFO L495 AbstractCegarLoop]: Abstraction has has 1195 places, 2817 transitions, 104156 flow [2022-12-06 17:35:25,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:25,889 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:25,889 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:25,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-06 17:35:25,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash -457984972, now seen corresponding path program 20 times [2022-12-06 17:35:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391522172] [2022-12-06 17:35:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:26,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:26,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391522172] [2022-12-06 17:35:26,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391522172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:26,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:26,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:26,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789595257] [2022-12-06 17:35:26,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:26,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:26,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:26,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:26,346 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:26,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1195 places, 2817 transitions, 104156 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:26,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:26,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:26,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:34,283 INFO L130 PetriNetUnfolder]: 7905/21844 cut-off events. [2022-12-06 17:35:34,283 INFO L131 PetriNetUnfolder]: For 725568/733917 co-relation queries the response was YES. [2022-12-06 17:35:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286970 conditions, 21844 events. 7905/21844 cut-off events. For 725568/733917 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 214149 event pairs, 1078 based on Foata normal form. 119/20521 useless extension candidates. Maximal degree in co-relation 272018. Up to 9944 conditions per place. [2022-12-06 17:35:34,484 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1648 selfloop transitions, 496 changer transitions 456/2838 dead transitions. [2022-12-06 17:35:34,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1245 places, 2838 transitions, 110209 flow [2022-12-06 17:35:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:35:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:35:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 10730 transitions. [2022-12-06 17:35:34,489 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6261671335200747 [2022-12-06 17:35:34,490 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 940 predicate places. [2022-12-06 17:35:34,490 INFO L495 AbstractCegarLoop]: Abstraction has has 1245 places, 2838 transitions, 110209 flow [2022-12-06 17:35:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:34,490 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:34,490 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:34,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-06 17:35:34,491 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash -770974792, now seen corresponding path program 21 times [2022-12-06 17:35:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787772753] [2022-12-06 17:35:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:34,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787772753] [2022-12-06 17:35:34,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787772753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:34,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:34,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016600148] [2022-12-06 17:35:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:34,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:34,945 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:34,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1245 places, 2838 transitions, 110209 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:34,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:34,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:34,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:42,879 INFO L130 PetriNetUnfolder]: 7904/21873 cut-off events. [2022-12-06 17:35:42,880 INFO L131 PetriNetUnfolder]: For 793260/801983 co-relation queries the response was YES. [2022-12-06 17:35:42,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300243 conditions, 21873 events. 7904/21873 cut-off events. For 793260/801983 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 214762 event pairs, 1057 based on Foata normal form. 117/20546 useless extension candidates. Maximal degree in co-relation 284481. Up to 9944 conditions per place. [2022-12-06 17:35:43,165 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1642 selfloop transitions, 489 changer transitions 476/2845 dead transitions. [2022-12-06 17:35:43,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1291 places, 2845 transitions, 115721 flow [2022-12-06 17:35:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:35:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:35:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 9938 transitions. [2022-12-06 17:35:43,172 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.629305977710233 [2022-12-06 17:35:43,173 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 986 predicate places. [2022-12-06 17:35:43,173 INFO L495 AbstractCegarLoop]: Abstraction has has 1291 places, 2845 transitions, 115721 flow [2022-12-06 17:35:43,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:43,174 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:43,174 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:43,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-06 17:35:43,174 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1256623666, now seen corresponding path program 22 times [2022-12-06 17:35:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:43,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588097785] [2022-12-06 17:35:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:43,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:43,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588097785] [2022-12-06 17:35:43,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588097785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:43,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:43,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788062362] [2022-12-06 17:35:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:43,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:43,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:43,839 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:43,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1291 places, 2845 transitions, 115721 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:43,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:43,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:52,331 INFO L130 PetriNetUnfolder]: 7904/21880 cut-off events. [2022-12-06 17:35:52,331 INFO L131 PetriNetUnfolder]: For 874756/883961 co-relation queries the response was YES. [2022-12-06 17:35:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313330 conditions, 21880 events. 7904/21880 cut-off events. For 874756/883961 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 214903 event pairs, 1055 based on Foata normal form. 121/20558 useless extension candidates. Maximal degree in co-relation 296921. Up to 9944 conditions per place. [2022-12-06 17:35:52,531 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1626 selfloop transitions, 482 changer transitions 498/2844 dead transitions. [2022-12-06 17:35:52,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1341 places, 2844 transitions, 120887 flow [2022-12-06 17:35:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:35:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:35:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 10731 transitions. [2022-12-06 17:35:52,537 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6262254901960784 [2022-12-06 17:35:52,537 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1036 predicate places. [2022-12-06 17:35:52,537 INFO L495 AbstractCegarLoop]: Abstraction has has 1341 places, 2844 transitions, 120887 flow [2022-12-06 17:35:52,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:52,538 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:52,538 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:52,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-06 17:35:52,538 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:35:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1431183606, now seen corresponding path program 23 times [2022-12-06 17:35:52,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:52,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301604788] [2022-12-06 17:35:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:52,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:53,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:53,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301604788] [2022-12-06 17:35:53,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301604788] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:35:53,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:35:53,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:35:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164886142] [2022-12-06 17:35:53,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:35:53,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:53,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:53,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:53,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:53,123 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:35:53,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1341 places, 2844 transitions, 120887 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:35:53,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:53,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:35:53,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:01,654 INFO L130 PetriNetUnfolder]: 8477/23560 cut-off events. [2022-12-06 17:36:01,654 INFO L131 PetriNetUnfolder]: For 1057524/1068304 co-relation queries the response was YES. [2022-12-06 17:36:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349294 conditions, 23560 events. 8477/23560 cut-off events. For 1057524/1068304 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 235830 event pairs, 1184 based on Foata normal form. 167/22170 useless extension candidates. Maximal degree in co-relation 328945. Up to 10496 conditions per place. [2022-12-06 17:36:02,042 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1932 selfloop transitions, 515 changer transitions 525/3210 dead transitions. [2022-12-06 17:36:02,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1393 places, 3210 transitions, 143737 flow [2022-12-06 17:36:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-06 17:36:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-06 17:36:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 11158 transitions. [2022-12-06 17:36:02,048 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6265723270440252 [2022-12-06 17:36:02,048 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1088 predicate places. [2022-12-06 17:36:02,048 INFO L495 AbstractCegarLoop]: Abstraction has has 1393 places, 3210 transitions, 143737 flow [2022-12-06 17:36:02,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:02,049 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:02,049 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:02,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-06 17:36:02,049 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash 500601438, now seen corresponding path program 24 times [2022-12-06 17:36:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361415925] [2022-12-06 17:36:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:02,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361415925] [2022-12-06 17:36:02,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361415925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:36:02,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:36:02,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:36:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048899416] [2022-12-06 17:36:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:36:02,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:36:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:36:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:36:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:36:02,501 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:36:02,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1393 places, 3210 transitions, 143737 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:02,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:36:02,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:36:02,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:11,949 INFO L130 PetriNetUnfolder]: 8608/23939 cut-off events. [2022-12-06 17:36:11,949 INFO L131 PetriNetUnfolder]: For 1159217/1169566 co-relation queries the response was YES. [2022-12-06 17:36:11,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370045 conditions, 23939 events. 8608/23939 cut-off events. For 1159217/1169566 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 241191 event pairs, 1193 based on Foata normal form. 159/22529 useless extension candidates. Maximal degree in co-relation 346506. Up to 10612 conditions per place. [2022-12-06 17:36:12,362 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 2016 selfloop transitions, 525 changer transitions 551/3330 dead transitions. [2022-12-06 17:36:12,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1447 places, 3330 transitions, 155733 flow [2022-12-06 17:36:12,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-06 17:36:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-06 17:36:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 11588 transitions. [2022-12-06 17:36:12,368 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6270562770562771 [2022-12-06 17:36:12,368 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1142 predicate places. [2022-12-06 17:36:12,368 INFO L495 AbstractCegarLoop]: Abstraction has has 1447 places, 3330 transitions, 155733 flow [2022-12-06 17:36:12,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:12,369 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:12,369 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:12,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-06 17:36:12,369 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash -601905482, now seen corresponding path program 25 times [2022-12-06 17:36:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:12,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636121355] [2022-12-06 17:36:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:12,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:12,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:12,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636121355] [2022-12-06 17:36:12,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636121355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:36:12,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:36:12,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:36:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789072334] [2022-12-06 17:36:12,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:36:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:36:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:36:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:36:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:36:12,809 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:36:12,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1447 places, 3330 transitions, 155733 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:12,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:36:12,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:36:12,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:21,753 INFO L130 PetriNetUnfolder]: 8615/23931 cut-off events. [2022-12-06 17:36:21,753 INFO L131 PetriNetUnfolder]: For 1268189/1279276 co-relation queries the response was YES. [2022-12-06 17:36:21,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384985 conditions, 23931 events. 8615/23931 cut-off events. For 1268189/1279276 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 241382 event pairs, 1190 based on Foata normal form. 166/22534 useless extension candidates. Maximal degree in co-relation 374346. Up to 10612 conditions per place. [2022-12-06 17:36:22,189 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 2008 selfloop transitions, 536 changer transitions 569/3351 dead transitions. [2022-12-06 17:36:22,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1494 places, 3351 transitions, 163022 flow [2022-12-06 17:36:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:36:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:36:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10122 transitions. [2022-12-06 17:36:22,195 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6276041666666666 [2022-12-06 17:36:22,195 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1189 predicate places. [2022-12-06 17:36:22,195 INFO L495 AbstractCegarLoop]: Abstraction has has 1494 places, 3351 transitions, 163022 flow [2022-12-06 17:36:22,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:22,196 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:22,196 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:22,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-06 17:36:22,196 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash -316951500, now seen corresponding path program 26 times [2022-12-06 17:36:22,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:22,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629179429] [2022-12-06 17:36:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:22,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629179429] [2022-12-06 17:36:22,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629179429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:36:22,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:36:22,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:36:22,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122326626] [2022-12-06 17:36:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:36:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:36:22,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:36:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:36:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:36:22,606 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:36:22,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1494 places, 3351 transitions, 163022 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:22,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:36:22,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:36:22,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:31,938 INFO L130 PetriNetUnfolder]: 8614/23921 cut-off events. [2022-12-06 17:36:31,938 INFO L131 PetriNetUnfolder]: For 1377699/1389216 co-relation queries the response was YES. [2022-12-06 17:36:31,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399453 conditions, 23921 events. 8614/23921 cut-off events. For 1377699/1389216 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 240946 event pairs, 1190 based on Foata normal form. 173/22539 useless extension candidates. Maximal degree in co-relation 388287. Up to 10612 conditions per place. [2022-12-06 17:36:32,167 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 2002 selfloop transitions, 529 changer transitions 589/3358 dead transitions. [2022-12-06 17:36:32,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1537 places, 3358 transitions, 169630 flow [2022-12-06 17:36:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 17:36:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 17:36:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9330 transitions. [2022-12-06 17:36:32,172 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6310876623376623 [2022-12-06 17:36:32,172 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1232 predicate places. [2022-12-06 17:36:32,172 INFO L495 AbstractCegarLoop]: Abstraction has has 1537 places, 3358 transitions, 169630 flow [2022-12-06 17:36:32,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:32,173 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:32,173 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:32,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-06 17:36:32,173 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1222529396, now seen corresponding path program 27 times [2022-12-06 17:36:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:32,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203111573] [2022-12-06 17:36:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:32,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203111573] [2022-12-06 17:36:32,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203111573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:36:32,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:36:32,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:36:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612819777] [2022-12-06 17:36:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:36:32,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:36:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:36:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:36:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:36:32,640 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:36:32,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1537 places, 3358 transitions, 169630 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:32,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:36:32,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:36:32,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:43,379 INFO L130 PetriNetUnfolder]: 8648/24097 cut-off events. [2022-12-06 17:36:43,379 INFO L131 PetriNetUnfolder]: For 1499884/1512261 co-relation queries the response was YES. [2022-12-06 17:36:43,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416339 conditions, 24097 events. 8648/24097 cut-off events. For 1499884/1512261 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 243808 event pairs, 1188 based on Foata normal form. 178/22713 useless extension candidates. Maximal degree in co-relation 404524. Up to 10612 conditions per place. [2022-12-06 17:36:43,633 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1993 selfloop transitions, 527 changer transitions 643/3401 dead transitions. [2022-12-06 17:36:43,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1582 places, 3401 transitions, 178318 flow [2022-12-06 17:36:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-06 17:36:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-06 17:36:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 9754 transitions. [2022-12-06 17:36:43,638 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6310817805383023 [2022-12-06 17:36:43,638 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1277 predicate places. [2022-12-06 17:36:43,639 INFO L495 AbstractCegarLoop]: Abstraction has has 1582 places, 3401 transitions, 178318 flow [2022-12-06 17:36:43,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:43,639 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:43,639 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:43,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-06 17:36:43,639 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1190483792, now seen corresponding path program 28 times [2022-12-06 17:36:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882963369] [2022-12-06 17:36:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:44,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882963369] [2022-12-06 17:36:44,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882963369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:36:44,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:36:44,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:36:44,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412082465] [2022-12-06 17:36:44,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:36:44,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:36:44,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:36:44,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:36:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:36:44,092 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:36:44,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1582 places, 3401 transitions, 178318 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:44,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:36:44,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:36:44,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:36:54,476 INFO L130 PetriNetUnfolder]: 8706/24313 cut-off events. [2022-12-06 17:36:54,476 INFO L131 PetriNetUnfolder]: For 1623627/1636334 co-relation queries the response was YES. [2022-12-06 17:36:54,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434075 conditions, 24313 events. 8706/24313 cut-off events. For 1623627/1636334 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 246431 event pairs, 1189 based on Foata normal form. 149/22887 useless extension candidates. Maximal degree in co-relation 403973. Up to 10612 conditions per place. [2022-12-06 17:36:54,740 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 2017 selfloop transitions, 546 changer transitions 661/3462 dead transitions. [2022-12-06 17:36:54,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1633 places, 3462 transitions, 188195 flow [2022-12-06 17:36:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-06 17:36:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-06 17:36:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 10977 transitions. [2022-12-06 17:36:54,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6282623626373627 [2022-12-06 17:36:54,746 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1328 predicate places. [2022-12-06 17:36:54,746 INFO L495 AbstractCegarLoop]: Abstraction has has 1633 places, 3462 transitions, 188195 flow [2022-12-06 17:36:54,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:54,747 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:36:54,747 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:36:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-06 17:36:54,747 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:36:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:36:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1693146510, now seen corresponding path program 29 times [2022-12-06 17:36:54,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:36:54,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109910425] [2022-12-06 17:36:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:36:54,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:36:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:36:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:36:55,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:36:55,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109910425] [2022-12-06 17:36:55,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109910425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:36:55,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:36:55,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:36:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071074429] [2022-12-06 17:36:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:36:55,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:36:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:36:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:36:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:36:55,155 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:36:55,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1633 places, 3462 transitions, 188195 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:36:55,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:36:55,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:36:55,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:05,803 INFO L130 PetriNetUnfolder]: 8706/24306 cut-off events. [2022-12-06 17:37:05,804 INFO L131 PetriNetUnfolder]: For 1743323/1756572 co-relation queries the response was YES. [2022-12-06 17:37:05,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448538 conditions, 24306 events. 8706/24306 cut-off events. For 1743323/1756572 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 246482 event pairs, 1189 based on Foata normal form. 179/22915 useless extension candidates. Maximal degree in co-relation 417475. Up to 10612 conditions per place. [2022-12-06 17:37:06,064 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 2012 selfloop transitions, 532 changer transitions 679/3461 dead transitions. [2022-12-06 17:37:06,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1679 places, 3461 transitions, 194581 flow [2022-12-06 17:37:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:37:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:37:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 9930 transitions. [2022-12-06 17:37:06,071 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6287993920972644 [2022-12-06 17:37:06,072 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1374 predicate places. [2022-12-06 17:37:06,072 INFO L495 AbstractCegarLoop]: Abstraction has has 1679 places, 3461 transitions, 194581 flow [2022-12-06 17:37:06,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:06,073 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:06,073 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:06,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-06 17:37:06,073 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:37:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:06,073 INFO L85 PathProgramCache]: Analyzing trace with hash -64984444, now seen corresponding path program 30 times [2022-12-06 17:37:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:06,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582702701] [2022-12-06 17:37:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:06,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:06,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582702701] [2022-12-06 17:37:06,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582702701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:06,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:06,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:37:06,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526330849] [2022-12-06 17:37:06,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:06,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:06,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:06,466 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:37:06,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1679 places, 3461 transitions, 194581 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:06,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:06,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:37:06,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:16,865 INFO L130 PetriNetUnfolder]: 8705/24343 cut-off events. [2022-12-06 17:37:16,865 INFO L131 PetriNetUnfolder]: For 1878270/1891669 co-relation queries the response was YES. [2022-12-06 17:37:16,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463285 conditions, 24343 events. 8705/24343 cut-off events. For 1878270/1891669 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 246683 event pairs, 1210 based on Foata normal form. 173/22939 useless extension candidates. Maximal degree in co-relation 431039. Up to 10612 conditions per place. [2022-12-06 17:37:17,248 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1995 selfloop transitions, 536 changer transitions 699/3468 dead transitions. [2022-12-06 17:37:17,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1726 places, 3468 transitions, 201465 flow [2022-12-06 17:37:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:37:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:37:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10185 transitions. [2022-12-06 17:37:17,253 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6315104166666666 [2022-12-06 17:37:17,253 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1421 predicate places. [2022-12-06 17:37:17,253 INFO L495 AbstractCegarLoop]: Abstraction has has 1726 places, 3468 transitions, 201465 flow [2022-12-06 17:37:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:17,254 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:17,254 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:17,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-06 17:37:17,254 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:37:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -988436910, now seen corresponding path program 31 times [2022-12-06 17:37:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:17,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268272321] [2022-12-06 17:37:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:17,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268272321] [2022-12-06 17:37:17,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268272321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:17,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:17,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:37:17,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733347072] [2022-12-06 17:37:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:17,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:17,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:17,639 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:37:17,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1726 places, 3468 transitions, 201465 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:17,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:17,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:37:17,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:28,479 INFO L130 PetriNetUnfolder]: 8722/24442 cut-off events. [2022-12-06 17:37:28,480 INFO L131 PetriNetUnfolder]: For 2016777/2030370 co-relation queries the response was YES. [2022-12-06 17:37:28,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479283 conditions, 24442 events. 8722/24442 cut-off events. For 2016777/2030370 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 248514 event pairs, 1214 based on Foata normal form. 179/23040 useless extension candidates. Maximal degree in co-relation 444932. Up to 10612 conditions per place. [2022-12-06 17:37:28,879 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1995 selfloop transitions, 536 changer transitions 721/3490 dead transitions. [2022-12-06 17:37:28,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1779 places, 3490 transitions, 209352 flow [2022-12-06 17:37:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-06 17:37:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-06 17:37:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 11392 transitions. [2022-12-06 17:37:28,885 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6278659611992945 [2022-12-06 17:37:28,885 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1474 predicate places. [2022-12-06 17:37:28,885 INFO L495 AbstractCegarLoop]: Abstraction has has 1779 places, 3490 transitions, 209352 flow [2022-12-06 17:37:28,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:28,886 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:28,886 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:28,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-06 17:37:28,886 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:37:28,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash 910040360, now seen corresponding path program 32 times [2022-12-06 17:37:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:28,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381446876] [2022-12-06 17:37:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:29,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381446876] [2022-12-06 17:37:29,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381446876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:29,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:29,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:37:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305181201] [2022-12-06 17:37:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:29,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:29,301 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:37:29,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1779 places, 3490 transitions, 209352 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:29,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:29,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:37:29,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:41,681 INFO L130 PetriNetUnfolder]: 8738/24404 cut-off events. [2022-12-06 17:37:41,681 INFO L131 PetriNetUnfolder]: For 2152855/2167634 co-relation queries the response was YES. [2022-12-06 17:37:41,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495240 conditions, 24404 events. 8738/24404 cut-off events. For 2152855/2167634 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 248328 event pairs, 1189 based on Foata normal form. 156/22993 useless extension candidates. Maximal degree in co-relation 480772. Up to 10612 conditions per place. [2022-12-06 17:37:42,066 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1964 selfloop transitions, 582 changer transitions 739/3523 dead transitions. [2022-12-06 17:37:42,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1830 places, 3523 transitions, 218047 flow [2022-12-06 17:37:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-06 17:37:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-06 17:37:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 10967 transitions. [2022-12-06 17:37:42,071 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6276900183150184 [2022-12-06 17:37:42,072 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1525 predicate places. [2022-12-06 17:37:42,072 INFO L495 AbstractCegarLoop]: Abstraction has has 1830 places, 3523 transitions, 218047 flow [2022-12-06 17:37:42,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:42,073 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:42,073 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:42,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-06 17:37:42,073 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:37:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2038247668, now seen corresponding path program 33 times [2022-12-06 17:37:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:42,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615734706] [2022-12-06 17:37:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:42,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:42,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615734706] [2022-12-06 17:37:42,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615734706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:42,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:42,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:37:42,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801244451] [2022-12-06 17:37:42,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:42,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:42,463 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:37:42,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1830 places, 3523 transitions, 218047 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:42,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:42,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:37:42,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:54,147 INFO L130 PetriNetUnfolder]: 8742/24515 cut-off events. [2022-12-06 17:37:54,148 INFO L131 PetriNetUnfolder]: For 2307574/2322269 co-relation queries the response was YES. [2022-12-06 17:37:54,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510641 conditions, 24515 events. 8742/24515 cut-off events. For 2307574/2322269 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 249771 event pairs, 1211 based on Foata normal form. 165/23104 useless extension candidates. Maximal degree in co-relation 473459. Up to 10612 conditions per place. [2022-12-06 17:37:54,589 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1965 selfloop transitions, 583 changer transitions 756/3542 dead transitions. [2022-12-06 17:37:54,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1879 places, 3542 transitions, 225916 flow [2022-12-06 17:37:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:37:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:37:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 10571 transitions. [2022-12-06 17:37:54,595 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6292261904761904 [2022-12-06 17:37:54,595 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1574 predicate places. [2022-12-06 17:37:54,595 INFO L495 AbstractCegarLoop]: Abstraction has has 1879 places, 3542 transitions, 225916 flow [2022-12-06 17:37:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:54,596 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:37:54,596 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:37:54,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-06 17:37:54,596 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:37:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:37:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1756037218, now seen corresponding path program 34 times [2022-12-06 17:37:54,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:37:54,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062734574] [2022-12-06 17:37:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:37:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:37:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:37:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:37:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:37:54,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062734574] [2022-12-06 17:37:54,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062734574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:37:54,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:37:54,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:37:54,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451898704] [2022-12-06 17:37:54,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:37:54,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:37:54,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:37:54,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:37:54,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:37:54,976 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:37:54,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1879 places, 3542 transitions, 225916 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:37:54,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:37:54,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:37:54,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:38:06,675 INFO L130 PetriNetUnfolder]: 8745/24518 cut-off events. [2022-12-06 17:38:06,675 INFO L131 PetriNetUnfolder]: For 2428665/2444051 co-relation queries the response was YES. [2022-12-06 17:38:06,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525877 conditions, 24518 events. 8745/24518 cut-off events. For 2428665/2444051 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 249826 event pairs, 1193 based on Foata normal form. 142/23082 useless extension candidates. Maximal degree in co-relation 487159. Up to 10612 conditions per place. [2022-12-06 17:38:06,956 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1962 selfloop transitions, 578 changer transitions 777/3555 dead transitions. [2022-12-06 17:38:06,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1928 places, 3555 transitions, 233447 flow [2022-12-06 17:38:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:38:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:38:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 10570 transitions. [2022-12-06 17:38:06,961 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2022-12-06 17:38:06,962 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1623 predicate places. [2022-12-06 17:38:06,962 INFO L495 AbstractCegarLoop]: Abstraction has has 1928 places, 3555 transitions, 233447 flow [2022-12-06 17:38:06,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:06,963 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:38:06,963 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:38:06,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-06 17:38:06,963 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:38:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:38:06,963 INFO L85 PathProgramCache]: Analyzing trace with hash -616419726, now seen corresponding path program 35 times [2022-12-06 17:38:06,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:38:06,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236618669] [2022-12-06 17:38:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:06,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:38:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:38:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:38:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236618669] [2022-12-06 17:38:07,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236618669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:38:07,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:38:07,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:38:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469769923] [2022-12-06 17:38:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:38:07,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:38:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:38:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:38:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:38:07,377 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:38:07,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1928 places, 3555 transitions, 233447 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:07,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:38:07,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:38:07,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:38:18,912 INFO L130 PetriNetUnfolder]: 8744/24535 cut-off events. [2022-12-06 17:38:18,913 INFO L131 PetriNetUnfolder]: For 2597609/2613411 co-relation queries the response was YES. [2022-12-06 17:38:18,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540844 conditions, 24535 events. 8744/24535 cut-off events. For 2597609/2613411 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 250344 event pairs, 1193 based on Foata normal form. 145/23107 useless extension candidates. Maximal degree in co-relation 524561. Up to 10612 conditions per place. [2022-12-06 17:38:19,348 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1958 selfloop transitions, 569 changer transitions 799/3564 dead transitions. [2022-12-06 17:38:19,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1975 places, 3564 transitions, 240733 flow [2022-12-06 17:38:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:38:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:38:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10178 transitions. [2022-12-06 17:38:19,353 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6310763888888888 [2022-12-06 17:38:19,353 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1670 predicate places. [2022-12-06 17:38:19,354 INFO L495 AbstractCegarLoop]: Abstraction has has 1975 places, 3564 transitions, 240733 flow [2022-12-06 17:38:19,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:19,354 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:38:19,354 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:38:19,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-06 17:38:19,354 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:38:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:38:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1591318548, now seen corresponding path program 36 times [2022-12-06 17:38:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:38:19,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988733956] [2022-12-06 17:38:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:38:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:38:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:38:19,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988733956] [2022-12-06 17:38:19,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988733956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:38:19,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:38:19,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:38:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947929656] [2022-12-06 17:38:19,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:38:19,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:38:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:38:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:38:19,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:38:19,759 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:38:19,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1975 places, 3564 transitions, 240733 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:19,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:38:19,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:38:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:38:31,740 INFO L130 PetriNetUnfolder]: 8743/24581 cut-off events. [2022-12-06 17:38:31,741 INFO L131 PetriNetUnfolder]: For 2751258/2767572 co-relation queries the response was YES. [2022-12-06 17:38:31,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555786 conditions, 24581 events. 8743/24581 cut-off events. For 2751258/2767572 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 250785 event pairs, 1209 based on Foata normal form. 167/23173 useless extension candidates. Maximal degree in co-relation 514465. Up to 10612 conditions per place. [2022-12-06 17:38:32,168 INFO L137 encePairwiseOnDemand]: 290/336 looper letters, 1948 selfloop transitions, 566 changer transitions 819/3571 dead transitions. [2022-12-06 17:38:32,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2022 places, 3571 transitions, 247907 flow [2022-12-06 17:38:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:38:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:38:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10175 transitions. [2022-12-06 17:38:32,178 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.630890376984127 [2022-12-06 17:38:32,178 INFO L294 CegarLoopForPetriNet]: 305 programPoint places, 1717 predicate places. [2022-12-06 17:38:32,179 INFO L495 AbstractCegarLoop]: Abstraction has has 2022 places, 3571 transitions, 247907 flow [2022-12-06 17:38:32,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:32,179 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:38:32,180 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:38:32,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-06 17:38:32,180 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:38:32,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:38:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1487105396, now seen corresponding path program 37 times [2022-12-06 17:38:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:38:32,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88710796] [2022-12-06 17:38:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:38:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:38:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:38:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:38:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:38:32,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88710796] [2022-12-06 17:38:32,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88710796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:38:32,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:38:32,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-06 17:38:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781556241] [2022-12-06 17:38:32,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:38:32,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:38:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:38:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:38:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:38:32,596 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 336 [2022-12-06 17:38:32,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2022 places, 3571 transitions, 247907 flow. Second operand has 19 states, 19 states have (on average 198.73684210526315) internal successors, (3776), 19 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:38:32,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:38:32,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 336 [2022-12-06 17:38:32,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand