/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/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 21:31:13,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 21:31:13,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 21:31:13,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 21:31:13,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 21:31:13,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 21:31:13,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 21:31:13,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 21:31:13,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 21:31:13,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 21:31:13,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 21:31:13,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 21:31:13,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 21:31:13,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 21:31:13,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 21:31:13,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 21:31:13,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 21:31:13,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 21:31:13,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 21:31:13,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 21:31:13,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 21:31:13,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 21:31:13,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 21:31:13,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 21:31:13,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 21:31:13,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 21:31:13,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 21:31:13,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 21:31:13,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 21:31:13,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 21:31:13,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 21:31:13,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 21:31:13,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 21:31:13,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 21:31:13,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 21:31:13,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 21:31:13,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 21:31:13,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 21:31:13,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 21:31:13,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 21:31:13,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 21:31:13,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 21:31:13,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 21:31:13,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 21:31:13,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 21:31:13,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 21:31:13,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 21:31:13,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 21:31:13,912 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 21:31:13,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 21:31:13,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 21:31:13,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 21:31:13,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 21:31:13,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 21:31:13,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:31:13,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 21:31:13,914 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 21:31:13,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 21:31:14,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 21:31:14,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 21:31:14,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 21:31:14,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 21:31:14,167 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 21:31:14,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-12-11 21:31:15,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 21:31:15,328 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 21:31:15,328 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-12-11 21:31:15,365 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e0b6e69/80be04c9aefd4289805abffdf15f602f/FLAG21728bab6 [2022-12-11 21:31:15,676 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e0b6e69/80be04c9aefd4289805abffdf15f602f [2022-12-11 21:31:15,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 21:31:15,678 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 21:31:15,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 21:31:15,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 21:31:15,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 21:31:15,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb8a150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15, skipping insertion in model container [2022-12-11 21:31:15,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 21:31:15,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 21:31:15,820 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/chl-node-symm.wvr.c[3305,3318] [2022-12-11 21:31:15,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:31:15,834 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 21:31:15,849 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/chl-node-symm.wvr.c[3305,3318] [2022-12-11 21:31:15,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:31:15,863 INFO L208 MainTranslator]: Completed translation [2022-12-11 21:31:15,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15 WrapperNode [2022-12-11 21:31:15,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 21:31:15,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 21:31:15,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 21:31:15,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 21:31:15,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,897 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 282 [2022-12-11 21:31:15,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 21:31:15,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 21:31:15,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 21:31:15,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 21:31:15,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 21:31:15,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 21:31:15,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 21:31:15,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 21:31:15,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (1/1) ... [2022-12-11 21:31:15,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:31:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:31:15,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 21:31:15,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 21:31:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 21:31:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 21:31:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 21:31:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 21:31:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 21:31:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 21:31:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 21:31:16,018 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 21:31:16,164 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 21:31:16,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 21:31:16,511 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 21:31:16,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 21:31:16,518 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 21:31:16,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:31:16 BoogieIcfgContainer [2022-12-11 21:31:16,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 21:31:16,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 21:31:16,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 21:31:16,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 21:31:16,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 09:31:15" (1/3) ... [2022-12-11 21:31:16,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f72d0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:31:16, skipping insertion in model container [2022-12-11 21:31:16,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:31:15" (2/3) ... [2022-12-11 21:31:16,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f72d0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:31:16, skipping insertion in model container [2022-12-11 21:31:16,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:31:16" (3/3) ... [2022-12-11 21:31:16,525 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-12-11 21:31:16,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 21:31:16,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 21:31:16,537 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 21:31:16,608 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 21:31:16,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 331 transitions, 678 flow [2022-12-11 21:31:16,763 INFO L130 PetriNetUnfolder]: 28/329 cut-off events. [2022-12-11 21:31:16,763 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 21:31:16,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 329 events. 28/329 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 330 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-12-11 21:31:16,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 331 transitions, 678 flow [2022-12-11 21:31:16,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 321 transitions, 654 flow [2022-12-11 21:31:16,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 21:31:16,790 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;@5c979632, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 21:31:16,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 21:31:16,833 INFO L130 PetriNetUnfolder]: 28/320 cut-off events. [2022-12-11 21:31:16,833 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 21:31:16,833 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:16,834 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:16,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -729024585, now seen corresponding path program 1 times [2022-12-11 21:31:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:16,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400891065] [2022-12-11 21:31:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:16,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:31:17,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:17,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400891065] [2022-12-11 21:31:17,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400891065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:17,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:17,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 21:31:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510463515] [2022-12-11 21:31:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 21:31:17,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 21:31:17,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 21:31:17,303 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 331 [2022-12-11 21:31:17,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 321 transitions, 654 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:17,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:17,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 331 [2022-12-11 21:31:17,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:17,382 INFO L130 PetriNetUnfolder]: 19/406 cut-off events. [2022-12-11 21:31:17,382 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-11 21:31:17,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 406 events. 19/406 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 5 based on Foata normal form. 26/399 useless extension candidates. Maximal degree in co-relation 256. Up to 22 conditions per place. [2022-12-11 21:31:17,387 INFO L137 encePairwiseOnDemand]: 307/331 looper letters, 11 selfloop transitions, 3 changer transitions 12/304 dead transitions. [2022-12-11 21:31:17,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 304 transitions, 651 flow [2022-12-11 21:31:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 21:31:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 21:31:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2022-12-11 21:31:17,402 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9405840886203424 [2022-12-11 21:31:17,404 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 2 predicate places. [2022-12-11 21:31:17,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 304 transitions, 651 flow [2022-12-11 21:31:17,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 292 transitions, 627 flow [2022-12-11 21:31:17,409 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 292 transitions, 627 flow [2022-12-11 21:31:17,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:17,409 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:17,410 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 21:31:17,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1026743543, now seen corresponding path program 1 times [2022-12-11 21:31:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:17,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513125004] [2022-12-11 21:31:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:31:17,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:17,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513125004] [2022-12-11 21:31:17,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513125004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:17,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:17,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 21:31:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085812435] [2022-12-11 21:31:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:17,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 21:31:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 21:31:17,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 21:31:17,556 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 331 [2022-12-11 21:31:17,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 292 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:17,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:17,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 331 [2022-12-11 21:31:17,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:17,610 INFO L130 PetriNetUnfolder]: 28/455 cut-off events. [2022-12-11 21:31:17,610 INFO L131 PetriNetUnfolder]: For 81/85 co-relation queries the response was YES. [2022-12-11 21:31:17,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 455 events. 28/455 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1195 event pairs, 10 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 284. Up to 35 conditions per place. [2022-12-11 21:31:17,612 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 12 selfloop transitions, 3 changer transitions 0/295 dead transitions. [2022-12-11 21:31:17,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 295 transitions, 668 flow [2022-12-11 21:31:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 21:31:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 21:31:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 912 transitions. [2022-12-11 21:31:17,615 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.918429003021148 [2022-12-11 21:31:17,617 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, -8 predicate places. [2022-12-11 21:31:17,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 295 transitions, 668 flow [2022-12-11 21:31:17,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 295 transitions, 668 flow [2022-12-11 21:31:17,621 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 295 transitions, 668 flow [2022-12-11 21:31:17,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:17,625 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:17,626 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:17,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 21:31:17,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1812772881, now seen corresponding path program 1 times [2022-12-11 21:31:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:17,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766466011] [2022-12-11 21:31:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:31:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:18,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766466011] [2022-12-11 21:31:18,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766466011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:18,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:18,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 21:31:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860547205] [2022-12-11 21:31:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 21:31:18,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 21:31:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-11 21:31:18,021 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 331 [2022-12-11 21:31:18,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 295 transitions, 668 flow. Second operand has 8 states, 8 states have (on average 225.875) internal successors, (1807), 8 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:18,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:18,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 331 [2022-12-11 21:31:18,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:18,208 INFO L130 PetriNetUnfolder]: 47/587 cut-off events. [2022-12-11 21:31:18,208 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-11 21:31:18,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 587 events. 47/587 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2109 event pairs, 23 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 470. Up to 102 conditions per place. [2022-12-11 21:31:18,211 INFO L137 encePairwiseOnDemand]: 319/331 looper letters, 76 selfloop transitions, 11 changer transitions 0/299 dead transitions. [2022-12-11 21:31:18,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 299 transitions, 850 flow [2022-12-11 21:31:18,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 21:31:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 21:31:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2039 transitions. [2022-12-11 21:31:18,215 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.68445787176905 [2022-12-11 21:31:18,216 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 0 predicate places. [2022-12-11 21:31:18,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 299 transitions, 850 flow [2022-12-11 21:31:18,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 299 transitions, 850 flow [2022-12-11 21:31:18,218 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 299 transitions, 850 flow [2022-12-11 21:31:18,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 225.875) internal successors, (1807), 8 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:18,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:18,219 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 21:31:18,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash 987775366, now seen corresponding path program 1 times [2022-12-11 21:31:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:18,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429070149] [2022-12-11 21:31:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:31:18,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:18,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429070149] [2022-12-11 21:31:18,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429070149] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:31:18,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446904176] [2022-12-11 21:31:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:18,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:31:18,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:31:18,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 21:31:18,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 21:31:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:18,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 21:31:18,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:31:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:31:18,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 21:31:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:31:18,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446904176] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 21:31:18,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 21:31:18,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-11 21:31:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930419811] [2022-12-11 21:31:18,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:18,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 21:31:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 21:31:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:18,949 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 331 [2022-12-11 21:31:18,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 299 transitions, 850 flow. Second operand has 9 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:18,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:18,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 331 [2022-12-11 21:31:18,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:19,158 INFO L130 PetriNetUnfolder]: 47/588 cut-off events. [2022-12-11 21:31:19,158 INFO L131 PetriNetUnfolder]: For 324/336 co-relation queries the response was YES. [2022-12-11 21:31:19,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 588 events. 47/588 cut-off events. For 324/336 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2093 event pairs, 23 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 508. Up to 102 conditions per place. [2022-12-11 21:31:19,162 INFO L137 encePairwiseOnDemand]: 315/331 looper letters, 52 selfloop transitions, 15 changer transitions 0/300 dead transitions. [2022-12-11 21:31:19,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 300 transitions, 986 flow [2022-12-11 21:31:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 21:31:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 21:31:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2813 transitions. [2022-12-11 21:31:19,166 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7725899478165339 [2022-12-11 21:31:19,167 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 10 predicate places. [2022-12-11 21:31:19,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 300 transitions, 986 flow [2022-12-11 21:31:19,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 300 transitions, 986 flow [2022-12-11 21:31:19,169 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 986 flow [2022-12-11 21:31:19,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:19,171 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:19,171 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:19,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 21:31:19,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:31:19,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash -595051306, now seen corresponding path program 1 times [2022-12-11 21:31:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:19,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008147282] [2022-12-11 21:31:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:19,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 21:31:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:19,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008147282] [2022-12-11 21:31:19,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008147282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:19,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:19,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 21:31:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121138721] [2022-12-11 21:31:19,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:19,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 21:31:19,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 21:31:19,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-11 21:31:19,624 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 331 [2022-12-11 21:31:19,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 986 flow. Second operand has 8 states, 8 states have (on average 226.375) internal successors, (1811), 8 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:19,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:19,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 331 [2022-12-11 21:31:19,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:19,750 INFO L130 PetriNetUnfolder]: 71/647 cut-off events. [2022-12-11 21:31:19,750 INFO L131 PetriNetUnfolder]: For 665/784 co-relation queries the response was YES. [2022-12-11 21:31:19,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 647 events. 71/647 cut-off events. For 665/784 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2618 event pairs, 45 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 654. Up to 121 conditions per place. [2022-12-11 21:31:19,753 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 82 selfloop transitions, 9 changer transitions 0/304 dead transitions. [2022-12-11 21:31:19,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 304 transitions, 1192 flow [2022-12-11 21:31:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 21:31:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 21:31:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1822 transitions. [2022-12-11 21:31:19,756 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6880664652567976 [2022-12-11 21:31:19,756 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 17 predicate places. [2022-12-11 21:31:19,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 304 transitions, 1192 flow [2022-12-11 21:31:19,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 304 transitions, 1192 flow [2022-12-11 21:31:19,758 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 304 transitions, 1192 flow [2022-12-11 21:31:19,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 226.375) internal successors, (1811), 8 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:19,759 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:19,760 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:19,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 21:31:19,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1599503721, now seen corresponding path program 1 times [2022-12-11 21:31:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18776549] [2022-12-11 21:31:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 21:31:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18776549] [2022-12-11 21:31:19,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18776549] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 21:31:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119632350] [2022-12-11 21:31:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:19,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 21:31:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:31:19,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 21:31:19,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 21:31:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:20,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 21:31:20,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 21:31:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 21:31:20,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 21:31:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 21:31:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119632350] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 21:31:20,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 21:31:20,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-11 21:31:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033198915] [2022-12-11 21:31:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:20,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 21:31:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 21:31:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:20,323 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 331 [2022-12-11 21:31:20,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 304 transitions, 1192 flow. Second operand has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:20,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:20,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 331 [2022-12-11 21:31:20,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:20,521 INFO L130 PetriNetUnfolder]: 71/650 cut-off events. [2022-12-11 21:31:20,521 INFO L131 PetriNetUnfolder]: For 973/1128 co-relation queries the response was YES. [2022-12-11 21:31:20,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 650 events. 71/650 cut-off events. For 973/1128 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2596 event pairs, 48 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 704. Up to 121 conditions per place. [2022-12-11 21:31:20,524 INFO L137 encePairwiseOnDemand]: 315/331 looper letters, 56 selfloop transitions, 16 changer transitions 0/305 dead transitions. [2022-12-11 21:31:20,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 305 transitions, 1340 flow [2022-12-11 21:31:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 21:31:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 21:31:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3063 transitions. [2022-12-11 21:31:20,528 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7711480362537765 [2022-12-11 21:31:20,529 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 28 predicate places. [2022-12-11 21:31:20,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 305 transitions, 1340 flow [2022-12-11 21:31:20,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 305 transitions, 1340 flow [2022-12-11 21:31:20,531 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 305 transitions, 1340 flow [2022-12-11 21:31:20,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:20,532 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:20,533 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:20,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 21:31:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-11 21:31:20,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash -423982751, now seen corresponding path program 1 times [2022-12-11 21:31:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:20,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081632513] [2022-12-11 21:31:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:22,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:22,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081632513] [2022-12-11 21:31:22,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081632513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:22,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:22,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097213044] [2022-12-11 21:31:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:22,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:22,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:22,198 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:22,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 305 transitions, 1340 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:22,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:22,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:22,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:25,628 INFO L130 PetriNetUnfolder]: 1861/6873 cut-off events. [2022-12-11 21:31:25,628 INFO L131 PetriNetUnfolder]: For 6592/6627 co-relation queries the response was YES. [2022-12-11 21:31:25,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13818 conditions, 6873 events. 1861/6873 cut-off events. For 6592/6627 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 67707 event pairs, 610 based on Foata normal form. 1/6439 useless extension candidates. Maximal degree in co-relation 11577. Up to 1391 conditions per place. [2022-12-11 21:31:25,655 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 327 selfloop transitions, 36 changer transitions 25/575 dead transitions. [2022-12-11 21:31:25,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 575 transitions, 3412 flow [2022-12-11 21:31:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 21:31:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 21:31:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6085 transitions. [2022-12-11 21:31:25,665 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5930221226001364 [2022-12-11 21:31:25,665 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 58 predicate places. [2022-12-11 21:31:25,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 575 transitions, 3412 flow [2022-12-11 21:31:25,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 550 transitions, 3240 flow [2022-12-11 21:31:25,686 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 550 transitions, 3240 flow [2022-12-11 21:31:25,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:25,688 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:25,688 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:25,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 21:31:25,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash 172116523, now seen corresponding path program 2 times [2022-12-11 21:31:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:25,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379811436] [2022-12-11 21:31:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:26,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379811436] [2022-12-11 21:31:26,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379811436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:26,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:26,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215005398] [2022-12-11 21:31:26,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:26,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:26,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:26,886 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:26,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 550 transitions, 3240 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:26,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:26,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:30,071 INFO L130 PetriNetUnfolder]: 2593/9011 cut-off events. [2022-12-11 21:31:30,071 INFO L131 PetriNetUnfolder]: For 11531/13061 co-relation queries the response was YES. [2022-12-11 21:31:30,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22828 conditions, 9011 events. 2593/9011 cut-off events. For 11531/13061 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 92494 event pairs, 55 based on Foata normal form. 102/8623 useless extension candidates. Maximal degree in co-relation 19146. Up to 1804 conditions per place. [2022-12-11 21:31:30,125 INFO L137 encePairwiseOnDemand]: 310/331 looper letters, 801 selfloop transitions, 121 changer transitions 23/1132 dead transitions. [2022-12-11 21:31:30,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1132 transitions, 8690 flow [2022-12-11 21:31:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-11 21:31:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-11 21:31:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6657 transitions. [2022-12-11 21:31:30,136 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5915230140394526 [2022-12-11 21:31:30,138 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 83 predicate places. [2022-12-11 21:31:30,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 1132 transitions, 8690 flow [2022-12-11 21:31:30,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 1109 transitions, 8495 flow [2022-12-11 21:31:30,164 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1109 transitions, 8495 flow [2022-12-11 21:31:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:30,165 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:30,165 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:30,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 21:31:30,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1699683259, now seen corresponding path program 3 times [2022-12-11 21:31:30,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:30,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597822219] [2022-12-11 21:31:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:30,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:30,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597822219] [2022-12-11 21:31:30,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597822219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:30,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:30,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667195358] [2022-12-11 21:31:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:30,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:30,998 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:31,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1109 transitions, 8495 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:31,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:31,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:31,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:33,892 INFO L130 PetriNetUnfolder]: 3196/11251 cut-off events. [2022-12-11 21:31:33,892 INFO L131 PetriNetUnfolder]: For 19462/25458 co-relation queries the response was YES. [2022-12-11 21:31:33,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33731 conditions, 11251 events. 3196/11251 cut-off events. For 19462/25458 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 121602 event pairs, 112 based on Foata normal form. 476/11127 useless extension candidates. Maximal degree in co-relation 28323. Up to 2598 conditions per place. [2022-12-11 21:31:33,954 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1056 selfloop transitions, 141 changer transitions 23/1407 dead transitions. [2022-12-11 21:31:33,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 1407 transitions, 13448 flow [2022-12-11 21:31:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-11 21:31:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-11 21:31:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6671 transitions. [2022-12-11 21:31:33,960 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5927670161720278 [2022-12-11 21:31:33,960 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 108 predicate places. [2022-12-11 21:31:33,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 1407 transitions, 13448 flow [2022-12-11 21:31:34,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 1384 transitions, 13207 flow [2022-12-11 21:31:34,119 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 1384 transitions, 13207 flow [2022-12-11 21:31:34,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:34,127 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:34,127 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:34,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 21:31:34,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash -938488529, now seen corresponding path program 4 times [2022-12-11 21:31:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:34,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299922147] [2022-12-11 21:31:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:34,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:34,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299922147] [2022-12-11 21:31:34,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299922147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:34,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:34,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119339280] [2022-12-11 21:31:34,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:34,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:34,893 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:34,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 1384 transitions, 13207 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:34,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:34,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:34,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:38,406 INFO L130 PetriNetUnfolder]: 3280/12158 cut-off events. [2022-12-11 21:31:38,406 INFO L131 PetriNetUnfolder]: For 27460/38142 co-relation queries the response was YES. [2022-12-11 21:31:38,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41018 conditions, 12158 events. 3280/12158 cut-off events. For 27460/38142 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 135873 event pairs, 172 based on Foata normal form. 720/12216 useless extension candidates. Maximal degree in co-relation 34322. Up to 2804 conditions per place. [2022-12-11 21:31:38,462 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1132 selfloop transitions, 142 changer transitions 25/1486 dead transitions. [2022-12-11 21:31:38,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 1486 transitions, 16893 flow [2022-12-11 21:31:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-11 21:31:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-11 21:31:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6671 transitions. [2022-12-11 21:31:38,468 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5927670161720278 [2022-12-11 21:31:38,468 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 133 predicate places. [2022-12-11 21:31:38,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 433 places, 1486 transitions, 16893 flow [2022-12-11 21:31:38,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 1461 transitions, 16571 flow [2022-12-11 21:31:38,509 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 1461 transitions, 16571 flow [2022-12-11 21:31:38,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:38,510 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:38,510 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:38,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 21:31:38,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1969198521, now seen corresponding path program 5 times [2022-12-11 21:31:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:38,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096821503] [2022-12-11 21:31:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:39,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:39,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096821503] [2022-12-11 21:31:39,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096821503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:39,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:39,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645448268] [2022-12-11 21:31:39,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:39,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:39,402 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:39,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1461 transitions, 16571 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:39,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:39,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:39,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:42,455 INFO L130 PetriNetUnfolder]: 3309/12036 cut-off events. [2022-12-11 21:31:42,455 INFO L131 PetriNetUnfolder]: For 37265/56814 co-relation queries the response was YES. [2022-12-11 21:31:42,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46764 conditions, 12036 events. 3309/12036 cut-off events. For 37265/56814 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 133368 event pairs, 177 based on Foata normal form. 595/11961 useless extension candidates. Maximal degree in co-relation 39279. Up to 2821 conditions per place. [2022-12-11 21:31:42,528 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1143 selfloop transitions, 143 changer transitions 24/1497 dead transitions. [2022-12-11 21:31:42,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1497 transitions, 19638 flow [2022-12-11 21:31:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 21:31:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 21:31:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6094 transitions. [2022-12-11 21:31:42,533 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5938992300945327 [2022-12-11 21:31:42,533 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 155 predicate places. [2022-12-11 21:31:42,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 1497 transitions, 19638 flow [2022-12-11 21:31:42,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 1473 transitions, 19278 flow [2022-12-11 21:31:42,582 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 1473 transitions, 19278 flow [2022-12-11 21:31:42,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:42,583 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:42,583 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:42,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 21:31:42,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2056089937, now seen corresponding path program 6 times [2022-12-11 21:31:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:42,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238869601] [2022-12-11 21:31:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:43,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238869601] [2022-12-11 21:31:43,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238869601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:43,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:43,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19713967] [2022-12-11 21:31:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:43,262 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:43,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 1473 transitions, 19278 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:43,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:43,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:43,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:46,335 INFO L130 PetriNetUnfolder]: 3313/11920 cut-off events. [2022-12-11 21:31:46,336 INFO L131 PetriNetUnfolder]: For 46760/64054 co-relation queries the response was YES. [2022-12-11 21:31:46,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52199 conditions, 11920 events. 3313/11920 cut-off events. For 46760/64054 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 131454 event pairs, 56 based on Foata normal form. 802/12090 useless extension candidates. Maximal degree in co-relation 43985. Up to 2797 conditions per place. [2022-12-11 21:31:46,413 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1136 selfloop transitions, 137 changer transitions 24/1484 dead transitions. [2022-12-11 21:31:46,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1484 transitions, 22046 flow [2022-12-11 21:31:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-11 21:31:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-11 21:31:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5901 transitions. [2022-12-11 21:31:46,419 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5942598187311178 [2022-12-11 21:31:46,420 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 178 predicate places. [2022-12-11 21:31:46,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 1484 transitions, 22046 flow [2022-12-11 21:31:46,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 1460 transitions, 21653 flow [2022-12-11 21:31:46,472 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 1460 transitions, 21653 flow [2022-12-11 21:31:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:46,473 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:46,473 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 21:31:46,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 327723249, now seen corresponding path program 7 times [2022-12-11 21:31:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:46,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738108423] [2022-12-11 21:31:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738108423] [2022-12-11 21:31:47,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738108423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:47,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:47,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993217377] [2022-12-11 21:31:47,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:47,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:47,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:47,267 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:47,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1460 transitions, 21653 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:47,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:47,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:47,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:50,397 INFO L130 PetriNetUnfolder]: 3238/11665 cut-off events. [2022-12-11 21:31:50,398 INFO L131 PetriNetUnfolder]: For 59326/84827 co-relation queries the response was YES. [2022-12-11 21:31:50,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56942 conditions, 11665 events. 3238/11665 cut-off events. For 59326/84827 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 128366 event pairs, 100 based on Foata normal form. 892/11940 useless extension candidates. Maximal degree in co-relation 48037. Up to 2791 conditions per place. [2022-12-11 21:31:50,477 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1121 selfloop transitions, 146 changer transitions 22/1476 dead transitions. [2022-12-11 21:31:50,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1476 transitions, 24512 flow [2022-12-11 21:31:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 21:31:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 21:31:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6094 transitions. [2022-12-11 21:31:50,488 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5938992300945327 [2022-12-11 21:31:50,488 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 197 predicate places. [2022-12-11 21:31:50,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 497 places, 1476 transitions, 24512 flow [2022-12-11 21:31:50,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 491 places, 1454 transitions, 24103 flow [2022-12-11 21:31:50,539 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 1454 transitions, 24103 flow [2022-12-11 21:31:50,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:50,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:50,540 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:50,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 21:31:50,541 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -380343753, now seen corresponding path program 8 times [2022-12-11 21:31:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:50,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001071112] [2022-12-11 21:31:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:50,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:51,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:51,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001071112] [2022-12-11 21:31:51,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001071112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:51,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:51,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813701808] [2022-12-11 21:31:51,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:51,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:51,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:51,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:51,497 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:51,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1454 transitions, 24103 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:51,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:51,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:51,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:54,651 INFO L130 PetriNetUnfolder]: 3286/11722 cut-off events. [2022-12-11 21:31:54,652 INFO L131 PetriNetUnfolder]: For 74206/112787 co-relation queries the response was YES. [2022-12-11 21:31:54,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62774 conditions, 11722 events. 3286/11722 cut-off events. For 74206/112787 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 128658 event pairs, 56 based on Foata normal form. 783/11879 useless extension candidates. Maximal degree in co-relation 53250. Up to 2750 conditions per place. [2022-12-11 21:31:54,733 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1101 selfloop transitions, 139 changer transitions 26/1453 dead transitions. [2022-12-11 21:31:54,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1453 transitions, 26615 flow [2022-12-11 21:31:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-11 21:31:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-11 21:31:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5907 transitions. [2022-12-11 21:31:54,738 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5948640483383686 [2022-12-11 21:31:54,738 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 220 predicate places. [2022-12-11 21:31:54,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 520 places, 1453 transitions, 26615 flow [2022-12-11 21:31:54,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 509 places, 1427 transitions, 26075 flow [2022-12-11 21:31:54,791 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 1427 transitions, 26075 flow [2022-12-11 21:31:54,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:54,792 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:54,793 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 21:31:54,793 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash -714353553, now seen corresponding path program 9 times [2022-12-11 21:31:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:54,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193053525] [2022-12-11 21:31:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:31:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:31:55,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:31:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193053525] [2022-12-11 21:31:55,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193053525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:31:55,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:31:55,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:31:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163884090] [2022-12-11 21:31:55,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:31:55,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:31:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:31:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:31:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:31:55,704 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:31:55,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 1427 transitions, 26075 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:55,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:31:55,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:31:55,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:31:59,080 INFO L130 PetriNetUnfolder]: 3337/11991 cut-off events. [2022-12-11 21:31:59,081 INFO L131 PetriNetUnfolder]: For 94935/130588 co-relation queries the response was YES. [2022-12-11 21:31:59,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69907 conditions, 11991 events. 3337/11991 cut-off events. For 94935/130588 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 132670 event pairs, 50 based on Foata normal form. 809/12171 useless extension candidates. Maximal degree in co-relation 58869. Up to 2868 conditions per place. [2022-12-11 21:31:59,161 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1154 selfloop transitions, 138 changer transitions 25/1504 dead transitions. [2022-12-11 21:31:59,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 1504 transitions, 30305 flow [2022-12-11 21:31:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 21:31:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 21:31:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5343 transitions. [2022-12-11 21:31:59,165 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5978516280631084 [2022-12-11 21:31:59,165 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 235 predicate places. [2022-12-11 21:31:59,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 1504 transitions, 30305 flow [2022-12-11 21:31:59,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 530 places, 1479 transitions, 29733 flow [2022-12-11 21:31:59,221 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 1479 transitions, 29733 flow [2022-12-11 21:31:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:31:59,222 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:31:59,222 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:31:59,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 21:31:59,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:31:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:31:59,223 INFO L85 PathProgramCache]: Analyzing trace with hash 947055399, now seen corresponding path program 10 times [2022-12-11 21:31:59,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:31:59,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749079337] [2022-12-11 21:31:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:31:59,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:31:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:00,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749079337] [2022-12-11 21:32:00,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749079337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:00,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:00,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400691345] [2022-12-11 21:32:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:00,091 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:00,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1479 transitions, 29733 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:00,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:00,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:00,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:03,943 INFO L130 PetriNetUnfolder]: 3461/12698 cut-off events. [2022-12-11 21:32:03,943 INFO L131 PetriNetUnfolder]: For 119693/157218 co-relation queries the response was YES. [2022-12-11 21:32:03,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78806 conditions, 12698 events. 3461/12698 cut-off events. For 119693/157218 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 142652 event pairs, 122 based on Foata normal form. 651/12660 useless extension candidates. Maximal degree in co-relation 66118. Up to 3060 conditions per place. [2022-12-11 21:32:04,027 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1214 selfloop transitions, 145 changer transitions 25/1571 dead transitions. [2022-12-11 21:32:04,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1571 transitions, 34598 flow [2022-12-11 21:32:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 21:32:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 21:32:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6100 transitions. [2022-12-11 21:32:04,031 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5944839684241302 [2022-12-11 21:32:04,031 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 260 predicate places. [2022-12-11 21:32:04,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 560 places, 1571 transitions, 34598 flow [2022-12-11 21:32:04,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 552 places, 1546 transitions, 33976 flow [2022-12-11 21:32:04,097 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 1546 transitions, 33976 flow [2022-12-11 21:32:04,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:04,098 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:04,098 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 21:32:04,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1628865665, now seen corresponding path program 11 times [2022-12-11 21:32:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:04,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64475841] [2022-12-11 21:32:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:04,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64475841] [2022-12-11 21:32:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64475841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:05,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:05,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147093575] [2022-12-11 21:32:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:05,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:05,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:05,045 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:05,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 1546 transitions, 33976 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:05,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:05,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:05,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:08,554 INFO L130 PetriNetUnfolder]: 3444/12609 cut-off events. [2022-12-11 21:32:08,555 INFO L131 PetriNetUnfolder]: For 140683/181218 co-relation queries the response was YES. [2022-12-11 21:32:08,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84472 conditions, 12609 events. 3444/12609 cut-off events. For 140683/181218 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 141525 event pairs, 123 based on Foata normal form. 683/12615 useless extension candidates. Maximal degree in co-relation 71035. Up to 3067 conditions per place. [2022-12-11 21:32:08,651 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1210 selfloop transitions, 143 changer transitions 22/1562 dead transitions. [2022-12-11 21:32:08,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1562 transitions, 37135 flow [2022-12-11 21:32:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 21:32:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 21:32:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5332 transitions. [2022-12-11 21:32:08,654 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5966207899742643 [2022-12-11 21:32:08,655 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 278 predicate places. [2022-12-11 21:32:08,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 578 places, 1562 transitions, 37135 flow [2022-12-11 21:32:08,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 573 places, 1540 transitions, 36550 flow [2022-12-11 21:32:08,721 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 1540 transitions, 36550 flow [2022-12-11 21:32:08,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:08,722 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:08,722 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:08,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-11 21:32:08,722 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -524691339, now seen corresponding path program 12 times [2022-12-11 21:32:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:08,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843313602] [2022-12-11 21:32:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:09,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:09,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843313602] [2022-12-11 21:32:09,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843313602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:09,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:09,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495016171] [2022-12-11 21:32:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:09,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:09,574 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:09,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 1540 transitions, 36550 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:09,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:09,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:09,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:13,462 INFO L130 PetriNetUnfolder]: 3440/12478 cut-off events. [2022-12-11 21:32:13,462 INFO L131 PetriNetUnfolder]: For 168446/221457 co-relation queries the response was YES. [2022-12-11 21:32:13,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89849 conditions, 12478 events. 3440/12478 cut-off events. For 168446/221457 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 139453 event pairs, 134 based on Foata normal form. 683/12496 useless extension candidates. Maximal degree in co-relation 75720. Up to 3013 conditions per place. [2022-12-11 21:32:13,546 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1189 selfloop transitions, 137 changer transitions 26/1539 dead transitions. [2022-12-11 21:32:13,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 1539 transitions, 39226 flow [2022-12-11 21:32:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 21:32:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 21:32:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5517 transitions. [2022-12-11 21:32:13,553 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5952740612861459 [2022-12-11 21:32:13,554 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 300 predicate places. [2022-12-11 21:32:13,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 600 places, 1539 transitions, 39226 flow [2022-12-11 21:32:13,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 588 places, 1513 transitions, 38478 flow [2022-12-11 21:32:13,620 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 1513 transitions, 38478 flow [2022-12-11 21:32:13,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:13,621 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:13,621 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:13,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-11 21:32:13,621 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash 188844463, now seen corresponding path program 13 times [2022-12-11 21:32:13,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:13,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975271054] [2022-12-11 21:32:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:14,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975271054] [2022-12-11 21:32:14,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975271054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:14,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:14,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835594305] [2022-12-11 21:32:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:14,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:14,351 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:14,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 1513 transitions, 38478 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:14,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:14,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:14,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:18,567 INFO L130 PetriNetUnfolder]: 3620/13213 cut-off events. [2022-12-11 21:32:18,567 INFO L131 PetriNetUnfolder]: For 197762/267349 co-relation queries the response was YES. [2022-12-11 21:32:18,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100706 conditions, 13213 events. 3620/13213 cut-off events. For 197762/267349 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 149453 event pairs, 137 based on Foata normal form. 709/13207 useless extension candidates. Maximal degree in co-relation 84749. Up to 3254 conditions per place. [2022-12-11 21:32:18,685 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1289 selfloop transitions, 143 changer transitions 25/1644 dead transitions. [2022-12-11 21:32:18,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 1644 transitions, 45048 flow [2022-12-11 21:32:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 21:32:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 21:32:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6099 transitions. [2022-12-11 21:32:18,688 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5943865120358639 [2022-12-11 21:32:18,688 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 318 predicate places. [2022-12-11 21:32:18,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 618 places, 1644 transitions, 45048 flow [2022-12-11 21:32:18,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 610 places, 1619 transitions, 44276 flow [2022-12-11 21:32:18,767 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 1619 transitions, 44276 flow [2022-12-11 21:32:18,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:18,767 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:18,767 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-11 21:32:18,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash 122987495, now seen corresponding path program 14 times [2022-12-11 21:32:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:18,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839866448] [2022-12-11 21:32:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:19,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839866448] [2022-12-11 21:32:19,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839866448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:19,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:19,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:19,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860673668] [2022-12-11 21:32:19,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:19,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:19,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:19,600 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:19,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 1619 transitions, 44276 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:19,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:19,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:19,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:24,030 INFO L130 PetriNetUnfolder]: 3637/13417 cut-off events. [2022-12-11 21:32:24,030 INFO L131 PetriNetUnfolder]: For 233941/318198 co-relation queries the response was YES. [2022-12-11 21:32:24,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108371 conditions, 13417 events. 3637/13417 cut-off events. For 233941/318198 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 153421 event pairs, 90 based on Foata normal form. 747/13448 useless extension candidates. Maximal degree in co-relation 90433. Up to 3373 conditions per place. [2022-12-11 21:32:24,146 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1332 selfloop transitions, 149 changer transitions 25/1693 dead transitions. [2022-12-11 21:32:24,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 1693 transitions, 49601 flow [2022-12-11 21:32:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-11 21:32:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-11 21:32:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5916 transitions. [2022-12-11 21:32:24,149 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5957703927492447 [2022-12-11 21:32:24,149 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 339 predicate places. [2022-12-11 21:32:24,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 639 places, 1693 transitions, 49601 flow [2022-12-11 21:32:24,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 631 places, 1668 transitions, 48779 flow [2022-12-11 21:32:24,241 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 1668 transitions, 48779 flow [2022-12-11 21:32:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:24,241 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:24,241 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:24,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-11 21:32:24,242 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1210902279, now seen corresponding path program 15 times [2022-12-11 21:32:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:24,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246048314] [2022-12-11 21:32:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:24,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:24,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:24,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246048314] [2022-12-11 21:32:24,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246048314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:24,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:24,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:24,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196061735] [2022-12-11 21:32:24,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:24,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:24,996 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:24,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 1668 transitions, 48779 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:24,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:24,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:24,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:29,820 INFO L130 PetriNetUnfolder]: 3696/13898 cut-off events. [2022-12-11 21:32:29,820 INFO L131 PetriNetUnfolder]: For 273788/356399 co-relation queries the response was YES. [2022-12-11 21:32:29,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117040 conditions, 13898 events. 3696/13898 cut-off events. For 273788/356399 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 160539 event pairs, 140 based on Foata normal form. 697/13839 useless extension candidates. Maximal degree in co-relation 96993. Up to 3427 conditions per place. [2022-12-11 21:32:29,930 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1352 selfloop transitions, 152 changer transitions 25/1716 dead transitions. [2022-12-11 21:32:29,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 1716 transitions, 53490 flow [2022-12-11 21:32:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-11 21:32:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-11 21:32:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6679 transitions. [2022-12-11 21:32:29,933 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5934778745334992 [2022-12-11 21:32:29,934 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 364 predicate places. [2022-12-11 21:32:29,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 664 places, 1716 transitions, 53490 flow [2022-12-11 21:32:30,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 656 places, 1691 transitions, 52618 flow [2022-12-11 21:32:30,022 INFO L495 AbstractCegarLoop]: Abstraction has has 656 places, 1691 transitions, 52618 flow [2022-12-11 21:32:30,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:30,023 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:30,023 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:30,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-11 21:32:30,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 823379131, now seen corresponding path program 16 times [2022-12-11 21:32:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639368444] [2022-12-11 21:32:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:30,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639368444] [2022-12-11 21:32:30,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639368444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:30,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:30,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:30,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546968303] [2022-12-11 21:32:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:30,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:30,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:30,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:30,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:30,863 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:30,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 1691 transitions, 52618 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:30,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:30,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:30,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:35,335 INFO L130 PetriNetUnfolder]: 3714/13682 cut-off events. [2022-12-11 21:32:35,335 INFO L131 PetriNetUnfolder]: For 302955/393447 co-relation queries the response was YES. [2022-12-11 21:32:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123326 conditions, 13682 events. 3714/13682 cut-off events. For 302955/393447 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 156645 event pairs, 107 based on Foata normal form. 695/13639 useless extension candidates. Maximal degree in co-relation 102328. Up to 3429 conditions per place. [2022-12-11 21:32:35,455 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1353 selfloop transitions, 145 changer transitions 22/1707 dead transitions. [2022-12-11 21:32:35,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 1707 transitions, 56227 flow [2022-12-11 21:32:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 21:32:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 21:32:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5335 transitions. [2022-12-11 21:32:35,458 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5969564730894036 [2022-12-11 21:32:35,458 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 382 predicate places. [2022-12-11 21:32:35,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 682 places, 1707 transitions, 56227 flow [2022-12-11 21:32:35,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 677 places, 1685 transitions, 55422 flow [2022-12-11 21:32:35,548 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 1685 transitions, 55422 flow [2022-12-11 21:32:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:35,549 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:35,549 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:35,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-11 21:32:35,549 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:35,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash -172538663, now seen corresponding path program 17 times [2022-12-11 21:32:35,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:35,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175006397] [2022-12-11 21:32:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:36,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:36,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175006397] [2022-12-11 21:32:36,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175006397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:36,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:36,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:36,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884692270] [2022-12-11 21:32:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:36,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:36,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:36,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:36,300 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:36,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 1685 transitions, 55422 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:36,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:36,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:36,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:40,791 INFO L130 PetriNetUnfolder]: 3677/13755 cut-off events. [2022-12-11 21:32:40,791 INFO L131 PetriNetUnfolder]: For 345571/451373 co-relation queries the response was YES. [2022-12-11 21:32:41,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128689 conditions, 13755 events. 3677/13755 cut-off events. For 345571/451373 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 158224 event pairs, 171 based on Foata normal form. 543/13528 useless extension candidates. Maximal degree in co-relation 106995. Up to 3399 conditions per place. [2022-12-11 21:32:41,098 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1332 selfloop transitions, 139 changer transitions 26/1684 dead transitions. [2022-12-11 21:32:41,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 704 places, 1684 transitions, 58378 flow [2022-12-11 21:32:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 21:32:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 21:32:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5520 transitions. [2022-12-11 21:32:41,102 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5955977557186016 [2022-12-11 21:32:41,102 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 404 predicate places. [2022-12-11 21:32:41,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 704 places, 1684 transitions, 58378 flow [2022-12-11 21:32:41,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 692 places, 1658 transitions, 57370 flow [2022-12-11 21:32:41,196 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 1658 transitions, 57370 flow [2022-12-11 21:32:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:41,196 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:41,196 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:41,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-11 21:32:41,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash 814988005, now seen corresponding path program 18 times [2022-12-11 21:32:41,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:41,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164876220] [2022-12-11 21:32:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:41,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164876220] [2022-12-11 21:32:41,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164876220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:41,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:41,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212069441] [2022-12-11 21:32:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:41,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:41,858 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:41,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 1658 transitions, 57370 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:41,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:41,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:41,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:47,266 INFO L130 PetriNetUnfolder]: 3907/14770 cut-off events. [2022-12-11 21:32:47,267 INFO L131 PetriNetUnfolder]: For 424165/522137 co-relation queries the response was YES. [2022-12-11 21:32:47,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144547 conditions, 14770 events. 3907/14770 cut-off events. For 424165/522137 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 173242 event pairs, 124 based on Foata normal form. 333/14306 useless extension candidates. Maximal degree in co-relation 118927. Up to 3963 conditions per place. [2022-12-11 21:32:47,406 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1511 selfloop transitions, 144 changer transitions 25/1867 dead transitions. [2022-12-11 21:32:47,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 1867 transitions, 68726 flow [2022-12-11 21:32:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-11 21:32:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-11 21:32:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6083 transitions. [2022-12-11 21:32:47,409 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5928272098236039 [2022-12-11 21:32:47,409 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 422 predicate places. [2022-12-11 21:32:47,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 722 places, 1867 transitions, 68726 flow [2022-12-11 21:32:47,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 714 places, 1842 transitions, 67704 flow [2022-12-11 21:32:47,681 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 1842 transitions, 67704 flow [2022-12-11 21:32:47,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:47,682 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:47,682 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:47,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-11 21:32:47,683 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1613142331, now seen corresponding path program 19 times [2022-12-11 21:32:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67620107] [2022-12-11 21:32:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:47,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:48,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67620107] [2022-12-11 21:32:48,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67620107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:48,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:48,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:48,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37600886] [2022-12-11 21:32:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:48,422 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:48,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 1842 transitions, 67704 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:48,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:48,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:48,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:32:53,961 INFO L130 PetriNetUnfolder]: 4021/15053 cut-off events. [2022-12-11 21:32:53,961 INFO L131 PetriNetUnfolder]: For 476431/611037 co-relation queries the response was YES. [2022-12-11 21:32:54,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155663 conditions, 15053 events. 4021/15053 cut-off events. For 476431/611037 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 176801 event pairs, 126 based on Foata normal form. 455/14702 useless extension candidates. Maximal degree in co-relation 127213. Up to 4243 conditions per place. [2022-12-11 21:32:54,089 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1559 selfloop transitions, 152 changer transitions 25/1923 dead transitions. [2022-12-11 21:32:54,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 1923 transitions, 74510 flow [2022-12-11 21:32:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 21:32:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 21:32:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5307 transitions. [2022-12-11 21:32:54,092 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5938234306814367 [2022-12-11 21:32:54,093 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 440 predicate places. [2022-12-11 21:32:54,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 740 places, 1923 transitions, 74510 flow [2022-12-11 21:32:54,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 732 places, 1898 transitions, 73438 flow [2022-12-11 21:32:54,202 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 1898 transitions, 73438 flow [2022-12-11 21:32:54,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:54,203 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:32:54,203 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:32:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-11 21:32:54,203 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:32:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:32:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash -447794257, now seen corresponding path program 20 times [2022-12-11 21:32:54,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:32:54,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940707267] [2022-12-11 21:32:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:32:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:32:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:32:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:32:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:32:54,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940707267] [2022-12-11 21:32:54,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940707267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:32:54,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:32:54,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:32:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836805308] [2022-12-11 21:32:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:32:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:32:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:32:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:32:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:32:54,889 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:32:54,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 1898 transitions, 73438 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:32:54,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:32:54,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:32:54,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:00,629 INFO L130 PetriNetUnfolder]: 4011/15390 cut-off events. [2022-12-11 21:33:00,629 INFO L131 PetriNetUnfolder]: For 513290/635648 co-relation queries the response was YES. [2022-12-11 21:33:00,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163866 conditions, 15390 events. 4011/15390 cut-off events. For 513290/635648 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 182816 event pairs, 149 based on Foata normal form. 462/15022 useless extension candidates. Maximal degree in co-relation 132855. Up to 4469 conditions per place. [2022-12-11 21:33:00,769 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1615 selfloop transitions, 123 changer transitions 25/1950 dead transitions. [2022-12-11 21:33:00,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 1950 transitions, 79272 flow [2022-12-11 21:33:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-11 21:33:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-11 21:33:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4740 transitions. [2022-12-11 21:33:00,772 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5966767371601208 [2022-12-11 21:33:00,772 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 455 predicate places. [2022-12-11 21:33:00,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 755 places, 1950 transitions, 79272 flow [2022-12-11 21:33:00,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 750 places, 1925 transitions, 78150 flow [2022-12-11 21:33:00,892 INFO L495 AbstractCegarLoop]: Abstraction has has 750 places, 1925 transitions, 78150 flow [2022-12-11 21:33:00,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:00,892 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:00,892 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-11 21:33:00,893 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1547285363, now seen corresponding path program 21 times [2022-12-11 21:33:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:00,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923715098] [2022-12-11 21:33:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:01,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:01,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923715098] [2022-12-11 21:33:01,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923715098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:01,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:01,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535814677] [2022-12-11 21:33:01,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:01,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:01,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:01,617 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:01,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 1925 transitions, 78150 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:01,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:01,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:01,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:07,742 INFO L130 PetriNetUnfolder]: 3996/15149 cut-off events. [2022-12-11 21:33:07,743 INFO L131 PetriNetUnfolder]: For 565156/707633 co-relation queries the response was YES. [2022-12-11 21:33:07,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169727 conditions, 15149 events. 3996/15149 cut-off events. For 565156/707633 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 178932 event pairs, 154 based on Foata normal form. 487/14820 useless extension candidates. Maximal degree in co-relation 137945. Up to 4468 conditions per place. [2022-12-11 21:33:07,875 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1568 selfloop transitions, 144 changer transitions 25/1924 dead transitions. [2022-12-11 21:33:07,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 1924 transitions, 81578 flow [2022-12-11 21:33:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-11 21:33:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-11 21:33:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5497 transitions. [2022-12-11 21:33:07,878 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5931160984031074 [2022-12-11 21:33:07,878 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 477 predicate places. [2022-12-11 21:33:07,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 777 places, 1924 transitions, 81578 flow [2022-12-11 21:33:07,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 769 places, 1899 transitions, 80406 flow [2022-12-11 21:33:07,990 INFO L495 AbstractCegarLoop]: Abstraction has has 769 places, 1899 transitions, 80406 flow [2022-12-11 21:33:07,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:07,991 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:07,992 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:07,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-11 21:33:07,992 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:07,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1005151981, now seen corresponding path program 22 times [2022-12-11 21:33:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:07,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401061553] [2022-12-11 21:33:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:08,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401061553] [2022-12-11 21:33:08,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401061553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:08,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:08,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126752635] [2022-12-11 21:33:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:08,773 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:08,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 1899 transitions, 80406 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:08,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:08,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:08,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:14,557 INFO L130 PetriNetUnfolder]: 4011/15367 cut-off events. [2022-12-11 21:33:14,557 INFO L131 PetriNetUnfolder]: For 639453/754186 co-relation queries the response was YES. [2022-12-11 21:33:14,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177304 conditions, 15367 events. 4011/15367 cut-off events. For 639453/754186 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 182266 event pairs, 183 based on Foata normal form. 423/14954 useless extension candidates. Maximal degree in co-relation 144363. Up to 4478 conditions per place. [2022-12-11 21:33:14,725 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1558 selfloop transitions, 146 changer transitions 24/1915 dead transitions. [2022-12-11 21:33:14,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 1915 transitions, 84623 flow [2022-12-11 21:33:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-11 21:33:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-11 21:33:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4915 transitions. [2022-12-11 21:33:14,728 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5939577039274925 [2022-12-11 21:33:14,729 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 493 predicate places. [2022-12-11 21:33:14,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 793 places, 1915 transitions, 84623 flow [2022-12-11 21:33:15,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 787 places, 1891 transitions, 83447 flow [2022-12-11 21:33:15,073 INFO L495 AbstractCegarLoop]: Abstraction has has 787 places, 1891 transitions, 83447 flow [2022-12-11 21:33:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:15,074 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:15,074 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:15,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-11 21:33:15,074 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1820181649, now seen corresponding path program 23 times [2022-12-11 21:33:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:15,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781516660] [2022-12-11 21:33:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:15,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:15,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781516660] [2022-12-11 21:33:15,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781516660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:15,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:15,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:15,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939421670] [2022-12-11 21:33:15,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:15,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:15,708 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:15,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 1891 transitions, 83447 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:15,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:15,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:15,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:21,710 INFO L130 PetriNetUnfolder]: 3994/15152 cut-off events. [2022-12-11 21:33:21,710 INFO L131 PetriNetUnfolder]: For 679919/843213 co-relation queries the response was YES. [2022-12-11 21:33:21,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183072 conditions, 15152 events. 3994/15152 cut-off events. For 679919/843213 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 178545 event pairs, 208 based on Foata normal form. 455/14779 useless extension candidates. Maximal degree in co-relation 149363. Up to 4441 conditions per place. [2022-12-11 21:33:21,860 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1540 selfloop transitions, 139 changer transitions 24/1890 dead transitions. [2022-12-11 21:33:21,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 1890 transitions, 86803 flow [2022-12-11 21:33:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-11 21:33:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-11 21:33:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4722 transitions. [2022-12-11 21:33:21,862 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5944108761329305 [2022-12-11 21:33:21,863 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 510 predicate places. [2022-12-11 21:33:21,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 810 places, 1890 transitions, 86803 flow [2022-12-11 21:33:21,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 799 places, 1866 transitions, 85594 flow [2022-12-11 21:33:21,990 INFO L495 AbstractCegarLoop]: Abstraction has has 799 places, 1866 transitions, 85594 flow [2022-12-11 21:33:21,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:21,990 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:21,991 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-11 21:33:21,991 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1101360073, now seen corresponding path program 24 times [2022-12-11 21:33:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:21,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880247424] [2022-12-11 21:33:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880247424] [2022-12-11 21:33:22,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880247424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:22,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:22,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:22,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904708011] [2022-12-11 21:33:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:22,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:22,778 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:22,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 1866 transitions, 85594 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:22,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:22,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:22,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:29,556 INFO L130 PetriNetUnfolder]: 4109/15529 cut-off events. [2022-12-11 21:33:29,556 INFO L131 PetriNetUnfolder]: For 782247/926159 co-relation queries the response was YES. [2022-12-11 21:33:29,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195082 conditions, 15529 events. 4109/15529 cut-off events. For 782247/926159 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 183760 event pairs, 210 based on Foata normal form. 435/15102 useless extension candidates. Maximal degree in co-relation 158280. Up to 4615 conditions per place. [2022-12-11 21:33:29,708 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1545 selfloop transitions, 187 changer transitions 25/1944 dead transitions. [2022-12-11 21:33:29,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 1944 transitions, 93085 flow [2022-12-11 21:33:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-11 21:33:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-11 21:33:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5867 transitions. [2022-12-11 21:33:29,711 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5908358509566969 [2022-12-11 21:33:29,712 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 528 predicate places. [2022-12-11 21:33:29,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 828 places, 1944 transitions, 93085 flow [2022-12-11 21:33:29,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 820 places, 1919 transitions, 91763 flow [2022-12-11 21:33:29,849 INFO L495 AbstractCegarLoop]: Abstraction has has 820 places, 1919 transitions, 91763 flow [2022-12-11 21:33:29,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:29,850 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:29,850 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:29,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-11 21:33:29,850 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1393844015, now seen corresponding path program 25 times [2022-12-11 21:33:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:29,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387746583] [2022-12-11 21:33:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:30,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387746583] [2022-12-11 21:33:30,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387746583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:30,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:30,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882250394] [2022-12-11 21:33:30,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:30,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:30,785 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:30,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 1919 transitions, 91763 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:30,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:30,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:30,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:38,213 INFO L130 PetriNetUnfolder]: 4134/16067 cut-off events. [2022-12-11 21:33:38,213 INFO L131 PetriNetUnfolder]: For 801821/961380 co-relation queries the response was YES. [2022-12-11 21:33:38,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205168 conditions, 16067 events. 4134/16067 cut-off events. For 801821/961380 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 193029 event pairs, 137 based on Foata normal form. 453/15611 useless extension candidates. Maximal degree in co-relation 165621. Up to 4711 conditions per place. [2022-12-11 21:33:38,389 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1576 selfloop transitions, 195 changer transitions 25/1983 dead transitions. [2022-12-11 21:33:38,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 1983 transitions, 98750 flow [2022-12-11 21:33:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 21:33:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 21:33:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5713 transitions. [2022-12-11 21:33:38,393 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.595166163141994 [2022-12-11 21:33:38,393 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 548 predicate places. [2022-12-11 21:33:38,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 848 places, 1983 transitions, 98750 flow [2022-12-11 21:33:38,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 1958 transitions, 97378 flow [2022-12-11 21:33:38,534 INFO L495 AbstractCegarLoop]: Abstraction has has 840 places, 1958 transitions, 97378 flow [2022-12-11 21:33:38,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:38,535 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:38,535 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:38,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-11 21:33:38,535 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash -796961083, now seen corresponding path program 26 times [2022-12-11 21:33:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:38,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073863062] [2022-12-11 21:33:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:39,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:39,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073863062] [2022-12-11 21:33:39,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073863062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:39,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:39,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:39,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672244961] [2022-12-11 21:33:39,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:39,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:39,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:39,333 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:39,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 1958 transitions, 97378 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:39,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:39,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:39,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:46,527 INFO L130 PetriNetUnfolder]: 4195/16302 cut-off events. [2022-12-11 21:33:46,527 INFO L131 PetriNetUnfolder]: For 899753/1080439 co-relation queries the response was YES. [2022-12-11 21:33:46,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216230 conditions, 16302 events. 4195/16302 cut-off events. For 899753/1080439 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 196536 event pairs, 180 based on Foata normal form. 527/15905 useless extension candidates. Maximal degree in co-relation 173346. Up to 4843 conditions per place. [2022-12-11 21:33:46,707 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1621 selfloop transitions, 206 changer transitions 25/2039 dead transitions. [2022-12-11 21:33:46,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 2039 transitions, 105550 flow [2022-12-11 21:33:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 21:33:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 21:33:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5124 transitions. [2022-12-11 21:33:46,711 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5953985591447827 [2022-12-11 21:33:46,711 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 565 predicate places. [2022-12-11 21:33:46,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 865 places, 2039 transitions, 105550 flow [2022-12-11 21:33:46,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 857 places, 2014 transitions, 104128 flow [2022-12-11 21:33:46,989 INFO L495 AbstractCegarLoop]: Abstraction has has 857 places, 2014 transitions, 104128 flow [2022-12-11 21:33:46,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:46,990 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:46,990 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:46,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-11 21:33:46,990 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash 621576149, now seen corresponding path program 27 times [2022-12-11 21:33:46,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:46,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111093509] [2022-12-11 21:33:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:46,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:47,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:47,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111093509] [2022-12-11 21:33:47,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111093509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:47,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:47,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347793091] [2022-12-11 21:33:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:47,693 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:47,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 857 places, 2014 transitions, 104128 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:47,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:47,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:47,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:33:55,089 INFO L130 PetriNetUnfolder]: 4173/16142 cut-off events. [2022-12-11 21:33:55,089 INFO L131 PetriNetUnfolder]: For 977976/1134888 co-relation queries the response was YES. [2022-12-11 21:33:55,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222820 conditions, 16142 events. 4173/16142 cut-off events. For 977976/1134888 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 194366 event pairs, 155 based on Foata normal form. 480/15748 useless extension candidates. Maximal degree in co-relation 178823. Up to 4822 conditions per place. [2022-12-11 21:33:55,278 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1612 selfloop transitions, 207 changer transitions 24/2030 dead transitions. [2022-12-11 21:33:55,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 2030 transitions, 108735 flow [2022-12-11 21:33:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-11 21:33:55,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-11 21:33:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4733 transitions. [2022-12-11 21:33:55,280 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5957955689828801 [2022-12-11 21:33:55,280 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 580 predicate places. [2022-12-11 21:33:55,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 880 places, 2030 transitions, 108735 flow [2022-12-11 21:33:55,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 874 places, 2006 transitions, 107319 flow [2022-12-11 21:33:55,435 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 2006 transitions, 107319 flow [2022-12-11 21:33:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:55,436 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:33:55,436 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:33:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-11 21:33:55,436 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:33:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:33:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1974013397, now seen corresponding path program 28 times [2022-12-11 21:33:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:33:55,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137496424] [2022-12-11 21:33:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:33:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:33:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:33:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:33:56,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:33:56,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137496424] [2022-12-11 21:33:56,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137496424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:33:56,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:33:56,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:33:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369705525] [2022-12-11 21:33:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:33:56,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:33:56,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:33:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:33:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:33:56,306 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:33:56,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 2006 transitions, 107319 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:33:56,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:33:56,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:33:56,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:34:03,586 INFO L130 PetriNetUnfolder]: 4222/16406 cut-off events. [2022-12-11 21:34:03,586 INFO L131 PetriNetUnfolder]: For 1109830/1302086 co-relation queries the response was YES. [2022-12-11 21:34:03,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230733 conditions, 16406 events. 4222/16406 cut-off events. For 1109830/1302086 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 197603 event pairs, 170 based on Foata normal form. 292/15741 useless extension candidates. Maximal degree in co-relation 185828. Up to 4833 conditions per place. [2022-12-11 21:34:03,778 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1593 selfloop transitions, 201 changer transitions 24/2005 dead transitions. [2022-12-11 21:34:03,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 2005 transitions, 110895 flow [2022-12-11 21:34:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-11 21:34:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-11 21:34:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4542 transitions. [2022-12-11 21:34:03,780 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.596611060028898 [2022-12-11 21:34:03,780 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 596 predicate places. [2022-12-11 21:34:03,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 896 places, 2005 transitions, 110895 flow [2022-12-11 21:34:03,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 889 places, 1981 transitions, 109446 flow [2022-12-11 21:34:03,948 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 1981 transitions, 109446 flow [2022-12-11 21:34:03,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:03,948 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:34:03,948 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:34:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-11 21:34:03,949 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:34:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:34:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -731104115, now seen corresponding path program 29 times [2022-12-11 21:34:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:34:03,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205841785] [2022-12-11 21:34:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:34:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:34:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:34:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:34:04,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:34:04,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205841785] [2022-12-11 21:34:04,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205841785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:34:04,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:34:04,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:34:04,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486254429] [2022-12-11 21:34:04,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:34:04,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:34:04,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:34:04,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:34:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:34:04,814 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:34:04,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 1981 transitions, 109446 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:04,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:34:04,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:34:04,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:34:12,489 INFO L130 PetriNetUnfolder]: 4151/15836 cut-off events. [2022-12-11 21:34:12,489 INFO L131 PetriNetUnfolder]: For 1123050/1307007 co-relation queries the response was YES. [2022-12-11 21:34:12,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235030 conditions, 15836 events. 4151/15836 cut-off events. For 1123050/1307007 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 189007 event pairs, 184 based on Foata normal form. 470/15431 useless extension candidates. Maximal degree in co-relation 189123. Up to 4751 conditions per place. [2022-12-11 21:34:12,670 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 1572 selfloop transitions, 196 changer transitions 25/1980 dead transitions. [2022-12-11 21:34:12,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 915 places, 1980 transitions, 112970 flow [2022-12-11 21:34:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 21:34:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 21:34:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5313 transitions. [2022-12-11 21:34:12,673 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5944947969117154 [2022-12-11 21:34:12,673 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 615 predicate places. [2022-12-11 21:34:12,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 915 places, 1980 transitions, 112970 flow [2022-12-11 21:34:12,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 903 places, 1955 transitions, 111398 flow [2022-12-11 21:34:12,885 INFO L495 AbstractCegarLoop]: Abstraction has has 903 places, 1955 transitions, 111398 flow [2022-12-11 21:34:12,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:12,885 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:34:12,885 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:34:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-11 21:34:12,885 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:34:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:34:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 662000905, now seen corresponding path program 30 times [2022-12-11 21:34:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:34:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217244310] [2022-12-11 21:34:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:34:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:34:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:34:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:34:13,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:34:13,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217244310] [2022-12-11 21:34:13,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217244310] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:34:13,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:34:13,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:34:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252075077] [2022-12-11 21:34:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:34:13,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:34:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:34:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:34:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:34:13,509 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:34:13,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 903 places, 1955 transitions, 111398 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:13,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:34:13,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:34:13,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:34:22,625 INFO L130 PetriNetUnfolder]: 5380/20644 cut-off events. [2022-12-11 21:34:22,625 INFO L131 PetriNetUnfolder]: For 1476840/1712649 co-relation queries the response was YES. [2022-12-11 21:34:22,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310305 conditions, 20644 events. 5380/20644 cut-off events. For 1476840/1712649 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 259288 event pairs, 320 based on Foata normal form. 374/19868 useless extension candidates. Maximal degree in co-relation 258163. Up to 6582 conditions per place. [2022-12-11 21:34:22,910 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 2057 selfloop transitions, 133 changer transitions 23/2400 dead transitions. [2022-12-11 21:34:22,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 2400 transitions, 143553 flow [2022-12-11 21:34:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 21:34:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 21:34:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6290 transitions. [2022-12-11 21:34:22,913 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5938444108761329 [2022-12-11 21:34:22,913 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 634 predicate places. [2022-12-11 21:34:22,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 934 places, 2400 transitions, 143553 flow [2022-12-11 21:34:23,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 926 places, 2377 transitions, 142070 flow [2022-12-11 21:34:23,123 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 2377 transitions, 142070 flow [2022-12-11 21:34:23,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:23,123 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:34:23,123 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:34:23,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-11 21:34:23,123 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:34:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:34:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2036416443, now seen corresponding path program 31 times [2022-12-11 21:34:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:34:23,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198230645] [2022-12-11 21:34:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:34:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:34:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:34:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:34:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:34:24,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198230645] [2022-12-11 21:34:24,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198230645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:34:24,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:34:24,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-11 21:34:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272458169] [2022-12-11 21:34:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:34:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-11 21:34:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:34:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-11 21:34:24,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-11 21:34:24,366 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2022-12-11 21:34:24,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 2377 transitions, 142070 flow. Second operand has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:24,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:34:24,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2022-12-11 21:34:24,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:34:36,637 INFO L130 PetriNetUnfolder]: 5543/21210 cut-off events. [2022-12-11 21:34:36,638 INFO L131 PetriNetUnfolder]: For 1648449/1868561 co-relation queries the response was YES. [2022-12-11 21:34:36,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330027 conditions, 21210 events. 5543/21210 cut-off events. For 1648449/1868561 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 267208 event pairs, 224 based on Foata normal form. 561/20574 useless extension candidates. Maximal degree in co-relation 266888. Up to 6529 conditions per place. [2022-12-11 21:34:36,906 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2151 selfloop transitions, 353 changer transitions 25/2694 dead transitions. [2022-12-11 21:34:36,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 971 places, 2694 transitions, 167532 flow [2022-12-11 21:34:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 21:34:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-11 21:34:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7743 transitions. [2022-12-11 21:34:36,910 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5085380270589781 [2022-12-11 21:34:36,910 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 671 predicate places. [2022-12-11 21:34:36,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 971 places, 2694 transitions, 167532 flow [2022-12-11 21:34:37,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 963 places, 2669 transitions, 165860 flow [2022-12-11 21:34:37,234 INFO L495 AbstractCegarLoop]: Abstraction has has 963 places, 2669 transitions, 165860 flow [2022-12-11 21:34:37,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:37,235 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:34:37,235 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:34:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-11 21:34:37,235 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:34:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:34:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 553021227, now seen corresponding path program 32 times [2022-12-11 21:34:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:34:37,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233523792] [2022-12-11 21:34:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:34:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:34:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:34:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:34:38,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:34:38,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233523792] [2022-12-11 21:34:38,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233523792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:34:38,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:34:38,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:34:38,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071418737] [2022-12-11 21:34:38,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:34:38,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:34:38,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:34:38,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:34:38,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:34:38,198 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:34:38,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 963 places, 2669 transitions, 165860 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:38,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:34:38,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:34:38,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:34:50,955 INFO L130 PetriNetUnfolder]: 6169/23683 cut-off events. [2022-12-11 21:34:50,955 INFO L131 PetriNetUnfolder]: For 1928374/2175465 co-relation queries the response was YES. [2022-12-11 21:34:51,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377750 conditions, 23683 events. 6169/23683 cut-off events. For 1928374/2175465 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 303562 event pairs, 429 based on Foata normal form. 1178/23563 useless extension candidates. Maximal degree in co-relation 307167. Up to 6696 conditions per place. [2022-12-11 21:34:51,399 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2448 selfloop transitions, 334 changer transitions 23/2967 dead transitions. [2022-12-11 21:34:51,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 2967 transitions, 191267 flow [2022-12-11 21:34:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-11 21:34:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-11 21:34:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8064 transitions. [2022-12-11 21:34:51,403 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49719464825205006 [2022-12-11 21:34:51,404 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 711 predicate places. [2022-12-11 21:34:51,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 1011 places, 2967 transitions, 191267 flow [2022-12-11 21:34:51,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1003 places, 2944 transitions, 189692 flow [2022-12-11 21:34:51,646 INFO L495 AbstractCegarLoop]: Abstraction has has 1003 places, 2944 transitions, 189692 flow [2022-12-11 21:34:51,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:51,647 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:34:51,647 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:34:51,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-11 21:34:51,647 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:34:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:34:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 632103831, now seen corresponding path program 33 times [2022-12-11 21:34:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:34:51,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348589231] [2022-12-11 21:34:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:34:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:34:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:34:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:34:52,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:34:52,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348589231] [2022-12-11 21:34:52,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348589231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:34:52,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:34:52,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:34:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532857442] [2022-12-11 21:34:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:34:52,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:34:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:34:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:34:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:34:52,765 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:34:52,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1003 places, 2944 transitions, 189692 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:34:52,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:34:52,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:34:52,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:35:07,175 INFO L130 PetriNetUnfolder]: 6215/24124 cut-off events. [2022-12-11 21:35:07,176 INFO L131 PetriNetUnfolder]: For 1910527/2040321 co-relation queries the response was YES. [2022-12-11 21:35:07,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394046 conditions, 24124 events. 6215/24124 cut-off events. For 1910527/2040321 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 311692 event pairs, 261 based on Foata normal form. 1446/24251 useless extension candidates. Maximal degree in co-relation 318840. Up to 6886 conditions per place. [2022-12-11 21:35:07,489 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2524 selfloop transitions, 335 changer transitions 25/3046 dead transitions. [2022-12-11 21:35:07,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1051 places, 3046 transitions, 202464 flow [2022-12-11 21:35:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-11 21:35:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-11 21:35:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8064 transitions. [2022-12-11 21:35:07,493 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49719464825205006 [2022-12-11 21:35:07,494 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 751 predicate places. [2022-12-11 21:35:07,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 1051 places, 3046 transitions, 202464 flow [2022-12-11 21:35:07,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1043 places, 3021 transitions, 200692 flow [2022-12-11 21:35:07,835 INFO L495 AbstractCegarLoop]: Abstraction has has 1043 places, 3021 transitions, 200692 flow [2022-12-11 21:35:07,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:07,836 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:35:07,836 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:35:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-11 21:35:07,836 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:35:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:35:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash 310517591, now seen corresponding path program 34 times [2022-12-11 21:35:07,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:35:07,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521012469] [2022-12-11 21:35:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:35:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:35:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:35:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:35:08,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:35:08,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521012469] [2022-12-11 21:35:08,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521012469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:35:08,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:35:08,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:35:08,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255691081] [2022-12-11 21:35:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:35:08,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:35:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:35:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:35:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:35:08,919 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:35:08,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 3021 transitions, 200692 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:08,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:35:08,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:35:08,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:35:22,903 INFO L130 PetriNetUnfolder]: 6293/24663 cut-off events. [2022-12-11 21:35:22,903 INFO L131 PetriNetUnfolder]: For 2012677/2125602 co-relation queries the response was YES. [2022-12-11 21:35:22,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408571 conditions, 24663 events. 6293/24663 cut-off events. For 2012677/2125602 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 320772 event pairs, 370 based on Foata normal form. 1216/24502 useless extension candidates. Maximal degree in co-relation 331675. Up to 6933 conditions per place. [2022-12-11 21:35:23,202 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2535 selfloop transitions, 334 changer transitions 22/3053 dead transitions. [2022-12-11 21:35:23,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 3053 transitions, 208707 flow [2022-12-11 21:35:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-11 21:35:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-11 21:35:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7410 transitions. [2022-12-11 21:35:23,206 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49748237663645517 [2022-12-11 21:35:23,215 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 787 predicate places. [2022-12-11 21:35:23,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 1087 places, 3053 transitions, 208707 flow [2022-12-11 21:35:23,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1082 places, 3031 transitions, 207110 flow [2022-12-11 21:35:23,598 INFO L495 AbstractCegarLoop]: Abstraction has has 1082 places, 3031 transitions, 207110 flow [2022-12-11 21:35:23,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:23,599 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:35:23,599 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:35:23,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-11 21:35:23,599 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:35:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:35:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash -363893109, now seen corresponding path program 35 times [2022-12-11 21:35:23,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:35:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800018287] [2022-12-11 21:35:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:35:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:35:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:35:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:35:24,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:35:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800018287] [2022-12-11 21:35:24,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800018287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:35:24,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:35:24,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:35:24,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704481279] [2022-12-11 21:35:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:35:24,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:35:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:35:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:35:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:35:24,810 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:35:24,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1082 places, 3031 transitions, 207110 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:24,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:35:24,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:35:24,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:35:39,073 INFO L130 PetriNetUnfolder]: 6223/24065 cut-off events. [2022-12-11 21:35:39,074 INFO L131 PetriNetUnfolder]: For 2169129/2333151 co-relation queries the response was YES. [2022-12-11 21:35:39,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417498 conditions, 24065 events. 6223/24065 cut-off events. For 2169129/2333151 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 310860 event pairs, 321 based on Foata normal form. 1314/24071 useless extension candidates. Maximal degree in co-relation 338562. Up to 6914 conditions per place. [2022-12-11 21:35:39,407 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2530 selfloop transitions, 328 changer transitions 26/3046 dead transitions. [2022-12-11 21:35:39,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1127 places, 3046 transitions, 214000 flow [2022-12-11 21:35:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 21:35:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-11 21:35:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7567 transitions. [2022-12-11 21:35:39,411 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49697885196374625 [2022-12-11 21:35:39,411 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 827 predicate places. [2022-12-11 21:35:39,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 1127 places, 3046 transitions, 214000 flow [2022-12-11 21:35:39,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1115 places, 3020 transitions, 212056 flow [2022-12-11 21:35:39,838 INFO L495 AbstractCegarLoop]: Abstraction has has 1115 places, 3020 transitions, 212056 flow [2022-12-11 21:35:39,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:39,839 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:35:39,839 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:35:39,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-11 21:35:39,839 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:35:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:35:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1461053625, now seen corresponding path program 36 times [2022-12-11 21:35:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:35:39,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129458226] [2022-12-11 21:35:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:35:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:35:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:35:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:35:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:35:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129458226] [2022-12-11 21:35:41,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129458226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:35:41,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:35:41,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:35:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005574408] [2022-12-11 21:35:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:35:41,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:35:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:35:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:35:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:35:41,135 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:35:41,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1115 places, 3020 transitions, 212056 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:41,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:35:41,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:35:41,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:35:56,143 INFO L130 PetriNetUnfolder]: 6217/23719 cut-off events. [2022-12-11 21:35:56,143 INFO L131 PetriNetUnfolder]: For 2303539/2489201 co-relation queries the response was YES. [2022-12-11 21:35:56,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425508 conditions, 23719 events. 6217/23719 cut-off events. For 2303539/2489201 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 304757 event pairs, 242 based on Foata normal form. 1279/23705 useless extension candidates. Maximal degree in co-relation 344579. Up to 6886 conditions per place. [2022-12-11 21:35:56,472 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2515 selfloop transitions, 337 changer transitions 22/3036 dead transitions. [2022-12-11 21:35:56,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1160 places, 3036 transitions, 219013 flow [2022-12-11 21:35:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 21:35:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-11 21:35:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7571 transitions. [2022-12-11 21:35:56,476 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4972415604886379 [2022-12-11 21:35:56,477 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 860 predicate places. [2022-12-11 21:35:56,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 1160 places, 3036 transitions, 219013 flow [2022-12-11 21:35:56,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1154 places, 3014 transitions, 217328 flow [2022-12-11 21:35:56,759 INFO L495 AbstractCegarLoop]: Abstraction has has 1154 places, 3014 transitions, 217328 flow [2022-12-11 21:35:56,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:56,759 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:35:56,759 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:35:56,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-11 21:35:56,760 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:35:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:35:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash -241695611, now seen corresponding path program 37 times [2022-12-11 21:35:56,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:35:56,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462458693] [2022-12-11 21:35:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:35:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:35:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:35:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:35:57,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:35:57,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462458693] [2022-12-11 21:35:57,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462458693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:35:57,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:35:57,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:35:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707165504] [2022-12-11 21:35:57,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:35:57,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:35:57,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:35:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:35:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:35:57,987 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:35:57,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1154 places, 3014 transitions, 217328 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:35:57,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:35:57,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:35:57,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:36:13,513 INFO L130 PetriNetUnfolder]: 6184/23788 cut-off events. [2022-12-11 21:36:13,513 INFO L131 PetriNetUnfolder]: For 2366070/2522038 co-relation queries the response was YES. [2022-12-11 21:36:13,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437022 conditions, 23788 events. 6184/23788 cut-off events. For 2366070/2522038 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 305794 event pairs, 420 based on Foata normal form. 1227/23736 useless extension candidates. Maximal degree in co-relation 354713. Up to 6864 conditions per place. [2022-12-11 21:36:13,936 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2495 selfloop transitions, 330 changer transitions 26/3013 dead transitions. [2022-12-11 21:36:13,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1198 places, 3013 transitions, 222952 flow [2022-12-11 21:36:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-11 21:36:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-11 21:36:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7412 transitions. [2022-12-11 21:36:13,941 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4976166498825109 [2022-12-11 21:36:13,942 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 898 predicate places. [2022-12-11 21:36:13,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 1198 places, 3013 transitions, 222952 flow [2022-12-11 21:36:14,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1187 places, 2987 transitions, 220904 flow [2022-12-11 21:36:14,238 INFO L495 AbstractCegarLoop]: Abstraction has has 1187 places, 2987 transitions, 220904 flow [2022-12-11 21:36:14,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:36:14,238 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:36:14,238 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:36:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-11 21:36:14,239 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:36:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:36:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2019001733, now seen corresponding path program 38 times [2022-12-11 21:36:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:36:14,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987109184] [2022-12-11 21:36:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:36:14,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:36:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:36:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:36:15,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:36:15,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987109184] [2022-12-11 21:36:15,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987109184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:36:15,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:36:15,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:36:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613989427] [2022-12-11 21:36:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:36:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:36:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:36:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:36:15,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:36:15,387 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:36:15,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1187 places, 2987 transitions, 220904 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:36:15,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:36:15,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:36:15,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:36:30,103 INFO L130 PetriNetUnfolder]: 6285/24176 cut-off events. [2022-12-11 21:36:30,103 INFO L131 PetriNetUnfolder]: For 2618901/2830564 co-relation queries the response was YES. [2022-12-11 21:36:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452495 conditions, 24176 events. 6285/24176 cut-off events. For 2618901/2830564 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 312327 event pairs, 257 based on Foata normal form. 1193/24042 useless extension candidates. Maximal degree in co-relation 365694. Up to 6925 conditions per place. [2022-12-11 21:36:30,580 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2567 selfloop transitions, 310 changer transitions 25/3064 dead transitions. [2022-12-11 21:36:30,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1228 places, 3064 transitions, 232770 flow [2022-12-11 21:36:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 21:36:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 21:36:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6932 transitions. [2022-12-11 21:36:30,583 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49863329017407565 [2022-12-11 21:36:30,584 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 928 predicate places. [2022-12-11 21:36:30,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 1228 places, 3064 transitions, 232770 flow [2022-12-11 21:36:30,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1223 places, 3039 transitions, 230748 flow [2022-12-11 21:36:30,877 INFO L495 AbstractCegarLoop]: Abstraction has has 1223 places, 3039 transitions, 230748 flow [2022-12-11 21:36:30,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:36:30,878 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:36:30,878 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:36:30,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-11 21:36:30,878 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:36:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:36:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -777650419, now seen corresponding path program 39 times [2022-12-11 21:36:30,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:36:30,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419005639] [2022-12-11 21:36:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:36:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:36:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:36:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:36:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:36:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419005639] [2022-12-11 21:36:31,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419005639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:36:31,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:36:31,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:36:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702137418] [2022-12-11 21:36:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:36:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:36:31,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:36:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:36:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:36:31,545 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:36:31,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1223 places, 3039 transitions, 230748 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:36:31,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:36:31,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:36:31,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:36:45,817 INFO L130 PetriNetUnfolder]: 6447/24750 cut-off events. [2022-12-11 21:36:45,817 INFO L131 PetriNetUnfolder]: For 2827421/3032760 co-relation queries the response was YES. [2022-12-11 21:36:45,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474573 conditions, 24750 events. 6447/24750 cut-off events. For 2827421/3032760 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 320239 event pairs, 279 based on Foata normal form. 497/23896 useless extension candidates. Maximal degree in co-relation 382884. Up to 7166 conditions per place. [2022-12-11 21:36:46,150 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 2795 selfloop transitions, 134 changer transitions 25/3141 dead transitions. [2022-12-11 21:36:46,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1254 places, 3141 transitions, 244884 flow [2022-12-11 21:36:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 21:36:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 21:36:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6290 transitions. [2022-12-11 21:36:46,153 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5938444108761329 [2022-12-11 21:36:46,154 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 954 predicate places. [2022-12-11 21:36:46,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 1254 places, 3141 transitions, 244884 flow [2022-12-11 21:36:46,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1246 places, 3116 transitions, 242812 flow [2022-12-11 21:36:46,604 INFO L495 AbstractCegarLoop]: Abstraction has has 1246 places, 3116 transitions, 242812 flow [2022-12-11 21:36:46,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:36:46,604 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:36:46,605 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:36:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-11 21:36:46,605 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:36:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:36:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 913780067, now seen corresponding path program 40 times [2022-12-11 21:36:46,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:36:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712920111] [2022-12-11 21:36:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:36:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:36:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:36:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:36:47,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:36:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712920111] [2022-12-11 21:36:47,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712920111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:36:47,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:36:47,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:36:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479372896] [2022-12-11 21:36:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:36:47,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:36:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:36:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:36:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:36:47,653 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:36:47,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1246 places, 3116 transitions, 242812 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:36:47,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:36:47,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:36:47,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:37:04,624 INFO L130 PetriNetUnfolder]: 6520/25450 cut-off events. [2022-12-11 21:37:04,624 INFO L131 PetriNetUnfolder]: For 3018709/3226957 co-relation queries the response was YES. [2022-12-11 21:37:04,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495311 conditions, 25450 events. 6520/25450 cut-off events. For 3018709/3226957 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 333143 event pairs, 447 based on Foata normal form. 1094/25151 useless extension candidates. Maximal degree in co-relation 398884. Up to 7374 conditions per place. [2022-12-11 21:37:05,056 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2703 selfloop transitions, 318 changer transitions 25/3208 dead transitions. [2022-12-11 21:37:05,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1291 places, 3208 transitions, 256521 flow [2022-12-11 21:37:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 21:37:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-11 21:37:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7577 transitions. [2022-12-11 21:37:05,060 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4976356232759753 [2022-12-11 21:37:05,060 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 991 predicate places. [2022-12-11 21:37:05,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 1291 places, 3208 transitions, 256521 flow [2022-12-11 21:37:05,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1283 places, 3183 transitions, 254399 flow [2022-12-11 21:37:05,416 INFO L495 AbstractCegarLoop]: Abstraction has has 1283 places, 3183 transitions, 254399 flow [2022-12-11 21:37:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:37:05,417 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:37:05,417 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:37:05,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-11 21:37:05,417 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:37:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:37:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash -759485099, now seen corresponding path program 41 times [2022-12-11 21:37:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:37:05,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364840810] [2022-12-11 21:37:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:37:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:37:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:37:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:37:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:37:06,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364840810] [2022-12-11 21:37:06,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364840810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:37:06,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:37:06,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:37:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895388997] [2022-12-11 21:37:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:37:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:37:06,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:37:06,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:37:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:37:06,500 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:37:06,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1283 places, 3183 transitions, 254399 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:37:06,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:37:06,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:37:06,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:37:23,860 INFO L130 PetriNetUnfolder]: 6490/25292 cut-off events. [2022-12-11 21:37:23,860 INFO L131 PetriNetUnfolder]: For 3114427/3313256 co-relation queries the response was YES. [2022-12-11 21:37:23,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502377 conditions, 25292 events. 6490/25292 cut-off events. For 3114427/3313256 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 330698 event pairs, 221 based on Foata normal form. 1073/24952 useless extension candidates. Maximal degree in co-relation 404042. Up to 7320 conditions per place. [2022-12-11 21:37:24,231 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2701 selfloop transitions, 314 changer transitions 22/3199 dead transitions. [2022-12-11 21:37:24,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1324 places, 3199 transitions, 261842 flow [2022-12-11 21:37:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 21:37:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 21:37:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6921 transitions. [2022-12-11 21:37:24,234 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49784203711696157 [2022-12-11 21:37:24,238 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1024 predicate places. [2022-12-11 21:37:24,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 1324 places, 3199 transitions, 261842 flow [2022-12-11 21:37:24,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1319 places, 3177 transitions, 259937 flow [2022-12-11 21:37:24,654 INFO L495 AbstractCegarLoop]: Abstraction has has 1319 places, 3177 transitions, 259937 flow [2022-12-11 21:37:24,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:37:24,655 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:37:24,657 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:37:24,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-11 21:37:24,659 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:37:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:37:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1108435031, now seen corresponding path program 42 times [2022-12-11 21:37:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:37:24,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260082893] [2022-12-11 21:37:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:37:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:37:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:37:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:37:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:37:25,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260082893] [2022-12-11 21:37:25,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260082893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:37:25,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:37:25,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:37:25,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79140269] [2022-12-11 21:37:25,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:37:25,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:37:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:37:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:37:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:37:25,708 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:37:25,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1319 places, 3177 transitions, 259937 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:37:25,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:37:25,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:37:25,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:37:43,409 INFO L130 PetriNetUnfolder]: 6460/25225 cut-off events. [2022-12-11 21:37:43,410 INFO L131 PetriNetUnfolder]: For 3237226/3429537 co-relation queries the response was YES. [2022-12-11 21:37:43,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514223 conditions, 25225 events. 6460/25225 cut-off events. For 3237226/3429537 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 329874 event pairs, 318 based on Foata normal form. 1171/24996 useless extension candidates. Maximal degree in co-relation 414390. Up to 7321 conditions per place. [2022-12-11 21:37:43,904 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2680 selfloop transitions, 308 changer transitions 26/3176 dead transitions. [2022-12-11 21:37:43,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1361 places, 3176 transitions, 265877 flow [2022-12-11 21:37:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-11 21:37:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-11 21:37:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7078 transitions. [2022-12-11 21:37:43,908 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.497295018618703 [2022-12-11 21:37:43,908 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1061 predicate places. [2022-12-11 21:37:43,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 1361 places, 3176 transitions, 265877 flow [2022-12-11 21:37:44,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1349 places, 3150 transitions, 263569 flow [2022-12-11 21:37:44,239 INFO L495 AbstractCegarLoop]: Abstraction has has 1349 places, 3150 transitions, 263569 flow [2022-12-11 21:37:44,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:37:44,240 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:37:44,240 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:37:44,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-11 21:37:44,240 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:37:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:37:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1367992885, now seen corresponding path program 43 times [2022-12-11 21:37:44,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:37:44,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3692691] [2022-12-11 21:37:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:37:44,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:37:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:37:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:37:45,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:37:45,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3692691] [2022-12-11 21:37:45,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3692691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:37:45,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:37:45,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:37:45,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611456746] [2022-12-11 21:37:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:37:45,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:37:45,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:37:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:37:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:37:45,291 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:37:45,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1349 places, 3150 transitions, 263569 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:37:45,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:37:45,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:37:45,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:38:03,795 INFO L130 PetriNetUnfolder]: 6713/25966 cut-off events. [2022-12-11 21:38:03,796 INFO L131 PetriNetUnfolder]: For 3553896/3766084 co-relation queries the response was YES. [2022-12-11 21:38:03,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543236 conditions, 25966 events. 6713/25966 cut-off events. For 3553896/3766084 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 340901 event pairs, 253 based on Foata normal form. 1121/25650 useless extension candidates. Maximal degree in co-relation 434946. Up to 7606 conditions per place. [2022-12-11 21:38:04,179 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2841 selfloop transitions, 295 changer transitions 25/3323 dead transitions. [2022-12-11 21:38:04,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1397 places, 3323 transitions, 285221 flow [2022-12-11 21:38:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-11 21:38:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-11 21:38:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8074 transitions. [2022-12-11 21:38:04,183 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4978112090757753 [2022-12-11 21:38:04,183 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1097 predicate places. [2022-12-11 21:38:04,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 1397 places, 3323 transitions, 285221 flow [2022-12-11 21:38:04,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1389 places, 3298 transitions, 282949 flow [2022-12-11 21:38:04,538 INFO L495 AbstractCegarLoop]: Abstraction has has 1389 places, 3298 transitions, 282949 flow [2022-12-11 21:38:04,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:38:04,538 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:38:04,538 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:38:04,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-11 21:38:04,539 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:38:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:38:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash -367040495, now seen corresponding path program 44 times [2022-12-11 21:38:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:38:04,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246348097] [2022-12-11 21:38:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:38:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:38:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:38:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:38:05,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:38:05,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246348097] [2022-12-11 21:38:05,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246348097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:38:05,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:38:05,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:38:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868929026] [2022-12-11 21:38:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:38:05,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:38:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:38:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:38:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:38:05,764 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:38:05,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1389 places, 3298 transitions, 282949 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:38:05,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:38:05,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:38:05,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:38:25,407 INFO L130 PetriNetUnfolder]: 6651/26414 cut-off events. [2022-12-11 21:38:25,408 INFO L131 PetriNetUnfolder]: For 3694021/3892061 co-relation queries the response was YES. [2022-12-11 21:38:25,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556306 conditions, 26414 events. 6651/26414 cut-off events. For 3694021/3892061 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 350479 event pairs, 422 based on Foata normal form. 1409/26378 useless extension candidates. Maximal degree in co-relation 443687. Up to 7685 conditions per place. [2022-12-11 21:38:25,818 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2882 selfloop transitions, 286 changer transitions 25/3355 dead transitions. [2022-12-11 21:38:25,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1434 places, 3355 transitions, 294531 flow [2022-12-11 21:38:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 21:38:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-11 21:38:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7576 transitions. [2022-12-11 21:38:25,822 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4975699461447524 [2022-12-11 21:38:25,822 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1134 predicate places. [2022-12-11 21:38:25,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 1434 places, 3355 transitions, 294531 flow [2022-12-11 21:38:26,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1426 places, 3330 transitions, 292209 flow [2022-12-11 21:38:26,278 INFO L495 AbstractCegarLoop]: Abstraction has has 1426 places, 3330 transitions, 292209 flow [2022-12-11 21:38:26,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:38:26,279 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:38:26,279 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:38:26,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-11 21:38:26,279 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:38:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:38:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 764578821, now seen corresponding path program 45 times [2022-12-11 21:38:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:38:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018100300] [2022-12-11 21:38:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:38:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:38:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:38:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:38:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:38:27,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018100300] [2022-12-11 21:38:27,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018100300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:38:27,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:38:27,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-11 21:38:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812226997] [2022-12-11 21:38:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:38:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-11 21:38:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:38:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-11 21:38:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-11 21:38:27,371 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2022-12-11 21:38:27,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1426 places, 3330 transitions, 292209 flow. Second operand has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:38:27,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:38:27,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2022-12-11 21:38:27,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:38:49,188 INFO L130 PetriNetUnfolder]: 6767/26733 cut-off events. [2022-12-11 21:38:49,189 INFO L131 PetriNetUnfolder]: For 3905728/4118861 co-relation queries the response was YES. [2022-12-11 21:38:49,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572616 conditions, 26733 events. 6767/26733 cut-off events. For 3905728/4118861 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 353787 event pairs, 368 based on Foata normal form. 1031/26286 useless extension candidates. Maximal degree in co-relation 457428. Up to 7710 conditions per place. [2022-12-11 21:38:49,617 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2876 selfloop transitions, 287 changer transitions 25/3353 dead transitions. [2022-12-11 21:38:49,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1470 places, 3353 transitions, 300727 flow [2022-12-11 21:38:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-11 21:38:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-11 21:38:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7598 transitions. [2022-12-11 21:38:49,621 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5101040617656932 [2022-12-11 21:38:49,621 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1170 predicate places. [2022-12-11 21:38:49,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 1470 places, 3353 transitions, 300727 flow [2022-12-11 21:38:50,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1462 places, 3328 transitions, 298355 flow [2022-12-11 21:38:50,079 INFO L495 AbstractCegarLoop]: Abstraction has has 1462 places, 3328 transitions, 298355 flow [2022-12-11 21:38:50,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:38:50,080 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:38:50,080 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:38:50,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-11 21:38:50,080 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:38:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:38:50,080 INFO L85 PathProgramCache]: Analyzing trace with hash -830345553, now seen corresponding path program 46 times [2022-12-11 21:38:50,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:38:50,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225076407] [2022-12-11 21:38:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:38:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:38:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:38:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:38:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:38:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225076407] [2022-12-11 21:38:51,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225076407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:38:51,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:38:51,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-11 21:38:51,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434792202] [2022-12-11 21:38:51,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:38:51,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-11 21:38:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:38:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-11 21:38:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-11 21:38:51,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2022-12-11 21:38:51,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1462 places, 3328 transitions, 298355 flow. Second operand has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:38:51,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:38:51,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2022-12-11 21:38:51,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:39:11,966 INFO L130 PetriNetUnfolder]: 6709/26626 cut-off events. [2022-12-11 21:39:11,966 INFO L131 PetriNetUnfolder]: For 4027561/4219219 co-relation queries the response was YES. [2022-12-11 21:39:12,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581928 conditions, 26626 events. 6709/26626 cut-off events. For 4027561/4219219 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 353126 event pairs, 437 based on Foata normal form. 1094/26227 useless extension candidates. Maximal degree in co-relation 464709. Up to 7699 conditions per place. [2022-12-11 21:39:12,387 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 2871 selfloop transitions, 284 changer transitions 24/3344 dead transitions. [2022-12-11 21:39:12,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1504 places, 3344 transitions, 306242 flow [2022-12-11 21:39:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-11 21:39:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-11 21:39:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7254 transitions. [2022-12-11 21:39:12,398 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5096606477903464 [2022-12-11 21:39:12,399 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1204 predicate places. [2022-12-11 21:39:12,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 1504 places, 3344 transitions, 306242 flow [2022-12-11 21:39:12,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1498 places, 3320 transitions, 303914 flow [2022-12-11 21:39:12,896 INFO L495 AbstractCegarLoop]: Abstraction has has 1498 places, 3320 transitions, 303914 flow [2022-12-11 21:39:12,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:39:12,897 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:39:12,897 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:39:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-11 21:39:12,897 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:39:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:39:12,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1164848243, now seen corresponding path program 47 times [2022-12-11 21:39:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:39:12,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425834024] [2022-12-11 21:39:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:39:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:39:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:39:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:39:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:39:13,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425834024] [2022-12-11 21:39:13,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425834024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:39:13,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:39:13,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:39:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207411018] [2022-12-11 21:39:13,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:39:13,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:39:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:39:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:39:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:39:13,613 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:39:13,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1498 places, 3320 transitions, 303914 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:39:13,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:39:13,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:39:13,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:39:35,482 INFO L130 PetriNetUnfolder]: 7320/28769 cut-off events. [2022-12-11 21:39:35,482 INFO L131 PetriNetUnfolder]: For 4674886/4957714 co-relation queries the response was YES. [2022-12-11 21:39:35,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646488 conditions, 28769 events. 7320/28769 cut-off events. For 4674886/4957714 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 385850 event pairs, 253 based on Foata normal form. 520/27690 useless extension candidates. Maximal degree in co-relation 519310. Up to 8442 conditions per place. [2022-12-11 21:39:36,101 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 3240 selfloop transitions, 143 changer transitions 23/3593 dead transitions. [2022-12-11 21:39:36,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1530 places, 3593 transitions, 337093 flow [2022-12-11 21:39:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 21:39:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 21:39:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6460 transitions. [2022-12-11 21:39:36,104 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5914126155817999 [2022-12-11 21:39:36,104 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1230 predicate places. [2022-12-11 21:39:36,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 1530 places, 3593 transitions, 337093 flow [2022-12-11 21:39:36,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1522 places, 3570 transitions, 334828 flow [2022-12-11 21:39:36,538 INFO L495 AbstractCegarLoop]: Abstraction has has 1522 places, 3570 transitions, 334828 flow [2022-12-11 21:39:36,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:39:36,538 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:39:36,539 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:39:36,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-11 21:39:36,539 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:39:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:39:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1373223327, now seen corresponding path program 48 times [2022-12-11 21:39:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:39:36,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379624992] [2022-12-11 21:39:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:39:36,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:39:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:39:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:39:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:39:37,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379624992] [2022-12-11 21:39:37,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379624992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:39:37,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:39:37,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:39:37,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221417742] [2022-12-11 21:39:37,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:39:37,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:39:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:39:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:39:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:39:37,228 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:39:37,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1522 places, 3570 transitions, 334828 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:39:37,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:39:37,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:39:37,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:40:01,556 INFO L130 PetriNetUnfolder]: 7405/29517 cut-off events. [2022-12-11 21:40:01,556 INFO L131 PetriNetUnfolder]: For 4813751/5042478 co-relation queries the response was YES. [2022-12-11 21:40:01,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669064 conditions, 29517 events. 7405/29517 cut-off events. For 4813751/5042478 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 398302 event pairs, 544 based on Foata normal form. 567/28486 useless extension candidates. Maximal degree in co-relation 535426. Up to 8609 conditions per place. [2022-12-11 21:40:02,193 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 3316 selfloop transitions, 144 changer transitions 25/3672 dead transitions. [2022-12-11 21:40:02,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1554 places, 3672 transitions, 351862 flow [2022-12-11 21:40:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 21:40:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 21:40:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6460 transitions. [2022-12-11 21:40:02,196 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5914126155817999 [2022-12-11 21:40:02,197 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1254 predicate places. [2022-12-11 21:40:02,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 1554 places, 3672 transitions, 351862 flow [2022-12-11 21:40:02,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1546 places, 3647 transitions, 349340 flow [2022-12-11 21:40:02,647 INFO L495 AbstractCegarLoop]: Abstraction has has 1546 places, 3647 transitions, 349340 flow [2022-12-11 21:40:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:40:02,648 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:40:02,648 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:40:02,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-11 21:40:02,648 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:40:02,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:40:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash 830118223, now seen corresponding path program 49 times [2022-12-11 21:40:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:40:02,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21492934] [2022-12-11 21:40:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:40:02,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:40:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:40:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:40:03,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:40:03,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21492934] [2022-12-11 21:40:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21492934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:40:03,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:40:03,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:40:03,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555983850] [2022-12-11 21:40:03,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:40:03,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:40:03,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:40:03,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:40:03,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:40:03,798 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:40:03,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1546 places, 3647 transitions, 349340 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:40:03,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:40:03,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:40:03,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:40:29,858 INFO L130 PetriNetUnfolder]: 7402/29592 cut-off events. [2022-12-11 21:40:29,858 INFO L131 PetriNetUnfolder]: For 4900321/5110866 co-relation queries the response was YES. [2022-12-11 21:40:29,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680967 conditions, 29592 events. 7402/29592 cut-off events. For 4900321/5110866 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 399269 event pairs, 542 based on Foata normal form. 1081/29017 useless extension candidates. Maximal degree in co-relation 545668. Up to 8587 conditions per place. [2022-12-11 21:40:30,506 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 3180 selfloop transitions, 280 changer transitions 24/3646 dead transitions. [2022-12-11 21:40:30,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1587 places, 3646 transitions, 356206 flow [2022-12-11 21:40:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 21:40:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 21:40:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6920 transitions. [2022-12-11 21:40:30,509 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49777010502086033 [2022-12-11 21:40:30,510 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1287 predicate places. [2022-12-11 21:40:30,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 1587 places, 3646 transitions, 356206 flow [2022-12-11 21:40:30,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1576 places, 3622 transitions, 353749 flow [2022-12-11 21:40:30,954 INFO L495 AbstractCegarLoop]: Abstraction has has 1576 places, 3622 transitions, 353749 flow [2022-12-11 21:40:30,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:40:30,954 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:40:30,954 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:40:30,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-11 21:40:30,955 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:40:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:40:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash 598243721, now seen corresponding path program 50 times [2022-12-11 21:40:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:40:30,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129445772] [2022-12-11 21:40:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:40:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:40:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:40:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:40:32,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:40:32,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129445772] [2022-12-11 21:40:32,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129445772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:40:32,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:40:32,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:40:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491947387] [2022-12-11 21:40:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:40:32,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:40:32,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:40:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:40:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:40:32,161 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:40:32,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1576 places, 3622 transitions, 353749 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:40:32,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:40:32,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:40:32,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:40:59,188 INFO L130 PetriNetUnfolder]: 7555/29775 cut-off events. [2022-12-11 21:40:59,188 INFO L131 PetriNetUnfolder]: For 5192679/5440713 co-relation queries the response was YES. [2022-12-11 21:40:59,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705926 conditions, 29775 events. 7555/29775 cut-off events. For 5192679/5440713 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 401156 event pairs, 368 based on Foata normal form. 542/28644 useless extension candidates. Maximal degree in co-relation 564223. Up to 10970 conditions per place. [2022-12-11 21:40:59,779 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 3293 selfloop transitions, 240 changer transitions 25/3720 dead transitions. [2022-12-11 21:40:59,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1614 places, 3720 transitions, 370928 flow [2022-12-11 21:40:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-11 21:40:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-11 21:40:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6413 transitions. [2022-12-11 21:40:59,783 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4967851886280889 [2022-12-11 21:40:59,783 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1314 predicate places. [2022-12-11 21:40:59,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 1614 places, 3720 transitions, 370928 flow [2022-12-11 21:41:00,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1609 places, 3695 transitions, 368306 flow [2022-12-11 21:41:00,267 INFO L495 AbstractCegarLoop]: Abstraction has has 1609 places, 3695 transitions, 368306 flow [2022-12-11 21:41:00,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:41:00,268 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:41:00,268 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:41:00,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-11 21:41:00,268 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:41:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:41:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2095402861, now seen corresponding path program 51 times [2022-12-11 21:41:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:41:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172112095] [2022-12-11 21:41:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:41:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:41:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:41:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:41:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:41:01,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172112095] [2022-12-11 21:41:01,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172112095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:41:01,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:41:01,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:41:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841560587] [2022-12-11 21:41:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:41:01,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:41:01,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:41:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:41:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:41:01,409 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:41:01,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1609 places, 3695 transitions, 368306 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:41:01,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:41:01,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:41:01,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:41:32,337 INFO L130 PetriNetUnfolder]: 7674/30251 cut-off events. [2022-12-11 21:41:32,338 INFO L131 PetriNetUnfolder]: For 5719698/6042457 co-relation queries the response was YES. [2022-12-11 21:41:32,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735415 conditions, 30251 events. 7674/30251 cut-off events. For 5719698/6042457 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 409455 event pairs, 381 based on Foata normal form. 783/29383 useless extension candidates. Maximal degree in co-relation 584426. Up to 11315 conditions per place. [2022-12-11 21:41:32,866 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 3397 selfloop transitions, 274 changer transitions 25/3858 dead transitions. [2022-12-11 21:41:32,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1654 places, 3858 transitions, 392761 flow [2022-12-11 21:41:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-11 21:41:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-11 21:41:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7560 transitions. [2022-12-11 21:41:32,870 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49651911204518584 [2022-12-11 21:41:32,871 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1354 predicate places. [2022-12-11 21:41:32,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 1654 places, 3858 transitions, 392761 flow [2022-12-11 21:41:33,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1646 places, 3833 transitions, 390089 flow [2022-12-11 21:41:33,442 INFO L495 AbstractCegarLoop]: Abstraction has has 1646 places, 3833 transitions, 390089 flow [2022-12-11 21:41:33,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:41:33,443 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:41:33,443 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:41:33,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-11 21:41:33,443 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:41:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:41:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1262734865, now seen corresponding path program 52 times [2022-12-11 21:41:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:41:33,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092274326] [2022-12-11 21:41:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:41:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:41:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:41:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:41:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:41:34,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092274326] [2022-12-11 21:41:34,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092274326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:41:34,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:41:34,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:41:34,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851342833] [2022-12-11 21:41:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:41:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:41:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:41:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:41:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:41:34,637 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:41:34,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1646 places, 3833 transitions, 390089 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:41:34,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:41:34,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:41:34,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:42:05,314 INFO L130 PetriNetUnfolder]: 7752/30875 cut-off events. [2022-12-11 21:42:05,314 INFO L131 PetriNetUnfolder]: For 6045730/6369505 co-relation queries the response was YES. [2022-12-11 21:42:05,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755267 conditions, 30875 events. 7752/30875 cut-off events. For 6045730/6369505 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 419855 event pairs, 429 based on Foata normal form. 663/29813 useless extension candidates. Maximal degree in co-relation 598617. Up to 11424 conditions per place. [2022-12-11 21:42:05,956 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 3424 selfloop transitions, 279 changer transitions 25/3890 dead transitions. [2022-12-11 21:42:05,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1688 places, 3890 transitions, 403653 flow [2022-12-11 21:42:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-11 21:42:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-11 21:42:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7058 transitions. [2022-12-11 21:42:05,959 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4958898334855617 [2022-12-11 21:42:05,960 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1388 predicate places. [2022-12-11 21:42:05,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 1688 places, 3890 transitions, 403653 flow [2022-12-11 21:42:06,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1680 places, 3865 transitions, 400931 flow [2022-12-11 21:42:06,455 INFO L495 AbstractCegarLoop]: Abstraction has has 1680 places, 3865 transitions, 400931 flow [2022-12-11 21:42:06,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:42:06,456 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:42:06,456 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:42:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-11 21:42:06,456 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:42:06,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:42:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash -59681419, now seen corresponding path program 53 times [2022-12-11 21:42:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:42:06,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503409696] [2022-12-11 21:42:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:42:06,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:42:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:42:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:42:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:42:07,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503409696] [2022-12-11 21:42:07,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503409696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:42:07,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:42:07,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:42:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634552622] [2022-12-11 21:42:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:42:07,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:42:07,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:42:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:42:07,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:42:07,655 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:42:07,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1680 places, 3865 transitions, 400931 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:42:07,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:42:07,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:42:07,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:42:40,509 INFO L130 PetriNetUnfolder]: 7785/31258 cut-off events. [2022-12-11 21:42:40,509 INFO L131 PetriNetUnfolder]: For 6167689/6419614 co-relation queries the response was YES. [2022-12-11 21:42:40,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772905 conditions, 31258 events. 7785/31258 cut-off events. For 6167689/6419614 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 426525 event pairs, 537 based on Foata normal form. 810/30279 useless extension candidates. Maximal degree in co-relation 613499. Up to 11490 conditions per place. [2022-12-11 21:42:41,143 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 3419 selfloop transitions, 282 changer transitions 25/3888 dead transitions. [2022-12-11 21:42:41,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1721 places, 3888 transitions, 410893 flow [2022-12-11 21:42:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 21:42:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 21:42:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6896 transitions. [2022-12-11 21:42:41,146 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4960437347144296 [2022-12-11 21:42:41,147 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1421 predicate places. [2022-12-11 21:42:41,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 1721 places, 3888 transitions, 410893 flow [2022-12-11 21:42:41,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1713 places, 3863 transitions, 408121 flow [2022-12-11 21:42:41,635 INFO L495 AbstractCegarLoop]: Abstraction has has 1713 places, 3863 transitions, 408121 flow [2022-12-11 21:42:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:42:41,635 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:42:41,636 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:42:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-11 21:42:41,636 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:42:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:42:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash -757247743, now seen corresponding path program 54 times [2022-12-11 21:42:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:42:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015102918] [2022-12-11 21:42:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:42:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:42:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:42:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:42:42,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:42:42,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015102918] [2022-12-11 21:42:42,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015102918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:42:42,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:42:42,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:42:42,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714548574] [2022-12-11 21:42:42,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:42:42,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:42:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:42:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:42:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:42:42,823 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:42:42,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1713 places, 3863 transitions, 408121 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:42:42,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:42:42,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:42:42,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:43:12,995 INFO L130 PetriNetUnfolder]: 7706/30895 cut-off events. [2022-12-11 21:43:12,995 INFO L131 PetriNetUnfolder]: For 6393483/6724094 co-relation queries the response was YES. [2022-12-11 21:43:13,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781491 conditions, 30895 events. 7706/30895 cut-off events. For 6393483/6724094 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 421494 event pairs, 408 based on Foata normal form. 812/29995 useless extension candidates. Maximal degree in co-relation 620007. Up to 11400 conditions per place. [2022-12-11 21:43:13,638 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 3414 selfloop transitions, 279 changer transitions 24/3879 dead transitions. [2022-12-11 21:43:13,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1752 places, 3879 transitions, 417340 flow [2022-12-11 21:43:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-11 21:43:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-12-11 21:43:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6560 transitions. [2022-12-11 21:43:13,641 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4954682779456193 [2022-12-11 21:43:13,642 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1452 predicate places. [2022-12-11 21:43:13,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 1752 places, 3879 transitions, 417340 flow [2022-12-11 21:43:14,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1746 places, 3855 transitions, 414628 flow [2022-12-11 21:43:14,137 INFO L495 AbstractCegarLoop]: Abstraction has has 1746 places, 3855 transitions, 414628 flow [2022-12-11 21:43:14,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:43:14,137 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:43:14,138 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:43:14,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-12-11 21:43:14,138 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:43:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:43:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash 874850201, now seen corresponding path program 55 times [2022-12-11 21:43:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:43:14,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312011393] [2022-12-11 21:43:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:43:14,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:43:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:43:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:43:14,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:43:14,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312011393] [2022-12-11 21:43:14,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312011393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:43:14,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:43:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:43:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164089096] [2022-12-11 21:43:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:43:14,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:43:14,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:43:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:43:14,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:43:14,923 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:43:14,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1746 places, 3855 transitions, 414628 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:43:14,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:43:14,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:43:14,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:43:45,119 INFO L130 PetriNetUnfolder]: 7655/30750 cut-off events. [2022-12-11 21:43:45,119 INFO L131 PetriNetUnfolder]: For 6549583/6861147 co-relation queries the response was YES. [2022-12-11 21:43:45,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791651 conditions, 30750 events. 7655/30750 cut-off events. For 6549583/6861147 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 419545 event pairs, 477 based on Foata normal form. 568/29598 useless extension candidates. Maximal degree in co-relation 627170. Up to 11352 conditions per place. [2022-12-11 21:43:45,700 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 3542 selfloop transitions, 138 changer transitions 24/3891 dead transitions. [2022-12-11 21:43:45,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1774 places, 3891 transitions, 426083 flow [2022-12-11 21:43:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 21:43:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 21:43:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5713 transitions. [2022-12-11 21:43:45,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.595166163141994 [2022-12-11 21:43:45,704 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1474 predicate places. [2022-12-11 21:43:45,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 1774 places, 3891 transitions, 426083 flow [2022-12-11 21:43:46,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1768 places, 3867 transitions, 423323 flow [2022-12-11 21:43:46,205 INFO L495 AbstractCegarLoop]: Abstraction has has 1768 places, 3867 transitions, 423323 flow [2022-12-11 21:43:46,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:43:46,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:43:46,206 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:43:46,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-12-11 21:43:46,206 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:43:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:43:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 763031765, now seen corresponding path program 56 times [2022-12-11 21:43:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:43:46,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560080829] [2022-12-11 21:43:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:43:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:43:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:43:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:43:46,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:43:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560080829] [2022-12-11 21:43:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560080829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:43:46,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:43:46,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 21:43:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756157010] [2022-12-11 21:43:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:43:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 21:43:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:43:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 21:43:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-11 21:43:46,819 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-11 21:43:46,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1768 places, 3867 transitions, 423323 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:43:46,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:43:46,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-11 21:43:46,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:44:17,825 INFO L130 PetriNetUnfolder]: 7770/31008 cut-off events. [2022-12-11 21:44:17,825 INFO L131 PetriNetUnfolder]: For 6957455/7286741 co-relation queries the response was YES. [2022-12-11 21:44:17,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815212 conditions, 31008 events. 7770/31008 cut-off events. For 6957455/7286741 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 422285 event pairs, 542 based on Foata normal form. 461/29758 useless extension candidates. Maximal degree in co-relation 647992. Up to 11515 conditions per place. [2022-12-11 21:44:18,490 INFO L137 encePairwiseOnDemand]: 309/331 looper letters, 3545 selfloop transitions, 145 changer transitions 22/3899 dead transitions. [2022-12-11 21:44:18,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1796 places, 3899 transitions, 434388 flow [2022-12-11 21:44:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-11 21:44:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-11 21:44:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5694 transitions. [2022-12-11 21:44:18,493 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5931867902906552 [2022-12-11 21:44:18,493 INFO L295 CegarLoopForPetriNet]: 300 programPoint places, 1496 predicate places. [2022-12-11 21:44:18,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 1796 places, 3899 transitions, 434388 flow [2022-12-11 21:44:19,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1791 places, 3877 transitions, 431823 flow [2022-12-11 21:44:19,002 INFO L495 AbstractCegarLoop]: Abstraction has has 1791 places, 3877 transitions, 431823 flow [2022-12-11 21:44:19,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:44:19,002 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:44:19,003 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:44:19,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-12-11 21:44:19,003 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 21:44:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:44:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash -304032143, now seen corresponding path program 57 times [2022-12-11 21:44:19,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:44:19,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458500658] [2022-12-11 21:44:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:44:19,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:44:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:44:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 21:44:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:44:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458500658] [2022-12-11 21:44:20,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458500658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:44:20,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:44:20,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-11 21:44:20,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296468130] [2022-12-11 21:44:20,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:44:20,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-11 21:44:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:44:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-11 21:44:20,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-11 21:44:20,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-11 21:44:20,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1791 places, 3877 transitions, 431823 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:44:20,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:44:20,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-11 21:44:20,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-11 21:44:43,603 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 21:44:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-11 21:44:43,827 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 21:44:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-12-11 21:44:43,828 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 63,while PetriNetUnfolder was constructing finite prefix that currently has 611981 conditions, 22610 events (5921/22609 cut-off events. For 5064026/5313341 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 314182 event pairs, 307 based on Foata normal form. 807/22545 useless extension candidates. Maximal degree in co-relation 525384. Up to 8037 conditions per place.). [2022-12-11 21:44:43,829 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 21:44:43,829 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 21:44:43,829 INFO L445 BasicCegarLoop]: Path program histogram: [57, 1, 1, 1, 1, 1, 1] [2022-12-11 21:44:43,831 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 21:44:43,831 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 21:44:43,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 09:44:43 BasicIcfg [2022-12-11 21:44:43,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 21:44:43,837 INFO L158 Benchmark]: Toolchain (without parser) took 808158.58ms. Allocated memory was 197.1MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 172.6MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-12-11 21:44:43,837 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 21:44:43,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.54ms. Allocated memory is still 197.1MB. Free memory was 172.6MB in the beginning and 159.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 21:44:43,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.87ms. Allocated memory is still 197.1MB. Free memory was 159.9MB in the beginning and 157.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 21:44:43,838 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 197.1MB. Free memory was 157.3MB in the beginning and 155.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 21:44:43,838 INFO L158 Benchmark]: RCFGBuilder took 598.77ms. Allocated memory is still 197.1MB. Free memory was 155.2MB in the beginning and 130.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-12-11 21:44:43,838 INFO L158 Benchmark]: TraceAbstraction took 807314.99ms. Allocated memory was 197.1MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 128.5MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-12-11 21:44:43,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.54ms. Allocated memory is still 197.1MB. Free memory was 172.6MB in the beginning and 159.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.87ms. Allocated memory is still 197.1MB. Free memory was 159.9MB in the beginning and 157.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 197.1MB. Free memory was 157.3MB in the beginning and 155.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 598.77ms. Allocated memory is still 197.1MB. Free memory was 155.2MB in the beginning and 130.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 807314.99ms. Allocated memory was 197.1MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 128.5MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 63,while PetriNetUnfolder was constructing finite prefix that currently has 611981 conditions, 22610 events (5921/22609 cut-off events. For 5064026/5313341 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 314182 event pairs, 307 based on Foata normal form. 807/22545 useless extension candidates. Maximal degree in co-relation 525384. Up to 8037 conditions per place.). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 63,while PetriNetUnfolder was constructing finite prefix that currently has 611981 conditions, 22610 events (5921/22609 cut-off events. For 5064026/5313341 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 314182 event pairs, 307 based on Foata normal form. 807/22545 useless extension candidates. Maximal degree in co-relation 525384. Up to 8037 conditions per place.). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 63,while PetriNetUnfolder was constructing finite prefix that currently has 611981 conditions, 22610 events (5921/22609 cut-off events. For 5064026/5313341 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 314182 event pairs, 307 based on Foata normal form. 807/22545 useless extension candidates. Maximal degree in co-relation 525384. Up to 8037 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 396 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 14.3s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 807.2s, OverallIterations: 63, TraceHistogramMax: 1, PathProgramHistogramMax: 57, EmptinessCheckTime: 0.0s, AutomataDifference: 736.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30612 SdHoareTripleChecker+Valid, 44.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30612 mSDsluCounter, 116727 SdHoareTripleChecker+Invalid, 36.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107750 mSDsCounter, 410 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107983 IncrementalHoareTripleChecker+Invalid, 108393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 410 mSolverCounterUnsat, 8977 mSDtfsCounter, 107983 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4139 GetRequests, 1264 SyntacticMatches, 6 SemanticMatches, 2869 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25371 ImplicationChecksByTransitivity, 66.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431823occurred in iteration=62, InterpolantAutomatonStates: 2004, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.3s AutomataMinimizationTime, 62 MinimizatonAttempts, 84356 StatesRemovedByMinimization, 62 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 52.8s InterpolantComputationTime, 15648 NumberOfCodeBlocks, 15648 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 16042 ConstructedInterpolants, 0 QuantifiedInterpolants, 139282 SizeOfPredicates, 14 NumberOfNonLiveVariables, 984 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 67 InterpolantComputations, 63 PerfectInterpolantSequences, 238/242 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown